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Gene Information

Gene symbol: POMC

Gene name: proopiomelanocortin

HGNC ID: 9201

Synonyms: MSH, POC, CLIP, ACTH, NPP, LPH

Related Genes

# Gene Symbol Number of hits
1 ADCY10 1 hits
2 ADCY7 1 hits
3 ADCYAP1 1 hits
4 ADIPOQ 1 hits
5 AGRP 1 hits
6 AGT 1 hits
7 AGTR1 1 hits
8 ARC 1 hits
9 ASIP 1 hits
10 AVP 1 hits
11 B3GAT1 1 hits
12 BBS2 1 hits
13 BDNF 1 hits
14 BRD2 1 hits
15 BTG2 1 hits
16 C1QL1 1 hits
17 CALCB 1 hits
18 CALCR 1 hits
19 CARTPT 1 hits
20 CASR 1 hits
21 CBX4 1 hits
22 CCK 1 hits
23 CD14 1 hits
24 CDKN1A 1 hits
25 CDKN1C 1 hits
26 CENPO 1 hits
27 CGB 1 hits
28 CHGA 1 hits
29 CITED2 1 hits
30 CNTF 1 hits
31 CPE 1 hits
32 CPP 1 hits
33 CREB1 1 hits
34 CRH 1 hits
35 CRHBP 1 hits
36 CRHR1 1 hits
37 CRHR2 1 hits
38 CSH1 1 hits
39 CYP11A1 1 hits
40 CYP11B2 1 hits
41 CYP17A1 1 hits
42 CYP19A1 1 hits
43 CYP21A2 1 hits
44 CYP2B6 1 hits
45 CYTL1 1 hits
46 DBH 1 hits
47 DLL1 1 hits
48 DNMT3A 1 hits
49 EDN1 1 hits
50 EDN3 1 hits
51 EFR3B 1 hits
52 EIF2AK2 1 hits
53 EIF2AK3 1 hits
54 EIF2S1 1 hits
55 ELK3 1 hits
56 ENO2 1 hits
57 ENPP1 1 hits
58 EPHA1 1 hits
59 ESR1 1 hits
60 FABP2 1 hits
61 FABP4 1 hits
62 FABP5 1 hits
63 FGF2 1 hits
64 FOS 1 hits
65 FOSB 1 hits
66 FOXO1 1 hits
67 FSHB 1 hits
68 FTO 1 hits
69 G6PD 1 hits
70 GAL 1 hits
71 GALP 1 hits
72 GAPDH 1 hits
73 GAST 1 hits
74 GCG 1 hits
75 GCGR 1 hits
76 GCK 1 hits
77 GCKR 1 hits
78 GFAP 1 hits
79 GHRH 1 hits
80 GHRHR 1 hits
81 GHRL 1 hits
82 GIPR 1 hits
83 GNRH1 1 hits
84 GOLGA6 1 hits
85 GPBAR1 1 hits
86 GRLF1 1 hits
87 GRP 1 hits
88 HBB 1 hits
89 HCRT 1 hits
90 HNF4A 1 hits
91 HPT 1 hits
92 HSD11B1 1 hits
93 HSPA1A 1 hits
94 HTR1B 1 hits
95 HTR2A 1 hits
96 HTR2B 1 hits
97 HTR2C 1 hits
98 HTR7 1 hits
99 IDDM2 1 hits
100 IGF1 1 hits
101 IGFBP1 1 hits
102 IL1B 1 hits
103 IL6 1 hits
104 INS 1 hits
105 INSR 1 hits
106 IRS1 1 hits
107 IRS2 1 hits
108 JAK2 1 hits
109 JUN 1 hits
110 KCNJ11 1 hits
111 LEP 1 hits
112 LEPR 1 hits
113 LIFR 1 hits
114 MAPK1 1 hits
115 MBTPS1 1 hits
116 MC1R 1 hits
117 MC2R 1 hits
118 MC3R 1 hits
119 MC4R 1 hits
120 MC5R 1 hits
121 MEN1 1 hits
122 MIB1 1 hits
123 MKI67 1 hits
124 NCOA1 1 hits
125 NEUROD1 1 hits
126 NLRP3 1 hits
127 NPPA 1 hits
128 NPY 1 hits
129 NR0B1 1 hits
130 NR3C1 1 hits
131 NR3C2 1 hits
132 NTS 1 hits
133 NUCB2 1 hits
134 OPN1MW 1 hits
135 OPRD1 1 hits
136 OPRK1 1 hits
137 PCK2 1 hits
138 PCSK1 1 hits
139 PDYN 1 hits
140 PENK 1 hits
141 PEPB 1 hits
142 PHP 1 hits
143 PLCB1 1 hits
144 PLCG1 1 hits
145 PMCH 1 hits
146 POU1F1 1 hits
147 PPARG 1 hits
148 PPY 1 hits
149 PPY2 1 hits
150 PRCP 1 hits
151 PRKAA1 1 hits
152 PRKCA 1 hits
153 PRL 1 hits
154 PROP1 1 hits
155 PSENEN 1 hits
156 PSMD9 1 hits
157 PTEN 1 hits
158 PTH 1 hits
159 PTHLH 1 hits
160 PTHR1 1 hits
161 PTTG1 1 hits
162 PYY 1 hits
163 QRFP 1 hits
164 REN 1 hits
165 RETN 1 hits
166 RSS 1 hits
167 S100A1 1 hits
168 SCG5 1 hits
169 SCTR 1 hits
170 SERPINA6 1 hits
171 SHBG 1 hits
172 SLC17A6 1 hits
173 SLC20A1 1 hits
174 SLC2A1 1 hits
175 SLC2A4 1 hits
176 SNF1LK 1 hits
177 SOCS3 1 hits
178 SPAG8 1 hits
179 SST 1 hits
180 STAMBP 1 hits
181 STAT1 1 hits
182 STAT3 1 hits
183 STH 1 hits
184 SUCLG1 1 hits
185 SULT2A1 1 hits
186 SYP 1 hits
187 TAC1 1 hits
188 TBX19 1 hits
189 TBXAS1 1 hits
190 TG 1 hits
191 TH 1 hits
192 TMPRSS11D 1 hits
193 TNF 1 hits
194 TNS1 1 hits
195 TP53 1 hits
196 TRH 1 hits
197 TSC22D3 1 hits
198 TSHB 1 hits
199 UCN 1 hits
200 UCN2 1 hits
201 UCN3 1 hits
202 UCP1 1 hits
203 UCP2 1 hits
204 VEGFA 1 hits
205 VIP 1 hits
206 VSX1 1 hits
207 WARS 1 hits

Related Sentences

# PMID Sentence
1 84999 DAMME and other substances with opiate-like activity, such as morphine and beta-endorphin, affect carbohydrate metabolism and insulin secretion.
2 140046 The binding of labeled insulin was inhibited by low concentrations of unlabeled insulin and by high concentrations of proinsulin, whereas it was unaffected by the presence of glucagon, gastrin, prolactin, ACTH, or growth hormone in microgram amounts.
3 168109 Although acute insulin deficiency in intact rats produced the previously described increase in protein synthetic activity of free hepatic ribosomes and decrease in activity of hepatic bound ribosomes, these changes did not occur in Hx rats, even when Hx rats received replacement doses of thyroxine, ACTH, and growth hormone.
4 169200 Intestinal absorption of L-histidine as affected by insulin, diabetes, hydrocortisone, adrenocorticotrophic hormone (ACTH) and thyroxine has been studied.
5 171948 Plasma ACTH levels were not elevated during clinical adrenal insufficiency or after metyrapone administration but did respond normally to vasopressin and insulin-induced hypoglycemia.
6 172321 Endocrine studies of hypothalamic-pituitary function revealed completely impaired secretion of gonadotropin, growth hormone and anti-diuretic hormone, and possible partial impairment of adrenocorticotropic hormone secretion, while thyroid stimulating hormone secretion remained intact.
7 172321 Persistently elevated plasma levels of human prolactin were also demonstrated, which were unaffected by administration of either thyrotropin releasing hormone, l-DOPA or water loading, but suppressed significantly by CB-154, an ergot alkaloid.
8 204828 In three patients with diabetes and hyporeninemic hypoaldosteronism changes in renin activity, plasma aldosterone and cortisol were examined under various conditions: orthostasis and intravenous furosemide, infusion of synthetic beta1-24 ACTH on two consecutive days and diurnal variations in basal hormone fluctuations.
9 205644 We report five females with septo-optic dysplasia, blindness, and multiple pituitary tropic hormone deficiencies: all were growth hormone and adrenocorticotropic hormone deficient; two had diabetes insipidus; one had sexual precocity, and one had early pubertal maturation, whereas three were prepubertal and responded to administration of synthetic gonadotropin-releasing hormone.
10 225167 A 43 year old man with diabetes insipidus who showed panhypopituitarism and marked hypergammaglobulinemia due to histiocytosis X is reported.
11 225167 His low basal plasma adrenocorticotropin (ACTH) and growth hormone (GH) failed to respond to insulin-induced hypoglycemia.
12 225167 These results, combined with diabetes insipidus, suggested that the panhypopituitarism in these patients was hypothalamic in origin.
13 425859 After neurosurgical treatment GHD was present in all, hypothyroidism in five, ACTH-deficiency in three, hyperprolactinaemia in three, and diabetes insipidus in four children.
14 425859 From the data presented here one may suggest that TRH stimulation tests, evaluation of serum prolactin, and lysin-vasopressin stimulation tests are the most useful investigations to distinguish between hypothalamic and primary pituitary disorders.
15 461384 The diaphragm of hypophysectomized rats had an increased capacity to the C14-glucose uptake from the medium and of incorporating it into glycogen, apparently on account of exclusion of the hormones group depending on the hypophysis, with the contrainsular action (STH, ACTH, TTH).
16 950364 Dissociation of renin and aldosterone during dehydration: studies in a case of diabetes insipidus and adipsia.
17 950364 The abnormal aldosterone-renin ratio was probably not caused by an intrinsic adrenal abnormality, since high levels of aldosterone were measured as long as a certain degree of hydration had been achieved with or without exogenous ADH, and since plasma cortisol was normal and responsive to exogenous ACTH.
18 989992 Endocrine function tests were performed as follows: growth hormone (GH) was measured after insulin-induced-hypoglycaemia, luteinizing hormone (LH) and follicle-stimulating hormone (FSH) after LH-releasing hormone, thyrotrophin (TSH) and prolactin after thyrotrophin-releasing hormone; pituitary reserve of adrenocorticotrophin (ACTH) was determined by measurement of plasma cortisol after lysine-vasopressin and 11 deoxycortisol after metyrapone.
19 989992 Finally three cases of amenorrhoeagalactorrhoea, with normal prolactin level, and/or diabetes insipidus remained unexplained.
20 1285360 The changes in plasma gastrin-releasing peptide (GRP), arginine vasopressin (AVP), neuropeptide Y (NPY), corticotropin releasing hormone (CRH), galanin, ACTH, cortisol, delta sleep-inducing peptide (DSIP), adrenaline, noradrenaline and pancreatic polypeptide (PP) were measured after 5 and 15 minutes of acute insulin-induced moderate hypoglycaemia (2.0 mmol/l) in 10 patients with Type 1 diabetes mellitus with no autonomic neuropathy and in 10 healthy subjects.
21 1285360 No group differences or changes in mean plasma concentrations were found for galanin, DSIP and CRH.
22 1313174 Immunohistochemical analysis of the tumor specimen demonstrated the presence of some neoplastic cells immunoreactive for chromogranin A, neuron-specific enolase and ACTH.
23 1314697 In the present study, binding of DAB389-MSH to melanotropin receptors in biopsy specimens of human and mouse melanoma metastases was assessed by measuring its ability to inhibit binding of a radiolabeled, superpotent analogue of alpha-MSH (125I-[Nle4,D-Phe7]-alpha-MSH; 125I-NDP-MSH) and comparing its potency in this system with those of the established ligands NDP-MSH and alpha-MSH.
24 1314697 Taken together, these results suggest that NDP-MSH, alpha-MSH, and DAB389-MSH bind to a common melanotropin receptor in human metastatic melanoma cells.
25 1314697 In the present study, binding of DAB389-MSH to melanotropin receptors in biopsy specimens of human and mouse melanoma metastases was assessed by measuring its ability to inhibit binding of a radiolabeled, superpotent analogue of alpha-MSH (125I-[Nle4,D-Phe7]-alpha-MSH; 125I-NDP-MSH) and comparing its potency in this system with those of the established ligands NDP-MSH and alpha-MSH.
26 1314697 Taken together, these results suggest that NDP-MSH, alpha-MSH, and DAB389-MSH bind to a common melanotropin receptor in human metastatic melanoma cells.
27 1319562 Coexisting corticotroph and lactotroph adenomas: case report with reference to the relationship of corticotropin and prolactin excess.
28 1319562 Postoperatively, the serum prolactin and corticotropin levels decreased significantly.
29 1319562 The mechanisms underlying simultaneous adrenocorticotropic hormone and prolactin excess are discussed.
30 1319562 Coexisting corticotroph and lactotroph adenomas: case report with reference to the relationship of corticotropin and prolactin excess.
31 1319562 Postoperatively, the serum prolactin and corticotropin levels decreased significantly.
32 1319562 The mechanisms underlying simultaneous adrenocorticotropic hormone and prolactin excess are discussed.
33 1319562 Coexisting corticotroph and lactotroph adenomas: case report with reference to the relationship of corticotropin and prolactin excess.
34 1319562 Postoperatively, the serum prolactin and corticotropin levels decreased significantly.
35 1319562 The mechanisms underlying simultaneous adrenocorticotropic hormone and prolactin excess are discussed.
36 1332223 While the adrenocorticotropic hormone (ACTH) concentrations of 10-53 pg/ml remained constant during the study period, thyroid-stimulating hormone (TSH) and human growth hormone (hGH) concentrations showed a 12- and 35-fold increase from baseline values after 30-40 hr.
37 1333962 During blockade with atropine the responses of plasma prolactin was reduced, with a slight but significant reduction in the growth hormone response, and although a similar maximum response of plasma ACTH was achieved, this rise was delayed.
38 1338326 The synergism between insulin and cortisol in stimulating energy deposition, associated with a decreased effect of corticotropin-releasing factor in stimulating energy expenditure, is likely to contribute to the development of obesity.
39 1517373 The ACTH and cortisol responses to CRH were normal in two, blunted in one, and suppressed in four patients.
40 1518441 Particularly in the ectopic growth hormone-releasing hormone (GHRH) syndrome, Sandostatin is unequivocally effective and, in the ectopic corticotropin syndrome selected cases can be treated successfully with Sandostatin, leading to marked clinical improvement.
41 1591027 We reported a 16-year-old boy suffering from dwarfism, diabetes insipidus and progressive cerebellar ataxia.
42 1591027 Pituitary hormones (GH and ACTH) sufficiently responded to the loading of hypothalamic hormones such as growth hormone releasing factor and corticotropin releasing factor, in spite of poor responses of GH under the insulin stimulation or sleep.
43 1649812 Among the results of other endocrinological examinations conducted to find the etiological cause of the hyperglycemic coma, which seemed to be unusual for ectopic ACTH syndrome, the plasma somatostatin level was abnormally high.
44 1649812 Metastatic tumors in the liver obtained at the time of autopsy contained large amounts of both ACTH and somatostatin, and gel filtration studies revealed that the peptides produced by the tumor had the molecular sizes of the biologically active forms of the respective peptides.
45 1649812 Among the results of other endocrinological examinations conducted to find the etiological cause of the hyperglycemic coma, which seemed to be unusual for ectopic ACTH syndrome, the plasma somatostatin level was abnormally high.
46 1649812 Metastatic tumors in the liver obtained at the time of autopsy contained large amounts of both ACTH and somatostatin, and gel filtration studies revealed that the peptides produced by the tumor had the molecular sizes of the biologically active forms of the respective peptides.
47 1652435 Once the diagnosis of Cushing's syndrome is made with certainty, an initial separation into ACTH-dependent versus ACTH-independent categories is made on the basis of the plasma ACTH response to CRH.
48 1652435 Patients with an ACTH-dependent process are then divided into eutopic versus ectopic sources on the basis of the central to peripheral gradient of ACTH measured in the inferior petrosal sinuses simultaneously 3 to 5 minutes after the administration of CRH, 1 microgram/kg.
49 1652435 Once the diagnosis of Cushing's syndrome is made with certainty, an initial separation into ACTH-dependent versus ACTH-independent categories is made on the basis of the plasma ACTH response to CRH.
50 1652435 Patients with an ACTH-dependent process are then divided into eutopic versus ectopic sources on the basis of the central to peripheral gradient of ACTH measured in the inferior petrosal sinuses simultaneously 3 to 5 minutes after the administration of CRH, 1 microgram/kg.
51 1666347 In view of the immune-mediated nature of Type 1 (insulin-dependent) diabetes mellitus, 49 recently diagnosed diabetic patients were investigated in terms of serum 1,25-(OH)2D3-levels, 25-hydroxyvitamin D3(25-(OH)D3), alpha-MSH and ACTH, and compared with 42 healthy controls.
52 1666347 No difference was found in the mean and median values of alpha-MSH and ACTH between IDDM patients and controls, although patients exhibited much higher variation of alpha-MSH levels than did controls.
53 1666347 In view of the immune-mediated nature of Type 1 (insulin-dependent) diabetes mellitus, 49 recently diagnosed diabetic patients were investigated in terms of serum 1,25-(OH)2D3-levels, 25-hydroxyvitamin D3(25-(OH)D3), alpha-MSH and ACTH, and compared with 42 healthy controls.
54 1666347 No difference was found in the mean and median values of alpha-MSH and ACTH between IDDM patients and controls, although patients exhibited much higher variation of alpha-MSH levels than did controls.
55 1671798 The effect of insulin and insulin-like growth factors were examined in closer detail because of the clinical association between insulin and hyperandrogenism.
56 1671798 Pituitary hormones and hypothalamic releasing factors, such as human ACTH (10 nM), beta-endorphin (10 nM), beta-lipotropin (10 nM), alpha-MSH (10 nM), gamma 3-MSH (10 nM), ovine luteinizing hormone (10 ng/ml), ovine follicle-stimulating hormone (10 ng/ml), ovine thyroid-stimulating hormone (10 ng/ml), rat growth hormone (10 ng/ml), rat prolactin (10 ng/ml), rat corticotropin-releasing factor (10 nM), luteinizing hormone-releasing factor (10 nM), thyrotropin-releasing factor (10 nM), human growth hormone-releasing factor (10 nM), and somatostatin (10 nM), have no significant effects on aromatase activity.
57 1671798 Porcine inhibin A (10 ng/ml) and porcine activin AB (10 ng/ml), two ovarian hormones with structural transforming homology to transforming growth factor-beta, also have no effect on aromatase activity.
58 1671798 Although basic fibroblast growth factor (1-100 ng/ml), acidic fibroblast growth factor (1 ng/ml), epidermal growth factor (1 ng/ml), platelet-derived growth factor (1 ng/ml), tumor necrosis factor (1 ng/ml), and transforming growth factor-beta 1 (1 ng/ml) have no effect on basal aromatase activity in human skin fibroblasts, all of these growth factors inhibited the ability of dibutyryladenosine 3',5'-cyclic monophosphate to stimulate aromatase activity.
59 1671798 In contrast, both insulin (100 pg/ml-10 ng/ml) and insulin-like growth factor-1 (1-100 ng/ml) had no effect on cAMP-stimulated aromatase but potentiated the action of dexamethasone (100 nM).
60 1671798 On the basis of the results presented here, it is interesting to speculate that the hyperandrogenism that is often associated with insulin resistance may be due to a combination of growth factor-mediated inhibition of aromatase activity and the failure of peripheral tissues to respond to insulin and metabolize androgens to estrogens.
61 1691431 Marked sex differences in lean control mice were found at 3 weeks of age in pancreatic Met-enkephalin-LI and galanin-LI (with two- to threefold higher content in males).
62 1691431 Low pancreatic content (50% to 70% lower than in control mice) of galanin-LI, Met-enkephalin-LI and Leu-enkephalin-LI was associated with hyperinsulinemia in male B6 ob/ob and db/db mice at 3 weeks of age, though not in B6 db/db females and not in BKs db/db mice of either sex.
63 1691431 Marked sex differences in lean control mice were found at 3 weeks of age in pancreatic Met-enkephalin-LI and galanin-LI (with two- to threefold higher content in males).
64 1691431 Low pancreatic content (50% to 70% lower than in control mice) of galanin-LI, Met-enkephalin-LI and Leu-enkephalin-LI was associated with hyperinsulinemia in male B6 ob/ob and db/db mice at 3 weeks of age, though not in B6 db/db females and not in BKs db/db mice of either sex.
65 1701038 Colchicine treatment alone resulted in appearance of galanin-, dynorphin-, cholecystokinin-, [Leu]enkephalin- and thyrotropin-releasing hormone-positive cells.
66 1701038 When salt-loaded rats received colchicine, corticotropin-releasing factor- and peptide histidine-isoleucine-like immunoreactivity in addition increased, whereas galanin- and dynorphin-like immunoreactivity markedly decreased.
67 1701038 The Brattleboro rats resembled untreated rats, except their lack of vasopressin-like immunoreactivity, the marked increase in tyrosine hydroxylase-like immunoreactivity, and smaller increase in galanin- and dynorphin-like immunoreactivity.
68 1701038 Addition of colchicine to Brattleboro rats resulted in some distinct further changes in that dynorphin-like immunoreactivity decreased in some neurons and that [Leu]enkephalin-, corticotropin-releasing factor- and peptide histidine-isoleucine-like immunoreactivity increased substantially.
69 1701038 However, a marked difference in immunoreactive [Leu]enkephalin levels was observed with no difference in dynorphin-like immunoreactivity, and opposite changes in galanin-like immunoreactivity.
70 1701038 Vasopressin-containing neurons primarily express tyrosine hydroxylase, galanin, dynorphin, [Leu]enkephalin and peptide histidine-isoleucine, and to a minor extent cholecystokinin and thyrotropin-releasing hormone.
71 1701038 Oxytocin-containing neurons mainly have cholecystokinin and corticotropin-releasing factor, and to a minor extent galanin, dynorphin, [Leu]enkephalin and thyrotropin-releasing hormone.
72 1701038 Colchicine treatment alone resulted in appearance of galanin-, dynorphin-, cholecystokinin-, [Leu]enkephalin- and thyrotropin-releasing hormone-positive cells.
73 1701038 When salt-loaded rats received colchicine, corticotropin-releasing factor- and peptide histidine-isoleucine-like immunoreactivity in addition increased, whereas galanin- and dynorphin-like immunoreactivity markedly decreased.
74 1701038 The Brattleboro rats resembled untreated rats, except their lack of vasopressin-like immunoreactivity, the marked increase in tyrosine hydroxylase-like immunoreactivity, and smaller increase in galanin- and dynorphin-like immunoreactivity.
75 1701038 Addition of colchicine to Brattleboro rats resulted in some distinct further changes in that dynorphin-like immunoreactivity decreased in some neurons and that [Leu]enkephalin-, corticotropin-releasing factor- and peptide histidine-isoleucine-like immunoreactivity increased substantially.
76 1701038 However, a marked difference in immunoreactive [Leu]enkephalin levels was observed with no difference in dynorphin-like immunoreactivity, and opposite changes in galanin-like immunoreactivity.
77 1701038 Vasopressin-containing neurons primarily express tyrosine hydroxylase, galanin, dynorphin, [Leu]enkephalin and peptide histidine-isoleucine, and to a minor extent cholecystokinin and thyrotropin-releasing hormone.
78 1701038 Oxytocin-containing neurons mainly have cholecystokinin and corticotropin-releasing factor, and to a minor extent galanin, dynorphin, [Leu]enkephalin and thyrotropin-releasing hormone.
79 1701038 Colchicine treatment alone resulted in appearance of galanin-, dynorphin-, cholecystokinin-, [Leu]enkephalin- and thyrotropin-releasing hormone-positive cells.
80 1701038 When salt-loaded rats received colchicine, corticotropin-releasing factor- and peptide histidine-isoleucine-like immunoreactivity in addition increased, whereas galanin- and dynorphin-like immunoreactivity markedly decreased.
81 1701038 The Brattleboro rats resembled untreated rats, except their lack of vasopressin-like immunoreactivity, the marked increase in tyrosine hydroxylase-like immunoreactivity, and smaller increase in galanin- and dynorphin-like immunoreactivity.
82 1701038 Addition of colchicine to Brattleboro rats resulted in some distinct further changes in that dynorphin-like immunoreactivity decreased in some neurons and that [Leu]enkephalin-, corticotropin-releasing factor- and peptide histidine-isoleucine-like immunoreactivity increased substantially.
83 1701038 However, a marked difference in immunoreactive [Leu]enkephalin levels was observed with no difference in dynorphin-like immunoreactivity, and opposite changes in galanin-like immunoreactivity.
84 1701038 Vasopressin-containing neurons primarily express tyrosine hydroxylase, galanin, dynorphin, [Leu]enkephalin and peptide histidine-isoleucine, and to a minor extent cholecystokinin and thyrotropin-releasing hormone.
85 1701038 Oxytocin-containing neurons mainly have cholecystokinin and corticotropin-releasing factor, and to a minor extent galanin, dynorphin, [Leu]enkephalin and thyrotropin-releasing hormone.
86 1790277 In the hypothalamus-hypophysis study, reserves of thyrotropin (TSH), prolactin (PRL), gonadotropins (FSH and LH), growth hormone (GH), adrenocorticotropin (ACTH) and cortisol were assessed.
87 1851181 Lack of enhanced responsiveness of plasma 18-hydroxycorticosterone and aldosterone to adrenocorticotropin as well as to angiotensin-II during moderate sodium depletion in type II diabetic subjects with normoreninemia.
88 1851181 Responses of plasma aldosterone (PA) and its precursor steroids to alpha ACTH-(1-24) (85.2 nmol, iv) injection and graded angiotensin-II (AII) infusions (3.90 and 7.80 pmol/kg.min for 30 min at each dose) on both 170 and 100 mmol sodium intakes were assessed in 25 type II diabetic subjects with normoreninemia and 11 age-matched normal subjects.
89 1851181 These results indicate a lack of enhanced responsiveness of plasma 18-OHB and PA to both ACTH and AII during moderate sodium restriction in nonazotemic type II diabetic subjects with normoreninemia.
90 1851181 It appears that these subjects have selective unresponsiveness of adrenal zona glomerulosa to sodium depletion per se, but not to ACTH or AII.
91 1851181 Lack of enhanced responsiveness of plasma 18-hydroxycorticosterone and aldosterone to adrenocorticotropin as well as to angiotensin-II during moderate sodium depletion in type II diabetic subjects with normoreninemia.
92 1851181 Responses of plasma aldosterone (PA) and its precursor steroids to alpha ACTH-(1-24) (85.2 nmol, iv) injection and graded angiotensin-II (AII) infusions (3.90 and 7.80 pmol/kg.min for 30 min at each dose) on both 170 and 100 mmol sodium intakes were assessed in 25 type II diabetic subjects with normoreninemia and 11 age-matched normal subjects.
93 1851181 These results indicate a lack of enhanced responsiveness of plasma 18-OHB and PA to both ACTH and AII during moderate sodium restriction in nonazotemic type II diabetic subjects with normoreninemia.
94 1851181 It appears that these subjects have selective unresponsiveness of adrenal zona glomerulosa to sodium depletion per se, but not to ACTH or AII.
95 1851181 Lack of enhanced responsiveness of plasma 18-hydroxycorticosterone and aldosterone to adrenocorticotropin as well as to angiotensin-II during moderate sodium depletion in type II diabetic subjects with normoreninemia.
96 1851181 Responses of plasma aldosterone (PA) and its precursor steroids to alpha ACTH-(1-24) (85.2 nmol, iv) injection and graded angiotensin-II (AII) infusions (3.90 and 7.80 pmol/kg.min for 30 min at each dose) on both 170 and 100 mmol sodium intakes were assessed in 25 type II diabetic subjects with normoreninemia and 11 age-matched normal subjects.
97 1851181 These results indicate a lack of enhanced responsiveness of plasma 18-OHB and PA to both ACTH and AII during moderate sodium restriction in nonazotemic type II diabetic subjects with normoreninemia.
98 1851181 It appears that these subjects have selective unresponsiveness of adrenal zona glomerulosa to sodium depletion per se, but not to ACTH or AII.
99 1851181 Lack of enhanced responsiveness of plasma 18-hydroxycorticosterone and aldosterone to adrenocorticotropin as well as to angiotensin-II during moderate sodium depletion in type II diabetic subjects with normoreninemia.
100 1851181 Responses of plasma aldosterone (PA) and its precursor steroids to alpha ACTH-(1-24) (85.2 nmol, iv) injection and graded angiotensin-II (AII) infusions (3.90 and 7.80 pmol/kg.min for 30 min at each dose) on both 170 and 100 mmol sodium intakes were assessed in 25 type II diabetic subjects with normoreninemia and 11 age-matched normal subjects.
101 1851181 These results indicate a lack of enhanced responsiveness of plasma 18-OHB and PA to both ACTH and AII during moderate sodium restriction in nonazotemic type II diabetic subjects with normoreninemia.
102 1851181 It appears that these subjects have selective unresponsiveness of adrenal zona glomerulosa to sodium depletion per se, but not to ACTH or AII.
103 1963254 Argyrophil and beta-endorphin immunoreactive cells in focal islet-cell adenomatosis and insulin-producing islet-cell adenomata.
104 1963621 To ascertain whether the dawn phenomenon occurs in normal adolescents and, if so, to determine its mechanism, we measured nocturnal plasma glucose, insulin, glucagon, growth hormone, cortisol, and adrenocorticotropic hormone (ACTH) levels between 01.00 and 08.00 h in 10 healthy adolescents.
105 1963621 ACTH correlated with MCRI (r = 0.66; p = 0.002) and prehepatic insulin secretion (r = 0.75; p less than 0.01).
106 1963621 To ascertain whether the dawn phenomenon occurs in normal adolescents and, if so, to determine its mechanism, we measured nocturnal plasma glucose, insulin, glucagon, growth hormone, cortisol, and adrenocorticotropic hormone (ACTH) levels between 01.00 and 08.00 h in 10 healthy adolescents.
107 1963621 ACTH correlated with MCRI (r = 0.66; p = 0.002) and prehepatic insulin secretion (r = 0.75; p less than 0.01).
108 1966250 As it's well known from the clinic, human syndromes depending on pituitary GH, ACTH and PRL secreting tumors are associated with alteration of glucose homeostasis.
109 2167193 Endogenous elevation of plasma renin activity and exogenous corticotropin were used to study steroidogenesis.
110 2167193 In 1977, potassium, baseline cortisol, aldosterone, and renin activity were normal; renin activity increased normally with posture; and cortisol responded normally to ACTH infusion.
111 2167193 Endogenous hyperreninemia and basal elevations of 18-OHB, accompanied by limited aldosterone responsiveness to renin and ACTH, suggest the presence of a partial corticosterone methyl oxidase type II defect.
112 2167193 Endogenous elevation of plasma renin activity and exogenous corticotropin were used to study steroidogenesis.
113 2167193 In 1977, potassium, baseline cortisol, aldosterone, and renin activity were normal; renin activity increased normally with posture; and cortisol responded normally to ACTH infusion.
114 2167193 Endogenous hyperreninemia and basal elevations of 18-OHB, accompanied by limited aldosterone responsiveness to renin and ACTH, suggest the presence of a partial corticosterone methyl oxidase type II defect.
115 2167193 Endogenous elevation of plasma renin activity and exogenous corticotropin were used to study steroidogenesis.
116 2167193 In 1977, potassium, baseline cortisol, aldosterone, and renin activity were normal; renin activity increased normally with posture; and cortisol responded normally to ACTH infusion.
117 2167193 Endogenous hyperreninemia and basal elevations of 18-OHB, accompanied by limited aldosterone responsiveness to renin and ACTH, suggest the presence of a partial corticosterone methyl oxidase type II defect.
118 2172669 The plasma levels of the following hormones were measured: basal thyroxine (T4), estradiol and cortisol; and also follicle-stimulating hormone (FSH), luteinizing hormone (LH), growth hormone (GH), thyrotropin (TSH), prolactin (PRL) and adrenocorticotropic hormone (ACTH), basally and after acute challenge with LH releasing hormone (LHRH), GRF (1-29)NH2 or insulin hypoglycemia, TSH releasing hormone (TRH) and lysine-8-vasopressin, respectively.
119 2216273 Thyrotropin-releasing hormone and ACTH stimulation tests were also abnormal, requiring the institution of thyroid and cortisol replacement therapy.
120 2226124 A follow-up of nine of the hyperglycaemic cases showed a significant decline in beta-endorphin and insulin levels with recovery.
121 2232625 The aim of the study was to investigate the influence of 40 mg of the beta-blocker penbutolol (Betapressin TM; Hoechst Ltd., Frankfurt/Main) in comparison to placebo on the insulin consumption on the blood sugar profile in twelve insulin-dependent diabetes (IDDM) patients.
122 2232625 The same was also true for hormonal parameters as STH, ACTH, cortisol, and catecholamines.
123 2233277 In contrast, db/db mice of both C57BL/6J and C57BL/KsJ strains exhibited alterations in a total of four peptides in three brain areas: lower concentration of somatostatin-LI in median eminence, higher Met-enkephalin-LI in dorsal vagal complex of the medulla oblongata, higher substance P-LI and lower vasoactive intestinal polypeptide (VIP)-LI in amygdala.
124 2480454 In the hypothalamus and in the striatum of diabetic rats, there are significant higher levels of substance P and met-enkephalin, respectively.
125 2480454 Conversely, in the lumbar cord of diabetic animals, the levels of substance P and met-enkephalin are significantly reduced.
126 2480454 In the hypothalamus and in the striatum of diabetic rats, there are significant higher levels of substance P and met-enkephalin, respectively.
127 2480454 Conversely, in the lumbar cord of diabetic animals, the levels of substance P and met-enkephalin are significantly reduced.
128 2502884 Experiments on rats using the primary monolayer culture of isolated islet cells proved that insulin secretion is directly modulated by the growth hormone (GH), C-terminal tetrapeptide of cholecystokinin, thyroliberin, and met-enkephalin, and by certain blood plasma factors of diabetes I patients.
129 2502884 The blood plasma factors of IdDM patients influence the islets of Langerhans activity by either stimulating or depressing the secretory function of insulin producing cells.
130 2513414 Concomitantly with such transductional alteration detected in chronic diabetes, we observed a marked increase of the striatal content of met-enkephalin, which is known to utilize Gi/Go proteins for inhibition of adenylate cyclase.
131 2523766 Changes in met-enkephalin and beta-endorphin contents in the hypothalamus and the pituitary in diabetic rats: effects of insulin therapy.
132 2523766 Immunoreactive (IR)-met-enkephalin and beta-endorphin contents in the hypothalamus and the pituitary were measured in alloxan-diabetic rats with or without insulin treatment. 2.
133 2523766 Changes in met-enkephalin and beta-endorphin contents in the hypothalamus and the pituitary in diabetic rats: effects of insulin therapy.
134 2523766 Immunoreactive (IR)-met-enkephalin and beta-endorphin contents in the hypothalamus and the pituitary were measured in alloxan-diabetic rats with or without insulin treatment. 2.
135 2527831 Immunoreactive beta-endorphin and met- and leu-enkephalin contents in pancreas and pituitary of corpulent (cp/cp) rats.
136 2527831 In the present study, content of three opioid peptide immunoreactivities (beta-endorphin, met-enkephalin and leu-enkephalin) were measured in pituitary and pancreas of two recently described, genetically obese rats, the LA/N-cp and the SHR/N-cp.
137 2527831 There were no significant differences in content of immunoreactive beta-endorphin, met-enkephalin or leu-enkephalin in whole pituitary, posterior or anterior lobes of the pituitary, or pancreas which could be ascribed to the effect of the obese phenotype.
138 2527831 Immunoreactive beta-endorphin and met- and leu-enkephalin contents in pancreas and pituitary of corpulent (cp/cp) rats.
139 2527831 In the present study, content of three opioid peptide immunoreactivities (beta-endorphin, met-enkephalin and leu-enkephalin) were measured in pituitary and pancreas of two recently described, genetically obese rats, the LA/N-cp and the SHR/N-cp.
140 2527831 There were no significant differences in content of immunoreactive beta-endorphin, met-enkephalin or leu-enkephalin in whole pituitary, posterior or anterior lobes of the pituitary, or pancreas which could be ascribed to the effect of the obese phenotype.
141 2527831 Immunoreactive beta-endorphin and met- and leu-enkephalin contents in pancreas and pituitary of corpulent (cp/cp) rats.
142 2527831 In the present study, content of three opioid peptide immunoreactivities (beta-endorphin, met-enkephalin and leu-enkephalin) were measured in pituitary and pancreas of two recently described, genetically obese rats, the LA/N-cp and the SHR/N-cp.
143 2527831 There were no significant differences in content of immunoreactive beta-endorphin, met-enkephalin or leu-enkephalin in whole pituitary, posterior or anterior lobes of the pituitary, or pancreas which could be ascribed to the effect of the obese phenotype.
144 2537845 Adrenocorticotropin-independent bilateral macronodular adrenal hyperplasia: an unusual cause of Cushing's syndrome.
145 2537845 Inappropriate ACTH secretion with bilateral diffuse or macronodular adrenal hyperplasia is the most common cause of Cushing's syndrome.
146 2537845 This report describes a patient with Cushing's syndrome and feminization due to ACTH-independent bilateral macronodular adrenal hyperplasia.
147 2537845 Cushing's syndrome with feminization due to ACTH-independent bilateral macronodular adrenal hyperplasia is an unusual process of unknown etiology that should be included with the other known causes of Cushing's syndrome.
148 2537845 Adrenocorticotropin-independent bilateral macronodular adrenal hyperplasia: an unusual cause of Cushing's syndrome.
149 2537845 Inappropriate ACTH secretion with bilateral diffuse or macronodular adrenal hyperplasia is the most common cause of Cushing's syndrome.
150 2537845 This report describes a patient with Cushing's syndrome and feminization due to ACTH-independent bilateral macronodular adrenal hyperplasia.
151 2537845 Cushing's syndrome with feminization due to ACTH-independent bilateral macronodular adrenal hyperplasia is an unusual process of unknown etiology that should be included with the other known causes of Cushing's syndrome.
152 2537845 Adrenocorticotropin-independent bilateral macronodular adrenal hyperplasia: an unusual cause of Cushing's syndrome.
153 2537845 Inappropriate ACTH secretion with bilateral diffuse or macronodular adrenal hyperplasia is the most common cause of Cushing's syndrome.
154 2537845 This report describes a patient with Cushing's syndrome and feminization due to ACTH-independent bilateral macronodular adrenal hyperplasia.
155 2537845 Cushing's syndrome with feminization due to ACTH-independent bilateral macronodular adrenal hyperplasia is an unusual process of unknown etiology that should be included with the other known causes of Cushing's syndrome.
156 2537845 Adrenocorticotropin-independent bilateral macronodular adrenal hyperplasia: an unusual cause of Cushing's syndrome.
157 2537845 Inappropriate ACTH secretion with bilateral diffuse or macronodular adrenal hyperplasia is the most common cause of Cushing's syndrome.
158 2537845 This report describes a patient with Cushing's syndrome and feminization due to ACTH-independent bilateral macronodular adrenal hyperplasia.
159 2537845 Cushing's syndrome with feminization due to ACTH-independent bilateral macronodular adrenal hyperplasia is an unusual process of unknown etiology that should be included with the other known causes of Cushing's syndrome.
160 2544774 The 125I-ANF binding to retinal particulate preparations was not inhibited by 1 microM concentration of somatostatin, vasopressin, vasoactive intestinal peptide, adrenocorticotropin, thyrotropin releasing hormone, or leu-enkephalin.
161 2545066 Plasma 18-hydroxycorticosterone and aldosterone responses to angiotensin II and corticotropin in diabetic patients with hyporeninemic and normoreninemic hypoaldosteronism.
162 2546964 Effect of administration of corticotropin-releasing hormone and glucocorticoid on arginine vasopressin response to osmotic stimulus in normal subjects and patients with hypocorticotropinism without overt diabetes insipidus.
163 2546964 We examined the effect of CRH administration on the response of plasma arginine vasopressin (AVP) induced by an osmotic stimulus in six normal subjects and five patients with hypocorticotropinism without overt diabetes insipidus (four patients with Sheehan's syndrome and one with idiopathic pituitary dwarfism with ACTH deficiency).
164 2546964 Based on the relatively low plasma AVP response to the osmotic stimulus in patients and their lower plasma AVP levels and higher plasma osmolality under basal conditions, we suggest that patients with hypocorticotropinism have partial diabetes insipidus, in which impairment of central CRH action might be, at least in part, involved.
165 2565915 Suppression of ectopic adrenocorticotropin secretion by the long-acting somatostatin analog octreotide.
166 2565915 The long-acting somatostatin analog (octreotide) was administered to a 37-yr-old woman with the ectopic ACTH syndrome.
167 2565915 Suppression of ectopic adrenocorticotropin secretion by the long-acting somatostatin analog octreotide.
168 2565915 The long-acting somatostatin analog (octreotide) was administered to a 37-yr-old woman with the ectopic ACTH syndrome.
169 2593179 Substance P and met-enkephalin content are remarkably reduced throughout the small intestine, whereas vasoactive intestinal polypeptide levels (VIP) are significantly increased in the duodenum.
170 2747219 Dystrophic axons contained substance P- and gastrin-releasing peptide (gastrin-releasing peptide/bombesin)-like staining but were not labeled by antisera directed against vasoactive intestinal peptide, dynorphin-B, somatostatin, leu- and met-enkephalin and neuropeptide tyrosine.
171 2747219 Substance P and gastrin-releasing peptide/bombesin containing subpopulations of presynaptic elements in prevertebral sympathetic ganglia are thought to participate in local reflex control of bowel motility and lesions preferentially involving these elements may contribute to bowel dysfunction.
172 2805586 Analysis of the pro-opiomelanocortin gene in non-insulin dependent diabetic families.
173 2805586 Products of the pro-opiomelanocortin gene have been shown to have marked effects on insulin secretion.
174 2805586 Selective antagonists of beta-endorphin have been reported to correct the impaired insulin secretory response to glucose seen in non-insulin dependent diabetes.
175 2805586 Inherited defects in or near the pro-opiomelanocortin gene locus are unlikely to be directly involved in the aetiology of non-insulin dependent diabetes.
176 2805586 Analysis of the pro-opiomelanocortin gene in non-insulin dependent diabetic families.
177 2805586 Products of the pro-opiomelanocortin gene have been shown to have marked effects on insulin secretion.
178 2805586 Selective antagonists of beta-endorphin have been reported to correct the impaired insulin secretory response to glucose seen in non-insulin dependent diabetes.
179 2805586 Inherited defects in or near the pro-opiomelanocortin gene locus are unlikely to be directly involved in the aetiology of non-insulin dependent diabetes.
180 2805586 Analysis of the pro-opiomelanocortin gene in non-insulin dependent diabetic families.
181 2805586 Products of the pro-opiomelanocortin gene have been shown to have marked effects on insulin secretion.
182 2805586 Selective antagonists of beta-endorphin have been reported to correct the impaired insulin secretory response to glucose seen in non-insulin dependent diabetes.
183 2805586 Inherited defects in or near the pro-opiomelanocortin gene locus are unlikely to be directly involved in the aetiology of non-insulin dependent diabetes.
184 2805586 Analysis of the pro-opiomelanocortin gene in non-insulin dependent diabetic families.
185 2805586 Products of the pro-opiomelanocortin gene have been shown to have marked effects on insulin secretion.
186 2805586 Selective antagonists of beta-endorphin have been reported to correct the impaired insulin secretory response to glucose seen in non-insulin dependent diabetes.
187 2805586 Inherited defects in or near the pro-opiomelanocortin gene locus are unlikely to be directly involved in the aetiology of non-insulin dependent diabetes.
188 2811647 In several patients stimulation test with specific releasing factors (TRH, LHRH, oCRH) were carried out.
189 2811647 The maintained response of ACTH to CRH (even increased after acute withdrawal therapy) indicated that AVP is not necessary to ensure normal function to the CRH-ACTH axis.
190 2825930 To determine whether or not prolactin, as well as ACTH, was involved in the control of adrenal weight and steroid release, lesions in the median eminence which had previously resulted in impaired steroid release and atrophy of the adrenal were placed in animals in which the plasma prolactin was allowed to rise as a result of the lesions or prevented from rising by the administration of the dopamine agonist, CB-154.
191 2834429 Plasma beta-endorphin, free fatty acids and blood lipid changes in type 2 (non-insulin dependent) diabetic patients.
192 2834429 Plasma beta EP, together with plasma beta-lipotropin (beta LPH), ACTH, cortisol and plasma insulin (IRI), was measured by RIA after silicic acid plasma extraction and Sephedex G-75 column chromatography.
193 2834429 Plasma beta-endorphin, free fatty acids and blood lipid changes in type 2 (non-insulin dependent) diabetic patients.
194 2834429 Plasma beta EP, together with plasma beta-lipotropin (beta LPH), ACTH, cortisol and plasma insulin (IRI), was measured by RIA after silicic acid plasma extraction and Sephedex G-75 column chromatography.
195 2836651 Stimulation by hCRF of C-peptide release in type 2 diabetics during concomitant opioid receptor blockade.
196 2836651 Administration of synthetic human corticotropin-releasing factor (hCRF, 2 micrograms/kg body weight) during simultaneous application of the opioid antagonist naloxone (1.6 mg i.v. bolus, followed by an infusion at a rate of 1.2 mg/h) produced a significant increase in plasma C-peptide levels of six male Type 2 diabetic patients which even exceeded the postprandial values.
197 2836651 Such a mechanism may underlie the stimulatory action of hCRF/naloxone on B cells and would explain the absent reaction of peripheral venous plasma C-peptide to hCRF alone as well as the amplifying effect of simultaneous opioid receptor blockade.
198 2840794 In the present study, basal serum cortisol and ACTH levels were measured in normoprolactinemic amenorrheic patients with (N = 14) and without (N = 7) insulin-dependent diabetes mellitus.
199 2844109 Pituitary function was assessed by evaluating basal ACTH concentrations and results of a growth hormone stimulation test before and 1 and 12 weeks after hypophysectomy, an ACTH stimulation test, a thyrotropin-releasing hormone-stimulation test, and a modified water deprivation/vasopressin response test before and 1, 4, 8, and 12 weeks after hypophysectomy.
200 2846679 A 45-year-old man with type I diabetes mellitus of 25-yr duration and well controlled by conventional insulin therapy developed an isolated adrenocorticotropic hormone (ACTH) deficiency.
201 2848001 Diabetes insipidus and hyperadrenocorticism associated with high plasma adrenocorticotropin concentration and a hypothalamic/pituitary mass in a dog.
202 2848001 Central diabetes insipidus was diagnosed in association with a dexamethasone-insuppressible adrenocorticotropin-secreting tumor in a dog.
203 2848001 Diabetes insipidus and hyperadrenocorticism associated with high plasma adrenocorticotropin concentration and a hypothalamic/pituitary mass in a dog.
204 2848001 Central diabetes insipidus was diagnosed in association with a dexamethasone-insuppressible adrenocorticotropin-secreting tumor in a dog.
205 2851469 To study the integrity of the hypothalamic-pituitary and the sympatho-adrenal systems, the responses of pituitary hormones, beta-endorphin, glucagon and adrenaline to acute insulin-induced hypoglycaemia (0.2 units/kg) were examined in 16 patients with Type 1 diabetes who did not have autonomic neuropathy.
206 2851469 The mean responses of glucagon, adrenaline, adrenocorticotrophic hormone, prolactin and beta-endorphin were similar in all 3 groups, but the mean responses of growth hormone were lower in both diabetic groups than in the normal group (p less than 0.05).
207 2851469 To study the integrity of the hypothalamic-pituitary and the sympatho-adrenal systems, the responses of pituitary hormones, beta-endorphin, glucagon and adrenaline to acute insulin-induced hypoglycaemia (0.2 units/kg) were examined in 16 patients with Type 1 diabetes who did not have autonomic neuropathy.
208 2851469 The mean responses of glucagon, adrenaline, adrenocorticotrophic hormone, prolactin and beta-endorphin were similar in all 3 groups, but the mean responses of growth hormone were lower in both diabetic groups than in the normal group (p less than 0.05).
209 2863707 Increased plasma levels of immunoreactive beta-endorphin and corticotropin in non-insulin-dependent diabetes.
210 2866128 The effect of met-enkephalin and naloxone on somatostatin and insulin secretion from the isolated, perfused rat pancreas.
211 2866128 The effect of met-enkephalin and the opiate antagonist, naloxone, on somatostatin and insulin secretion from the isolated, perfused rat pancreas has been studied during perfusion with 300 mg/dl glucose.
212 2866128 In response to a gradient of met-enkephalin from 0 to 10(-5) M, release of somatostatin was inhibited at low concentrations and stimulated at high concentrations.
213 2866128 A gradient of met-enkephalin from 0 to 10(-6) M caused only an inhibition of somatostatin release, whereas insulin release was stimulated.
214 2866128 The effects of met-enkephalin on somatostatin release were antagonized by naloxone (10(-6) M).
215 2866128 Naloxone (10(-6) M) alone changed the endocrine secretions by decreasing somatostatin release and by stimulating insulin release.
216 2866128 The effect of met-enkephalin and naloxone on somatostatin and insulin secretion from the isolated, perfused rat pancreas.
217 2866128 The effect of met-enkephalin and the opiate antagonist, naloxone, on somatostatin and insulin secretion from the isolated, perfused rat pancreas has been studied during perfusion with 300 mg/dl glucose.
218 2866128 In response to a gradient of met-enkephalin from 0 to 10(-5) M, release of somatostatin was inhibited at low concentrations and stimulated at high concentrations.
219 2866128 A gradient of met-enkephalin from 0 to 10(-6) M caused only an inhibition of somatostatin release, whereas insulin release was stimulated.
220 2866128 The effects of met-enkephalin on somatostatin release were antagonized by naloxone (10(-6) M).
221 2866128 Naloxone (10(-6) M) alone changed the endocrine secretions by decreasing somatostatin release and by stimulating insulin release.
222 2866128 The effect of met-enkephalin and naloxone on somatostatin and insulin secretion from the isolated, perfused rat pancreas.
223 2866128 The effect of met-enkephalin and the opiate antagonist, naloxone, on somatostatin and insulin secretion from the isolated, perfused rat pancreas has been studied during perfusion with 300 mg/dl glucose.
224 2866128 In response to a gradient of met-enkephalin from 0 to 10(-5) M, release of somatostatin was inhibited at low concentrations and stimulated at high concentrations.
225 2866128 A gradient of met-enkephalin from 0 to 10(-6) M caused only an inhibition of somatostatin release, whereas insulin release was stimulated.
226 2866128 The effects of met-enkephalin on somatostatin release were antagonized by naloxone (10(-6) M).
227 2866128 Naloxone (10(-6) M) alone changed the endocrine secretions by decreasing somatostatin release and by stimulating insulin release.
228 2866128 The effect of met-enkephalin and naloxone on somatostatin and insulin secretion from the isolated, perfused rat pancreas.
229 2866128 The effect of met-enkephalin and the opiate antagonist, naloxone, on somatostatin and insulin secretion from the isolated, perfused rat pancreas has been studied during perfusion with 300 mg/dl glucose.
230 2866128 In response to a gradient of met-enkephalin from 0 to 10(-5) M, release of somatostatin was inhibited at low concentrations and stimulated at high concentrations.
231 2866128 A gradient of met-enkephalin from 0 to 10(-6) M caused only an inhibition of somatostatin release, whereas insulin release was stimulated.
232 2866128 The effects of met-enkephalin on somatostatin release were antagonized by naloxone (10(-6) M).
233 2866128 Naloxone (10(-6) M) alone changed the endocrine secretions by decreasing somatostatin release and by stimulating insulin release.
234 2866128 The effect of met-enkephalin and naloxone on somatostatin and insulin secretion from the isolated, perfused rat pancreas.
235 2866128 The effect of met-enkephalin and the opiate antagonist, naloxone, on somatostatin and insulin secretion from the isolated, perfused rat pancreas has been studied during perfusion with 300 mg/dl glucose.
236 2866128 In response to a gradient of met-enkephalin from 0 to 10(-5) M, release of somatostatin was inhibited at low concentrations and stimulated at high concentrations.
237 2866128 A gradient of met-enkephalin from 0 to 10(-6) M caused only an inhibition of somatostatin release, whereas insulin release was stimulated.
238 2866128 The effects of met-enkephalin on somatostatin release were antagonized by naloxone (10(-6) M).
239 2866128 Naloxone (10(-6) M) alone changed the endocrine secretions by decreasing somatostatin release and by stimulating insulin release.
240 2866209 Hyperglycaemia lasting for hours, has been produced in unanesthetized cats, rabbits and rats by injection into the cerebral ventricles or the cisterna magna of a variety of drugs (morphine, etorphine, pethidine, beta-endorphin, enkephalin, bombesin, TRH, cholecystokinin, naloxone, propranolol, phentolamine, chloralose, magnesium chloride and GABA).
241 2870337 Plasma immunoreactive beta-endorphin in non-insulin-dependent diabetes.
242 2890560 Immunocytochemistry revealed the tumour cells to store large amounts of enkephalin and somatostatin reactive material and moderate amounts of immunoreactive beta-endorphin and dynorphin.
243 2896134 The present study was aimed at characterizing the effects of beta-endorphin on plasma glucose, insulin and glucagon plasma levels in subjects with type-2 diabetes mellitus.
244 2896134 Infusion of 0.5 mg/h human beta-endorphin produced significant and simultaneous increments in both insulin and glucagon concentrations and decreased plasma glucose levels (-18 +/- 4 mg/dl, 60 min level, p less than 0.01).
245 2896134 When the same diabetics were rendered euglycemic by an insulin infusion (1 mU/kg/min), beta-endorphin did not produce the expected decrease in plasma glucose concentrations nor raise plasma insulin levels; only the response of glucagon was preserved.
246 2896134 In this condition, beta-endorphin produced a significant increase of insulin concentrations, whereas glucagon remained suppressed.
247 2896134 Naloxone (5 mg), an opiate antagonist, did not produce any significant change in the insulin and glucagon responses to beta-endorphin, while somatostatin (0.25 mg/h) completely abolished the hormonal responses to the opioid.
248 2896134 The present study was aimed at characterizing the effects of beta-endorphin on plasma glucose, insulin and glucagon plasma levels in subjects with type-2 diabetes mellitus.
249 2896134 Infusion of 0.5 mg/h human beta-endorphin produced significant and simultaneous increments in both insulin and glucagon concentrations and decreased plasma glucose levels (-18 +/- 4 mg/dl, 60 min level, p less than 0.01).
250 2896134 When the same diabetics were rendered euglycemic by an insulin infusion (1 mU/kg/min), beta-endorphin did not produce the expected decrease in plasma glucose concentrations nor raise plasma insulin levels; only the response of glucagon was preserved.
251 2896134 In this condition, beta-endorphin produced a significant increase of insulin concentrations, whereas glucagon remained suppressed.
252 2896134 Naloxone (5 mg), an opiate antagonist, did not produce any significant change in the insulin and glucagon responses to beta-endorphin, while somatostatin (0.25 mg/h) completely abolished the hormonal responses to the opioid.
253 2896134 The present study was aimed at characterizing the effects of beta-endorphin on plasma glucose, insulin and glucagon plasma levels in subjects with type-2 diabetes mellitus.
254 2896134 Infusion of 0.5 mg/h human beta-endorphin produced significant and simultaneous increments in both insulin and glucagon concentrations and decreased plasma glucose levels (-18 +/- 4 mg/dl, 60 min level, p less than 0.01).
255 2896134 When the same diabetics were rendered euglycemic by an insulin infusion (1 mU/kg/min), beta-endorphin did not produce the expected decrease in plasma glucose concentrations nor raise plasma insulin levels; only the response of glucagon was preserved.
256 2896134 In this condition, beta-endorphin produced a significant increase of insulin concentrations, whereas glucagon remained suppressed.
257 2896134 Naloxone (5 mg), an opiate antagonist, did not produce any significant change in the insulin and glucagon responses to beta-endorphin, while somatostatin (0.25 mg/h) completely abolished the hormonal responses to the opioid.
258 2896134 The present study was aimed at characterizing the effects of beta-endorphin on plasma glucose, insulin and glucagon plasma levels in subjects with type-2 diabetes mellitus.
259 2896134 Infusion of 0.5 mg/h human beta-endorphin produced significant and simultaneous increments in both insulin and glucagon concentrations and decreased plasma glucose levels (-18 +/- 4 mg/dl, 60 min level, p less than 0.01).
260 2896134 When the same diabetics were rendered euglycemic by an insulin infusion (1 mU/kg/min), beta-endorphin did not produce the expected decrease in plasma glucose concentrations nor raise plasma insulin levels; only the response of glucagon was preserved.
261 2896134 In this condition, beta-endorphin produced a significant increase of insulin concentrations, whereas glucagon remained suppressed.
262 2896134 Naloxone (5 mg), an opiate antagonist, did not produce any significant change in the insulin and glucagon responses to beta-endorphin, while somatostatin (0.25 mg/h) completely abolished the hormonal responses to the opioid.
263 2896134 The present study was aimed at characterizing the effects of beta-endorphin on plasma glucose, insulin and glucagon plasma levels in subjects with type-2 diabetes mellitus.
264 2896134 Infusion of 0.5 mg/h human beta-endorphin produced significant and simultaneous increments in both insulin and glucagon concentrations and decreased plasma glucose levels (-18 +/- 4 mg/dl, 60 min level, p less than 0.01).
265 2896134 When the same diabetics were rendered euglycemic by an insulin infusion (1 mU/kg/min), beta-endorphin did not produce the expected decrease in plasma glucose concentrations nor raise plasma insulin levels; only the response of glucagon was preserved.
266 2896134 In this condition, beta-endorphin produced a significant increase of insulin concentrations, whereas glucagon remained suppressed.
267 2896134 Naloxone (5 mg), an opiate antagonist, did not produce any significant change in the insulin and glucagon responses to beta-endorphin, while somatostatin (0.25 mg/h) completely abolished the hormonal responses to the opioid.
268 2905198 Immunohistologic localization of tyrosine hydroxylase (TOH), dopamine-beta-hydroxylase (DBH) and selected neuropeptides (vasoactive intestinal polypeptide, gastrin-releasing peptide (GRP)/bombesin, substance P, Leu-enkephalin, Met-enkephalin, dynorphin B, neuropeptide Y (NPY), somatostatin) was used to investigate the innervation of the small bowel in a rat model of diabetic autonomic neuropathy.
269 2935473 The effect of 5-hydroxytryptamine (5-HT) alteration on brain dopamine (DA), norepinephrine (NE), beta-endorphin (beta E) and immunoreactive insulin (IRI) was studied in Sprague-Dawley diabetic and control rats.
270 2935473 PCPA treatment significantly decreased brain content of 5-HT and 5-hydroxyindole acetic acid (5-HIAA) while it caused significant increase and decrease in brain beta E and insulin levels, respectively, in both normal and diabetic rat.
271 2935473 Meanwhile, the administration of fluoxetine resulted in significant increase in brain content of 5-HT, DA, NE and insulin but significant decline of beta E in diabetic and saline control rats.
272 2935473 The results of this experiment indicate that 5-HT may be regulating both beta E and insulin regardless of the availability of pancreatic insulin.
273 2935694 Beta-endorphin concentrations in the hypothalamus, pituitary and plasma of streptozotocin-diabetic rats with and without insulin substitution therapy.
274 2944783 We have recently shown that in addition to beta-endorphin the opioid peptides Met- and Leu-enkephalin and their apparent precursors are localized in islet endocrine cells of the rat pancreas.
275 2944783 Elevations or decreases (P less than .05) were found in db/db mice (vs. lean littermates) as follows: pituitary content of Met-enkephalin was twofold higher at all ages studied; pituitary free Leu-enkephalin was lower at 4 wk and reversed to higher at 6-30 wk; pancreatic beta-endorphin was 30% lower at 4 wk and reversed to threefold higher at 6-12 wk; Met- and Leu-enkephalin-containing larger peptides were elevated at one or more points between 6 and 12 wk in both the pancreas and the pituitary.
276 2944783 Thus, the onset of overt obesity between 4 and 6 wk of age was accompanied by a marked rise in both pancreatic beta-endorphin and pituitary Leu-enkephalin; similar elevations in these parameters have been reported previously in C57BL/6J ob/ob mice at approximately 12 wk of age.
277 2944783 We have recently shown that in addition to beta-endorphin the opioid peptides Met- and Leu-enkephalin and their apparent precursors are localized in islet endocrine cells of the rat pancreas.
278 2944783 Elevations or decreases (P less than .05) were found in db/db mice (vs. lean littermates) as follows: pituitary content of Met-enkephalin was twofold higher at all ages studied; pituitary free Leu-enkephalin was lower at 4 wk and reversed to higher at 6-30 wk; pancreatic beta-endorphin was 30% lower at 4 wk and reversed to threefold higher at 6-12 wk; Met- and Leu-enkephalin-containing larger peptides were elevated at one or more points between 6 and 12 wk in both the pancreas and the pituitary.
279 2944783 Thus, the onset of overt obesity between 4 and 6 wk of age was accompanied by a marked rise in both pancreatic beta-endorphin and pituitary Leu-enkephalin; similar elevations in these parameters have been reported previously in C57BL/6J ob/ob mice at approximately 12 wk of age.
280 2944783 We have recently shown that in addition to beta-endorphin the opioid peptides Met- and Leu-enkephalin and their apparent precursors are localized in islet endocrine cells of the rat pancreas.
281 2944783 Elevations or decreases (P less than .05) were found in db/db mice (vs. lean littermates) as follows: pituitary content of Met-enkephalin was twofold higher at all ages studied; pituitary free Leu-enkephalin was lower at 4 wk and reversed to higher at 6-30 wk; pancreatic beta-endorphin was 30% lower at 4 wk and reversed to threefold higher at 6-12 wk; Met- and Leu-enkephalin-containing larger peptides were elevated at one or more points between 6 and 12 wk in both the pancreas and the pituitary.
282 2944783 Thus, the onset of overt obesity between 4 and 6 wk of age was accompanied by a marked rise in both pancreatic beta-endorphin and pituitary Leu-enkephalin; similar elevations in these parameters have been reported previously in C57BL/6J ob/ob mice at approximately 12 wk of age.
283 2951394 Beta-endorphin infusion restores acute insulin responses to glucose in type-2 diabetes mellitus.
284 2951394 To address the possibility that an abnormality in pancreatic beta-endorphin activity might contribute to abnormal insulin secretion in diabetes mellitus, we studied the effects of beta-endorphin infusion on islet function in diabetic patients.
285 2951394 The iv infusion of human beta-endorphin at a dose of 0.5 mg/h for 2 h in type-2 non-insulin-dependent diabetic patients (n = 12) raised plasma insulin and glucagon levels and slightly but significantly lowered plasma glucose concentrations. beta-Endorphin infusion also resulted in reappearance of a clear-cut acute insulin response to glucose, while second phase insulin release was increased and glucose disposal accelerated.
286 2951394 Acute insulin and glucagon responses to arginine were not increased by beta-endorphin, suggesting that the effect of the opioid on the B cells of the diabetic patients is specific for glucose.
287 2951394 Beta-endorphin infusion restores acute insulin responses to glucose in type-2 diabetes mellitus.
288 2951394 To address the possibility that an abnormality in pancreatic beta-endorphin activity might contribute to abnormal insulin secretion in diabetes mellitus, we studied the effects of beta-endorphin infusion on islet function in diabetic patients.
289 2951394 The iv infusion of human beta-endorphin at a dose of 0.5 mg/h for 2 h in type-2 non-insulin-dependent diabetic patients (n = 12) raised plasma insulin and glucagon levels and slightly but significantly lowered plasma glucose concentrations. beta-Endorphin infusion also resulted in reappearance of a clear-cut acute insulin response to glucose, while second phase insulin release was increased and glucose disposal accelerated.
290 2951394 Acute insulin and glucagon responses to arginine were not increased by beta-endorphin, suggesting that the effect of the opioid on the B cells of the diabetic patients is specific for glucose.
291 2951394 Beta-endorphin infusion restores acute insulin responses to glucose in type-2 diabetes mellitus.
292 2951394 To address the possibility that an abnormality in pancreatic beta-endorphin activity might contribute to abnormal insulin secretion in diabetes mellitus, we studied the effects of beta-endorphin infusion on islet function in diabetic patients.
293 2951394 The iv infusion of human beta-endorphin at a dose of 0.5 mg/h for 2 h in type-2 non-insulin-dependent diabetic patients (n = 12) raised plasma insulin and glucagon levels and slightly but significantly lowered plasma glucose concentrations. beta-Endorphin infusion also resulted in reappearance of a clear-cut acute insulin response to glucose, while second phase insulin release was increased and glucose disposal accelerated.
294 2951394 Acute insulin and glucagon responses to arginine were not increased by beta-endorphin, suggesting that the effect of the opioid on the B cells of the diabetic patients is specific for glucose.
295 2951394 Beta-endorphin infusion restores acute insulin responses to glucose in type-2 diabetes mellitus.
296 2951394 To address the possibility that an abnormality in pancreatic beta-endorphin activity might contribute to abnormal insulin secretion in diabetes mellitus, we studied the effects of beta-endorphin infusion on islet function in diabetic patients.
297 2951394 The iv infusion of human beta-endorphin at a dose of 0.5 mg/h for 2 h in type-2 non-insulin-dependent diabetic patients (n = 12) raised plasma insulin and glucagon levels and slightly but significantly lowered plasma glucose concentrations. beta-Endorphin infusion also resulted in reappearance of a clear-cut acute insulin response to glucose, while second phase insulin release was increased and glucose disposal accelerated.
298 2951394 Acute insulin and glucagon responses to arginine were not increased by beta-endorphin, suggesting that the effect of the opioid on the B cells of the diabetic patients is specific for glucose.
299 2952536 To determine the role of endogenous opiates in endotoxin-induced glucose-stimulated hyperinsulinism, plasma beta-endorphin, Met-enkephalin, Leu-enkephalin, insulin, and glucose concentrations were measured for 6 h in fasted, anesthetized dogs given LD70 of E. coli endotoxin; endotoxin and glucose; endotoxin, glucose, and naloxone (an opiate antagonist); glucose and naloxone; or glucose alone.
300 2952536 The elevation of plasma Met-enkephalin and beta-endorphin preceded the onset of hyperinsulinism, but the elevation of plasma Leu-enkephalin did not.
301 2952536 To determine the role of endogenous opiates in endotoxin-induced glucose-stimulated hyperinsulinism, plasma beta-endorphin, Met-enkephalin, Leu-enkephalin, insulin, and glucose concentrations were measured for 6 h in fasted, anesthetized dogs given LD70 of E. coli endotoxin; endotoxin and glucose; endotoxin, glucose, and naloxone (an opiate antagonist); glucose and naloxone; or glucose alone.
302 2952536 The elevation of plasma Met-enkephalin and beta-endorphin preceded the onset of hyperinsulinism, but the elevation of plasma Leu-enkephalin did not.
303 2952663 Hyperglycemia and obesity as determinants of glucose, insulin, and glucagon responses to beta-endorphin in human diabetes mellitus.
304 2952663 The effect of human beta-endorphin on plasma glucose, insulin, and glucagon concentrations was studied in patients with noninsulin-dependent diabetes mellitus and in normal subjects.
305 2952663 In obese subjects, there was an immediate marked increase in both plasma insulin and glucagon concentrations during the beta-endorphin infusion, but the plasma glucose response was lower than that of lean subjects.
306 2952663 In lean diabetic patients, beta-endorphin produced significant simultaneous increments in both insulin and glucagon concentrations and significantly decreased plasma glucose levels.
307 2952663 There was a significant correlation (r = 0.61; P less than 0.01) between fasting plasma glucose levels and the integrated insulin area in response to beta-endorphin.
308 2952663 The infusion of a lower dose of beta-endorphin (0.05 mg/h) in diabetic patients produced similar increments in both insulin and glucagon levels and also decreased plasma glucose concentration.
309 2952663 Hyperglycemia and obesity as determinants of glucose, insulin, and glucagon responses to beta-endorphin in human diabetes mellitus.
310 2952663 The effect of human beta-endorphin on plasma glucose, insulin, and glucagon concentrations was studied in patients with noninsulin-dependent diabetes mellitus and in normal subjects.
311 2952663 In obese subjects, there was an immediate marked increase in both plasma insulin and glucagon concentrations during the beta-endorphin infusion, but the plasma glucose response was lower than that of lean subjects.
312 2952663 In lean diabetic patients, beta-endorphin produced significant simultaneous increments in both insulin and glucagon concentrations and significantly decreased plasma glucose levels.
313 2952663 There was a significant correlation (r = 0.61; P less than 0.01) between fasting plasma glucose levels and the integrated insulin area in response to beta-endorphin.
314 2952663 The infusion of a lower dose of beta-endorphin (0.05 mg/h) in diabetic patients produced similar increments in both insulin and glucagon levels and also decreased plasma glucose concentration.
315 2952663 Hyperglycemia and obesity as determinants of glucose, insulin, and glucagon responses to beta-endorphin in human diabetes mellitus.
316 2952663 The effect of human beta-endorphin on plasma glucose, insulin, and glucagon concentrations was studied in patients with noninsulin-dependent diabetes mellitus and in normal subjects.
317 2952663 In obese subjects, there was an immediate marked increase in both plasma insulin and glucagon concentrations during the beta-endorphin infusion, but the plasma glucose response was lower than that of lean subjects.
318 2952663 In lean diabetic patients, beta-endorphin produced significant simultaneous increments in both insulin and glucagon concentrations and significantly decreased plasma glucose levels.
319 2952663 There was a significant correlation (r = 0.61; P less than 0.01) between fasting plasma glucose levels and the integrated insulin area in response to beta-endorphin.
320 2952663 The infusion of a lower dose of beta-endorphin (0.05 mg/h) in diabetic patients produced similar increments in both insulin and glucagon levels and also decreased plasma glucose concentration.
321 2952663 Hyperglycemia and obesity as determinants of glucose, insulin, and glucagon responses to beta-endorphin in human diabetes mellitus.
322 2952663 The effect of human beta-endorphin on plasma glucose, insulin, and glucagon concentrations was studied in patients with noninsulin-dependent diabetes mellitus and in normal subjects.
323 2952663 In obese subjects, there was an immediate marked increase in both plasma insulin and glucagon concentrations during the beta-endorphin infusion, but the plasma glucose response was lower than that of lean subjects.
324 2952663 In lean diabetic patients, beta-endorphin produced significant simultaneous increments in both insulin and glucagon concentrations and significantly decreased plasma glucose levels.
325 2952663 There was a significant correlation (r = 0.61; P less than 0.01) between fasting plasma glucose levels and the integrated insulin area in response to beta-endorphin.
326 2952663 The infusion of a lower dose of beta-endorphin (0.05 mg/h) in diabetic patients produced similar increments in both insulin and glucagon levels and also decreased plasma glucose concentration.
327 2952663 Hyperglycemia and obesity as determinants of glucose, insulin, and glucagon responses to beta-endorphin in human diabetes mellitus.
328 2952663 The effect of human beta-endorphin on plasma glucose, insulin, and glucagon concentrations was studied in patients with noninsulin-dependent diabetes mellitus and in normal subjects.
329 2952663 In obese subjects, there was an immediate marked increase in both plasma insulin and glucagon concentrations during the beta-endorphin infusion, but the plasma glucose response was lower than that of lean subjects.
330 2952663 In lean diabetic patients, beta-endorphin produced significant simultaneous increments in both insulin and glucagon concentrations and significantly decreased plasma glucose levels.
331 2952663 There was a significant correlation (r = 0.61; P less than 0.01) between fasting plasma glucose levels and the integrated insulin area in response to beta-endorphin.
332 2952663 The infusion of a lower dose of beta-endorphin (0.05 mg/h) in diabetic patients produced similar increments in both insulin and glucagon levels and also decreased plasma glucose concentration.
333 2952663 Hyperglycemia and obesity as determinants of glucose, insulin, and glucagon responses to beta-endorphin in human diabetes mellitus.
334 2952663 The effect of human beta-endorphin on plasma glucose, insulin, and glucagon concentrations was studied in patients with noninsulin-dependent diabetes mellitus and in normal subjects.
335 2952663 In obese subjects, there was an immediate marked increase in both plasma insulin and glucagon concentrations during the beta-endorphin infusion, but the plasma glucose response was lower than that of lean subjects.
336 2952663 In lean diabetic patients, beta-endorphin produced significant simultaneous increments in both insulin and glucagon concentrations and significantly decreased plasma glucose levels.
337 2952663 There was a significant correlation (r = 0.61; P less than 0.01) between fasting plasma glucose levels and the integrated insulin area in response to beta-endorphin.
338 2952663 The infusion of a lower dose of beta-endorphin (0.05 mg/h) in diabetic patients produced similar increments in both insulin and glucagon levels and also decreased plasma glucose concentration.
339 2958980 GH, LH and cortisol responsiveness to combined im injection of TRH (10 micrograms/kg), GnRH (10 micrograms/kg), and ACTH (5 micrograms/kg) was determined in 9 MPA-treated and 9 control bitches at 17 months of treatment (Exp.
340 2962893 In normal dogs, beta endorphin diminished the insulin response to the first epinephrine infusion (p less than 0.02), and abolished this response to the second (p less than 0.05).
341 2962893 Also, beta endorphin failed to inhibit glucagon or insulin secretion in response to epinephrine in the diabetic animals.
342 2962893 In normal dogs, beta endorphin diminished the insulin response to the first epinephrine infusion (p less than 0.02), and abolished this response to the second (p less than 0.05).
343 2962893 Also, beta endorphin failed to inhibit glucagon or insulin secretion in response to epinephrine in the diabetic animals.
344 2970411 Beta-endorphin-induced inhibition and stimulation of insulin secretion in normal humans is glucose dependent.
345 2970411 Acute insulin and C-peptide responses to intravenous pulses of different glucose amounts (0.33 g/kg and 5 g) and arginine (3 g) were significantly reduced by beta-endorphin infusion (P less than .01).
346 2970411 This effect was associated with a significant reduction of the glucose disappearance rates, suggesting that the inhibition of insulin was of biological relevance. beta-Endorphin also inhibited glucose suppression of glucagon levels and augmented the glucagon response to arginine.
347 2970411 After stabilization of plasma glucose levels (350 +/- 34 mg/dl, t = 120 min), beta-endorphin infusion caused an immediate and marked increase in plasma insulin level (peak response 61 +/- 9 microU/ml, P less than .01), which remained elevated even after the discontinuation of opioid infusion.
348 2970411 Moreover, the acute insulin response to a glucose pulse (0.33 g/kg i.v.) given during beta-endorphin infusion during hyperglycemia was significantly higher than the response obtained during euglycemia (171 +/- 32 vs. 41 +/- 7 microU/ml, P less than .01).
349 2970411 Beta-endorphin-induced inhibition and stimulation of insulin secretion in normal humans is glucose dependent.
350 2970411 Acute insulin and C-peptide responses to intravenous pulses of different glucose amounts (0.33 g/kg and 5 g) and arginine (3 g) were significantly reduced by beta-endorphin infusion (P less than .01).
351 2970411 This effect was associated with a significant reduction of the glucose disappearance rates, suggesting that the inhibition of insulin was of biological relevance. beta-Endorphin also inhibited glucose suppression of glucagon levels and augmented the glucagon response to arginine.
352 2970411 After stabilization of plasma glucose levels (350 +/- 34 mg/dl, t = 120 min), beta-endorphin infusion caused an immediate and marked increase in plasma insulin level (peak response 61 +/- 9 microU/ml, P less than .01), which remained elevated even after the discontinuation of opioid infusion.
353 2970411 Moreover, the acute insulin response to a glucose pulse (0.33 g/kg i.v.) given during beta-endorphin infusion during hyperglycemia was significantly higher than the response obtained during euglycemia (171 +/- 32 vs. 41 +/- 7 microU/ml, P less than .01).
354 2970411 Beta-endorphin-induced inhibition and stimulation of insulin secretion in normal humans is glucose dependent.
355 2970411 Acute insulin and C-peptide responses to intravenous pulses of different glucose amounts (0.33 g/kg and 5 g) and arginine (3 g) were significantly reduced by beta-endorphin infusion (P less than .01).
356 2970411 This effect was associated with a significant reduction of the glucose disappearance rates, suggesting that the inhibition of insulin was of biological relevance. beta-Endorphin also inhibited glucose suppression of glucagon levels and augmented the glucagon response to arginine.
357 2970411 After stabilization of plasma glucose levels (350 +/- 34 mg/dl, t = 120 min), beta-endorphin infusion caused an immediate and marked increase in plasma insulin level (peak response 61 +/- 9 microU/ml, P less than .01), which remained elevated even after the discontinuation of opioid infusion.
358 2970411 Moreover, the acute insulin response to a glucose pulse (0.33 g/kg i.v.) given during beta-endorphin infusion during hyperglycemia was significantly higher than the response obtained during euglycemia (171 +/- 32 vs. 41 +/- 7 microU/ml, P less than .01).
359 2970411 Beta-endorphin-induced inhibition and stimulation of insulin secretion in normal humans is glucose dependent.
360 2970411 Acute insulin and C-peptide responses to intravenous pulses of different glucose amounts (0.33 g/kg and 5 g) and arginine (3 g) were significantly reduced by beta-endorphin infusion (P less than .01).
361 2970411 This effect was associated with a significant reduction of the glucose disappearance rates, suggesting that the inhibition of insulin was of biological relevance. beta-Endorphin also inhibited glucose suppression of glucagon levels and augmented the glucagon response to arginine.
362 2970411 After stabilization of plasma glucose levels (350 +/- 34 mg/dl, t = 120 min), beta-endorphin infusion caused an immediate and marked increase in plasma insulin level (peak response 61 +/- 9 microU/ml, P less than .01), which remained elevated even after the discontinuation of opioid infusion.
363 2970411 Moreover, the acute insulin response to a glucose pulse (0.33 g/kg i.v.) given during beta-endorphin infusion during hyperglycemia was significantly higher than the response obtained during euglycemia (171 +/- 32 vs. 41 +/- 7 microU/ml, P less than .01).
364 2970411 Beta-endorphin-induced inhibition and stimulation of insulin secretion in normal humans is glucose dependent.
365 2970411 Acute insulin and C-peptide responses to intravenous pulses of different glucose amounts (0.33 g/kg and 5 g) and arginine (3 g) were significantly reduced by beta-endorphin infusion (P less than .01).
366 2970411 This effect was associated with a significant reduction of the glucose disappearance rates, suggesting that the inhibition of insulin was of biological relevance. beta-Endorphin also inhibited glucose suppression of glucagon levels and augmented the glucagon response to arginine.
367 2970411 After stabilization of plasma glucose levels (350 +/- 34 mg/dl, t = 120 min), beta-endorphin infusion caused an immediate and marked increase in plasma insulin level (peak response 61 +/- 9 microU/ml, P less than .01), which remained elevated even after the discontinuation of opioid infusion.
368 2970411 Moreover, the acute insulin response to a glucose pulse (0.33 g/kg i.v.) given during beta-endorphin infusion during hyperglycemia was significantly higher than the response obtained during euglycemia (171 +/- 32 vs. 41 +/- 7 microU/ml, P less than .01).
369 2973334 [Behavior of beta-endorphin, GH, cortisol and glucagon during insulin hypoglycemia in type II diabetes].
370 2982980 To assess in detail the adrenal function in this disorder, the responses of plasma aldosterone (PA) and its precursor steroids to angiotensin II (AII) infusion and adrenocorticotropic hormone (ACTH) injection were studied in seven patients with asymptomatic normoreninemic hypoaldosteronism (ANH) and 11 age-matched normal subjects.
371 2986724 The inhibitory effect of insulin was also observed in the release of S-100 protein induced by isoproterenol or adrenocorticotropin (ACTH), but not in the release induced by a high concentration (5 mM) of dibutyryl cyclic AMP.
372 2986724 The S-100 protein release induced by catecholamine was significantly decreased (to about 50%) in the fat pads obtained from insulin-injected rats.
373 2986724 These results suggest that the S-100 protein content in adipocytes is regulated by insulin as well as the lipolytic hormones.
374 2991796 Insulin therapy via minipump for 2 weeks did not alter this finding of lowered beta-endorphin concentrations in diabetic animals, despite normalization of blood glucose levels and body weight gain.
375 2998913 B-endorphin diminished the insulin and glucagon responses during the first epinephrine infusion and abolished them during the second, but did not alter the FFA, ACTH, or cortisol responses to epinephrine.
376 3000117 Effect of aging on growth hormone, ACTH and cortisol response to insulin-induced hypoglycemia in type I diabetes.
377 3000117 ACTH and cortisol responses to insulin were slightly decreased in the older diabetics.
378 3000117 Effect of aging on growth hormone, ACTH and cortisol response to insulin-induced hypoglycemia in type I diabetes.
379 3000117 ACTH and cortisol responses to insulin were slightly decreased in the older diabetics.
380 3000733 Effects of angiotensin II, adrenocorticotropin, and potassium on aldosterone production in adrenal zona glomerulosa cells from streptozotocin-induced diabetic rats.
381 3000733 To test the nature of the aldosterone deficiency, we investigated the responses of aldosterone production to angiotensin II (AII), ACTH, and potassium in adrenal zona glomerulosa cells from diabetic rats at 6 weeks after an injection of streptozotocin compared with those in the cells from control rats.
382 3000733 Effects of angiotensin II, adrenocorticotropin, and potassium on aldosterone production in adrenal zona glomerulosa cells from streptozotocin-induced diabetic rats.
383 3000733 To test the nature of the aldosterone deficiency, we investigated the responses of aldosterone production to angiotensin II (AII), ACTH, and potassium in adrenal zona glomerulosa cells from diabetic rats at 6 weeks after an injection of streptozotocin compared with those in the cells from control rats.
384 3004244 Tumor cells were focally immunoreactive for insulin, glucagon, and somatostatin and diffusely immunoreactive for alpha 1-antitrypsin as assayed by the avidin--biotin technique.
385 3004244 The tumor was immunonegative for human chorionic gonadotropin, gastrin, adrenocorticotropic hormone, and serotonin.
386 3005748 [Interaction of adrenocorticotropic hormone, cortisol and insulin during emotional tension among ischemic heart disease patients].
387 3005748 Blood levels of the adenocorticotrophic hormone (ACTH), cortisol and insulin were measured in normal subjects and patients with different forms of coronary heart disease (CHD), aged 35 to 60 years and showing no signs of diabetes mellitus, obesity and arterial hypertension, under simulated emotional stress.
388 3005748 The majority of the patients, particularly those with unfavorable course of the CHD, showed stress-induced disturbances of hormonal control due to depressed insulin levels in the presence of an insignificant ACTH increment and high cortisolemia.
389 3005748 [Interaction of adrenocorticotropic hormone, cortisol and insulin during emotional tension among ischemic heart disease patients].
390 3005748 Blood levels of the adenocorticotrophic hormone (ACTH), cortisol and insulin were measured in normal subjects and patients with different forms of coronary heart disease (CHD), aged 35 to 60 years and showing no signs of diabetes mellitus, obesity and arterial hypertension, under simulated emotional stress.
391 3005748 The majority of the patients, particularly those with unfavorable course of the CHD, showed stress-induced disturbances of hormonal control due to depressed insulin levels in the presence of an insignificant ACTH increment and high cortisolemia.
392 3005748 [Interaction of adrenocorticotropic hormone, cortisol and insulin during emotional tension among ischemic heart disease patients].
393 3005748 Blood levels of the adenocorticotrophic hormone (ACTH), cortisol and insulin were measured in normal subjects and patients with different forms of coronary heart disease (CHD), aged 35 to 60 years and showing no signs of diabetes mellitus, obesity and arterial hypertension, under simulated emotional stress.
394 3005748 The majority of the patients, particularly those with unfavorable course of the CHD, showed stress-induced disturbances of hormonal control due to depressed insulin levels in the presence of an insignificant ACTH increment and high cortisolemia.
395 3011344 Heterogeneity of anterior pituitary cell antibodies detected in insulin-dependent diabetes mellitus and adrenocorticotropic hormone deficiency.
396 3011344 Results in 24 cases out of 81 insulin-dependent diabetic patients and 10 cases of 21 adrenocorticotropic hormone (ACTH) deficient patients were positive for autoantibodies to anterior pituitary cell cytoplasm.
397 3011344 Populations of insulin-dependent diabetes mellitus (IDDM) are almost equal in males and females.
398 3011344 These results suggest that heterogenous PitCA are involved in the sera of those patients with IDDM and ACTH deficiency.
399 3011344 Heterogeneity of anterior pituitary cell antibodies detected in insulin-dependent diabetes mellitus and adrenocorticotropic hormone deficiency.
400 3011344 Results in 24 cases out of 81 insulin-dependent diabetic patients and 10 cases of 21 adrenocorticotropic hormone (ACTH) deficient patients were positive for autoantibodies to anterior pituitary cell cytoplasm.
401 3011344 Populations of insulin-dependent diabetes mellitus (IDDM) are almost equal in males and females.
402 3011344 These results suggest that heterogenous PitCA are involved in the sera of those patients with IDDM and ACTH deficiency.
403 3011344 Heterogeneity of anterior pituitary cell antibodies detected in insulin-dependent diabetes mellitus and adrenocorticotropic hormone deficiency.
404 3011344 Results in 24 cases out of 81 insulin-dependent diabetic patients and 10 cases of 21 adrenocorticotropic hormone (ACTH) deficient patients were positive for autoantibodies to anterior pituitary cell cytoplasm.
405 3011344 Populations of insulin-dependent diabetes mellitus (IDDM) are almost equal in males and females.
406 3011344 These results suggest that heterogenous PitCA are involved in the sera of those patients with IDDM and ACTH deficiency.
407 3032819 In the present investigations, these animals have been studied in relation to the influence of low- and high-energy diets on body weight, plasma insulin and blood glucose levels, and on insulin secretion from the perfused pancreas and the secretion of corticotropin-like intermediate lobe peptide (CLIP, ACTH18-39) and the insulin secretagogue beta-cell-tropin (beta-CT, ACTH22-39) from the pituitary neurointermediate lobe.
408 3034474 Detection of antibodies to anterior pituitary cell surface membrane with insulin dependent diabetes mellitus and adrenocorticotropic hormone deficiency.
409 3034474 Autoantibodies for anterior pituitary cell surface membrane (PitCSA) were assayed by immunofluorescence method using GH3 cells (rat GH and prolactin secreting cell) and AtT-20 cells (mouse adrenocorticotropic hormone secreting cell) as antigens.
410 3034474 These results suggested that PitCSA and ICSA have independent features, though both are closely related, and that PitCSA was one of the significant immunological markers often observed in the sera of the patients with insulin dependent diabetes mellitus (IDDM) and ACTH deficiency.
411 3034474 Detection of antibodies to anterior pituitary cell surface membrane with insulin dependent diabetes mellitus and adrenocorticotropic hormone deficiency.
412 3034474 Autoantibodies for anterior pituitary cell surface membrane (PitCSA) were assayed by immunofluorescence method using GH3 cells (rat GH and prolactin secreting cell) and AtT-20 cells (mouse adrenocorticotropic hormone secreting cell) as antigens.
413 3034474 These results suggested that PitCSA and ICSA have independent features, though both are closely related, and that PitCSA was one of the significant immunological markers often observed in the sera of the patients with insulin dependent diabetes mellitus (IDDM) and ACTH deficiency.
414 3034474 Detection of antibodies to anterior pituitary cell surface membrane with insulin dependent diabetes mellitus and adrenocorticotropic hormone deficiency.
415 3034474 Autoantibodies for anterior pituitary cell surface membrane (PitCSA) were assayed by immunofluorescence method using GH3 cells (rat GH and prolactin secreting cell) and AtT-20 cells (mouse adrenocorticotropic hormone secreting cell) as antigens.
416 3034474 These results suggested that PitCSA and ICSA have independent features, though both are closely related, and that PitCSA was one of the significant immunological markers often observed in the sera of the patients with insulin dependent diabetes mellitus (IDDM) and ACTH deficiency.
417 3034756 In the course of one-day normalization of glycemia by means of Biostator the TSH and prolactin rhythm was maintained, whereas the circadian rhythm of growth hormone and ACTH levels appeared with acrophase at 18.47 and 19.59 hour, respectively.
418 3309934 A study was made of the levels of glucose, IRI, STH, ACTH and cortisol in the blood serum (plasma) of 39 patients with diabetes mellitus prior to and after physical exercise testing. 25 patients performed physical exercises on an empty stomach in the morning (8-9 a.m.) 14 patients in the daytime (4-5 p.m.).
419 3501746 Impaired pancreatic polypeptide response to hCRF in type 2 diabetics: restoration to normal by an opioid antagonist.
420 3501746 Administration of synthetic human corticotropin-releasing factor (hCRF, 2 micrograms/kg body weight) to 6 normal men produced a significant rise in plasma pancreatic polypeptide (PP) levels.
421 3510138 Treatment with trypsin and carboxy-peptidase-B of high-molecular-weight peptides extracted from pancreas or islets resulted in release of additional met-enkephalin immunoreactivity, which was 39-fold enriched in islets compared with pancreas (5.90 +/- 0.58 and 0.153 +/- 0.032 pmol/mg protein, respectively).
422 3514650 A pituitary tumor was diagnosed in a prepubertal 13-yr-old girl, who had elevated plasma LH (58 mIU/ml) and PRL (93 ng/ml) levels; decreased GH, ACTH, and FSH secretion; and diabetes insipidus.
423 3547015 The administration of the long-acting met-enkephalin analogue (FK 33-824, Sandoz; Basel Switzerland) inhibits insulin secretion induced by glucose (oral and intravenous) and nonglucose (arginine and breakfast) secretagogues in both normal subjects and in patients with noninsulin-dependent diabetes mellitus.
424 3877029 We describe a male infant with septo-optic dysplasia in whom extensive endocrine evaluation revealed central diabetes insipidus, hypothalamic hypothyroidism and combined (hypothalamic-pituitary) hypoadrenalism, along with normal pituitary growth hormone reserve.
425 3877029 This is the first reported case of a patient with septo-optic dysplasia who underwent corticotropin-releasing factor and growth hormone-releasing hormone stimulation.
426 3936737 Met-enkephalin, catecholamines and prostaglandin E (PGE) have all been reported to inhibit the acute insulin response to glucose in normal humans.
427 3963792 Hormones such as ACTH, STH, hydrocortisone, immunoreactive insulin and S-peptide, lipid metabolism and glycosylated hemoglobin were investigated in the time course of the treatment.
428 4043329 Antidiuretic hormone involvement in the release of alpha-melanocyte-stimulating hormone by hyperosmotic stimuli.
429 4043329 No such rise in alpha-MSH followed hypertonic saline administration in the Brattleboro (hereditary diabetes insipidus) animal (compared to isotonic saline injected controls).
430 4043329 Antidiuretic hormone involvement in the release of alpha-melanocyte-stimulating hormone by hyperosmotic stimuli.
431 4043329 No such rise in alpha-MSH followed hypertonic saline administration in the Brattleboro (hereditary diabetes insipidus) animal (compared to isotonic saline injected controls).
432 4374289 Luteinizing hormone, follicle-stimulating hormone, ACTH, and prolactin were not affected.
433 6094152 Aldosterone responses to angiotensin II, adrenocorticotropin, and potassium in chronic experimental diabetes mellitus in rats.
434 6094152 To investigate alterations in aldosterone secretion in diabetes mellitus, the effects of angiotensin II, ACTH, and potassium on aldosterone secretion were examined in conscious unrestrained streptozotocin-induced diabetic rats (60 mg/kg, 12 weeks before study).
435 6094152 In chronic experimental diabetic rats where PRA, plasma aldosterone concentration, and urinary excretion of prostaglandin E2 were significantly decreased, a significant attenuated response of aldosterone secretion was demonstrated after infusion of angiotensin II, ACTH, or potassium.
436 6094152 Aldosterone responses to angiotensin II, adrenocorticotropin, and potassium in chronic experimental diabetes mellitus in rats.
437 6094152 To investigate alterations in aldosterone secretion in diabetes mellitus, the effects of angiotensin II, ACTH, and potassium on aldosterone secretion were examined in conscious unrestrained streptozotocin-induced diabetic rats (60 mg/kg, 12 weeks before study).
438 6094152 In chronic experimental diabetic rats where PRA, plasma aldosterone concentration, and urinary excretion of prostaglandin E2 were significantly decreased, a significant attenuated response of aldosterone secretion was demonstrated after infusion of angiotensin II, ACTH, or potassium.
439 6094152 Aldosterone responses to angiotensin II, adrenocorticotropin, and potassium in chronic experimental diabetes mellitus in rats.
440 6094152 To investigate alterations in aldosterone secretion in diabetes mellitus, the effects of angiotensin II, ACTH, and potassium on aldosterone secretion were examined in conscious unrestrained streptozotocin-induced diabetic rats (60 mg/kg, 12 weeks before study).
441 6094152 In chronic experimental diabetic rats where PRA, plasma aldosterone concentration, and urinary excretion of prostaglandin E2 were significantly decreased, a significant attenuated response of aldosterone secretion was demonstrated after infusion of angiotensin II, ACTH, or potassium.
442 6243555 No significant changes in plasma ACTH were observed in rats with coagulated hypophysial portal vessels or in Brattleboro rats with congenital diabetes insipidus.
443 6252496 Oxytocin: major corticotropin-releasing factor secreted from diabetes insipidus rat posterior pituitary in vitro.
444 6252496 In diabetes insipidus (DI) rats, electrical stimulation of the posterior pituitary lobes in vitro promotes the release of corticotropin-releasing factor (CRF).
445 6252496 Oxytocin: major corticotropin-releasing factor secreted from diabetes insipidus rat posterior pituitary in vitro.
446 6252496 In diabetes insipidus (DI) rats, electrical stimulation of the posterior pituitary lobes in vitro promotes the release of corticotropin-releasing factor (CRF).
447 6257005 Deficiencies of corticotrophin (ACTH), growth hormone, and prolactin were documented in a woman with diabetes mellitus and Sheehan's syndrome.
448 6257005 The patient's ACTH deficit appeared to be secondary to a hypothalamic abnormality since on two occasions the patient had a marked plasma ACTH response to vasopressin but not to insulin induced hypoglycaemia.
449 6257005 Deficiencies of corticotrophin (ACTH), growth hormone, and prolactin were documented in a woman with diabetes mellitus and Sheehan's syndrome.
450 6257005 The patient's ACTH deficit appeared to be secondary to a hypothalamic abnormality since on two occasions the patient had a marked plasma ACTH response to vasopressin but not to insulin induced hypoglycaemia.
451 6258694 1 beta-Endorphin (2 micrograms injected into the lateral ventricles) produced a significant decrease in the urine outflow and in the excretion of Na+ and K+ in Brattleboro rats, animals suffering from severe diabetes insipidus.
452 6269688 To investigate this possibility the plasma met-enkephalin and beta-endorphin responses to sherry with and without chlorpropamide were studied in six patients with non-insulin dependent diabetes and in six normal subjects.
453 6277121 ACTH values at 08(00) and 18(00), hPRL and TSh secretion in response to 200 microgram TRH i.v., and GH secretion in response to 500 mg oral L-dopa were evaluated.
454 6281608 Baseline endocrine studies (serum triglycerides: 2600 mg/dl) demonstrated hyperprolactinemia (serum prolactin 51 ng/ml), increased ACTH levels, absence of suppression of ACTH to a high dose of dexamethasone which suppressed serum cortisol normally and, hyperresponsiveness of TSH to stimulation with TRH.
455 6281608 Repeat endocrine function studies (serum triglycerides: 700 mg/dl) showed a further rise in serum prolactin (greater than 160 ng/ml), persistence of abnormal ACTH secretion and normalization of TSH responsiveness.
456 6281608 Baseline endocrine studies (serum triglycerides: 2600 mg/dl) demonstrated hyperprolactinemia (serum prolactin 51 ng/ml), increased ACTH levels, absence of suppression of ACTH to a high dose of dexamethasone which suppressed serum cortisol normally and, hyperresponsiveness of TSH to stimulation with TRH.
457 6281608 Repeat endocrine function studies (serum triglycerides: 700 mg/dl) showed a further rise in serum prolactin (greater than 160 ng/ml), persistence of abnormal ACTH secretion and normalization of TSH responsiveness.
458 6288750 Corticotropin-releasing factor (CRF) was administered as an iv bolus to two young women with mild Cushing's disease shortly before and one week after successful transsphenoidal microadenomectomy.
459 6288750 The dose of CRF (1 microgram/kg body weight) had previously been shown to stimulate increased plasma ACTH and cortisol in normal subjects.
460 6288750 After surgery, at a time when plasma cortisol was maintained at similar levels with exogenous hydrocortisone, there was no plasma ACTH or LH, TSH and prolactin increased after administration of LRH and TRH, and GH increased in response to insulin-induced hypoglycemia.
461 6288750 CRF-induced increments in ACTH and cortisol were much less, but the time course was similar and peak levels attained were still higher than those in normal subjects.
462 6288750 Corticotropin-releasing factor (CRF) was administered as an iv bolus to two young women with mild Cushing's disease shortly before and one week after successful transsphenoidal microadenomectomy.
463 6288750 The dose of CRF (1 microgram/kg body weight) had previously been shown to stimulate increased plasma ACTH and cortisol in normal subjects.
464 6288750 After surgery, at a time when plasma cortisol was maintained at similar levels with exogenous hydrocortisone, there was no plasma ACTH or LH, TSH and prolactin increased after administration of LRH and TRH, and GH increased in response to insulin-induced hypoglycemia.
465 6288750 CRF-induced increments in ACTH and cortisol were much less, but the time course was similar and peak levels attained were still higher than those in normal subjects.
466 6288750 Corticotropin-releasing factor (CRF) was administered as an iv bolus to two young women with mild Cushing's disease shortly before and one week after successful transsphenoidal microadenomectomy.
467 6288750 The dose of CRF (1 microgram/kg body weight) had previously been shown to stimulate increased plasma ACTH and cortisol in normal subjects.
468 6288750 After surgery, at a time when plasma cortisol was maintained at similar levels with exogenous hydrocortisone, there was no plasma ACTH or LH, TSH and prolactin increased after administration of LRH and TRH, and GH increased in response to insulin-induced hypoglycemia.
469 6288750 CRF-induced increments in ACTH and cortisol were much less, but the time course was similar and peak levels attained were still higher than those in normal subjects.
470 6288750 Corticotropin-releasing factor (CRF) was administered as an iv bolus to two young women with mild Cushing's disease shortly before and one week after successful transsphenoidal microadenomectomy.
471 6288750 The dose of CRF (1 microgram/kg body weight) had previously been shown to stimulate increased plasma ACTH and cortisol in normal subjects.
472 6288750 After surgery, at a time when plasma cortisol was maintained at similar levels with exogenous hydrocortisone, there was no plasma ACTH or LH, TSH and prolactin increased after administration of LRH and TRH, and GH increased in response to insulin-induced hypoglycemia.
473 6288750 CRF-induced increments in ACTH and cortisol were much less, but the time course was similar and peak levels attained were still higher than those in normal subjects.
474 6293899 Responsiveness of plasma 18-hydroxycorticosterone and aldosterone to angiotensin II or corticotropin in nonazotemic diabetes mellitus.
475 6295233 Molecular forms and anterior pituitary content of ACTH, beta-lipotropin, and beta-endorphin in diabetes insipidus di/di (Brattleboro) rats.
476 6296674 To evaluate this possibility, we infused synthetic human beta-endorphin intravenously in healthy volunteers and in insulin-dependent diabetic patients.
477 6296674 In nondiabetic subjects, beta-endorphin also increased plasma insulin concentrations.
478 6296674 Glucose, glucagon, and insulin responses to beta-endorphin could not be blocked by intravenous naloxone.
479 6296674 To evaluate this possibility, we infused synthetic human beta-endorphin intravenously in healthy volunteers and in insulin-dependent diabetic patients.
480 6296674 In nondiabetic subjects, beta-endorphin also increased plasma insulin concentrations.
481 6296674 Glucose, glucagon, and insulin responses to beta-endorphin could not be blocked by intravenous naloxone.
482 6296674 To evaluate this possibility, we infused synthetic human beta-endorphin intravenously in healthy volunteers and in insulin-dependent diabetic patients.
483 6296674 In nondiabetic subjects, beta-endorphin also increased plasma insulin concentrations.
484 6296674 Glucose, glucagon, and insulin responses to beta-endorphin could not be blocked by intravenous naloxone.
485 6299123 To study the role of the paraventricular nucleus and of neurohypophysial hormones in the control of ACTH secretion, the paraventricular nuclei (PV) of Brattleboro diabetes insipidus rats (DI) were lesioned (L) with a knife; sham-lesioned DI (S) served as controls.
486 6299123 The median eminence (ME) and neural lobe (NL) were homogenized in 50 microliters of 0.1 N HCl and frozen pending bioassay of corticotropin-releasing factor (CRF).
487 6299123 To study the role of the paraventricular nucleus and of neurohypophysial hormones in the control of ACTH secretion, the paraventricular nuclei (PV) of Brattleboro diabetes insipidus rats (DI) were lesioned (L) with a knife; sham-lesioned DI (S) served as controls.
488 6299123 The median eminence (ME) and neural lobe (NL) were homogenized in 50 microliters of 0.1 N HCl and frozen pending bioassay of corticotropin-releasing factor (CRF).
489 6300594 Diabetic animals were found to have a marked increase in endorphin equivalents, measured by opiate receptor binding assay, in the NIL whereas no change was observed in beta endorphin-like immunoreactivity (beta ELI) or ACTH measured by RIA.
490 6318561 In the pregnant patients with fetuses affected by Cooley's disease (second trimester) and in those with edema-proteinuria-hypertension (EPH) gestosis (third trimester), amniotic fluid levels of beta-endorphin, beta-lipotropin, and ACTH were in the same range as those in healthy pregnant women.
491 6319955 Beta-endorphin stimulates the secretion of insulin and glucagon in diabetes mellitus.
492 6319955 Administration of human beta-endorphin (2.5 mg IV bolus) to three subjects with non-insulin-dependent diabetes mellitus (type II) induced prompt and simultaneous increments in the plasma concentrations of insulin and glucagon lasting up to 90 minutes.
493 6319955 Beta-endorphin stimulates the secretion of insulin and glucagon in diabetes mellitus.
494 6319955 Administration of human beta-endorphin (2.5 mg IV bolus) to three subjects with non-insulin-dependent diabetes mellitus (type II) induced prompt and simultaneous increments in the plasma concentrations of insulin and glucagon lasting up to 90 minutes.
495 6488662 One of the patients demonstrated adrenocorticotropic hormone deficiency, and one had diabetes insipidus.
496 6499230 The response of plasma immunoreactive met-enkephalin (IR-met-enkephalin) to ethanol (8 g by mouth) after chlorpropamide (250 mg daily for 14 d) was studied in three groups of non-insulin dependent diabetics (a) six diabetics who showed chlorpropamide alcohol flush (CPAF) and in whom the reaction could be blocked by indomethacin, (b) five diabetics who showed CPAF but in whom the flush could not be blocked by indomethacin and (c) five diabetics who did not show CPAF.
497 6534872 Release of alpha-MSH from the in vitro superfused neuro-intermediate lobe of the pituitary of the rat by antidiuretic hormone.
498 6534872 The effect of antidiuretic hormone (ADH) on the release of immunoreactive alpha-melanocyte stimulating hormone (alpha-MSH) from the superfused neurointermediate lobe of the pituitary of the normal Wistar and Brattleboro (diabetes insipidus) rat was studied in vitro.
499 6534872 Release of alpha-MSH from the in vitro superfused neuro-intermediate lobe of the pituitary of the rat by antidiuretic hormone.
500 6534872 The effect of antidiuretic hormone (ADH) on the release of immunoreactive alpha-melanocyte stimulating hormone (alpha-MSH) from the superfused neurointermediate lobe of the pituitary of the normal Wistar and Brattleboro (diabetes insipidus) rat was studied in vitro.
501 6672071 He was found to have marked hypothalamic-pituitary dysfunction including deficiencies of growth hormone, thyrotropin, adrenocorticotropic hormone and gonadotropins, diabetes insipidus, adipsia with essential hypernatremia and poikilothermia.
502 6874170 In addition to insulin deficiency and impaired catecholamine secretion, diabetics showed high values of growth hormone, ACTH, and cortisol.
503 6983849 Demonstration of corticotropin-releasing factor (CRF) activity in the neurohypophysis of Brattleboro rats.
504 7007886 We have compared the distribution of oxytocin, vasopressin and enkephalin immunoreactivity (IR) in the neurohypophysis of the rat, and report here that Met-enkephalin-IR is invariably associated with nerve terminals that contain oxytocin-IR whereas the terminals that contain vasopressin-IR often, but not invariably, are Leu-enkephalin immunoreactive.
505 7418926 ["Hormone receptor diseases" in Japan: A nation-wide survey for testicular feminization syndrome, pseudohypoparathyroidism, nephrogenic diabetes insipidus, Bartter's syndrome and congenital adrenocortical unresponsiveness to ACTH (author's transl)].
506 7418926 The approximate numbers of patients in Japan estimated from these surveys are the following: testicular feminization syndrome (TFS), 390; pseudohypoparathyroidism (PHP), 220, nephrogenic diabetes insipidus (NDI), 280; Bartter's syndrome, 90; congenital adrenocortical unresponsiveness to ACTH (CAUA), 18.
507 7418926 ["Hormone receptor diseases" in Japan: A nation-wide survey for testicular feminization syndrome, pseudohypoparathyroidism, nephrogenic diabetes insipidus, Bartter's syndrome and congenital adrenocortical unresponsiveness to ACTH (author's transl)].
508 7418926 The approximate numbers of patients in Japan estimated from these surveys are the following: testicular feminization syndrome (TFS), 390; pseudohypoparathyroidism (PHP), 220, nephrogenic diabetes insipidus (NDI), 280; Bartter's syndrome, 90; congenital adrenocortical unresponsiveness to ACTH (CAUA), 18.
509 7479313 NPY synthesis in the ARC is thought to be regulated by several factors, notably insulin, which may exert an inhibitory action.
510 7479313 The effects of NPY injected into the PVN and other sites include hyperphagia, reduced energy expenditure and enhanced weight gain, insulin secretion, and stimulation of corticotropin and corticosterone release.
511 7479313 The ARC-PVN projection appears to be overactive in insulin-deficient diabetic rats, and could contribute to the compensatory hyperphagia and reduced energy expenditure, and pituitary dysfunction found in these animals; overactivity of these NPY neurons may be due to reduction of insulin's normal inhibitory effect.
512 7479313 The ARC-PVN projection is also stimulated in rat models of obesity +/- non-insulin diabetes, possibly because the hypothalamus is resistant to inhibition by insulin; in these animals, enhanced activity of ARC NPY neurons could cause hyperphagia, reduced energy expenditure, and obesity, and perhaps contribute to hyperinsulinemia and altered pituitary secretion.
513 7494779 Like any other pancreatic islet cell carcinoma, a somatostatinoma may also produce several different hormones such as adrenocorticotropic hormone, calcitonin, vasoactive intestinal polypeptide, pancreatic polypeptide, gastrin, insulin, and glucagon.
514 7494779 We present a patient with somatostatinoma in which an immunocytochemical study of the specimens from pancreas and liver showed a weak positive reaction for gastrin besides a strong positive reaction for somatostatin.
515 7535623 Serum gamma-globulins from patients 1 and 4 attenuated corticotropin releasing hormone-induced ACTH release in monolayer cultured rat anterior pituitary cells.
516 7584524 Blood was drawn prior and up to 180 min after drug administration for determination of GH, adrenocorticotropic hormone (ACTH), prolactin, thyrotropin (TSH), luteinizing hormone (LH), follicle-stimulating hormone (FSH), glucose, clonidine, and moxonidine concentrations.
517 7584534 In the five patients submitted to inferior petrosal sinus sampling, a parallelism between ACTH and PRL concentrations could be observed with a PRL rise, ipsilateral to that of ACTH, ensuing in three patients after administration of corticotropin-releasing hormone.
518 7619655 The following endocrinological diagnostic procedures were carried out: hormonal (RIA) basal profile: FT3, FT4, TSH, PRL, ACTH, FSH, LH, 8.00 a.m. and p.m., blood cortisol, aldo, PRA, DHEA-S, FTe, E2, P, PTH, CT, and calcemia and phosphoremia; provocative tests: TRH, GnRH, etc.; inhibition tests: high dose dexamethasone.
519 7659194 Involvement of oxytocin in histamine- and stress-induced ACTH and prolactin secretion.
520 7659194 In addition, we have recently shown that centrally administered histamine (HA), which is a mediator of stress-induced release of ACTH and prolactin (PRL), stimulates OT secretion.
521 7659194 The aim of the present investigation was to further characterize the HA-induced OT secretion with respect to the type of postsynaptic receptor involved and to investigate the possible role of OT in HA- and stress-induced ACTH and PRL secretion.
522 7659194 We studied (1) the effect of HA, HA agonists and HA antagonists on OT secretion in normal male rats, (2) the secretion of OT in response to HA stimulation and to restraint stress, endotoxin stress [lipopolysaccharide (LPS) administration] and insulin/hypoglycemia stress and compared the OT response to that of arginine vasopressin (AVP), (3) the OT response to restraint stress or HA in normal and AVP-deficient Brattleboro rats (DI) suffering from diabetes insipidus and (4) the effect of inhibiting the oxytocinergic system by immunoneutralization or receptor blockade on HA- and stress-induced ACTH and PRL release in normal as well as in DI rats.
523 7659194 Neither an OT antiserum nor an OT antagonist inhibited the HA- or restraint-stress-induced ACTH or PRL release in normal rats.
524 7659194 In AVP-deficient rats immunoneutralization of OT had no inhibitory effect on the HA- and restraint-stress-induced ACTH and PRL response.
525 7659194 The ACTH and PRL response to restraint stress and the ACTH response to HA was impaired in DI rats compared to their healthy controls.
526 7659194 We conclude (1) that HA stimulates OT secretion via activation of postsynaptic H1 and H2 receptors, and (2) that, in contrast to AVP, OT does not seem to be involved in HA- and restraint-stress-induced ACTH and PRL secretion.
527 7659194 Involvement of oxytocin in histamine- and stress-induced ACTH and prolactin secretion.
528 7659194 In addition, we have recently shown that centrally administered histamine (HA), which is a mediator of stress-induced release of ACTH and prolactin (PRL), stimulates OT secretion.
529 7659194 The aim of the present investigation was to further characterize the HA-induced OT secretion with respect to the type of postsynaptic receptor involved and to investigate the possible role of OT in HA- and stress-induced ACTH and PRL secretion.
530 7659194 We studied (1) the effect of HA, HA agonists and HA antagonists on OT secretion in normal male rats, (2) the secretion of OT in response to HA stimulation and to restraint stress, endotoxin stress [lipopolysaccharide (LPS) administration] and insulin/hypoglycemia stress and compared the OT response to that of arginine vasopressin (AVP), (3) the OT response to restraint stress or HA in normal and AVP-deficient Brattleboro rats (DI) suffering from diabetes insipidus and (4) the effect of inhibiting the oxytocinergic system by immunoneutralization or receptor blockade on HA- and stress-induced ACTH and PRL release in normal as well as in DI rats.
531 7659194 Neither an OT antiserum nor an OT antagonist inhibited the HA- or restraint-stress-induced ACTH or PRL release in normal rats.
532 7659194 In AVP-deficient rats immunoneutralization of OT had no inhibitory effect on the HA- and restraint-stress-induced ACTH and PRL response.
533 7659194 The ACTH and PRL response to restraint stress and the ACTH response to HA was impaired in DI rats compared to their healthy controls.
534 7659194 We conclude (1) that HA stimulates OT secretion via activation of postsynaptic H1 and H2 receptors, and (2) that, in contrast to AVP, OT does not seem to be involved in HA- and restraint-stress-induced ACTH and PRL secretion.
535 7659194 Involvement of oxytocin in histamine- and stress-induced ACTH and prolactin secretion.
536 7659194 In addition, we have recently shown that centrally administered histamine (HA), which is a mediator of stress-induced release of ACTH and prolactin (PRL), stimulates OT secretion.
537 7659194 The aim of the present investigation was to further characterize the HA-induced OT secretion with respect to the type of postsynaptic receptor involved and to investigate the possible role of OT in HA- and stress-induced ACTH and PRL secretion.
538 7659194 We studied (1) the effect of HA, HA agonists and HA antagonists on OT secretion in normal male rats, (2) the secretion of OT in response to HA stimulation and to restraint stress, endotoxin stress [lipopolysaccharide (LPS) administration] and insulin/hypoglycemia stress and compared the OT response to that of arginine vasopressin (AVP), (3) the OT response to restraint stress or HA in normal and AVP-deficient Brattleboro rats (DI) suffering from diabetes insipidus and (4) the effect of inhibiting the oxytocinergic system by immunoneutralization or receptor blockade on HA- and stress-induced ACTH and PRL release in normal as well as in DI rats.
539 7659194 Neither an OT antiserum nor an OT antagonist inhibited the HA- or restraint-stress-induced ACTH or PRL release in normal rats.
540 7659194 In AVP-deficient rats immunoneutralization of OT had no inhibitory effect on the HA- and restraint-stress-induced ACTH and PRL response.
541 7659194 The ACTH and PRL response to restraint stress and the ACTH response to HA was impaired in DI rats compared to their healthy controls.
542 7659194 We conclude (1) that HA stimulates OT secretion via activation of postsynaptic H1 and H2 receptors, and (2) that, in contrast to AVP, OT does not seem to be involved in HA- and restraint-stress-induced ACTH and PRL secretion.
543 7659194 Involvement of oxytocin in histamine- and stress-induced ACTH and prolactin secretion.
544 7659194 In addition, we have recently shown that centrally administered histamine (HA), which is a mediator of stress-induced release of ACTH and prolactin (PRL), stimulates OT secretion.
545 7659194 The aim of the present investigation was to further characterize the HA-induced OT secretion with respect to the type of postsynaptic receptor involved and to investigate the possible role of OT in HA- and stress-induced ACTH and PRL secretion.
546 7659194 We studied (1) the effect of HA, HA agonists and HA antagonists on OT secretion in normal male rats, (2) the secretion of OT in response to HA stimulation and to restraint stress, endotoxin stress [lipopolysaccharide (LPS) administration] and insulin/hypoglycemia stress and compared the OT response to that of arginine vasopressin (AVP), (3) the OT response to restraint stress or HA in normal and AVP-deficient Brattleboro rats (DI) suffering from diabetes insipidus and (4) the effect of inhibiting the oxytocinergic system by immunoneutralization or receptor blockade on HA- and stress-induced ACTH and PRL release in normal as well as in DI rats.
547 7659194 Neither an OT antiserum nor an OT antagonist inhibited the HA- or restraint-stress-induced ACTH or PRL release in normal rats.
548 7659194 In AVP-deficient rats immunoneutralization of OT had no inhibitory effect on the HA- and restraint-stress-induced ACTH and PRL response.
549 7659194 The ACTH and PRL response to restraint stress and the ACTH response to HA was impaired in DI rats compared to their healthy controls.
550 7659194 We conclude (1) that HA stimulates OT secretion via activation of postsynaptic H1 and H2 receptors, and (2) that, in contrast to AVP, OT does not seem to be involved in HA- and restraint-stress-induced ACTH and PRL secretion.
551 7659194 Involvement of oxytocin in histamine- and stress-induced ACTH and prolactin secretion.
552 7659194 In addition, we have recently shown that centrally administered histamine (HA), which is a mediator of stress-induced release of ACTH and prolactin (PRL), stimulates OT secretion.
553 7659194 The aim of the present investigation was to further characterize the HA-induced OT secretion with respect to the type of postsynaptic receptor involved and to investigate the possible role of OT in HA- and stress-induced ACTH and PRL secretion.
554 7659194 We studied (1) the effect of HA, HA agonists and HA antagonists on OT secretion in normal male rats, (2) the secretion of OT in response to HA stimulation and to restraint stress, endotoxin stress [lipopolysaccharide (LPS) administration] and insulin/hypoglycemia stress and compared the OT response to that of arginine vasopressin (AVP), (3) the OT response to restraint stress or HA in normal and AVP-deficient Brattleboro rats (DI) suffering from diabetes insipidus and (4) the effect of inhibiting the oxytocinergic system by immunoneutralization or receptor blockade on HA- and stress-induced ACTH and PRL release in normal as well as in DI rats.
555 7659194 Neither an OT antiserum nor an OT antagonist inhibited the HA- or restraint-stress-induced ACTH or PRL release in normal rats.
556 7659194 In AVP-deficient rats immunoneutralization of OT had no inhibitory effect on the HA- and restraint-stress-induced ACTH and PRL response.
557 7659194 The ACTH and PRL response to restraint stress and the ACTH response to HA was impaired in DI rats compared to their healthy controls.
558 7659194 We conclude (1) that HA stimulates OT secretion via activation of postsynaptic H1 and H2 receptors, and (2) that, in contrast to AVP, OT does not seem to be involved in HA- and restraint-stress-induced ACTH and PRL secretion.
559 7659194 Involvement of oxytocin in histamine- and stress-induced ACTH and prolactin secretion.
560 7659194 In addition, we have recently shown that centrally administered histamine (HA), which is a mediator of stress-induced release of ACTH and prolactin (PRL), stimulates OT secretion.
561 7659194 The aim of the present investigation was to further characterize the HA-induced OT secretion with respect to the type of postsynaptic receptor involved and to investigate the possible role of OT in HA- and stress-induced ACTH and PRL secretion.
562 7659194 We studied (1) the effect of HA, HA agonists and HA antagonists on OT secretion in normal male rats, (2) the secretion of OT in response to HA stimulation and to restraint stress, endotoxin stress [lipopolysaccharide (LPS) administration] and insulin/hypoglycemia stress and compared the OT response to that of arginine vasopressin (AVP), (3) the OT response to restraint stress or HA in normal and AVP-deficient Brattleboro rats (DI) suffering from diabetes insipidus and (4) the effect of inhibiting the oxytocinergic system by immunoneutralization or receptor blockade on HA- and stress-induced ACTH and PRL release in normal as well as in DI rats.
563 7659194 Neither an OT antiserum nor an OT antagonist inhibited the HA- or restraint-stress-induced ACTH or PRL release in normal rats.
564 7659194 In AVP-deficient rats immunoneutralization of OT had no inhibitory effect on the HA- and restraint-stress-induced ACTH and PRL response.
565 7659194 The ACTH and PRL response to restraint stress and the ACTH response to HA was impaired in DI rats compared to their healthy controls.
566 7659194 We conclude (1) that HA stimulates OT secretion via activation of postsynaptic H1 and H2 receptors, and (2) that, in contrast to AVP, OT does not seem to be involved in HA- and restraint-stress-induced ACTH and PRL secretion.
567 7659194 Involvement of oxytocin in histamine- and stress-induced ACTH and prolactin secretion.
568 7659194 In addition, we have recently shown that centrally administered histamine (HA), which is a mediator of stress-induced release of ACTH and prolactin (PRL), stimulates OT secretion.
569 7659194 The aim of the present investigation was to further characterize the HA-induced OT secretion with respect to the type of postsynaptic receptor involved and to investigate the possible role of OT in HA- and stress-induced ACTH and PRL secretion.
570 7659194 We studied (1) the effect of HA, HA agonists and HA antagonists on OT secretion in normal male rats, (2) the secretion of OT in response to HA stimulation and to restraint stress, endotoxin stress [lipopolysaccharide (LPS) administration] and insulin/hypoglycemia stress and compared the OT response to that of arginine vasopressin (AVP), (3) the OT response to restraint stress or HA in normal and AVP-deficient Brattleboro rats (DI) suffering from diabetes insipidus and (4) the effect of inhibiting the oxytocinergic system by immunoneutralization or receptor blockade on HA- and stress-induced ACTH and PRL release in normal as well as in DI rats.
571 7659194 Neither an OT antiserum nor an OT antagonist inhibited the HA- or restraint-stress-induced ACTH or PRL release in normal rats.
572 7659194 In AVP-deficient rats immunoneutralization of OT had no inhibitory effect on the HA- and restraint-stress-induced ACTH and PRL response.
573 7659194 The ACTH and PRL response to restraint stress and the ACTH response to HA was impaired in DI rats compared to their healthy controls.
574 7659194 We conclude (1) that HA stimulates OT secretion via activation of postsynaptic H1 and H2 receptors, and (2) that, in contrast to AVP, OT does not seem to be involved in HA- and restraint-stress-induced ACTH and PRL secretion.
575 7659194 Involvement of oxytocin in histamine- and stress-induced ACTH and prolactin secretion.
576 7659194 In addition, we have recently shown that centrally administered histamine (HA), which is a mediator of stress-induced release of ACTH and prolactin (PRL), stimulates OT secretion.
577 7659194 The aim of the present investigation was to further characterize the HA-induced OT secretion with respect to the type of postsynaptic receptor involved and to investigate the possible role of OT in HA- and stress-induced ACTH and PRL secretion.
578 7659194 We studied (1) the effect of HA, HA agonists and HA antagonists on OT secretion in normal male rats, (2) the secretion of OT in response to HA stimulation and to restraint stress, endotoxin stress [lipopolysaccharide (LPS) administration] and insulin/hypoglycemia stress and compared the OT response to that of arginine vasopressin (AVP), (3) the OT response to restraint stress or HA in normal and AVP-deficient Brattleboro rats (DI) suffering from diabetes insipidus and (4) the effect of inhibiting the oxytocinergic system by immunoneutralization or receptor blockade on HA- and stress-induced ACTH and PRL release in normal as well as in DI rats.
579 7659194 Neither an OT antiserum nor an OT antagonist inhibited the HA- or restraint-stress-induced ACTH or PRL release in normal rats.
580 7659194 In AVP-deficient rats immunoneutralization of OT had no inhibitory effect on the HA- and restraint-stress-induced ACTH and PRL response.
581 7659194 The ACTH and PRL response to restraint stress and the ACTH response to HA was impaired in DI rats compared to their healthy controls.
582 7659194 We conclude (1) that HA stimulates OT secretion via activation of postsynaptic H1 and H2 receptors, and (2) that, in contrast to AVP, OT does not seem to be involved in HA- and restraint-stress-induced ACTH and PRL secretion.
583 7683121 Assessment of hypothalamic-pituitary function before treatment revealed pituitary deficits in all patients involving growth hormone, thyroid-stimulating hormone, luteinizing hormone, follicle-stimulating hormone, and adrenocorticotropic hormone.
584 7712683 Therefore, in our study naloxone infusion seems to have beta-endorphin-like effects in non-diabetic obese subjects by increasing their glycemic levels, with no evidence of expected insulin decrease.
585 7714765 Therefore, Met- and Leu-enkephalin, dynorphin A and beta-endorphin levels were measured in discrete brain regions and plasma from thioacetamide-treated rats in Stages II to IV of HE.
586 7714765 Pituitary and plasma beta-endorphin, Met- and Leu-enkephalin concentrations increased with the severity of HE by 50 to 290%.
587 7714765 Therefore, Met- and Leu-enkephalin, dynorphin A and beta-endorphin levels were measured in discrete brain regions and plasma from thioacetamide-treated rats in Stages II to IV of HE.
588 7714765 Pituitary and plasma beta-endorphin, Met- and Leu-enkephalin concentrations increased with the severity of HE by 50 to 290%.
589 7723679 Since the corticotropin (ACTH)/cortisol response to the minimal-effective dose of corticotropin-releasing hormone ([CRH] 0.03 microgram/kg body weight) represents a useful tool for HPA axis examination, all subjects were tested with the low-dose ovine CRH stimulation test.
590 7723679 Administration of CRH induced a small but significant increase in ACTH levels in all subjects; however, the CRH-induced ACTH increase was significantly higher in normal controls than in diabetic groups I and II.
591 7723679 When peak ACTH responses to CRH and basal cortisol levels were combined, a significant negative correlation was found (r = .545, P < .02).
592 7723679 Since the corticotropin (ACTH)/cortisol response to the minimal-effective dose of corticotropin-releasing hormone ([CRH] 0.03 microgram/kg body weight) represents a useful tool for HPA axis examination, all subjects were tested with the low-dose ovine CRH stimulation test.
593 7723679 Administration of CRH induced a small but significant increase in ACTH levels in all subjects; however, the CRH-induced ACTH increase was significantly higher in normal controls than in diabetic groups I and II.
594 7723679 When peak ACTH responses to CRH and basal cortisol levels were combined, a significant negative correlation was found (r = .545, P < .02).
595 7723679 Since the corticotropin (ACTH)/cortisol response to the minimal-effective dose of corticotropin-releasing hormone ([CRH] 0.03 microgram/kg body weight) represents a useful tool for HPA axis examination, all subjects were tested with the low-dose ovine CRH stimulation test.
596 7723679 Administration of CRH induced a small but significant increase in ACTH levels in all subjects; however, the CRH-induced ACTH increase was significantly higher in normal controls than in diabetic groups I and II.
597 7723679 When peak ACTH responses to CRH and basal cortisol levels were combined, a significant negative correlation was found (r = .545, P < .02).
598 7757071 As predicted by the interactions of mouse agouti with the extension gene (which encodes the melanocyte receptor for alpha-melanocyte stimulating hormone [alpha-MSH]), expression of ASP in transgenic mice produces a yellow coat, and expression of ASP in cell culture blocks the alpha-MSH-stimulated accumulation of cAMP in mouse melanoma cells.
599 7757071 The localization of ASP relative to other loci on chromosome 20 excludes it as a candidate for the MODY1 locus, a gene responsible for one form of early-onset non-insulin-dependent diabetes mellitus or maturity-onset diabetes of the young.
600 7784456 Neither basal ACTH secretion nor the ACTH response to corticotropin-releasing hormone (CRH) was affected by pathophysiological molar ratios of FFA:BSA.
601 7801492 Diabetes insipidus in a dog with an alpha MSH-producing pituitary tumor.
602 7821733 This resulted in an insulin resistance of all muscle types that was due to an increased glucose-fatty acid cycle, without measurable alteration of the GLUT 4 system.
603 7821733 This could be the reason for adaptive changes leading to increased levels in their hypothalamic neuropeptide Y levels and median eminence corticotropin-releasing-factor.
604 7854093 The laboratory findings showed deficiency of cortocotropin (ACTH), luteinizing hormone (LH), follicle stimulating hormone (FSH) and slight hyperprolactinemia (PRL).
605 7903584 Hyperglycemia, hypoinsulinemia, glucagon and somatostatin synthesis and secretion intensification in diabetes mellitus is accompanied by marked reorganization of hypothalamic neurohormones (CRF, vasopressin, oxytocin) secretion with corresponding signs of activity increase of synthesizing their hypothalamus nuclei and subnuclei and also ACTH, corticosterone, cortisol rise in blood.
606 7903584 Adaptation to hypoxia caused hypoglycemia, activated insulin biosynthesis, changed glucagon and somatostatin synthesis and secretion.
607 7903584 CRF concentration, corticosterone and cortisol, ACTH in blood was not changed, vasopressin concentration lowered, oxytocin in median eminence of hypothalamus increased to a higher degree than in diabetes.
608 7903584 Adaptation to hypoxia corrected impaired hormone balance and state of Langerhans islets (beta-cells destruction process inhibition, insulin biosynthesis stimulation, glucagon and somatostatin secretion decrease) in diabetes mellitus, hypothalamic neurohormones participating in this process.
609 7903584 Hyperglycemia, hypoinsulinemia, glucagon and somatostatin synthesis and secretion intensification in diabetes mellitus is accompanied by marked reorganization of hypothalamic neurohormones (CRF, vasopressin, oxytocin) secretion with corresponding signs of activity increase of synthesizing their hypothalamus nuclei and subnuclei and also ACTH, corticosterone, cortisol rise in blood.
610 7903584 Adaptation to hypoxia caused hypoglycemia, activated insulin biosynthesis, changed glucagon and somatostatin synthesis and secretion.
611 7903584 CRF concentration, corticosterone and cortisol, ACTH in blood was not changed, vasopressin concentration lowered, oxytocin in median eminence of hypothalamus increased to a higher degree than in diabetes.
612 7903584 Adaptation to hypoxia corrected impaired hormone balance and state of Langerhans islets (beta-cells destruction process inhibition, insulin biosynthesis stimulation, glucagon and somatostatin secretion decrease) in diabetes mellitus, hypothalamic neurohormones participating in this process.
613 7904782 Hyperglycemia, hypoinsulinemia, and an increase of glucagon and somatostatin concentration under diabetes mellitus are accompanied by intensification of secretion of hypothalamic neurohormones (CRF, vasopressin, oxytocin, somatostatin) with the corresponding signs of the increase in activity of hypothalamus nuclei and subnuclei secreting them as well as ACTH, corticosterone and cortisol rise in blood.
614 7904782 Adaptation to hypoxia has caused hypoglycemia, activated insulin biosynthesis, changed glucagon and somatostatin synthesis and secretion.
615 7904782 CRF corticosterone, cortisol and ACTH concentration in blood was not changed, vasopressin concentration lowered, somatostatin and oxytocin amount (in hypothalamus) increased to a higher degree than under diabetes.
616 7904782 Adaptation to hypoxia corrected impaired hormone balance and state of Langerhans islets (beta-cells destruction process inhibition, insulin biosynthesis stimulation, glucagon and somatostatin secretion decrease) under diabetes mellitus, hypothalamus neurohormones participating in this process.
617 7904782 Hyperglycemia, hypoinsulinemia, and an increase of glucagon and somatostatin concentration under diabetes mellitus are accompanied by intensification of secretion of hypothalamic neurohormones (CRF, vasopressin, oxytocin, somatostatin) with the corresponding signs of the increase in activity of hypothalamus nuclei and subnuclei secreting them as well as ACTH, corticosterone and cortisol rise in blood.
618 7904782 Adaptation to hypoxia has caused hypoglycemia, activated insulin biosynthesis, changed glucagon and somatostatin synthesis and secretion.
619 7904782 CRF corticosterone, cortisol and ACTH concentration in blood was not changed, vasopressin concentration lowered, somatostatin and oxytocin amount (in hypothalamus) increased to a higher degree than under diabetes.
620 7904782 Adaptation to hypoxia corrected impaired hormone balance and state of Langerhans islets (beta-cells destruction process inhibition, insulin biosynthesis stimulation, glucagon and somatostatin secretion decrease) under diabetes mellitus, hypothalamus neurohormones participating in this process.
621 7938053 The studies reported herein were conducted to confirm that the pituitary gland is involved in maintaining growth hormone (GH) resistance in rats with insulin-dependent diabetes mellitus (IDDM) and to determine whether the adrenocorticotropic hormone (ACTH)-adrenal cortical axis is responsible.
622 7938053 These studies confirm that the pituitary contributes to diabetic growth impairment and show that the ACTH-adrenal cortical axis is primarily responsible for the GH-resistant state that develops in rats with IDDM.
623 7938053 The studies reported herein were conducted to confirm that the pituitary gland is involved in maintaining growth hormone (GH) resistance in rats with insulin-dependent diabetes mellitus (IDDM) and to determine whether the adrenocorticotropic hormone (ACTH)-adrenal cortical axis is responsible.
624 7938053 These studies confirm that the pituitary contributes to diabetic growth impairment and show that the ACTH-adrenal cortical axis is primarily responsible for the GH-resistant state that develops in rats with IDDM.
625 7951540 Low plasma corticotropin-releasing hormone (CRH) levels in patients with non-insulin dependent diabetes mellitus (NIDDM).
626 7951540 Plasma CRH levels were measured in patients with non-insulin dependent diabetes mellitus (NIDDM) as the pituitary-adrenal abnormalities have been reported in NIDDM.
627 7951540 They were also measured after oral administration of 75 g glucose to examine whether glucose increased plasma CRH along with insulin secretion.
628 7951540 Plasma CRH, ACTH and cortisol did not change after glucose administration in either NIDDM patients or controls.
629 7951540 Neither plasma CRH nor ACTH showed a significant correlation with plasma glucose or insulin response in NIDDM patients.
630 7951540 These results suggest that CRH secretion is not stimulated by glucose, that plasma ACTH and cortisol are increased in NIDDM patients and that CRH is not responsible for these increases.
631 7951540 Low plasma corticotropin-releasing hormone (CRH) levels in patients with non-insulin dependent diabetes mellitus (NIDDM).
632 7951540 Plasma CRH levels were measured in patients with non-insulin dependent diabetes mellitus (NIDDM) as the pituitary-adrenal abnormalities have been reported in NIDDM.
633 7951540 They were also measured after oral administration of 75 g glucose to examine whether glucose increased plasma CRH along with insulin secretion.
634 7951540 Plasma CRH, ACTH and cortisol did not change after glucose administration in either NIDDM patients or controls.
635 7951540 Neither plasma CRH nor ACTH showed a significant correlation with plasma glucose or insulin response in NIDDM patients.
636 7951540 These results suggest that CRH secretion is not stimulated by glucose, that plasma ACTH and cortisol are increased in NIDDM patients and that CRH is not responsible for these increases.
637 7951540 Low plasma corticotropin-releasing hormone (CRH) levels in patients with non-insulin dependent diabetes mellitus (NIDDM).
638 7951540 Plasma CRH levels were measured in patients with non-insulin dependent diabetes mellitus (NIDDM) as the pituitary-adrenal abnormalities have been reported in NIDDM.
639 7951540 They were also measured after oral administration of 75 g glucose to examine whether glucose increased plasma CRH along with insulin secretion.
640 7951540 Plasma CRH, ACTH and cortisol did not change after glucose administration in either NIDDM patients or controls.
641 7951540 Neither plasma CRH nor ACTH showed a significant correlation with plasma glucose or insulin response in NIDDM patients.
642 7951540 These results suggest that CRH secretion is not stimulated by glucose, that plasma ACTH and cortisol are increased in NIDDM patients and that CRH is not responsible for these increases.
643 7956715 The levels of beta-endorphin, insulin, cortisol, GH, glucagon, prolactin and TSH were measured in serum samples of 9 hyperglycaemic patients (3 female, 6 male) with a mean age of 4.1 years admitted to the pediatric emergency unit.
644 7956715 All elevated hormone levels fell to normal in 4-6 weeks with significant differences from initial levels for beta-endorphin (P < 0.05) and insulin (P < 0.01).
645 7956715 These results indicate that stress hyperglycaemia, despite high insulin levels, is associated with an increase in beta-endorphin levels.
646 7956715 The levels of beta-endorphin, insulin, cortisol, GH, glucagon, prolactin and TSH were measured in serum samples of 9 hyperglycaemic patients (3 female, 6 male) with a mean age of 4.1 years admitted to the pediatric emergency unit.
647 7956715 All elevated hormone levels fell to normal in 4-6 weeks with significant differences from initial levels for beta-endorphin (P < 0.05) and insulin (P < 0.01).
648 7956715 These results indicate that stress hyperglycaemia, despite high insulin levels, is associated with an increase in beta-endorphin levels.
649 7956715 The levels of beta-endorphin, insulin, cortisol, GH, glucagon, prolactin and TSH were measured in serum samples of 9 hyperglycaemic patients (3 female, 6 male) with a mean age of 4.1 years admitted to the pediatric emergency unit.
650 7956715 All elevated hormone levels fell to normal in 4-6 weeks with significant differences from initial levels for beta-endorphin (P < 0.05) and insulin (P < 0.01).
651 7956715 These results indicate that stress hyperglycaemia, despite high insulin levels, is associated with an increase in beta-endorphin levels.
652 7957502 Arginine vasopressin (AVP) exerts a potentiating effect on the responses of cortisol and ACTH to ovine CRF (oCRF).
653 7957502 In central diabetes insipidus, long-term substitution therapy is commonly undertaken with desmopressin (DDAVP), an analogue of the natural hormone which has a greater antidiuretic action but whose effects on the ACTH-cortisol axis are still controversial.
654 7957502 The aim of our study was to evaluate the variations in the responses of ACTH and cortisol to oCRF in various phases of the treatment of central diabetes insipidus: no treatment, endonasal treatment with DDAVP solution and oral treatment with DDAVP in tablet form.
655 7957502 Arginine vasopressin (AVP) exerts a potentiating effect on the responses of cortisol and ACTH to ovine CRF (oCRF).
656 7957502 In central diabetes insipidus, long-term substitution therapy is commonly undertaken with desmopressin (DDAVP), an analogue of the natural hormone which has a greater antidiuretic action but whose effects on the ACTH-cortisol axis are still controversial.
657 7957502 The aim of our study was to evaluate the variations in the responses of ACTH and cortisol to oCRF in various phases of the treatment of central diabetes insipidus: no treatment, endonasal treatment with DDAVP solution and oral treatment with DDAVP in tablet form.
658 7957502 Arginine vasopressin (AVP) exerts a potentiating effect on the responses of cortisol and ACTH to ovine CRF (oCRF).
659 7957502 In central diabetes insipidus, long-term substitution therapy is commonly undertaken with desmopressin (DDAVP), an analogue of the natural hormone which has a greater antidiuretic action but whose effects on the ACTH-cortisol axis are still controversial.
660 7957502 The aim of our study was to evaluate the variations in the responses of ACTH and cortisol to oCRF in various phases of the treatment of central diabetes insipidus: no treatment, endonasal treatment with DDAVP solution and oral treatment with DDAVP in tablet form.
661 7962332 Counterregulatory hormone responses to hypoglycemia are impaired in subjects with insulin-dependent diabetes mellitus (IDDM) in strict glycemic control.
662 7962332 The ACTH response to hypoglycemia was not significantly reduced in the well controlled IDDM, whereas the response to metyrapone was actually greater in this group (P < 0.05 vs. poorly controlled IDDM).
663 7962332 These data suggest that 1) the reduced epinephrine responses in well controlled IDDM may not be specific for the hypoglycemic stimulus alone, but may also occur in response to other nonhypoglycemic stimuli; 2) cortisol responses to hypoglycemia are reduced in well controlled IDDM, whereas the ACTH response to a non-hypoglycemic stimulus remains intact; and 3) GH responses to both hypoglycemic and nonhypoglycemic stimuli are preserved in well controlled IDDM.
664 7962332 The preservation of ACTH and GH responses to metyrapone and arginine, respectively, suggests adequate pituitary functional reserve in IDDM patients in strict glycemic control in response to nonhypoglycemic stimuli.
665 7962332 Counterregulatory hormone responses to hypoglycemia are impaired in subjects with insulin-dependent diabetes mellitus (IDDM) in strict glycemic control.
666 7962332 The ACTH response to hypoglycemia was not significantly reduced in the well controlled IDDM, whereas the response to metyrapone was actually greater in this group (P < 0.05 vs. poorly controlled IDDM).
667 7962332 These data suggest that 1) the reduced epinephrine responses in well controlled IDDM may not be specific for the hypoglycemic stimulus alone, but may also occur in response to other nonhypoglycemic stimuli; 2) cortisol responses to hypoglycemia are reduced in well controlled IDDM, whereas the ACTH response to a non-hypoglycemic stimulus remains intact; and 3) GH responses to both hypoglycemic and nonhypoglycemic stimuli are preserved in well controlled IDDM.
668 7962332 The preservation of ACTH and GH responses to metyrapone and arginine, respectively, suggests adequate pituitary functional reserve in IDDM patients in strict glycemic control in response to nonhypoglycemic stimuli.
669 7962332 Counterregulatory hormone responses to hypoglycemia are impaired in subjects with insulin-dependent diabetes mellitus (IDDM) in strict glycemic control.
670 7962332 The ACTH response to hypoglycemia was not significantly reduced in the well controlled IDDM, whereas the response to metyrapone was actually greater in this group (P < 0.05 vs. poorly controlled IDDM).
671 7962332 These data suggest that 1) the reduced epinephrine responses in well controlled IDDM may not be specific for the hypoglycemic stimulus alone, but may also occur in response to other nonhypoglycemic stimuli; 2) cortisol responses to hypoglycemia are reduced in well controlled IDDM, whereas the ACTH response to a non-hypoglycemic stimulus remains intact; and 3) GH responses to both hypoglycemic and nonhypoglycemic stimuli are preserved in well controlled IDDM.
672 7962332 The preservation of ACTH and GH responses to metyrapone and arginine, respectively, suggests adequate pituitary functional reserve in IDDM patients in strict glycemic control in response to nonhypoglycemic stimuli.
673 8045962 Our data demonstrate the existence of a very early phase of Addison's disease in which adrenal function shows an impaired response to ovine CRH-stimulated ACTH.
674 8070123 The possible influence of both beta-endorphin and insulin secretion on diabetes development in pregnant women was studied by means of radioimmunoassay technique (RIA-Nichols Institute).
675 8070123 Beta endorphin increase was found in both groups, according to the progression of gestation, and the rise was significantly higher in the insulin-dependent group.
676 8070123 The possible influence of both beta-endorphin and insulin secretion on diabetes development in pregnant women was studied by means of radioimmunoassay technique (RIA-Nichols Institute).
677 8070123 Beta endorphin increase was found in both groups, according to the progression of gestation, and the rise was significantly higher in the insulin-dependent group.
678 8117990 Acute acidosis stimulates insulin and corticotropin secretions acute alkalosis reduces blood insulin and corticotropin levels and increases glucagon concentration.
679 8117990 Chronic acidosis and alkalosis decrease insulin secretion and stimulates corticotropin secretion.
680 8117990 Acute acidosis stimulates insulin and corticotropin secretions acute alkalosis reduces blood insulin and corticotropin levels and increases glucagon concentration.
681 8117990 Chronic acidosis and alkalosis decrease insulin secretion and stimulates corticotropin secretion.
682 8130884 It is well known that arginine vasopressin (AVP) exerts a stimulatory effect on adrenocorticotrophic hormone (ACTH) secretion.
683 8130884 With the aim to throw further light on the interaction between AVP and corticotrophin-releasing hormone (CRH) in the neuroregulation of ACTH secretion, in this study we compared the ACTH and cortisol responses to human CRH (100 micrograms iv as a bolus) in 18 normal subjects (15 females and three males, age 22-35 years) and seven patients with central isolated diabetes insipidus (six females and one male, age 16-40 years).
684 8130884 The ACTH and cortisol responses to CRH were higher in subjects with diabetes insipidus than in controls, either when evaluated as peak values (ACTH, mean +/- SEM: 17.0 +/- 1.2 vs 7.7 +/- 0.7 pmol/l, p = 0.0003; cortisol: 611.3 +/- 59.4 vs 450.7 +/- 21.2 nmol/l, p = 0.01) or area under curve values (ACTH: 672.5 +/- 75.7 vs 364.0 +/- 33.6 pmol.l-1 x h-1, p = 0.002; cortisol: 29158.0 +/- 2937.0 vs 23236.7 +/- 1052.1 nmol.l-1 x h-1, p = 0.03).
685 8130884 These results show that patients with diabetes insipidus have an exaggerated pituitary-adrenal response to CRH.
686 8130884 It is well known that arginine vasopressin (AVP) exerts a stimulatory effect on adrenocorticotrophic hormone (ACTH) secretion.
687 8130884 With the aim to throw further light on the interaction between AVP and corticotrophin-releasing hormone (CRH) in the neuroregulation of ACTH secretion, in this study we compared the ACTH and cortisol responses to human CRH (100 micrograms iv as a bolus) in 18 normal subjects (15 females and three males, age 22-35 years) and seven patients with central isolated diabetes insipidus (six females and one male, age 16-40 years).
688 8130884 The ACTH and cortisol responses to CRH were higher in subjects with diabetes insipidus than in controls, either when evaluated as peak values (ACTH, mean +/- SEM: 17.0 +/- 1.2 vs 7.7 +/- 0.7 pmol/l, p = 0.0003; cortisol: 611.3 +/- 59.4 vs 450.7 +/- 21.2 nmol/l, p = 0.01) or area under curve values (ACTH: 672.5 +/- 75.7 vs 364.0 +/- 33.6 pmol.l-1 x h-1, p = 0.002; cortisol: 29158.0 +/- 2937.0 vs 23236.7 +/- 1052.1 nmol.l-1 x h-1, p = 0.03).
689 8130884 These results show that patients with diabetes insipidus have an exaggerated pituitary-adrenal response to CRH.
690 8130884 It is well known that arginine vasopressin (AVP) exerts a stimulatory effect on adrenocorticotrophic hormone (ACTH) secretion.
691 8130884 With the aim to throw further light on the interaction between AVP and corticotrophin-releasing hormone (CRH) in the neuroregulation of ACTH secretion, in this study we compared the ACTH and cortisol responses to human CRH (100 micrograms iv as a bolus) in 18 normal subjects (15 females and three males, age 22-35 years) and seven patients with central isolated diabetes insipidus (six females and one male, age 16-40 years).
692 8130884 The ACTH and cortisol responses to CRH were higher in subjects with diabetes insipidus than in controls, either when evaluated as peak values (ACTH, mean +/- SEM: 17.0 +/- 1.2 vs 7.7 +/- 0.7 pmol/l, p = 0.0003; cortisol: 611.3 +/- 59.4 vs 450.7 +/- 21.2 nmol/l, p = 0.01) or area under curve values (ACTH: 672.5 +/- 75.7 vs 364.0 +/- 33.6 pmol.l-1 x h-1, p = 0.002; cortisol: 29158.0 +/- 2937.0 vs 23236.7 +/- 1052.1 nmol.l-1 x h-1, p = 0.03).
693 8130884 These results show that patients with diabetes insipidus have an exaggerated pituitary-adrenal response to CRH.
694 8136620 The release of different amounts of beta-endorphin, growth hormone, and adrenocorticotropin during human (HI) and porcine (PI) insulin-induced hypoglycemia would serve as a pointer to a different insulin species effect on hypothalamic-pituitary response.
695 8136620 The glucose clamp technique was used to lower the blood glucose concentration stepwise (3.3, 2.2, 1.7 mmol/l) over similar periods in ten patients with insulin-dependent diabetes mellitus. beta-endorphin, growth hormone, and adrenocorticotropin levels were determined by radioimmunoassay from arterialized blood at the above plateaus.
696 8136620 The release of different amounts of beta-endorphin, growth hormone, and adrenocorticotropin during human (HI) and porcine (PI) insulin-induced hypoglycemia would serve as a pointer to a different insulin species effect on hypothalamic-pituitary response.
697 8136620 The glucose clamp technique was used to lower the blood glucose concentration stepwise (3.3, 2.2, 1.7 mmol/l) over similar periods in ten patients with insulin-dependent diabetes mellitus. beta-endorphin, growth hormone, and adrenocorticotropin levels were determined by radioimmunoassay from arterialized blood at the above plateaus.
698 8162147 Endocrinological findings showed a decreased ACTH, gonadotropin and growth hormone more frequently while there were 2 cases of hyperprolactinemia and 1 case of diabetes insipidus.
699 8173950 Although some of the brain structures are known to express mRNA encoding a gamma-MSH-preferring melanocortin receptor type known as MC3, the relative order of binding affinities of melanocortins, determined in concentration-response studies, was NDP-MSH > or = ACTH1-24 > or = alpha-MSH > gamma-MSH > ACTH4-10 in all brain structures.
700 8239172 To investigate the activity of the endogenous opioid system in patients with insulin-dependent diabetes mellitus during ventilatory stress situations, we measured plasma beta-endorphin levels in six male and five female diabetic patients breathing against fatiguing inspiratory resistive loads.
701 8243290 Despite the observed facilitation of morning stress-induced ACTH secretion in STZ-diabetic rats, there were no differences in hypothalamic CRF content between control and STZ-diabetic tissue.
702 8283258 Fifteen (41.7%) had prolactin (PRL)-secreting tumors, 16 (44.4%) had adrenocorticotropic hormone (ACTH)-secreting tumors (including two patients with Nelson-Salassa syndrome), and three (8.3%) had tumors secreting growth hormone (GH); two patients (5.6%) had clinically nonfunctioning tumors.
703 8283258 Long-term follow-up review (median > 5 years) revealed good control of PRL-secreting tumors (although five of 15 patients had received postoperative radiotherapy), contrasted with a 25% late recurrence rate for ACTH-secreting tumors, which had an 80% initial remission rate.
704 8283258 It is concluded that: 1) although pediatric pituitary adenomas occur primarily in adolescence, Cushing's disease is found at any age; 2) transsphenoidal surgery is feasible and safe in this age group; 3) plurihormonal tumors occur more frequently in the pediatric age group than in adults; and 4) long-term control rates in PRL- and ACTH-secreting tumors are probably similar to those seen in adults.
705 8283258 Fifteen (41.7%) had prolactin (PRL)-secreting tumors, 16 (44.4%) had adrenocorticotropic hormone (ACTH)-secreting tumors (including two patients with Nelson-Salassa syndrome), and three (8.3%) had tumors secreting growth hormone (GH); two patients (5.6%) had clinically nonfunctioning tumors.
706 8283258 Long-term follow-up review (median > 5 years) revealed good control of PRL-secreting tumors (although five of 15 patients had received postoperative radiotherapy), contrasted with a 25% late recurrence rate for ACTH-secreting tumors, which had an 80% initial remission rate.
707 8283258 It is concluded that: 1) although pediatric pituitary adenomas occur primarily in adolescence, Cushing's disease is found at any age; 2) transsphenoidal surgery is feasible and safe in this age group; 3) plurihormonal tumors occur more frequently in the pediatric age group than in adults; and 4) long-term control rates in PRL- and ACTH-secreting tumors are probably similar to those seen in adults.
708 8283258 Fifteen (41.7%) had prolactin (PRL)-secreting tumors, 16 (44.4%) had adrenocorticotropic hormone (ACTH)-secreting tumors (including two patients with Nelson-Salassa syndrome), and three (8.3%) had tumors secreting growth hormone (GH); two patients (5.6%) had clinically nonfunctioning tumors.
709 8283258 Long-term follow-up review (median > 5 years) revealed good control of PRL-secreting tumors (although five of 15 patients had received postoperative radiotherapy), contrasted with a 25% late recurrence rate for ACTH-secreting tumors, which had an 80% initial remission rate.
710 8283258 It is concluded that: 1) although pediatric pituitary adenomas occur primarily in adolescence, Cushing's disease is found at any age; 2) transsphenoidal surgery is feasible and safe in this age group; 3) plurihormonal tumors occur more frequently in the pediatric age group than in adults; and 4) long-term control rates in PRL- and ACTH-secreting tumors are probably similar to those seen in adults.
711 8294562 Insulin does not appear to be involved in the expression of lymphocyte GH or POMC.
712 8294562 The administration of insulin to the diabetic animals had no significant effect on the expression of GH or POMC by the immune cells.
713 8294562 In addition, lymphocytes do not appear to serve as a source of insulin or are the expression of genes for lymphocyte GH or ACTH altered by insulin in vitro.
714 8294562 Insulin does not appear to be involved in the expression of lymphocyte GH or POMC.
715 8294562 The administration of insulin to the diabetic animals had no significant effect on the expression of GH or POMC by the immune cells.
716 8294562 In addition, lymphocytes do not appear to serve as a source of insulin or are the expression of genes for lymphocyte GH or ACTH altered by insulin in vitro.
717 8294562 Insulin does not appear to be involved in the expression of lymphocyte GH or POMC.
718 8294562 The administration of insulin to the diabetic animals had no significant effect on the expression of GH or POMC by the immune cells.
719 8294562 In addition, lymphocytes do not appear to serve as a source of insulin or are the expression of genes for lymphocyte GH or ACTH altered by insulin in vitro.
720 8374794 The antinociceptive effects of beta-endorphin administered i.c.v. in both diabetic and non-diabetic mice were significantly antagonized by s.c. administration of naltrindole, a selective delta-opioid receptor antagonist. beta-Endorphin administered i.t. also produced a dose-dependent antinociception in both diabetic and non-diabetic mice.
721 8382698 Processing of proopiomelanocortin by insulin secretory granule proinsulin processing endopeptidases.
722 8382698 A lysed preparation of isolated insulin secretory granules efficiently cleaved murine proopiomelanocortin (mPOMC) at physiologically important Lys-Arg processing sites.
723 8382698 The principal peptide hormone products generated by the insulin secretory granule lysate were identified by specific radioimmunoassay and NH2-terminal microsequencing analysis of high performance liquid chromatography-separated products as alpha-melanocyte-stimulating hormone, corticotropin-like intermediate, gamma-lipotropin, beta-endorphin-(1-31), 18-kDa NH2-terminal fragment and, to a lesser extent, adrenocorticotrophin and beta-lipotropin.
724 8382698 The in vitro processing of mPOMC by the insulin secretory granule endopeptidase activity reported here is in excellent agreement with the in vivo processing of this prohormone by a combination of PC2 and PC3, candidates of prohormone endpeptidase, in gene transfer studies with cells that express the regulated secretory pathway (Thomas, L., Leduc, R., Thorne, B.
725 8382698 Processing of proopiomelanocortin by insulin secretory granule proinsulin processing endopeptidases.
726 8382698 A lysed preparation of isolated insulin secretory granules efficiently cleaved murine proopiomelanocortin (mPOMC) at physiologically important Lys-Arg processing sites.
727 8382698 The principal peptide hormone products generated by the insulin secretory granule lysate were identified by specific radioimmunoassay and NH2-terminal microsequencing analysis of high performance liquid chromatography-separated products as alpha-melanocyte-stimulating hormone, corticotropin-like intermediate, gamma-lipotropin, beta-endorphin-(1-31), 18-kDa NH2-terminal fragment and, to a lesser extent, adrenocorticotrophin and beta-lipotropin.
728 8382698 The in vitro processing of mPOMC by the insulin secretory granule endopeptidase activity reported here is in excellent agreement with the in vivo processing of this prohormone by a combination of PC2 and PC3, candidates of prohormone endpeptidase, in gene transfer studies with cells that express the regulated secretory pathway (Thomas, L., Leduc, R., Thorne, B.
729 8382698 Processing of proopiomelanocortin by insulin secretory granule proinsulin processing endopeptidases.
730 8382698 A lysed preparation of isolated insulin secretory granules efficiently cleaved murine proopiomelanocortin (mPOMC) at physiologically important Lys-Arg processing sites.
731 8382698 The principal peptide hormone products generated by the insulin secretory granule lysate were identified by specific radioimmunoassay and NH2-terminal microsequencing analysis of high performance liquid chromatography-separated products as alpha-melanocyte-stimulating hormone, corticotropin-like intermediate, gamma-lipotropin, beta-endorphin-(1-31), 18-kDa NH2-terminal fragment and, to a lesser extent, adrenocorticotrophin and beta-lipotropin.
732 8382698 The in vitro processing of mPOMC by the insulin secretory granule endopeptidase activity reported here is in excellent agreement with the in vivo processing of this prohormone by a combination of PC2 and PC3, candidates of prohormone endpeptidase, in gene transfer studies with cells that express the regulated secretory pathway (Thomas, L., Leduc, R., Thorne, B.
733 8382698 Processing of proopiomelanocortin by insulin secretory granule proinsulin processing endopeptidases.
734 8382698 A lysed preparation of isolated insulin secretory granules efficiently cleaved murine proopiomelanocortin (mPOMC) at physiologically important Lys-Arg processing sites.
735 8382698 The principal peptide hormone products generated by the insulin secretory granule lysate were identified by specific radioimmunoassay and NH2-terminal microsequencing analysis of high performance liquid chromatography-separated products as alpha-melanocyte-stimulating hormone, corticotropin-like intermediate, gamma-lipotropin, beta-endorphin-(1-31), 18-kDa NH2-terminal fragment and, to a lesser extent, adrenocorticotrophin and beta-lipotropin.
736 8382698 The in vitro processing of mPOMC by the insulin secretory granule endopeptidase activity reported here is in excellent agreement with the in vivo processing of this prohormone by a combination of PC2 and PC3, candidates of prohormone endpeptidase, in gene transfer studies with cells that express the regulated secretory pathway (Thomas, L., Leduc, R., Thorne, B.
737 8387536 To understand the mechanism(s) of decreased HPA axis responsiveness to ether stress in cholestasis, we administered corticotropin-releasing factor (CRF) and measured hypothalamic content, mRNA levels and in vitro secretion of CRF and arginine vasopressin (AVP), the two principal secretagogues of ACTH.
738 8387536 In BDR animals, ACTH responses to CRF were decreased and hypothalamic content of CRF and CRF mRNA expression in the paraventricular nucleus were decreased by 25 and 37%, respectively.
739 8387536 These findings demonstrate that acute cholestasis in the rat is associated with suppression of hypothalamic-pituitary-adrenal axis responsiveness to stress and demonstrate a dissociation between mechanisms of ACTH regulation mediated by CRF and AVP.
740 8387536 To understand the mechanism(s) of decreased HPA axis responsiveness to ether stress in cholestasis, we administered corticotropin-releasing factor (CRF) and measured hypothalamic content, mRNA levels and in vitro secretion of CRF and arginine vasopressin (AVP), the two principal secretagogues of ACTH.
741 8387536 In BDR animals, ACTH responses to CRF were decreased and hypothalamic content of CRF and CRF mRNA expression in the paraventricular nucleus were decreased by 25 and 37%, respectively.
742 8387536 These findings demonstrate that acute cholestasis in the rat is associated with suppression of hypothalamic-pituitary-adrenal axis responsiveness to stress and demonstrate a dissociation between mechanisms of ACTH regulation mediated by CRF and AVP.
743 8387536 To understand the mechanism(s) of decreased HPA axis responsiveness to ether stress in cholestasis, we administered corticotropin-releasing factor (CRF) and measured hypothalamic content, mRNA levels and in vitro secretion of CRF and arginine vasopressin (AVP), the two principal secretagogues of ACTH.
744 8387536 In BDR animals, ACTH responses to CRF were decreased and hypothalamic content of CRF and CRF mRNA expression in the paraventricular nucleus were decreased by 25 and 37%, respectively.
745 8387536 These findings demonstrate that acute cholestasis in the rat is associated with suppression of hypothalamic-pituitary-adrenal axis responsiveness to stress and demonstrate a dissociation between mechanisms of ACTH regulation mediated by CRF and AVP.
746 8392197 Pituitary adenylate cyclase-activating polypeptide (PACAP), a neuropeptide belonging to the vasoactive intestinal peptide (VIP)/secretion/glucagon family of peptides, interacts with a distinct high-affinity receptor (type I receptor) on a number of tissues.
747 8392197 These PACAP type I receptors have a high affinity for PACAP and a low affinity for VIP and are present in the hypothalamus and anterior pituitary, where they regulate the release of adrenocorticotropin, luteinizing hormone, growth hormone, and prolactin, and in the adrenal medulla, where they regulate the release of epinephrine.
748 8392197 Here we report the molecular cloning and functional expression of the PACAP type I receptor isolated from an AR4-2J cell cDNA library by cross-hybridization screening with a rat VIP receptor cDNA.
749 8397127 Chronic exposure of rat fat cells to insulin enhances lipolysis and activation of partially purified hormone-sensitive lipase.
750 8397127 When rat epididymal fat pads are incubated in culture medium with bovine serum albumin for 2-4 h with 2 ng/ml or 50 microU/ml of insulin, hormone-sensitive lipase activity in the postmicrosomal supernatant fraction after acid precipitation and activation with ATP-Mg2+ increases significantly compared with preparations from tissues incubated with the vehicle.
751 8397127 The specific activities of hormone-sensitive lipase in sonicates of adipocytes after primary culture with insulin at concentrations from 10 to 4000 ng/ml (250 microU to 100 mU/ml) increase in an insulin-dose-related manner.
752 8397127 Although an increase in lipolysis is seen with norepinephrine and growth hormone after insulin treatment, other lipolytic agents such as ACTH, thyrotropin, and glucagon evoke similar responses in insulin-treated and control cells.
753 8401557 One week after the operation plasma adrenocorticotropin and prolactin levels were in the control range while plasma alpha-melanocyte-stimulating hormone was elevated.
754 8406339 During periods of 1-5 years per child, the following abnormalities developed: diabetes insipidus (n = 5), osmoreceptor dysfunction (hypernatraemia with absent thirst) (n = 3), hyperprolactinaemia (n = 3), growth hormone (GH) deficiency (n = 4, of whom 3 had normal linear growth), ACTH deficiency (n = 2), TSH deficiency (n = 2) and precocious puberty (n = 1, female).
755 8412766 Adrenal steroid and adrenocorticotropin responses to human corticotropin-releasing hormone stimulation test in adolescents with type I diabetes mellitus.
756 8412766 To determine whether abnormalities of hypothalamic-pituitary-adrenal axis function occur in type I diabetes mellitus, corticotropin, cortisol, 17-hydroxyprogesterone (17-OHP), androstenedione (D4-A), dehydroepiandrosterone (DHEA), and DHEA sulfate (DS) levels were measured after an intravenous (IV) injection of 1 microgram/kg human corticotropin-releasing hormone (CRH) in diabetic adolescents and normal age-matched subjects.
757 8412766 CRH produced a consistent increase in corticotropin blood levels that was comparable in the two groups.
758 8412766 In conclusion, patients with type I diabetes have a discrete response of adrenal steroids to CRH stimulation that appears to be independent of corticotropin secretion.
759 8412766 This phenomenon might be related to a direct effect of insulin on enzyme systems involved in the biosynthetic pathway of adrenal steroids or, alternatively, to an intra-adrenal CRH/corticotropin mechanism acting on the adrenal cortex in a paracrine manner.
760 8412766 Adrenal steroid and adrenocorticotropin responses to human corticotropin-releasing hormone stimulation test in adolescents with type I diabetes mellitus.
761 8412766 To determine whether abnormalities of hypothalamic-pituitary-adrenal axis function occur in type I diabetes mellitus, corticotropin, cortisol, 17-hydroxyprogesterone (17-OHP), androstenedione (D4-A), dehydroepiandrosterone (DHEA), and DHEA sulfate (DS) levels were measured after an intravenous (IV) injection of 1 microgram/kg human corticotropin-releasing hormone (CRH) in diabetic adolescents and normal age-matched subjects.
762 8412766 CRH produced a consistent increase in corticotropin blood levels that was comparable in the two groups.
763 8412766 In conclusion, patients with type I diabetes have a discrete response of adrenal steroids to CRH stimulation that appears to be independent of corticotropin secretion.
764 8412766 This phenomenon might be related to a direct effect of insulin on enzyme systems involved in the biosynthetic pathway of adrenal steroids or, alternatively, to an intra-adrenal CRH/corticotropin mechanism acting on the adrenal cortex in a paracrine manner.
765 8412766 Adrenal steroid and adrenocorticotropin responses to human corticotropin-releasing hormone stimulation test in adolescents with type I diabetes mellitus.
766 8412766 To determine whether abnormalities of hypothalamic-pituitary-adrenal axis function occur in type I diabetes mellitus, corticotropin, cortisol, 17-hydroxyprogesterone (17-OHP), androstenedione (D4-A), dehydroepiandrosterone (DHEA), and DHEA sulfate (DS) levels were measured after an intravenous (IV) injection of 1 microgram/kg human corticotropin-releasing hormone (CRH) in diabetic adolescents and normal age-matched subjects.
767 8412766 CRH produced a consistent increase in corticotropin blood levels that was comparable in the two groups.
768 8412766 In conclusion, patients with type I diabetes have a discrete response of adrenal steroids to CRH stimulation that appears to be independent of corticotropin secretion.
769 8412766 This phenomenon might be related to a direct effect of insulin on enzyme systems involved in the biosynthetic pathway of adrenal steroids or, alternatively, to an intra-adrenal CRH/corticotropin mechanism acting on the adrenal cortex in a paracrine manner.
770 8412766 Adrenal steroid and adrenocorticotropin responses to human corticotropin-releasing hormone stimulation test in adolescents with type I diabetes mellitus.
771 8412766 To determine whether abnormalities of hypothalamic-pituitary-adrenal axis function occur in type I diabetes mellitus, corticotropin, cortisol, 17-hydroxyprogesterone (17-OHP), androstenedione (D4-A), dehydroepiandrosterone (DHEA), and DHEA sulfate (DS) levels were measured after an intravenous (IV) injection of 1 microgram/kg human corticotropin-releasing hormone (CRH) in diabetic adolescents and normal age-matched subjects.
772 8412766 CRH produced a consistent increase in corticotropin blood levels that was comparable in the two groups.
773 8412766 In conclusion, patients with type I diabetes have a discrete response of adrenal steroids to CRH stimulation that appears to be independent of corticotropin secretion.
774 8412766 This phenomenon might be related to a direct effect of insulin on enzyme systems involved in the biosynthetic pathway of adrenal steroids or, alternatively, to an intra-adrenal CRH/corticotropin mechanism acting on the adrenal cortex in a paracrine manner.
775 8412766 Adrenal steroid and adrenocorticotropin responses to human corticotropin-releasing hormone stimulation test in adolescents with type I diabetes mellitus.
776 8412766 To determine whether abnormalities of hypothalamic-pituitary-adrenal axis function occur in type I diabetes mellitus, corticotropin, cortisol, 17-hydroxyprogesterone (17-OHP), androstenedione (D4-A), dehydroepiandrosterone (DHEA), and DHEA sulfate (DS) levels were measured after an intravenous (IV) injection of 1 microgram/kg human corticotropin-releasing hormone (CRH) in diabetic adolescents and normal age-matched subjects.
777 8412766 CRH produced a consistent increase in corticotropin blood levels that was comparable in the two groups.
778 8412766 In conclusion, patients with type I diabetes have a discrete response of adrenal steroids to CRH stimulation that appears to be independent of corticotropin secretion.
779 8412766 This phenomenon might be related to a direct effect of insulin on enzyme systems involved in the biosynthetic pathway of adrenal steroids or, alternatively, to an intra-adrenal CRH/corticotropin mechanism acting on the adrenal cortex in a paracrine manner.
780 8485640 A variety of endocrinological abnormalities, relevant to both pathogenesis and diagnosis, may be demonstrated in equine Cushing's disease, including hyperadrenocorticism, peripheral insulin resistance and excessive POMC-peptide secretion from the pituitary gland.
781 8531185 Central diabetes insipidus in a dog with a pro-opiomelanocortin-producing pituitary tumor not causing hyperadrenocorticism.
782 8539261 Regulation of insulin-like growth factor-binding proteins in rats with insulin-dependent diabetes mellitus.
783 8539261 As previously reported, activation of the adrenocorticotropic hormone (ACTH)-adrenal cortical axis in rats with insulin-dependent diabetes mellitus (IDDM) reduces their growth and circulating insulin-like growth factor-I (IGF-I) levels and induces a resistance to growth hormone (GH) and IGF-I.
784 8539261 Induction of IDDM increased serum concentrations of IGFBP-1 and -2 and reduced those of IGFBP-3 and -4.
785 8539261 Although serum IGFBP-1 and -2 concentrations remained elevated in the HxDb rats compared with the NonDb controls, IGFBP-1 levels were reduced compared with those in the Db controls.
786 8539261 Serum IGFBP-3 and -4 were reduced to levels below those in Db controls.
787 8539261 Although IGFBP-3 and -4 concentrations were elevated to normal in AxDb rats, the IGFBP-2 concentration was increased above those in both NonDb and Db rats and the IGFBP-1 concentration was reduced.
788 8539261 Administration of pGH increased serum IGFBP-4 concentrations in all groups and IGFBP-3 concentrations in all groups except the Db.
789 8539261 The refractoriness of Db rats to pGH is associated with a failure of the hormone to elevate IGFBP-2 and -3 titers and to reduce those of IGFBP-1.
790 8539261 Impaired growth was associated with substantially reduced IGFBP-3 concentrations and elevated IGFBP-1, whereas growth restoration was associated with the opposite changes.
791 8593805 To determine the effects of PSC on hypothalamic and pituitary function, VP and CRH receptors and POMC messenger RNA (mRNA) in the pituitary, and CRH, VP, and OT mRNA levels in the PVN were examined in 7-day PSC and sham-operated rats.
792 8593805 Plasma ACTH and corticosterone levels were significantly increased by PSC, an effect that was attenuated by minipump infusion of desamino-[D-Arg8]-vasopressin (DDAVP) given to correct the diabetes insipidus. [3H]VP binding to anterior pituitary membranes from PSC rats was reduced by 50% compared to that in sham-operated controls, but VP V1b receptor mRNA levels measured by in situ hybridization were unchanged.
793 8593805 Correction of the diabetes insipidus by DDAVP treatment further decreased hypothalamic VP mRNA levels, but restored CRH mRNA to control levels.
794 8593805 To determine the effects of PSC on hypothalamic and pituitary function, VP and CRH receptors and POMC messenger RNA (mRNA) in the pituitary, and CRH, VP, and OT mRNA levels in the PVN were examined in 7-day PSC and sham-operated rats.
795 8593805 Plasma ACTH and corticosterone levels were significantly increased by PSC, an effect that was attenuated by minipump infusion of desamino-[D-Arg8]-vasopressin (DDAVP) given to correct the diabetes insipidus. [3H]VP binding to anterior pituitary membranes from PSC rats was reduced by 50% compared to that in sham-operated controls, but VP V1b receptor mRNA levels measured by in situ hybridization were unchanged.
796 8593805 Correction of the diabetes insipidus by DDAVP treatment further decreased hypothalamic VP mRNA levels, but restored CRH mRNA to control levels.
797 8597446 At the level of the CNS, insulin inhibits and corticosteroids stimulate expression of NPY mRNA in the arcuate nuclei, and these actions may explain, in part, the reciprocal actions of the hormones on energy acquisition.
798 8597446 By contrast, NPY injected ivt stimulates identical ACTH responses in the AM in fed rats and in rats fasted overnight, suggesting that NPY acts to stimulate CRF secretion at a site closer to the PVN than the stress of restraint, which is filtered through the neural energy balance system.
799 8606627 Increased levels of secondary hormones, such as gastrin (4 patients), vasoactive intestinal peptide (1 patient), serotonin (5 patients), insulin (6 patients, clinically significant in 1 only), human pancreatic polypeptide (2 patients), calcitonin (2 patients) and adrenocorticotropic hormone (2 patients), contributed to clinical symptoms leading to the diagnosis of an islet cell tumor before the onset of the full glucagonoma syndrome in 2 patients.
800 8636289 The epinephrine and cortisol responses to hypoglycemia are reduced in insulin-dependent diabetes mellitus (IDDM) patients in strict glycemic control.
801 8636289 To examine this question, we measured counterregulatory hormone secretion during a 3-h hypoglycemic hyperinsulinemic clamp (12 pmol/kg.min) that lowered glucose from 5.0 to 2.2 mmol/L in steps of 0.55 mmol/L every 30 min in 13 well controlled IDDM subjects (hemoglobin A1, 7.8 +/- 0.2%), 14 poorly controlled IDDM subjects (hemoglobin A1, 12.3 +/- 1.5%), and 20 healthy volunteers.
802 8636289 At the nadir glucose level (2.2 mmol/L), ACTH, cortisol, and epinephrine levels were significantly lower in well controlled IDDM compared to healthy controls, and the glucose levels required for significant secretion of ACTH, cortisol, and epinephrine also were lower in well controlled IDDM compared to those in both poorly controlled IDDM and healthy volunteers (P < 0.05).
803 8636289 We conclude that 1) ACTH, cortisol, and epinephrine responses during hypoglycemia are reduced in IDDM patients in strict glycemic control; 2) the lower cortisol response is correlated with reduced ACTH levels; and 3) in healthy subjects, the cortisol response to hypoglycemia is abolished by adrenocortical blockade with metyrapone, whereas the epinephrine response to hypoglycemia remains intact.
804 8636289 The epinephrine and cortisol responses to hypoglycemia are reduced in insulin-dependent diabetes mellitus (IDDM) patients in strict glycemic control.
805 8636289 To examine this question, we measured counterregulatory hormone secretion during a 3-h hypoglycemic hyperinsulinemic clamp (12 pmol/kg.min) that lowered glucose from 5.0 to 2.2 mmol/L in steps of 0.55 mmol/L every 30 min in 13 well controlled IDDM subjects (hemoglobin A1, 7.8 +/- 0.2%), 14 poorly controlled IDDM subjects (hemoglobin A1, 12.3 +/- 1.5%), and 20 healthy volunteers.
806 8636289 At the nadir glucose level (2.2 mmol/L), ACTH, cortisol, and epinephrine levels were significantly lower in well controlled IDDM compared to healthy controls, and the glucose levels required for significant secretion of ACTH, cortisol, and epinephrine also were lower in well controlled IDDM compared to those in both poorly controlled IDDM and healthy volunteers (P < 0.05).
807 8636289 We conclude that 1) ACTH, cortisol, and epinephrine responses during hypoglycemia are reduced in IDDM patients in strict glycemic control; 2) the lower cortisol response is correlated with reduced ACTH levels; and 3) in healthy subjects, the cortisol response to hypoglycemia is abolished by adrenocortical blockade with metyrapone, whereas the epinephrine response to hypoglycemia remains intact.
808 8641721 Moreover, AII acts on the central receptors to stimulate AVP and ACTH secretion, drinking and peripherally increase synthesis and secretion of aldosterone.
809 8710916 Transgenic nonobese diabetic mice were created in which insulin expression was targeted to proopiomelanocortin-expressing pituitary cells.
810 8710916 Proopiomelanocortin-expressing intermediate lobe pituitary cells efficiently secrete fully processed, mature insulin via a regulated secretory pathway, similar to islet beta cells.
811 8710916 Transgenic nonobese diabetic mice were created in which insulin expression was targeted to proopiomelanocortin-expressing pituitary cells.
812 8710916 Proopiomelanocortin-expressing intermediate lobe pituitary cells efficiently secrete fully processed, mature insulin via a regulated secretory pathway, similar to islet beta cells.
813 8738484 Remission of disease was achieved in 81%, 77%, 91%, and 100% of GH-, PRL-, ACTH-, and TSH-secreting adenomas, respectively.
814 8739322 Pituitary contents of beta-endorphin, dynorphin, substance P, cholecystokinin and somatostatin in rats with streptozotocin-induced diabetes.
815 8739322 Substance P, dynorphin and beta-endorphin in both pituitary lobes and cholecystokinin and somatostatin in the neurointermediate lobe (NIL) were measured 4 weeks after streptozotocin treatment in adult male rats.
816 8739322 There were significant decreases of substance P levels in both the anterior lobe (AL) and NIL, and of cholecystokinin, dynorphin and beta-endorphin in the NIL, whereas the dynorphin content in the AL increased, when values were expressed on a per-lobe basis.
817 8739322 Pituitary contents of beta-endorphin, dynorphin, substance P, cholecystokinin and somatostatin in rats with streptozotocin-induced diabetes.
818 8739322 Substance P, dynorphin and beta-endorphin in both pituitary lobes and cholecystokinin and somatostatin in the neurointermediate lobe (NIL) were measured 4 weeks after streptozotocin treatment in adult male rats.
819 8739322 There were significant decreases of substance P levels in both the anterior lobe (AL) and NIL, and of cholecystokinin, dynorphin and beta-endorphin in the NIL, whereas the dynorphin content in the AL increased, when values were expressed on a per-lobe basis.
820 8739322 Pituitary contents of beta-endorphin, dynorphin, substance P, cholecystokinin and somatostatin in rats with streptozotocin-induced diabetes.
821 8739322 Substance P, dynorphin and beta-endorphin in both pituitary lobes and cholecystokinin and somatostatin in the neurointermediate lobe (NIL) were measured 4 weeks after streptozotocin treatment in adult male rats.
822 8739322 There were significant decreases of substance P levels in both the anterior lobe (AL) and NIL, and of cholecystokinin, dynorphin and beta-endorphin in the NIL, whereas the dynorphin content in the AL increased, when values were expressed on a per-lobe basis.
823 8741254 Immunohistochemical studies showed positive reaction for S-100 protein in the tumor cell nuclei, but no reaction for glial fibrillary acidic protein, neurofilament protein, Leu-7, oxytocin, beta-endorphin, adrenocorticotropic hormone, and vimentin.
824 8750568 We administered a recently developed neuroendocrine function test that combines dexamethasone suppression (1.5 mg orally at 2300 h) and corticotropin-releasing hormone (CRH) stimulation (100 micrograms i.v. at 1500 h the following day) and measured the response of plasma cortisol and corticotrophin (ACTH) secretion in 19 patients with an acute exacerbation of MS.
825 8777245 Umbilical cord dopamine beta-hydroxylase, chromogranin A and met-enkephalin after conditions associated with chronic intrauterine stress.
826 8781292 We measured plasma met-enkephalin (met-Enk) levels in eight neuropathic (four with insulin-dependent diabetes mellitus [IDDM] and four with non-insulin-dependent diabetes mellitus [NIDDM]) and eight nonneuropathic (four IDDM and four NIDDM) diabetic patients to study met-Enk secretion in diabetic patients with asymptomatic autonomic neuropathy.
827 8815789 Germline loss of function mutations in rhodopsin, cone opsins, the V2 vasopressin receptor, ACTH receptor, and calcium-sensing receptor are responsible for retinitis pigmentosa, color blindness, nephrogenic diabetes insipidus, familial ACTH resistance, and familial hypocalciuric hypercalcemia, respectively.
828 8817849 Immunohistochemical staining for growth hormone, adrenocorticotropic hormone, and prolactin showed a strong immunolabeling for growth hormone within the cytoplasm of the tumor cells.
829 8888355 Effects of corticotropin-releasing hormone on ACTH, cortisol and 13, 14-dihydro-15-keto prostaglandin E2 in patients with diabetes insipidus before and after captopril treatment.
830 8888355 A corticotropin-releasing hormone (CRH) test was performed on 7 patients with central diabetes insipidus (DI) and on 7 healthy subjects.
831 8888355 The short-term captopril treatment resulted in a significant decrease of both basal and CRH-stimulated ACTH and cortisol levels in the patients with DI.
832 8888355 Angiotensin II (A II) is involved in the regulation of ACTH.
833 8888355 Effects of corticotropin-releasing hormone on ACTH, cortisol and 13, 14-dihydro-15-keto prostaglandin E2 in patients with diabetes insipidus before and after captopril treatment.
834 8888355 A corticotropin-releasing hormone (CRH) test was performed on 7 patients with central diabetes insipidus (DI) and on 7 healthy subjects.
835 8888355 The short-term captopril treatment resulted in a significant decrease of both basal and CRH-stimulated ACTH and cortisol levels in the patients with DI.
836 8888355 Angiotensin II (A II) is involved in the regulation of ACTH.
837 8888355 Effects of corticotropin-releasing hormone on ACTH, cortisol and 13, 14-dihydro-15-keto prostaglandin E2 in patients with diabetes insipidus before and after captopril treatment.
838 8888355 A corticotropin-releasing hormone (CRH) test was performed on 7 patients with central diabetes insipidus (DI) and on 7 healthy subjects.
839 8888355 The short-term captopril treatment resulted in a significant decrease of both basal and CRH-stimulated ACTH and cortisol levels in the patients with DI.
840 8888355 Angiotensin II (A II) is involved in the regulation of ACTH.
841 8915692 We extracted gammaglobulins from the serum of 10 patients with insulin-dependent diabetes mellitus (IDDM) to investigate their effect on anterior pituitary hormone secretion using cultures of rat anterior pituitary cells.
842 8915692 The gammaglobulin from each of the 3 patients with PGA and an isolated failure of secretion of adrenocorticotropic hormone (ACTH), thyroid stimulating hormone (TSH) or gonadotropin inhibited the secretion of ACTH, TSH or gonadotropin in cultures of rat anterior pituitary cells.
843 8928409 The cause of IHH in diabetics is the coincidence of several pathogenic factors: 1. hypersecretion of ANF with hyperosmolar hyperglycaemic hypervolaemia and hyperfiltration already at the onset of DN, 2. early development of autonomous neuropathy of the sympathetic nerve, 3. reduced renin and prostaglandin formation already in the early stages of DN, 4. reduced extrarenal isorenin formation, 5. reduced conversion of prorenin into active renin, 6. reduced reactivity of the zona glomerulosa to AII, hyperkalaemia and ACTH for its functional reconstruction as a result of periodic activation of contraregulative hormones by fluctuations of the blood sugar level in diabetic patients, 7. reduced response of the distal renal tubule to aldosterone because of tubulointerstitial changes.
844 8930533 After delivery, plasma levels of PRL, ACTH and cortisol decreased markedly.
845 8930533 Because pituitary function tests indicated that ACTH, PRL, GH and TSH were of low levels, hydrocortisone and L-thyroxine were orally administered.
846 8930533 After delivery, plasma levels of PRL, ACTH and cortisol decreased markedly.
847 8930533 Because pituitary function tests indicated that ACTH, PRL, GH and TSH were of low levels, hydrocortisone and L-thyroxine were orally administered.
848 8931651 Prolactin and beta-endorphin responses to hypoglycemia are reduced in well-controlled insulin-dependent diabetes mellitus.
849 8931651 Several pituitary hormones, including corticotropin (ACTH), growth hormone (GH), prolactin, and beta-endorphin (but not thyrotropin, follicle-stimulating hormone, or luteinizing hormone), are released in response to hypoglycemia in normal subjects.
850 8931651 In patients with insulin-dependent diabetes mellitus (IDDM), the degree of glycemic control is known to alter ACTH and GH responses to hypoglycemia.
851 8931651 The current study was performed to examine the effect of glycemic control on prolactin and beta-endorphin responses to hypoglycemia in subjects with IDDM.
852 8931651 The 10 diabetic subjects in good glycemic control (mean hemoglobin A1 [HbA1], 7.5% +/- 0.3%; normal range, 5.4% to 7.4%) were compared with the 10 poorly controlled patients (mean HbA1, 12.6% +/- 0.5%; P < .001 v well-controlled diabetic group).
853 8931651 During hypoglycemia, prolactin levels in the well-controlled diabetic group did not change (7 +/- 1 microgram/L at plasma glucose 5.0 mmol/L to 9 +/- 2 micrograms/L at plasma glucose 2.2 mmol/L), whereas prolactin levels increased markedly in the poorly controlled diabetic group (7 +/- 2 micrograms/L to 44 +/- 17 micrograms/L) and healthy volunteers (12 +/- 2 micrograms/L to 60 +/- 19 micrograms/L, P < .05 between IDDM groups).
854 8931651 The plasma glucose threshold required for stimulation of prolactin secretion was 2.2 +/- 0.1 mmol/L in well-controlled IDDM, 3.0 +/- 0.4 mmol/L in poorly controlled IDDM, and 2.4 +/- 0.1 mmol/L in healthy subjects (P < .05 between IDDM groups).
855 8931651 The increase in beta-endorphin levels was also attenuated in well-controlled IDDM patients (4 +/- 1 pmol/L at plasma glucose 5.0 mmol/L to 11 +/- 4 pmol/L at plasma glucose 2.2 mmol/L) versus poorly controlled IDDM patients (5 +/- 1 pmol/L to 26 +/- 7 pmol/L) and healthy subjects (8 +/- 1 pmol/L to 56 +/- 13 pmol/L).
856 8931651 The plasma glucose threshold required for stimulation of beta-endorphin release was again lower in well-controlled IDDM versus poorly controlled IDDM patients (2.2 +/- 0.1 v 3.0 +/- 0.3 mmol/L) and healthy subjects (2.5 +/- 0.4 mmol/L, P < .05 between IDDM groups).
857 8931651 In conclusion, prolactin and beta-endorphin responses to a standardized hypoglycemic stimulus (plasma glucose, 2.2 mmol/L) are reduced and plasma glucose levels required to stimulate release of prolactin and beta-endorphin are lower in well-controlled IDDM compared with poorly controlled IDDM and healthy subjects.
858 8931651 Prolactin and beta-endorphin responses to hypoglycemia are reduced in well-controlled insulin-dependent diabetes mellitus.
859 8931651 Several pituitary hormones, including corticotropin (ACTH), growth hormone (GH), prolactin, and beta-endorphin (but not thyrotropin, follicle-stimulating hormone, or luteinizing hormone), are released in response to hypoglycemia in normal subjects.
860 8931651 In patients with insulin-dependent diabetes mellitus (IDDM), the degree of glycemic control is known to alter ACTH and GH responses to hypoglycemia.
861 8931651 The current study was performed to examine the effect of glycemic control on prolactin and beta-endorphin responses to hypoglycemia in subjects with IDDM.
862 8931651 The 10 diabetic subjects in good glycemic control (mean hemoglobin A1 [HbA1], 7.5% +/- 0.3%; normal range, 5.4% to 7.4%) were compared with the 10 poorly controlled patients (mean HbA1, 12.6% +/- 0.5%; P < .001 v well-controlled diabetic group).
863 8931651 During hypoglycemia, prolactin levels in the well-controlled diabetic group did not change (7 +/- 1 microgram/L at plasma glucose 5.0 mmol/L to 9 +/- 2 micrograms/L at plasma glucose 2.2 mmol/L), whereas prolactin levels increased markedly in the poorly controlled diabetic group (7 +/- 2 micrograms/L to 44 +/- 17 micrograms/L) and healthy volunteers (12 +/- 2 micrograms/L to 60 +/- 19 micrograms/L, P < .05 between IDDM groups).
864 8931651 The plasma glucose threshold required for stimulation of prolactin secretion was 2.2 +/- 0.1 mmol/L in well-controlled IDDM, 3.0 +/- 0.4 mmol/L in poorly controlled IDDM, and 2.4 +/- 0.1 mmol/L in healthy subjects (P < .05 between IDDM groups).
865 8931651 The increase in beta-endorphin levels was also attenuated in well-controlled IDDM patients (4 +/- 1 pmol/L at plasma glucose 5.0 mmol/L to 11 +/- 4 pmol/L at plasma glucose 2.2 mmol/L) versus poorly controlled IDDM patients (5 +/- 1 pmol/L to 26 +/- 7 pmol/L) and healthy subjects (8 +/- 1 pmol/L to 56 +/- 13 pmol/L).
866 8931651 The plasma glucose threshold required for stimulation of beta-endorphin release was again lower in well-controlled IDDM versus poorly controlled IDDM patients (2.2 +/- 0.1 v 3.0 +/- 0.3 mmol/L) and healthy subjects (2.5 +/- 0.4 mmol/L, P < .05 between IDDM groups).
867 8931651 In conclusion, prolactin and beta-endorphin responses to a standardized hypoglycemic stimulus (plasma glucose, 2.2 mmol/L) are reduced and plasma glucose levels required to stimulate release of prolactin and beta-endorphin are lower in well-controlled IDDM compared with poorly controlled IDDM and healthy subjects.
868 8931651 Prolactin and beta-endorphin responses to hypoglycemia are reduced in well-controlled insulin-dependent diabetes mellitus.
869 8931651 Several pituitary hormones, including corticotropin (ACTH), growth hormone (GH), prolactin, and beta-endorphin (but not thyrotropin, follicle-stimulating hormone, or luteinizing hormone), are released in response to hypoglycemia in normal subjects.
870 8931651 In patients with insulin-dependent diabetes mellitus (IDDM), the degree of glycemic control is known to alter ACTH and GH responses to hypoglycemia.
871 8931651 The current study was performed to examine the effect of glycemic control on prolactin and beta-endorphin responses to hypoglycemia in subjects with IDDM.
872 8931651 The 10 diabetic subjects in good glycemic control (mean hemoglobin A1 [HbA1], 7.5% +/- 0.3%; normal range, 5.4% to 7.4%) were compared with the 10 poorly controlled patients (mean HbA1, 12.6% +/- 0.5%; P < .001 v well-controlled diabetic group).
873 8931651 During hypoglycemia, prolactin levels in the well-controlled diabetic group did not change (7 +/- 1 microgram/L at plasma glucose 5.0 mmol/L to 9 +/- 2 micrograms/L at plasma glucose 2.2 mmol/L), whereas prolactin levels increased markedly in the poorly controlled diabetic group (7 +/- 2 micrograms/L to 44 +/- 17 micrograms/L) and healthy volunteers (12 +/- 2 micrograms/L to 60 +/- 19 micrograms/L, P < .05 between IDDM groups).
874 8931651 The plasma glucose threshold required for stimulation of prolactin secretion was 2.2 +/- 0.1 mmol/L in well-controlled IDDM, 3.0 +/- 0.4 mmol/L in poorly controlled IDDM, and 2.4 +/- 0.1 mmol/L in healthy subjects (P < .05 between IDDM groups).
875 8931651 The increase in beta-endorphin levels was also attenuated in well-controlled IDDM patients (4 +/- 1 pmol/L at plasma glucose 5.0 mmol/L to 11 +/- 4 pmol/L at plasma glucose 2.2 mmol/L) versus poorly controlled IDDM patients (5 +/- 1 pmol/L to 26 +/- 7 pmol/L) and healthy subjects (8 +/- 1 pmol/L to 56 +/- 13 pmol/L).
876 8931651 The plasma glucose threshold required for stimulation of beta-endorphin release was again lower in well-controlled IDDM versus poorly controlled IDDM patients (2.2 +/- 0.1 v 3.0 +/- 0.3 mmol/L) and healthy subjects (2.5 +/- 0.4 mmol/L, P < .05 between IDDM groups).
877 8931651 In conclusion, prolactin and beta-endorphin responses to a standardized hypoglycemic stimulus (plasma glucose, 2.2 mmol/L) are reduced and plasma glucose levels required to stimulate release of prolactin and beta-endorphin are lower in well-controlled IDDM compared with poorly controlled IDDM and healthy subjects.
878 8931651 Prolactin and beta-endorphin responses to hypoglycemia are reduced in well-controlled insulin-dependent diabetes mellitus.
879 8931651 Several pituitary hormones, including corticotropin (ACTH), growth hormone (GH), prolactin, and beta-endorphin (but not thyrotropin, follicle-stimulating hormone, or luteinizing hormone), are released in response to hypoglycemia in normal subjects.
880 8931651 In patients with insulin-dependent diabetes mellitus (IDDM), the degree of glycemic control is known to alter ACTH and GH responses to hypoglycemia.
881 8931651 The current study was performed to examine the effect of glycemic control on prolactin and beta-endorphin responses to hypoglycemia in subjects with IDDM.
882 8931651 The 10 diabetic subjects in good glycemic control (mean hemoglobin A1 [HbA1], 7.5% +/- 0.3%; normal range, 5.4% to 7.4%) were compared with the 10 poorly controlled patients (mean HbA1, 12.6% +/- 0.5%; P < .001 v well-controlled diabetic group).
883 8931651 During hypoglycemia, prolactin levels in the well-controlled diabetic group did not change (7 +/- 1 microgram/L at plasma glucose 5.0 mmol/L to 9 +/- 2 micrograms/L at plasma glucose 2.2 mmol/L), whereas prolactin levels increased markedly in the poorly controlled diabetic group (7 +/- 2 micrograms/L to 44 +/- 17 micrograms/L) and healthy volunteers (12 +/- 2 micrograms/L to 60 +/- 19 micrograms/L, P < .05 between IDDM groups).
884 8931651 The plasma glucose threshold required for stimulation of prolactin secretion was 2.2 +/- 0.1 mmol/L in well-controlled IDDM, 3.0 +/- 0.4 mmol/L in poorly controlled IDDM, and 2.4 +/- 0.1 mmol/L in healthy subjects (P < .05 between IDDM groups).
885 8931651 The increase in beta-endorphin levels was also attenuated in well-controlled IDDM patients (4 +/- 1 pmol/L at plasma glucose 5.0 mmol/L to 11 +/- 4 pmol/L at plasma glucose 2.2 mmol/L) versus poorly controlled IDDM patients (5 +/- 1 pmol/L to 26 +/- 7 pmol/L) and healthy subjects (8 +/- 1 pmol/L to 56 +/- 13 pmol/L).
886 8931651 The plasma glucose threshold required for stimulation of beta-endorphin release was again lower in well-controlled IDDM versus poorly controlled IDDM patients (2.2 +/- 0.1 v 3.0 +/- 0.3 mmol/L) and healthy subjects (2.5 +/- 0.4 mmol/L, P < .05 between IDDM groups).
887 8931651 In conclusion, prolactin and beta-endorphin responses to a standardized hypoglycemic stimulus (plasma glucose, 2.2 mmol/L) are reduced and plasma glucose levels required to stimulate release of prolactin and beta-endorphin are lower in well-controlled IDDM compared with poorly controlled IDDM and healthy subjects.
888 8931651 Prolactin and beta-endorphin responses to hypoglycemia are reduced in well-controlled insulin-dependent diabetes mellitus.
889 8931651 Several pituitary hormones, including corticotropin (ACTH), growth hormone (GH), prolactin, and beta-endorphin (but not thyrotropin, follicle-stimulating hormone, or luteinizing hormone), are released in response to hypoglycemia in normal subjects.
890 8931651 In patients with insulin-dependent diabetes mellitus (IDDM), the degree of glycemic control is known to alter ACTH and GH responses to hypoglycemia.
891 8931651 The current study was performed to examine the effect of glycemic control on prolactin and beta-endorphin responses to hypoglycemia in subjects with IDDM.
892 8931651 The 10 diabetic subjects in good glycemic control (mean hemoglobin A1 [HbA1], 7.5% +/- 0.3%; normal range, 5.4% to 7.4%) were compared with the 10 poorly controlled patients (mean HbA1, 12.6% +/- 0.5%; P < .001 v well-controlled diabetic group).
893 8931651 During hypoglycemia, prolactin levels in the well-controlled diabetic group did not change (7 +/- 1 microgram/L at plasma glucose 5.0 mmol/L to 9 +/- 2 micrograms/L at plasma glucose 2.2 mmol/L), whereas prolactin levels increased markedly in the poorly controlled diabetic group (7 +/- 2 micrograms/L to 44 +/- 17 micrograms/L) and healthy volunteers (12 +/- 2 micrograms/L to 60 +/- 19 micrograms/L, P < .05 between IDDM groups).
894 8931651 The plasma glucose threshold required for stimulation of prolactin secretion was 2.2 +/- 0.1 mmol/L in well-controlled IDDM, 3.0 +/- 0.4 mmol/L in poorly controlled IDDM, and 2.4 +/- 0.1 mmol/L in healthy subjects (P < .05 between IDDM groups).
895 8931651 The increase in beta-endorphin levels was also attenuated in well-controlled IDDM patients (4 +/- 1 pmol/L at plasma glucose 5.0 mmol/L to 11 +/- 4 pmol/L at plasma glucose 2.2 mmol/L) versus poorly controlled IDDM patients (5 +/- 1 pmol/L to 26 +/- 7 pmol/L) and healthy subjects (8 +/- 1 pmol/L to 56 +/- 13 pmol/L).
896 8931651 The plasma glucose threshold required for stimulation of beta-endorphin release was again lower in well-controlled IDDM versus poorly controlled IDDM patients (2.2 +/- 0.1 v 3.0 +/- 0.3 mmol/L) and healthy subjects (2.5 +/- 0.4 mmol/L, P < .05 between IDDM groups).
897 8931651 In conclusion, prolactin and beta-endorphin responses to a standardized hypoglycemic stimulus (plasma glucose, 2.2 mmol/L) are reduced and plasma glucose levels required to stimulate release of prolactin and beta-endorphin are lower in well-controlled IDDM compared with poorly controlled IDDM and healthy subjects.
898 8931651 Prolactin and beta-endorphin responses to hypoglycemia are reduced in well-controlled insulin-dependent diabetes mellitus.
899 8931651 Several pituitary hormones, including corticotropin (ACTH), growth hormone (GH), prolactin, and beta-endorphin (but not thyrotropin, follicle-stimulating hormone, or luteinizing hormone), are released in response to hypoglycemia in normal subjects.
900 8931651 In patients with insulin-dependent diabetes mellitus (IDDM), the degree of glycemic control is known to alter ACTH and GH responses to hypoglycemia.
901 8931651 The current study was performed to examine the effect of glycemic control on prolactin and beta-endorphin responses to hypoglycemia in subjects with IDDM.
902 8931651 The 10 diabetic subjects in good glycemic control (mean hemoglobin A1 [HbA1], 7.5% +/- 0.3%; normal range, 5.4% to 7.4%) were compared with the 10 poorly controlled patients (mean HbA1, 12.6% +/- 0.5%; P < .001 v well-controlled diabetic group).
903 8931651 During hypoglycemia, prolactin levels in the well-controlled diabetic group did not change (7 +/- 1 microgram/L at plasma glucose 5.0 mmol/L to 9 +/- 2 micrograms/L at plasma glucose 2.2 mmol/L), whereas prolactin levels increased markedly in the poorly controlled diabetic group (7 +/- 2 micrograms/L to 44 +/- 17 micrograms/L) and healthy volunteers (12 +/- 2 micrograms/L to 60 +/- 19 micrograms/L, P < .05 between IDDM groups).
904 8931651 The plasma glucose threshold required for stimulation of prolactin secretion was 2.2 +/- 0.1 mmol/L in well-controlled IDDM, 3.0 +/- 0.4 mmol/L in poorly controlled IDDM, and 2.4 +/- 0.1 mmol/L in healthy subjects (P < .05 between IDDM groups).
905 8931651 The increase in beta-endorphin levels was also attenuated in well-controlled IDDM patients (4 +/- 1 pmol/L at plasma glucose 5.0 mmol/L to 11 +/- 4 pmol/L at plasma glucose 2.2 mmol/L) versus poorly controlled IDDM patients (5 +/- 1 pmol/L to 26 +/- 7 pmol/L) and healthy subjects (8 +/- 1 pmol/L to 56 +/- 13 pmol/L).
906 8931651 The plasma glucose threshold required for stimulation of beta-endorphin release was again lower in well-controlled IDDM versus poorly controlled IDDM patients (2.2 +/- 0.1 v 3.0 +/- 0.3 mmol/L) and healthy subjects (2.5 +/- 0.4 mmol/L, P < .05 between IDDM groups).
907 8931651 In conclusion, prolactin and beta-endorphin responses to a standardized hypoglycemic stimulus (plasma glucose, 2.2 mmol/L) are reduced and plasma glucose levels required to stimulate release of prolactin and beta-endorphin are lower in well-controlled IDDM compared with poorly controlled IDDM and healthy subjects.
908 8931651 Prolactin and beta-endorphin responses to hypoglycemia are reduced in well-controlled insulin-dependent diabetes mellitus.
909 8931651 Several pituitary hormones, including corticotropin (ACTH), growth hormone (GH), prolactin, and beta-endorphin (but not thyrotropin, follicle-stimulating hormone, or luteinizing hormone), are released in response to hypoglycemia in normal subjects.
910 8931651 In patients with insulin-dependent diabetes mellitus (IDDM), the degree of glycemic control is known to alter ACTH and GH responses to hypoglycemia.
911 8931651 The current study was performed to examine the effect of glycemic control on prolactin and beta-endorphin responses to hypoglycemia in subjects with IDDM.
912 8931651 The 10 diabetic subjects in good glycemic control (mean hemoglobin A1 [HbA1], 7.5% +/- 0.3%; normal range, 5.4% to 7.4%) were compared with the 10 poorly controlled patients (mean HbA1, 12.6% +/- 0.5%; P < .001 v well-controlled diabetic group).
913 8931651 During hypoglycemia, prolactin levels in the well-controlled diabetic group did not change (7 +/- 1 microgram/L at plasma glucose 5.0 mmol/L to 9 +/- 2 micrograms/L at plasma glucose 2.2 mmol/L), whereas prolactin levels increased markedly in the poorly controlled diabetic group (7 +/- 2 micrograms/L to 44 +/- 17 micrograms/L) and healthy volunteers (12 +/- 2 micrograms/L to 60 +/- 19 micrograms/L, P < .05 between IDDM groups).
914 8931651 The plasma glucose threshold required for stimulation of prolactin secretion was 2.2 +/- 0.1 mmol/L in well-controlled IDDM, 3.0 +/- 0.4 mmol/L in poorly controlled IDDM, and 2.4 +/- 0.1 mmol/L in healthy subjects (P < .05 between IDDM groups).
915 8931651 The increase in beta-endorphin levels was also attenuated in well-controlled IDDM patients (4 +/- 1 pmol/L at plasma glucose 5.0 mmol/L to 11 +/- 4 pmol/L at plasma glucose 2.2 mmol/L) versus poorly controlled IDDM patients (5 +/- 1 pmol/L to 26 +/- 7 pmol/L) and healthy subjects (8 +/- 1 pmol/L to 56 +/- 13 pmol/L).
916 8931651 The plasma glucose threshold required for stimulation of beta-endorphin release was again lower in well-controlled IDDM versus poorly controlled IDDM patients (2.2 +/- 0.1 v 3.0 +/- 0.3 mmol/L) and healthy subjects (2.5 +/- 0.4 mmol/L, P < .05 between IDDM groups).
917 8931651 In conclusion, prolactin and beta-endorphin responses to a standardized hypoglycemic stimulus (plasma glucose, 2.2 mmol/L) are reduced and plasma glucose levels required to stimulate release of prolactin and beta-endorphin are lower in well-controlled IDDM compared with poorly controlled IDDM and healthy subjects.
918 8939064 The genes at these loci include agouti, which encodes a molecule that antagonizes the binding of alpha melanocyte-stimulating hormone to its receptor; fat, which encodes carboxypeptidase E; tubby, which encodes a putative phosphodiesterase; obese, which encodes a circulating satiety protein; and diabetes, which encodes the receptor for the obese gene product.
919 8961238 These shared symptoms include elevated tumour necrosis factor-alpha, down-regulated interleukin-2 and interleukin-4 and depletion of lean body mass.
920 8961238 Furthermore, the following neuropeptides are dysregulated in both anorexia nervosa and cancer cachexia: vasoactive intestinal peptide, cholecystokinin, corticotropin-releasing factor, neuropeptide Y, peptide YY and beta-endorphin.
921 8983089 During the test and on a control day, heart rate, blood pressure, plasma ACTH, cortisol, catecholamines and prolactin were measured.
922 9019408 We show that in the Cpe(fat) mutant mouse lacking CPE, the pituitary prohormone, pro-opiomelanocortin, was missorted to the constitutive pathway and secreted in an unregulated manner.
923 9026270 In an attempt to define the hypothalamic-pituitary-adrenal (HPA) axis in non-insulin dependent diabetic rats (WBN/Kob), we measured plasma corticotropin releasing factor (CRF), as well as arginine vasopressin (AVP), ACTH, and corticosterone (B), CRF concentrations in the median eminence (ME), the remainder of the hypothalamus (rHY) and the neurointermediate lobe of the pituitary (NIL).
924 9054940 This region contains several potential candidate genes for obesity, including glucokinase regulatory protein (GCKR) and pro-opiomelanocortin (POMC).
925 9063651 Anterior pituitary function was tested by use of the combined anterior pituitary (CAP) function test, which consisted of sequential 30-sec intravenous injections of four hypothalamic releasing hormones, in the following order and doses: 1 microgram of corticotropin-releasing hormone (CRH)/kg, 1 microgram of growth hormone-releasing hormone (GHRH)/kg, 10 micrograms of gonadotropin-releasing hormone (GnRH)/kg, and 10 micrograms of thyrotropin-releasing hormone (TRH)/kg.
926 9063651 Plasma samples were assayed for adrenocorticotropin (ACTH), cortisol, GH, luteinizing hormone (LH), and prolactin (PRL) at multiple times for 120 min after injection.
927 9063651 In the CAP test and the haloperidol test, the peaks for the plasma concentrations of ACTH, cortisol, GH, LH, PRL, and alpha-MSH occurred within 45 min after injection.
928 9063651 At 2 and 10 wk after hypophysectomy, there were no responses of plasma GH, LH, PRL, and alpha-MSH to stimulation.
929 9063651 It is concluded that 1) stimulation of the anterior pituitary with multiple hypophysiotropic hormones, stimulation of the pars intermedia with a dopamine antagonist, and stimulation of the neurohypophysis with hypertonic saline do not cause side effects that would prohibit routine use, 2) in the routine stimulation of the anterior pituitary and the pars intermedia, blood sampling can be confined to the first 45 min, 3) the ACTH and cortisol responses to hypophysiotropic stimulation are the most sensitive indicators for residual pituitary function after hypophysectomy, 4) small islets of pituitary cells in the sella turcica, containing corticotropic cells, are the most likely source of the attenuated corticotropic response that may occur after hypophysectomy, and 5) residual AVP release from the hypothalamus after hypophysectomy is sufficient to prevent diabetes insipidus, despite the fact that the AVP response to hypertonic saline infusion is completely abolished.
930 9063651 Anterior pituitary function was tested by use of the combined anterior pituitary (CAP) function test, which consisted of sequential 30-sec intravenous injections of four hypothalamic releasing hormones, in the following order and doses: 1 microgram of corticotropin-releasing hormone (CRH)/kg, 1 microgram of growth hormone-releasing hormone (GHRH)/kg, 10 micrograms of gonadotropin-releasing hormone (GnRH)/kg, and 10 micrograms of thyrotropin-releasing hormone (TRH)/kg.
931 9063651 Plasma samples were assayed for adrenocorticotropin (ACTH), cortisol, GH, luteinizing hormone (LH), and prolactin (PRL) at multiple times for 120 min after injection.
932 9063651 In the CAP test and the haloperidol test, the peaks for the plasma concentrations of ACTH, cortisol, GH, LH, PRL, and alpha-MSH occurred within 45 min after injection.
933 9063651 At 2 and 10 wk after hypophysectomy, there were no responses of plasma GH, LH, PRL, and alpha-MSH to stimulation.
934 9063651 It is concluded that 1) stimulation of the anterior pituitary with multiple hypophysiotropic hormones, stimulation of the pars intermedia with a dopamine antagonist, and stimulation of the neurohypophysis with hypertonic saline do not cause side effects that would prohibit routine use, 2) in the routine stimulation of the anterior pituitary and the pars intermedia, blood sampling can be confined to the first 45 min, 3) the ACTH and cortisol responses to hypophysiotropic stimulation are the most sensitive indicators for residual pituitary function after hypophysectomy, 4) small islets of pituitary cells in the sella turcica, containing corticotropic cells, are the most likely source of the attenuated corticotropic response that may occur after hypophysectomy, and 5) residual AVP release from the hypothalamus after hypophysectomy is sufficient to prevent diabetes insipidus, despite the fact that the AVP response to hypertonic saline infusion is completely abolished.
935 9063651 Anterior pituitary function was tested by use of the combined anterior pituitary (CAP) function test, which consisted of sequential 30-sec intravenous injections of four hypothalamic releasing hormones, in the following order and doses: 1 microgram of corticotropin-releasing hormone (CRH)/kg, 1 microgram of growth hormone-releasing hormone (GHRH)/kg, 10 micrograms of gonadotropin-releasing hormone (GnRH)/kg, and 10 micrograms of thyrotropin-releasing hormone (TRH)/kg.
936 9063651 Plasma samples were assayed for adrenocorticotropin (ACTH), cortisol, GH, luteinizing hormone (LH), and prolactin (PRL) at multiple times for 120 min after injection.
937 9063651 In the CAP test and the haloperidol test, the peaks for the plasma concentrations of ACTH, cortisol, GH, LH, PRL, and alpha-MSH occurred within 45 min after injection.
938 9063651 At 2 and 10 wk after hypophysectomy, there were no responses of plasma GH, LH, PRL, and alpha-MSH to stimulation.
939 9063651 It is concluded that 1) stimulation of the anterior pituitary with multiple hypophysiotropic hormones, stimulation of the pars intermedia with a dopamine antagonist, and stimulation of the neurohypophysis with hypertonic saline do not cause side effects that would prohibit routine use, 2) in the routine stimulation of the anterior pituitary and the pars intermedia, blood sampling can be confined to the first 45 min, 3) the ACTH and cortisol responses to hypophysiotropic stimulation are the most sensitive indicators for residual pituitary function after hypophysectomy, 4) small islets of pituitary cells in the sella turcica, containing corticotropic cells, are the most likely source of the attenuated corticotropic response that may occur after hypophysectomy, and 5) residual AVP release from the hypothalamus after hypophysectomy is sufficient to prevent diabetes insipidus, despite the fact that the AVP response to hypertonic saline infusion is completely abolished.
940 9063651 Anterior pituitary function was tested by use of the combined anterior pituitary (CAP) function test, which consisted of sequential 30-sec intravenous injections of four hypothalamic releasing hormones, in the following order and doses: 1 microgram of corticotropin-releasing hormone (CRH)/kg, 1 microgram of growth hormone-releasing hormone (GHRH)/kg, 10 micrograms of gonadotropin-releasing hormone (GnRH)/kg, and 10 micrograms of thyrotropin-releasing hormone (TRH)/kg.
941 9063651 Plasma samples were assayed for adrenocorticotropin (ACTH), cortisol, GH, luteinizing hormone (LH), and prolactin (PRL) at multiple times for 120 min after injection.
942 9063651 In the CAP test and the haloperidol test, the peaks for the plasma concentrations of ACTH, cortisol, GH, LH, PRL, and alpha-MSH occurred within 45 min after injection.
943 9063651 At 2 and 10 wk after hypophysectomy, there were no responses of plasma GH, LH, PRL, and alpha-MSH to stimulation.
944 9063651 It is concluded that 1) stimulation of the anterior pituitary with multiple hypophysiotropic hormones, stimulation of the pars intermedia with a dopamine antagonist, and stimulation of the neurohypophysis with hypertonic saline do not cause side effects that would prohibit routine use, 2) in the routine stimulation of the anterior pituitary and the pars intermedia, blood sampling can be confined to the first 45 min, 3) the ACTH and cortisol responses to hypophysiotropic stimulation are the most sensitive indicators for residual pituitary function after hypophysectomy, 4) small islets of pituitary cells in the sella turcica, containing corticotropic cells, are the most likely source of the attenuated corticotropic response that may occur after hypophysectomy, and 5) residual AVP release from the hypothalamus after hypophysectomy is sufficient to prevent diabetes insipidus, despite the fact that the AVP response to hypertonic saline infusion is completely abolished.
945 9088893 In view of recent findings of an attenuated response of the hypothalamic-pituitary-adrenal (HPA) system in patients with atopic eczema during a human corticotropin-releasing hormone (hCRH) challenge paradigm fourteen consecutive non-specifically trained in-patients with atopic eczema (8 men, 6 women) and an age-matched control group (8 men, 6 women) performed exhausting incremental graded bicycle exercise to evaluate cortisol, adrenocorticotropin (ACTH), beta-endorphin, epinephrine and norepinephrine releases induced by physical stress.
946 9088893 In contrast to the challenge with exogenous hCRH no substantial difference in the net responses of ACTH and cortisol could be detected between patients with atopic eczema and controls using the physical stress paradigm.
947 9088893 In view of recent findings of an attenuated response of the hypothalamic-pituitary-adrenal (HPA) system in patients with atopic eczema during a human corticotropin-releasing hormone (hCRH) challenge paradigm fourteen consecutive non-specifically trained in-patients with atopic eczema (8 men, 6 women) and an age-matched control group (8 men, 6 women) performed exhausting incremental graded bicycle exercise to evaluate cortisol, adrenocorticotropin (ACTH), beta-endorphin, epinephrine and norepinephrine releases induced by physical stress.
948 9088893 In contrast to the challenge with exogenous hCRH no substantial difference in the net responses of ACTH and cortisol could be detected between patients with atopic eczema and controls using the physical stress paradigm.
949 9096167 In vitro, in heterologous cells expressing either rat MC3-R or MC4-R, the major MCR subtypes expressed in brain, SHU-9119 showed no intrinsic agonism, but it inhibited alpha-MSH-induced cAMP accumulation (IC50 = 0.48 +/- 0.19 and 0.41 +/- 0.28 nM, respectively) and [125I]-[Nle4,DPhe7]-alpha-MSH binding (IC50 = 1.0 +/- 0.1 and 0.9 +/- 0.3 nM, respectively).
950 9100602 Effect of plasma osmolality on pituitary-adrenal responses to corticotropin-releasing hormone and atrial natriuretic peptide changes in central diabetes insipidus.
951 9100602 The objective of the present study was to examine the effect of changes in plasma osmolality (pOsm) on the responses of the pituitary-adrenal axis to CRH and atrial natriuretic peptide (ANP) release in patients with central diabetes insipidus (DI).
952 9100602 The lower ANP secretion in DI patients corroborates the importance of neurohypophyseal hormones in ANP regulation.
953 9100602 The latter group presented a higher ACTH response than controls during stimulation with hCRH alone [area under the curve (AUC) 1138 +/- 99 vs. 709 +/- 62 pmol.L/min] and hCRH/5% NaCl (AUC 1602 +/- 209 vs. 1158 +/- 187 pmol.L.min).
954 9100602 The highest ACTH and cortisol responses to hCRH in both groups were obtained with hCRH/5% NaCl.
955 9100602 There was a significant correlation between mean pOsm and ACTH response to hCRH (r = 0.62).
956 9100602 These data indicate that the acute increases in pOsm augmented the ACTH and cortisol responses to hCRH that involve other factors besides magnocellular AVP.
957 9100602 Effect of plasma osmolality on pituitary-adrenal responses to corticotropin-releasing hormone and atrial natriuretic peptide changes in central diabetes insipidus.
958 9100602 The objective of the present study was to examine the effect of changes in plasma osmolality (pOsm) on the responses of the pituitary-adrenal axis to CRH and atrial natriuretic peptide (ANP) release in patients with central diabetes insipidus (DI).
959 9100602 The lower ANP secretion in DI patients corroborates the importance of neurohypophyseal hormones in ANP regulation.
960 9100602 The latter group presented a higher ACTH response than controls during stimulation with hCRH alone [area under the curve (AUC) 1138 +/- 99 vs. 709 +/- 62 pmol.L/min] and hCRH/5% NaCl (AUC 1602 +/- 209 vs. 1158 +/- 187 pmol.L.min).
961 9100602 The highest ACTH and cortisol responses to hCRH in both groups were obtained with hCRH/5% NaCl.
962 9100602 There was a significant correlation between mean pOsm and ACTH response to hCRH (r = 0.62).
963 9100602 These data indicate that the acute increases in pOsm augmented the ACTH and cortisol responses to hCRH that involve other factors besides magnocellular AVP.
964 9100602 Effect of plasma osmolality on pituitary-adrenal responses to corticotropin-releasing hormone and atrial natriuretic peptide changes in central diabetes insipidus.
965 9100602 The objective of the present study was to examine the effect of changes in plasma osmolality (pOsm) on the responses of the pituitary-adrenal axis to CRH and atrial natriuretic peptide (ANP) release in patients with central diabetes insipidus (DI).
966 9100602 The lower ANP secretion in DI patients corroborates the importance of neurohypophyseal hormones in ANP regulation.
967 9100602 The latter group presented a higher ACTH response than controls during stimulation with hCRH alone [area under the curve (AUC) 1138 +/- 99 vs. 709 +/- 62 pmol.L/min] and hCRH/5% NaCl (AUC 1602 +/- 209 vs. 1158 +/- 187 pmol.L.min).
968 9100602 The highest ACTH and cortisol responses to hCRH in both groups were obtained with hCRH/5% NaCl.
969 9100602 There was a significant correlation between mean pOsm and ACTH response to hCRH (r = 0.62).
970 9100602 These data indicate that the acute increases in pOsm augmented the ACTH and cortisol responses to hCRH that involve other factors besides magnocellular AVP.
971 9100602 Effect of plasma osmolality on pituitary-adrenal responses to corticotropin-releasing hormone and atrial natriuretic peptide changes in central diabetes insipidus.
972 9100602 The objective of the present study was to examine the effect of changes in plasma osmolality (pOsm) on the responses of the pituitary-adrenal axis to CRH and atrial natriuretic peptide (ANP) release in patients with central diabetes insipidus (DI).
973 9100602 The lower ANP secretion in DI patients corroborates the importance of neurohypophyseal hormones in ANP regulation.
974 9100602 The latter group presented a higher ACTH response than controls during stimulation with hCRH alone [area under the curve (AUC) 1138 +/- 99 vs. 709 +/- 62 pmol.L/min] and hCRH/5% NaCl (AUC 1602 +/- 209 vs. 1158 +/- 187 pmol.L.min).
975 9100602 The highest ACTH and cortisol responses to hCRH in both groups were obtained with hCRH/5% NaCl.
976 9100602 There was a significant correlation between mean pOsm and ACTH response to hCRH (r = 0.62).
977 9100602 These data indicate that the acute increases in pOsm augmented the ACTH and cortisol responses to hCRH that involve other factors besides magnocellular AVP.
978 9134049 Insulin-dependent diabetes mellitus (IDDM) occurs as a consequence of autoimmune destruction of the insulin-producing pancreatic beta-cells.
979 9134049 Although progress has been made in the field of islet transplantation, an appealing alternative strategy for beta-cell replacement therapy for IDDM is to target insulin expression to non-islet cells.
980 9134049 We have recently generated transgenic nonobese diabetic (NOD) mice in which insulin gene expression was targeted to proopiomelanocortin (POMC)-expressing cells of the intermediate lobe (IL) of the pituitary.
981 9134049 We have shown that POMC-expressing IL pituitary cells secreted large amounts of mature insulin, similar to islet beta-cells.
982 9134049 These features are highly advantageous in the transplantation setting and demonstrate the considerable potential of these non-islet cell types for insulin-gene delivery in IDDM.
983 9134049 Insulin-dependent diabetes mellitus (IDDM) occurs as a consequence of autoimmune destruction of the insulin-producing pancreatic beta-cells.
984 9134049 Although progress has been made in the field of islet transplantation, an appealing alternative strategy for beta-cell replacement therapy for IDDM is to target insulin expression to non-islet cells.
985 9134049 We have recently generated transgenic nonobese diabetic (NOD) mice in which insulin gene expression was targeted to proopiomelanocortin (POMC)-expressing cells of the intermediate lobe (IL) of the pituitary.
986 9134049 We have shown that POMC-expressing IL pituitary cells secreted large amounts of mature insulin, similar to islet beta-cells.
987 9134049 These features are highly advantageous in the transplantation setting and demonstrate the considerable potential of these non-islet cell types for insulin-gene delivery in IDDM.
988 9137936 Corticotropin-releasing factor (CRF) is the primary physiological regulator of basal and stress-induced release of ACTH, beta-endorphin and other POMC-derived peptides from the pituitary and plays a major role in the brain and periphery in coordinating endocrine, electrophysiological, autonomic, behavioral and immune responses to stress.
989 9137936 This review summarizes four decades of research beginning with the search for the factor that governs the release of ACTH and getting to the recent findings including the successful cloning of different receptor subtypes and the discovery of a new endogenous CRF-related ligand.
990 9137936 Corticotropin-releasing factor (CRF) is the primary physiological regulator of basal and stress-induced release of ACTH, beta-endorphin and other POMC-derived peptides from the pituitary and plays a major role in the brain and periphery in coordinating endocrine, electrophysiological, autonomic, behavioral and immune responses to stress.
991 9137936 This review summarizes four decades of research beginning with the search for the factor that governs the release of ACTH and getting to the recent findings including the successful cloning of different receptor subtypes and the discovery of a new endogenous CRF-related ligand.
992 9144234 Intracellular misrouting and abnormal secretion of adrenocorticotropin and growth hormone in cpefat mice associated with a carboxypeptidase E mutation.
993 9144234 Because studies have identified membrane carboxypeptidase E as a sorting receptor for targeting prohormones to the regulated secretory pathway for processing and secretion, the intracellular routing and secretion of pro-opiomelanocortin/adrenocorticotropin and growth hormone from anterior pituitary cells were investigated in Cpefat mice.
994 9144234 Furthermore, pro-opiomelanocortin was secreted constitutively at high levels, showing no response to stimulation by corticotropin-releasing hormone.
995 9144234 These data provide evidence that the lack of carboxypeptidase E, the sorting receptor, results in the intracellular misrouting and secretion of pro-opiomelanocortin and growth hormone via the constitutive pathway in the pituitary of Cpefat mice.
996 9144234 Intracellular misrouting and abnormal secretion of adrenocorticotropin and growth hormone in cpefat mice associated with a carboxypeptidase E mutation.
997 9144234 Because studies have identified membrane carboxypeptidase E as a sorting receptor for targeting prohormones to the regulated secretory pathway for processing and secretion, the intracellular routing and secretion of pro-opiomelanocortin/adrenocorticotropin and growth hormone from anterior pituitary cells were investigated in Cpefat mice.
998 9144234 Furthermore, pro-opiomelanocortin was secreted constitutively at high levels, showing no response to stimulation by corticotropin-releasing hormone.
999 9144234 These data provide evidence that the lack of carboxypeptidase E, the sorting receptor, results in the intracellular misrouting and secretion of pro-opiomelanocortin and growth hormone via the constitutive pathway in the pituitary of Cpefat mice.
1000 9144234 Intracellular misrouting and abnormal secretion of adrenocorticotropin and growth hormone in cpefat mice associated with a carboxypeptidase E mutation.
1001 9144234 Because studies have identified membrane carboxypeptidase E as a sorting receptor for targeting prohormones to the regulated secretory pathway for processing and secretion, the intracellular routing and secretion of pro-opiomelanocortin/adrenocorticotropin and growth hormone from anterior pituitary cells were investigated in Cpefat mice.
1002 9144234 Furthermore, pro-opiomelanocortin was secreted constitutively at high levels, showing no response to stimulation by corticotropin-releasing hormone.
1003 9144234 These data provide evidence that the lack of carboxypeptidase E, the sorting receptor, results in the intracellular misrouting and secretion of pro-opiomelanocortin and growth hormone via the constitutive pathway in the pituitary of Cpefat mice.
1004 9144234 Intracellular misrouting and abnormal secretion of adrenocorticotropin and growth hormone in cpefat mice associated with a carboxypeptidase E mutation.
1005 9144234 Because studies have identified membrane carboxypeptidase E as a sorting receptor for targeting prohormones to the regulated secretory pathway for processing and secretion, the intracellular routing and secretion of pro-opiomelanocortin/adrenocorticotropin and growth hormone from anterior pituitary cells were investigated in Cpefat mice.
1006 9144234 Furthermore, pro-opiomelanocortin was secreted constitutively at high levels, showing no response to stimulation by corticotropin-releasing hormone.
1007 9144234 These data provide evidence that the lack of carboxypeptidase E, the sorting receptor, results in the intracellular misrouting and secretion of pro-opiomelanocortin and growth hormone via the constitutive pathway in the pituitary of Cpefat mice.
1008 9200662 The crucial role of glucocorticoids in obesity and insulin resistance and the actions of the OB protein leptin on the hypothalamic-pituitary-adrenal (HPA) axis suggest that there is an important interaction of leptin with the glucocorticoid system.
1009 9200662 The accumulation of P450 17alpha mRNA following incubation with ACTH (10 nmol/l) and leptin (10-1,000 ng/ml) was analyzed by Northern blot.
1010 9200662 Addition of OB protein (10-1,000 ng/ml) led to a dose-dependent reduction of ACTH-stimulated cytochrome P450 17alpha mRNA accumulation (from 80 to 45%), suggesting that leptin regulates adrenal steroidogenesis at the transcriptional level.
1011 9218248 MCR are also found in melanocytic cells and adrenal cortical cells, the classical targets for alpha-MSH and ACTH, respectively, in myelogenous and lymphoid tissues, and in various endocrine and exocrine glands, adipocytes, and in autonomic ganglia.
1012 9218248 A group of five G-protein-associated MCR subtypes, each of which is positively coupled to adenylate cyclase, has been identified.
1013 9218248 Among these, the adrenal ACTH receptor (MC2-R) is selectively activated by ACTH.
1014 9218248 In contrast, the other MCR subtypes (MC1-R, MC3-R, MC4-R, MC5-R) recognize a common group of ligands that includes various forms of MSH as well as ACTH; nevertheless they do exhibit important differences in ligand selectivity.
1015 9218248 Moreover, spontaneous dominant mutations of the agouti gene in several strains of mice lead to its ubiquitous overexpression and produces not only yellow coat color, but also obesity and insulin resistance, perhaps as a result of its antagonism of other MCR subtypes.
1016 9218248 MCR are also found in melanocytic cells and adrenal cortical cells, the classical targets for alpha-MSH and ACTH, respectively, in myelogenous and lymphoid tissues, and in various endocrine and exocrine glands, adipocytes, and in autonomic ganglia.
1017 9218248 A group of five G-protein-associated MCR subtypes, each of which is positively coupled to adenylate cyclase, has been identified.
1018 9218248 Among these, the adrenal ACTH receptor (MC2-R) is selectively activated by ACTH.
1019 9218248 In contrast, the other MCR subtypes (MC1-R, MC3-R, MC4-R, MC5-R) recognize a common group of ligands that includes various forms of MSH as well as ACTH; nevertheless they do exhibit important differences in ligand selectivity.
1020 9218248 Moreover, spontaneous dominant mutations of the agouti gene in several strains of mice lead to its ubiquitous overexpression and produces not only yellow coat color, but also obesity and insulin resistance, perhaps as a result of its antagonism of other MCR subtypes.
1021 9218248 MCR are also found in melanocytic cells and adrenal cortical cells, the classical targets for alpha-MSH and ACTH, respectively, in myelogenous and lymphoid tissues, and in various endocrine and exocrine glands, adipocytes, and in autonomic ganglia.
1022 9218248 A group of five G-protein-associated MCR subtypes, each of which is positively coupled to adenylate cyclase, has been identified.
1023 9218248 Among these, the adrenal ACTH receptor (MC2-R) is selectively activated by ACTH.
1024 9218248 In contrast, the other MCR subtypes (MC1-R, MC3-R, MC4-R, MC5-R) recognize a common group of ligands that includes various forms of MSH as well as ACTH; nevertheless they do exhibit important differences in ligand selectivity.
1025 9218248 Moreover, spontaneous dominant mutations of the agouti gene in several strains of mice lead to its ubiquitous overexpression and produces not only yellow coat color, but also obesity and insulin resistance, perhaps as a result of its antagonism of other MCR subtypes.
1026 9227842 Effect of posterior pituitary denervation (PPD) on prolactin (PRL) and alpha-melanocyte-stimulating hormone (alpha-MSH) secretion of lactating rats.
1027 9227842 Denervation of the PP (PPD) is an effective method for having a selective lesion of the innervation of PP, indeed, PPD results in a disappearance of neurosecretory materials from NL and tyrosine hydroxylase (TH) immunoreactivity from IL, leaving blood supply of all three lobes intact.
1028 9227842 PPD blocks separation-induced depletion but only attenuates suckling induced release of PRL.
1029 9227842 Lack of the separation-induced depression in plasma PRL of PPD animals can be partially restored by normalizing the diabetes insipidus with treatment of a vasopressin analogue, 1-desamino-8-D-arginine-vasopressin (dDAVP).
1030 9227842 In contrast, dDAVP, neither alone nor in combination with oxytocin (OXY), can change PPD-induced elevation of plasma alpha-MSH as well as attenuation of PRL response induced by suckling.
1031 9227842 It is concluded that: (1) contribution of the THDA system parallel to the confirmed role in the regulation of alpha-MSH seems to be crucial for the depletion of plasma PRL induced by separation but not for the elevation due to suckling stimulus, (2) intact hypothalamic innervations of both NL and IL, regulating water intake and the secretion of alpha-MSH, respectively, are necessary for normal secretory responses of AL during lactation, (3) as well as for the presence of PRF activity in PP, (4) which does not solely responsible for suckling-induced PRL release.
1032 9227842 Effect of posterior pituitary denervation (PPD) on prolactin (PRL) and alpha-melanocyte-stimulating hormone (alpha-MSH) secretion of lactating rats.
1033 9227842 Denervation of the PP (PPD) is an effective method for having a selective lesion of the innervation of PP, indeed, PPD results in a disappearance of neurosecretory materials from NL and tyrosine hydroxylase (TH) immunoreactivity from IL, leaving blood supply of all three lobes intact.
1034 9227842 PPD blocks separation-induced depletion but only attenuates suckling induced release of PRL.
1035 9227842 Lack of the separation-induced depression in plasma PRL of PPD animals can be partially restored by normalizing the diabetes insipidus with treatment of a vasopressin analogue, 1-desamino-8-D-arginine-vasopressin (dDAVP).
1036 9227842 In contrast, dDAVP, neither alone nor in combination with oxytocin (OXY), can change PPD-induced elevation of plasma alpha-MSH as well as attenuation of PRL response induced by suckling.
1037 9227842 It is concluded that: (1) contribution of the THDA system parallel to the confirmed role in the regulation of alpha-MSH seems to be crucial for the depletion of plasma PRL induced by separation but not for the elevation due to suckling stimulus, (2) intact hypothalamic innervations of both NL and IL, regulating water intake and the secretion of alpha-MSH, respectively, are necessary for normal secretory responses of AL during lactation, (3) as well as for the presence of PRF activity in PP, (4) which does not solely responsible for suckling-induced PRL release.
1038 9227842 Effect of posterior pituitary denervation (PPD) on prolactin (PRL) and alpha-melanocyte-stimulating hormone (alpha-MSH) secretion of lactating rats.
1039 9227842 Denervation of the PP (PPD) is an effective method for having a selective lesion of the innervation of PP, indeed, PPD results in a disappearance of neurosecretory materials from NL and tyrosine hydroxylase (TH) immunoreactivity from IL, leaving blood supply of all three lobes intact.
1040 9227842 PPD blocks separation-induced depletion but only attenuates suckling induced release of PRL.
1041 9227842 Lack of the separation-induced depression in plasma PRL of PPD animals can be partially restored by normalizing the diabetes insipidus with treatment of a vasopressin analogue, 1-desamino-8-D-arginine-vasopressin (dDAVP).
1042 9227842 In contrast, dDAVP, neither alone nor in combination with oxytocin (OXY), can change PPD-induced elevation of plasma alpha-MSH as well as attenuation of PRL response induced by suckling.
1043 9227842 It is concluded that: (1) contribution of the THDA system parallel to the confirmed role in the regulation of alpha-MSH seems to be crucial for the depletion of plasma PRL induced by separation but not for the elevation due to suckling stimulus, (2) intact hypothalamic innervations of both NL and IL, regulating water intake and the secretion of alpha-MSH, respectively, are necessary for normal secretory responses of AL during lactation, (3) as well as for the presence of PRF activity in PP, (4) which does not solely responsible for suckling-induced PRL release.
1044 9228515 In order to clarify the effect of exogenous corticotropin-releasing factor (CRF) on catecholaminergic and serotoninergic system activity in the mediobasal hypothalamus-median eminence (MBH-ME) of ewes the changes in extracellular levels of noradrenaline (NA) and serotonin (5HT), and main metabolites of monoamines, 4-hydroxy-3-methoxyphenylglycol (MHPG), 3,4-dihydroxy-phenylacetic acid (DOPAC), homovanilic acid (HVA), and 5-hydroxy-indolo-3-acetic acid (5-HIAA) were quantified in the perfusates collected from MBH-ME.
1045 9228515 CRF induced a rise in extracellular concentration of NA and 5-HT only in the estrous ewes prior to a preovulatory LH surge.
1046 9228515 CRF treatment caused a heterogenous effect on extra-cellular concentrations of 5-HT in ewes during the preovulatory LH surge.
1047 9228515 It is suggested that: 1) the responses of monoaminergic systems activity in the MBH-ME to CRF in large degree is dependent upon physiological state of ewes and 2) in some endocrinological phases CRF may affect LHRH and other hypothalamic hormone secretion indirectly by altering monoaminergic system activity in the MBH-ME.
1048 9278579 The secreted agouti protein antagonizes the binding of the alpha-melanocyte-stimulating hormone to its receptor (melanocortin 1 receptor) on the surface of hair bulb melanocytes, causing alterations in intracellular cAMP levels.
1049 9328209 In this study, we observed that liberators of NO such as S-nitroso-N-acetyl-penicillamine (SNAP), sodium nitroprusside (Snp) and spermine nonoate (SNO) could significantly inhibit angiotensin II (AII) and ACTH-induced aldosterone synthesis in isolated rat and cultured human adrenal glomerulosa cells.
1050 9354856 Corticosterone response to BrdU was partially reversed by the ACTH-receptor antagonist corticotropin-inhibiting peptide (CIP), and aldosterone response by the arginine vasopressin (AVP) V1-receptor antagonist [amino-Pen1, Val4,D-Arg8]-vasopressin (AVP-A).
1051 9354856 The angiotensin-II (ANG-II)-receptor antagonist [Sar1, Val5, Ala8]-ANG-II (SAR) was ineffective.
1052 9392508 Leptin increases hypothalamic pro-opiomelanocortin mRNA expression in the rostral arcuate nucleus.
1053 9392508 Melanocortins are peptides, cleaved from the pro-opiomelanocortin (POMC) precursor, that act in the brain to reduce food intake and are potential mediators of leptin action.
1054 9392508 To test the hypothesis that these POMC neurons are regulated by leptin, we used in situ hybridization to determine whether reduced leptin signaling (as occurs in fasting), genetic leptin deficiency (in obese ob/ob mice), or genetic leptin resistance (in obese db/db mice) lower expression of POMC mRNA.
1055 9392508 We further hypothesized that leptin administration would raise hypothalamic POMC mRNA levels in leptin-deficient animals, but not in mice with defective leptin receptors.
1056 9392508 Five daily intraperitoneal injections of recombinant murine leptin (150 microg) raised levels of POMC mRNA in the rostral arcuate nucleus of ob/ob mice (n = 8) by 73% over saline-treated ob/ob control values (n = 8; P < 0.01), but was without effect in db/db mice (n = 6).
1057 9392508 In normal rats, two injections of a low dose of leptin (3.5 microg) into the third cerebral ventricle (n = 15) during a 40-h period of fasting also increased POMC mRNA levels in the rostral arcuate nucleus to values 39% greater than those in vehicle-treated controls (n = 14; P = 0.02).
1058 9392508 We conclude that reduced central nervous system leptin signaling owing to fasting or to genetic defects in leptin or its receptor lower POMC mRNA levels in the rostral arcuate nucleus.
1059 9392508 The finding that leptin reverses this effect in ob/ob, but not db/db, mice suggests that leptin stimulates arcuate nucleus POMC gene expression via a pathway involving leptin receptors.
1060 9392508 Leptin increases hypothalamic pro-opiomelanocortin mRNA expression in the rostral arcuate nucleus.
1061 9392508 Melanocortins are peptides, cleaved from the pro-opiomelanocortin (POMC) precursor, that act in the brain to reduce food intake and are potential mediators of leptin action.
1062 9392508 To test the hypothesis that these POMC neurons are regulated by leptin, we used in situ hybridization to determine whether reduced leptin signaling (as occurs in fasting), genetic leptin deficiency (in obese ob/ob mice), or genetic leptin resistance (in obese db/db mice) lower expression of POMC mRNA.
1063 9392508 We further hypothesized that leptin administration would raise hypothalamic POMC mRNA levels in leptin-deficient animals, but not in mice with defective leptin receptors.
1064 9392508 Five daily intraperitoneal injections of recombinant murine leptin (150 microg) raised levels of POMC mRNA in the rostral arcuate nucleus of ob/ob mice (n = 8) by 73% over saline-treated ob/ob control values (n = 8; P < 0.01), but was without effect in db/db mice (n = 6).
1065 9392508 In normal rats, two injections of a low dose of leptin (3.5 microg) into the third cerebral ventricle (n = 15) during a 40-h period of fasting also increased POMC mRNA levels in the rostral arcuate nucleus to values 39% greater than those in vehicle-treated controls (n = 14; P = 0.02).
1066 9392508 We conclude that reduced central nervous system leptin signaling owing to fasting or to genetic defects in leptin or its receptor lower POMC mRNA levels in the rostral arcuate nucleus.
1067 9392508 The finding that leptin reverses this effect in ob/ob, but not db/db, mice suggests that leptin stimulates arcuate nucleus POMC gene expression via a pathway involving leptin receptors.
1068 9392508 Leptin increases hypothalamic pro-opiomelanocortin mRNA expression in the rostral arcuate nucleus.
1069 9392508 Melanocortins are peptides, cleaved from the pro-opiomelanocortin (POMC) precursor, that act in the brain to reduce food intake and are potential mediators of leptin action.
1070 9392508 To test the hypothesis that these POMC neurons are regulated by leptin, we used in situ hybridization to determine whether reduced leptin signaling (as occurs in fasting), genetic leptin deficiency (in obese ob/ob mice), or genetic leptin resistance (in obese db/db mice) lower expression of POMC mRNA.
1071 9392508 We further hypothesized that leptin administration would raise hypothalamic POMC mRNA levels in leptin-deficient animals, but not in mice with defective leptin receptors.
1072 9392508 Five daily intraperitoneal injections of recombinant murine leptin (150 microg) raised levels of POMC mRNA in the rostral arcuate nucleus of ob/ob mice (n = 8) by 73% over saline-treated ob/ob control values (n = 8; P < 0.01), but was without effect in db/db mice (n = 6).
1073 9392508 In normal rats, two injections of a low dose of leptin (3.5 microg) into the third cerebral ventricle (n = 15) during a 40-h period of fasting also increased POMC mRNA levels in the rostral arcuate nucleus to values 39% greater than those in vehicle-treated controls (n = 14; P = 0.02).
1074 9392508 We conclude that reduced central nervous system leptin signaling owing to fasting or to genetic defects in leptin or its receptor lower POMC mRNA levels in the rostral arcuate nucleus.
1075 9392508 The finding that leptin reverses this effect in ob/ob, but not db/db, mice suggests that leptin stimulates arcuate nucleus POMC gene expression via a pathway involving leptin receptors.
1076 9392508 Leptin increases hypothalamic pro-opiomelanocortin mRNA expression in the rostral arcuate nucleus.
1077 9392508 Melanocortins are peptides, cleaved from the pro-opiomelanocortin (POMC) precursor, that act in the brain to reduce food intake and are potential mediators of leptin action.
1078 9392508 To test the hypothesis that these POMC neurons are regulated by leptin, we used in situ hybridization to determine whether reduced leptin signaling (as occurs in fasting), genetic leptin deficiency (in obese ob/ob mice), or genetic leptin resistance (in obese db/db mice) lower expression of POMC mRNA.
1079 9392508 We further hypothesized that leptin administration would raise hypothalamic POMC mRNA levels in leptin-deficient animals, but not in mice with defective leptin receptors.
1080 9392508 Five daily intraperitoneal injections of recombinant murine leptin (150 microg) raised levels of POMC mRNA in the rostral arcuate nucleus of ob/ob mice (n = 8) by 73% over saline-treated ob/ob control values (n = 8; P < 0.01), but was without effect in db/db mice (n = 6).
1081 9392508 In normal rats, two injections of a low dose of leptin (3.5 microg) into the third cerebral ventricle (n = 15) during a 40-h period of fasting also increased POMC mRNA levels in the rostral arcuate nucleus to values 39% greater than those in vehicle-treated controls (n = 14; P = 0.02).
1082 9392508 We conclude that reduced central nervous system leptin signaling owing to fasting or to genetic defects in leptin or its receptor lower POMC mRNA levels in the rostral arcuate nucleus.
1083 9392508 The finding that leptin reverses this effect in ob/ob, but not db/db, mice suggests that leptin stimulates arcuate nucleus POMC gene expression via a pathway involving leptin receptors.
1084 9392508 Leptin increases hypothalamic pro-opiomelanocortin mRNA expression in the rostral arcuate nucleus.
1085 9392508 Melanocortins are peptides, cleaved from the pro-opiomelanocortin (POMC) precursor, that act in the brain to reduce food intake and are potential mediators of leptin action.
1086 9392508 To test the hypothesis that these POMC neurons are regulated by leptin, we used in situ hybridization to determine whether reduced leptin signaling (as occurs in fasting), genetic leptin deficiency (in obese ob/ob mice), or genetic leptin resistance (in obese db/db mice) lower expression of POMC mRNA.
1087 9392508 We further hypothesized that leptin administration would raise hypothalamic POMC mRNA levels in leptin-deficient animals, but not in mice with defective leptin receptors.
1088 9392508 Five daily intraperitoneal injections of recombinant murine leptin (150 microg) raised levels of POMC mRNA in the rostral arcuate nucleus of ob/ob mice (n = 8) by 73% over saline-treated ob/ob control values (n = 8; P < 0.01), but was without effect in db/db mice (n = 6).
1089 9392508 In normal rats, two injections of a low dose of leptin (3.5 microg) into the third cerebral ventricle (n = 15) during a 40-h period of fasting also increased POMC mRNA levels in the rostral arcuate nucleus to values 39% greater than those in vehicle-treated controls (n = 14; P = 0.02).
1090 9392508 We conclude that reduced central nervous system leptin signaling owing to fasting or to genetic defects in leptin or its receptor lower POMC mRNA levels in the rostral arcuate nucleus.
1091 9392508 The finding that leptin reverses this effect in ob/ob, but not db/db, mice suggests that leptin stimulates arcuate nucleus POMC gene expression via a pathway involving leptin receptors.
1092 9392508 Leptin increases hypothalamic pro-opiomelanocortin mRNA expression in the rostral arcuate nucleus.
1093 9392508 Melanocortins are peptides, cleaved from the pro-opiomelanocortin (POMC) precursor, that act in the brain to reduce food intake and are potential mediators of leptin action.
1094 9392508 To test the hypothesis that these POMC neurons are regulated by leptin, we used in situ hybridization to determine whether reduced leptin signaling (as occurs in fasting), genetic leptin deficiency (in obese ob/ob mice), or genetic leptin resistance (in obese db/db mice) lower expression of POMC mRNA.
1095 9392508 We further hypothesized that leptin administration would raise hypothalamic POMC mRNA levels in leptin-deficient animals, but not in mice with defective leptin receptors.
1096 9392508 Five daily intraperitoneal injections of recombinant murine leptin (150 microg) raised levels of POMC mRNA in the rostral arcuate nucleus of ob/ob mice (n = 8) by 73% over saline-treated ob/ob control values (n = 8; P < 0.01), but was without effect in db/db mice (n = 6).
1097 9392508 In normal rats, two injections of a low dose of leptin (3.5 microg) into the third cerebral ventricle (n = 15) during a 40-h period of fasting also increased POMC mRNA levels in the rostral arcuate nucleus to values 39% greater than those in vehicle-treated controls (n = 14; P = 0.02).
1098 9392508 We conclude that reduced central nervous system leptin signaling owing to fasting or to genetic defects in leptin or its receptor lower POMC mRNA levels in the rostral arcuate nucleus.
1099 9392508 The finding that leptin reverses this effect in ob/ob, but not db/db, mice suggests that leptin stimulates arcuate nucleus POMC gene expression via a pathway involving leptin receptors.
1100 9392508 Leptin increases hypothalamic pro-opiomelanocortin mRNA expression in the rostral arcuate nucleus.
1101 9392508 Melanocortins are peptides, cleaved from the pro-opiomelanocortin (POMC) precursor, that act in the brain to reduce food intake and are potential mediators of leptin action.
1102 9392508 To test the hypothesis that these POMC neurons are regulated by leptin, we used in situ hybridization to determine whether reduced leptin signaling (as occurs in fasting), genetic leptin deficiency (in obese ob/ob mice), or genetic leptin resistance (in obese db/db mice) lower expression of POMC mRNA.
1103 9392508 We further hypothesized that leptin administration would raise hypothalamic POMC mRNA levels in leptin-deficient animals, but not in mice with defective leptin receptors.
1104 9392508 Five daily intraperitoneal injections of recombinant murine leptin (150 microg) raised levels of POMC mRNA in the rostral arcuate nucleus of ob/ob mice (n = 8) by 73% over saline-treated ob/ob control values (n = 8; P < 0.01), but was without effect in db/db mice (n = 6).
1105 9392508 In normal rats, two injections of a low dose of leptin (3.5 microg) into the third cerebral ventricle (n = 15) during a 40-h period of fasting also increased POMC mRNA levels in the rostral arcuate nucleus to values 39% greater than those in vehicle-treated controls (n = 14; P = 0.02).
1106 9392508 We conclude that reduced central nervous system leptin signaling owing to fasting or to genetic defects in leptin or its receptor lower POMC mRNA levels in the rostral arcuate nucleus.
1107 9392508 The finding that leptin reverses this effect in ob/ob, but not db/db, mice suggests that leptin stimulates arcuate nucleus POMC gene expression via a pathway involving leptin receptors.
1108 9392508 Leptin increases hypothalamic pro-opiomelanocortin mRNA expression in the rostral arcuate nucleus.
1109 9392508 Melanocortins are peptides, cleaved from the pro-opiomelanocortin (POMC) precursor, that act in the brain to reduce food intake and are potential mediators of leptin action.
1110 9392508 To test the hypothesis that these POMC neurons are regulated by leptin, we used in situ hybridization to determine whether reduced leptin signaling (as occurs in fasting), genetic leptin deficiency (in obese ob/ob mice), or genetic leptin resistance (in obese db/db mice) lower expression of POMC mRNA.
1111 9392508 We further hypothesized that leptin administration would raise hypothalamic POMC mRNA levels in leptin-deficient animals, but not in mice with defective leptin receptors.
1112 9392508 Five daily intraperitoneal injections of recombinant murine leptin (150 microg) raised levels of POMC mRNA in the rostral arcuate nucleus of ob/ob mice (n = 8) by 73% over saline-treated ob/ob control values (n = 8; P < 0.01), but was without effect in db/db mice (n = 6).
1113 9392508 In normal rats, two injections of a low dose of leptin (3.5 microg) into the third cerebral ventricle (n = 15) during a 40-h period of fasting also increased POMC mRNA levels in the rostral arcuate nucleus to values 39% greater than those in vehicle-treated controls (n = 14; P = 0.02).
1114 9392508 We conclude that reduced central nervous system leptin signaling owing to fasting or to genetic defects in leptin or its receptor lower POMC mRNA levels in the rostral arcuate nucleus.
1115 9392508 The finding that leptin reverses this effect in ob/ob, but not db/db, mice suggests that leptin stimulates arcuate nucleus POMC gene expression via a pathway involving leptin receptors.
1116 9404305 In the group given MPA the increase of ACTH after stimulation with corticotrophin-releasing hormone (CRH) remained normal but it was suppressed in the group treated with PROL.
1117 9404305 The inhibition constants (Ki) of PROL for both the progesterone receptor (PR) and the glucocorticoid receptor (GR) were approximately then times higher than those of MPA.
1118 9435421 Standard and low-dose short adrenocorticotropin test compared with insulin-induced hypoglycemia for assessment of the hypothalamic-pituitary-adrenal axis in children with idiopathic multiple pituitary hormone deficiencies.
1119 9439934 The tumour cells showed immunoreactivity for neuron-specific enolase (NSE), ACTH and beta-endorphin with differing degree of intensity.
1120 9519731 Since alpha-MSH is coded for by the pro-opiomelanocortin (POMC) gene, we examined if POMC gene expression would be inhibited by fasting in normal mice or in models of obesity characterized by leptin insufficiency (ob/ob) or leptin insensitivity (db/db).
1121 9519731 In wild-type mice, hypothalamic POMC mRNA was decreased > 60% after a 2-day fast and was positively correlated with leptin mRNA.
1122 9519731 POMC mRNA was negatively correlated with both neuropeptide Y (NPY) and melanin-concentrating hormone (MCH) mRNA.
1123 9519731 Finally, treatment of both male and female ob/ob mice with leptin stimulated hypothalamic POMC mRNA by about threefold.
1124 9519731 These results suggest that impairment in production, processing, or responsiveness to alpha-MSH may be a common feature of obesity and that hypothalamic POMC neurons, stimulated by leptin, may constitute a link between leptin and the melanocortin system.
1125 9519731 Since alpha-MSH is coded for by the pro-opiomelanocortin (POMC) gene, we examined if POMC gene expression would be inhibited by fasting in normal mice or in models of obesity characterized by leptin insufficiency (ob/ob) or leptin insensitivity (db/db).
1126 9519731 In wild-type mice, hypothalamic POMC mRNA was decreased > 60% after a 2-day fast and was positively correlated with leptin mRNA.
1127 9519731 POMC mRNA was negatively correlated with both neuropeptide Y (NPY) and melanin-concentrating hormone (MCH) mRNA.
1128 9519731 Finally, treatment of both male and female ob/ob mice with leptin stimulated hypothalamic POMC mRNA by about threefold.
1129 9519731 These results suggest that impairment in production, processing, or responsiveness to alpha-MSH may be a common feature of obesity and that hypothalamic POMC neurons, stimulated by leptin, may constitute a link between leptin and the melanocortin system.
1130 9519731 Since alpha-MSH is coded for by the pro-opiomelanocortin (POMC) gene, we examined if POMC gene expression would be inhibited by fasting in normal mice or in models of obesity characterized by leptin insufficiency (ob/ob) or leptin insensitivity (db/db).
1131 9519731 In wild-type mice, hypothalamic POMC mRNA was decreased > 60% after a 2-day fast and was positively correlated with leptin mRNA.
1132 9519731 POMC mRNA was negatively correlated with both neuropeptide Y (NPY) and melanin-concentrating hormone (MCH) mRNA.
1133 9519731 Finally, treatment of both male and female ob/ob mice with leptin stimulated hypothalamic POMC mRNA by about threefold.
1134 9519731 These results suggest that impairment in production, processing, or responsiveness to alpha-MSH may be a common feature of obesity and that hypothalamic POMC neurons, stimulated by leptin, may constitute a link between leptin and the melanocortin system.
1135 9519731 Since alpha-MSH is coded for by the pro-opiomelanocortin (POMC) gene, we examined if POMC gene expression would be inhibited by fasting in normal mice or in models of obesity characterized by leptin insufficiency (ob/ob) or leptin insensitivity (db/db).
1136 9519731 In wild-type mice, hypothalamic POMC mRNA was decreased > 60% after a 2-day fast and was positively correlated with leptin mRNA.
1137 9519731 POMC mRNA was negatively correlated with both neuropeptide Y (NPY) and melanin-concentrating hormone (MCH) mRNA.
1138 9519731 Finally, treatment of both male and female ob/ob mice with leptin stimulated hypothalamic POMC mRNA by about threefold.
1139 9519731 These results suggest that impairment in production, processing, or responsiveness to alpha-MSH may be a common feature of obesity and that hypothalamic POMC neurons, stimulated by leptin, may constitute a link between leptin and the melanocortin system.
1140 9519731 Since alpha-MSH is coded for by the pro-opiomelanocortin (POMC) gene, we examined if POMC gene expression would be inhibited by fasting in normal mice or in models of obesity characterized by leptin insufficiency (ob/ob) or leptin insensitivity (db/db).
1141 9519731 In wild-type mice, hypothalamic POMC mRNA was decreased > 60% after a 2-day fast and was positively correlated with leptin mRNA.
1142 9519731 POMC mRNA was negatively correlated with both neuropeptide Y (NPY) and melanin-concentrating hormone (MCH) mRNA.
1143 9519731 Finally, treatment of both male and female ob/ob mice with leptin stimulated hypothalamic POMC mRNA by about threefold.
1144 9519731 These results suggest that impairment in production, processing, or responsiveness to alpha-MSH may be a common feature of obesity and that hypothalamic POMC neurons, stimulated by leptin, may constitute a link between leptin and the melanocortin system.
1145 9566647 The tumour was diagnosed histopathologically as a moderately differentiated adenocarcinoma with focal neuroendocrine cell differentiation and dispersed cells reacting with antisera against neurone-specific enolase, S-100 protein, neuropeptide Y, follicle-stimulating hormone, substance P, vasoactive polypeptide (VIP), adrenocorticotropic hormone and pancreatic polypeptide (PP) as well as to one of three tested antisera raised against antidiuretic hormone (ADH).
1146 9579239 Acromegaly and Cushing's syndrome due to ectopic production of GHRH and ACTH by a thymic carcinoid tumour: in vitro responses to GHRH and GHRP-6.
1147 9579239 Circulating levels of IGF-1, chromogranin A and neuropeptide Y (NPY) were also increased.
1148 9579239 Immunoreactive GHRH, ACTH and NPY, but not immunoreactive GH, were detected in 80-90% of the tumour cells and the three peptides appeared to be co-localized.
1149 9579239 In primary culture, cells from this tumour displayed calcium influx in response to GHRH or GH releasing peptide-6 (GHRP-6), while there were not such responses by cells from another carcinoid not producing GHRH, ACTH or NPY.
1150 9579239 These results demonstrate a rare case of ectopic production of GHRH, ACTH and NPY, and indicate that the tumour cells were responsive to GHRH and GHRP-6 as well as octreotide.
1151 9579239 Acromegaly and Cushing's syndrome due to ectopic production of GHRH and ACTH by a thymic carcinoid tumour: in vitro responses to GHRH and GHRP-6.
1152 9579239 Circulating levels of IGF-1, chromogranin A and neuropeptide Y (NPY) were also increased.
1153 9579239 Immunoreactive GHRH, ACTH and NPY, but not immunoreactive GH, were detected in 80-90% of the tumour cells and the three peptides appeared to be co-localized.
1154 9579239 In primary culture, cells from this tumour displayed calcium influx in response to GHRH or GH releasing peptide-6 (GHRP-6), while there were not such responses by cells from another carcinoid not producing GHRH, ACTH or NPY.
1155 9579239 These results demonstrate a rare case of ectopic production of GHRH, ACTH and NPY, and indicate that the tumour cells were responsive to GHRH and GHRP-6 as well as octreotide.
1156 9579239 Acromegaly and Cushing's syndrome due to ectopic production of GHRH and ACTH by a thymic carcinoid tumour: in vitro responses to GHRH and GHRP-6.
1157 9579239 Circulating levels of IGF-1, chromogranin A and neuropeptide Y (NPY) were also increased.
1158 9579239 Immunoreactive GHRH, ACTH and NPY, but not immunoreactive GH, were detected in 80-90% of the tumour cells and the three peptides appeared to be co-localized.
1159 9579239 In primary culture, cells from this tumour displayed calcium influx in response to GHRH or GH releasing peptide-6 (GHRP-6), while there were not such responses by cells from another carcinoid not producing GHRH, ACTH or NPY.
1160 9579239 These results demonstrate a rare case of ectopic production of GHRH, ACTH and NPY, and indicate that the tumour cells were responsive to GHRH and GHRP-6 as well as octreotide.
1161 9579239 Acromegaly and Cushing's syndrome due to ectopic production of GHRH and ACTH by a thymic carcinoid tumour: in vitro responses to GHRH and GHRP-6.
1162 9579239 Circulating levels of IGF-1, chromogranin A and neuropeptide Y (NPY) were also increased.
1163 9579239 Immunoreactive GHRH, ACTH and NPY, but not immunoreactive GH, were detected in 80-90% of the tumour cells and the three peptides appeared to be co-localized.
1164 9579239 In primary culture, cells from this tumour displayed calcium influx in response to GHRH or GH releasing peptide-6 (GHRP-6), while there were not such responses by cells from another carcinoid not producing GHRH, ACTH or NPY.
1165 9579239 These results demonstrate a rare case of ectopic production of GHRH, ACTH and NPY, and indicate that the tumour cells were responsive to GHRH and GHRP-6 as well as octreotide.
1166 9609982 The serum prolactin, growth hormone, adrenocorticotropic hormone, and 11-deoxycortisol levels were elevated, but the estradiol and dehydroepiandrosterone-sulphate levels were within normal limits.
1167 9610761 Although insulin inhibited lipolysis induced by norepinephrine and ACTH at a concentration of 10(-10) M, it failed to inhibit basal lipolysis even at a concentration of 10(-6) M.
1168 9610761 These results indicate that insulin inhibits only the lipolysis induced by lipolytic agents such as norepinephrine and ACTH but not the basal lipolysis found in the absence of lipolytic agents.
1169 9610761 Although insulin inhibited lipolysis induced by norepinephrine and ACTH at a concentration of 10(-10) M, it failed to inhibit basal lipolysis even at a concentration of 10(-6) M.
1170 9610761 These results indicate that insulin inhibits only the lipolysis induced by lipolytic agents such as norepinephrine and ACTH but not the basal lipolysis found in the absence of lipolytic agents.
1171 9667058 The most relevant clinical aspects of hyperprolactinemia, acromegaly, Cushing's disease, secondary hyperthyroidism, syndrome of inappropriate ADH secretion, panhypopituitarism, growth hormone deficiency, gonadotropin deficiency, ACTH deficiency, TSH deficiency, and diabetes insipidus are discussed.
1172 9743244 ACTH release induced by corticotropin-releasing factors (CRF) was significantly increased in the short-term diabetic rats, whereas ACTH release decreased in the long-term diabetic rats.
1173 9743244 A stimulator of adenylate cyclase, forskolin, caused marked increases in ACTH release in short-term diabetic rats, whereas it did not affect the long-term diabetic rats.
1174 9743244 In addition, CRF-induced ACTH release also increased in normal anterior pituitary cells cultured under high glucose conditions (25 mmol/L) for 5 d.
1175 9743244 These results suggest that the increase in the CRF-induced ACTH release from cultured anterior pituitary cells of short-term diabetic rats appears to involve the cAMP system in part.
1176 9743244 In contrast, the decrease in the CRF-induced ACTH release from the cultured anterior pituitary cells of long-term diabetic rats may indicate a change in the properties of the L-type Ca2+ channel coupled with the CRF receptor, or in the CRF receptor itself.
1177 9743244 ACTH release induced by corticotropin-releasing factors (CRF) was significantly increased in the short-term diabetic rats, whereas ACTH release decreased in the long-term diabetic rats.
1178 9743244 A stimulator of adenylate cyclase, forskolin, caused marked increases in ACTH release in short-term diabetic rats, whereas it did not affect the long-term diabetic rats.
1179 9743244 In addition, CRF-induced ACTH release also increased in normal anterior pituitary cells cultured under high glucose conditions (25 mmol/L) for 5 d.
1180 9743244 These results suggest that the increase in the CRF-induced ACTH release from cultured anterior pituitary cells of short-term diabetic rats appears to involve the cAMP system in part.
1181 9743244 In contrast, the decrease in the CRF-induced ACTH release from the cultured anterior pituitary cells of long-term diabetic rats may indicate a change in the properties of the L-type Ca2+ channel coupled with the CRF receptor, or in the CRF receptor itself.
1182 9743244 ACTH release induced by corticotropin-releasing factors (CRF) was significantly increased in the short-term diabetic rats, whereas ACTH release decreased in the long-term diabetic rats.
1183 9743244 A stimulator of adenylate cyclase, forskolin, caused marked increases in ACTH release in short-term diabetic rats, whereas it did not affect the long-term diabetic rats.
1184 9743244 In addition, CRF-induced ACTH release also increased in normal anterior pituitary cells cultured under high glucose conditions (25 mmol/L) for 5 d.
1185 9743244 These results suggest that the increase in the CRF-induced ACTH release from cultured anterior pituitary cells of short-term diabetic rats appears to involve the cAMP system in part.
1186 9743244 In contrast, the decrease in the CRF-induced ACTH release from the cultured anterior pituitary cells of long-term diabetic rats may indicate a change in the properties of the L-type Ca2+ channel coupled with the CRF receptor, or in the CRF receptor itself.
1187 9743244 ACTH release induced by corticotropin-releasing factors (CRF) was significantly increased in the short-term diabetic rats, whereas ACTH release decreased in the long-term diabetic rats.
1188 9743244 A stimulator of adenylate cyclase, forskolin, caused marked increases in ACTH release in short-term diabetic rats, whereas it did not affect the long-term diabetic rats.
1189 9743244 In addition, CRF-induced ACTH release also increased in normal anterior pituitary cells cultured under high glucose conditions (25 mmol/L) for 5 d.
1190 9743244 These results suggest that the increase in the CRF-induced ACTH release from cultured anterior pituitary cells of short-term diabetic rats appears to involve the cAMP system in part.
1191 9743244 In contrast, the decrease in the CRF-induced ACTH release from the cultured anterior pituitary cells of long-term diabetic rats may indicate a change in the properties of the L-type Ca2+ channel coupled with the CRF receptor, or in the CRF receptor itself.
1192 9743244 ACTH release induced by corticotropin-releasing factors (CRF) was significantly increased in the short-term diabetic rats, whereas ACTH release decreased in the long-term diabetic rats.
1193 9743244 A stimulator of adenylate cyclase, forskolin, caused marked increases in ACTH release in short-term diabetic rats, whereas it did not affect the long-term diabetic rats.
1194 9743244 In addition, CRF-induced ACTH release also increased in normal anterior pituitary cells cultured under high glucose conditions (25 mmol/L) for 5 d.
1195 9743244 These results suggest that the increase in the CRF-induced ACTH release from cultured anterior pituitary cells of short-term diabetic rats appears to involve the cAMP system in part.
1196 9743244 In contrast, the decrease in the CRF-induced ACTH release from the cultured anterior pituitary cells of long-term diabetic rats may indicate a change in the properties of the L-type Ca2+ channel coupled with the CRF receptor, or in the CRF receptor itself.
1197 9745408 ACTH and cortisol responses to CRF, and PRL responses to TRH were normal in all cases, and LH and FSH responses to GnRH were compatible with pubertal stage.
1198 9781630 To test the hypothesis that the cortisol response to corticotropin (ACTH) infusion is independent of antecedent hypoglycemia, 10 healthy subjects received a standard ACTH infusion (0.25 mg Cosyntropin [Organon, West Orange, NJ] intravenously over 240 minutes) at 8:00 AM on day 1 and day 3 and a hypoglycemic insulin clamp study (1 mU/kg/min) at 8:00 AM on day 2.
1199 9792536 Among these, melanin-concentrating hormone (MCH) and neuropeptide Y (NPY) are potent appetite stimulants, whereas alpha-melanocyte-stimulating hormone (alpha-MSH), neurotensin, and glucagon-like peptide (GLP)-1(7-36) amide have appetite-suppressing properties.
1200 9792536 In the current study, we describe the functional interactions between orexigenic (appetite-stimulating: MCH and NPY) and anorectic (appetite-suppressing: alpha-MSH, neurotensin, and GLP-1) peptides after intracerebroventricular (i.c.v.) administration in the rat.
1201 9792536 The i.c.v. administration of GLP-1 completely prevents the orexigenic effects of both MCH and NPY.
1202 9792536 However, i.c.v. administration of alpha-MSH prevents only the orexigenic effect of MCH, as we have previously shown, but does not prevent the effect of NPY on food intake.
1203 9792536 Similarly, i.c.v. administration of neurotensin prevents only the orexigenic effect of MCH, but does not prevent the appetite-stimulating effect of NPY.
1204 9792536 Among these, melanin-concentrating hormone (MCH) and neuropeptide Y (NPY) are potent appetite stimulants, whereas alpha-melanocyte-stimulating hormone (alpha-MSH), neurotensin, and glucagon-like peptide (GLP)-1(7-36) amide have appetite-suppressing properties.
1205 9792536 In the current study, we describe the functional interactions between orexigenic (appetite-stimulating: MCH and NPY) and anorectic (appetite-suppressing: alpha-MSH, neurotensin, and GLP-1) peptides after intracerebroventricular (i.c.v.) administration in the rat.
1206 9792536 The i.c.v. administration of GLP-1 completely prevents the orexigenic effects of both MCH and NPY.
1207 9792536 However, i.c.v. administration of alpha-MSH prevents only the orexigenic effect of MCH, as we have previously shown, but does not prevent the effect of NPY on food intake.
1208 9792536 Similarly, i.c.v. administration of neurotensin prevents only the orexigenic effect of MCH, but does not prevent the appetite-stimulating effect of NPY.
1209 9792536 Among these, melanin-concentrating hormone (MCH) and neuropeptide Y (NPY) are potent appetite stimulants, whereas alpha-melanocyte-stimulating hormone (alpha-MSH), neurotensin, and glucagon-like peptide (GLP)-1(7-36) amide have appetite-suppressing properties.
1210 9792536 In the current study, we describe the functional interactions between orexigenic (appetite-stimulating: MCH and NPY) and anorectic (appetite-suppressing: alpha-MSH, neurotensin, and GLP-1) peptides after intracerebroventricular (i.c.v.) administration in the rat.
1211 9792536 The i.c.v. administration of GLP-1 completely prevents the orexigenic effects of both MCH and NPY.
1212 9792536 However, i.c.v. administration of alpha-MSH prevents only the orexigenic effect of MCH, as we have previously shown, but does not prevent the effect of NPY on food intake.
1213 9792536 Similarly, i.c.v. administration of neurotensin prevents only the orexigenic effect of MCH, but does not prevent the appetite-stimulating effect of NPY.
1214 9794475 In ob/ob mice, leptin deficiency results in increased expression of neuropeptide Y (NPY), agouti-related protein (AGRP), and melanin-concentrating hormone (MCH), and decreased expression of POMC.
1215 9794475 To define other potential sites of leptin resistance, we used in situ hybridization to evaluate the expression of messenger RNAs (mRNAs) encoding a number of peptides, including NPY, AGRP, MCH, and POMC.
1216 9794475 AGRP mRNA was also decreased, whereas POMC mRNA levels in the arcuate nucleus were the same as control.
1217 9794475 In ob/ob mice, leptin deficiency results in increased expression of neuropeptide Y (NPY), agouti-related protein (AGRP), and melanin-concentrating hormone (MCH), and decreased expression of POMC.
1218 9794475 To define other potential sites of leptin resistance, we used in situ hybridization to evaluate the expression of messenger RNAs (mRNAs) encoding a number of peptides, including NPY, AGRP, MCH, and POMC.
1219 9794475 AGRP mRNA was also decreased, whereas POMC mRNA levels in the arcuate nucleus were the same as control.
1220 9794475 In ob/ob mice, leptin deficiency results in increased expression of neuropeptide Y (NPY), agouti-related protein (AGRP), and melanin-concentrating hormone (MCH), and decreased expression of POMC.
1221 9794475 To define other potential sites of leptin resistance, we used in situ hybridization to evaluate the expression of messenger RNAs (mRNAs) encoding a number of peptides, including NPY, AGRP, MCH, and POMC.
1222 9794475 AGRP mRNA was also decreased, whereas POMC mRNA levels in the arcuate nucleus were the same as control.
1223 9806554 The peak on chromosome 2 coincided with the region containing the gene (POMC) encoding pro-opiomelanocortin, a locus previously linked to leptin levels and fat mass in a Mexican-American population and shown to be mutated in obese humans.
1224 9807060 To determine the effects of both corticosterone (B) and chronic stressors on acute ACTH responses to restraint, young male rats were exposed to streptozotocin-induced diabetes, cold (5-7 degreesC) or intracerebroventricular (icv) neuropeptide Y (NPY) for 5 d and then exposed to restraint within 2 h after lights on.
1225 9807060 By contrast, there was no ACTH or B response to restraint in NPY-infused intact rats.
1226 9807060 To determine the effects of both corticosterone (B) and chronic stressors on acute ACTH responses to restraint, young male rats were exposed to streptozotocin-induced diabetes, cold (5-7 degreesC) or intracerebroventricular (icv) neuropeptide Y (NPY) for 5 d and then exposed to restraint within 2 h after lights on.
1227 9807060 By contrast, there was no ACTH or B response to restraint in NPY-infused intact rats.
1228 9819197 The agouti-related protein gene (Agrp) is a novel gene implicated in the control of feeding behavior.
1229 9819197 The hypothalamic expression of Agrp is regulated by leptin, and overexpression of Agrp in transgenic animals results in obesity and diabetes.
1230 9819197 Both forms act as competitive antagonists of alpha-melanocyte stimulating hormone (alpha-MSH) at melanocortin-3 (MC-3) and melanocortin-4 receptors (MC-4).
1231 9888542 OB protein leptin inhibits the secretion of cortisol in primary cultures of bovine adrenocortical cells and down-regulates 17alpha-hydroxylase cytochrome P450 mRNA expression.
1232 9888542 To analyze if leptin regulates other major enzymes involved in adrenal steroidogenesis we tested its effect on mRNA expression for two further key enzymes, C21-hydroxylase (P450C21) and side-chain cleavage enzyme (P450SCC).
1233 9888542 Addition of leptin led to a reduction of ACTH-stimulated mRNA accumulation of 73% for P450C21 and of 45% for P450SCC.
1234 10064107 Plasma concentrations of insulin, glucagon and beta-endorphin- were also determined using radioimmunoassay.
1235 10064107 Thus we suggest that electroacupuncture stimulation at the Zhongwan acupoint induces secretion of endogenous beta-endorphin which reduces plasma glucose concentration in an insulin-dependent manner.
1236 10064107 Plasma concentrations of insulin, glucagon and beta-endorphin- were also determined using radioimmunoassay.
1237 10064107 Thus we suggest that electroacupuncture stimulation at the Zhongwan acupoint induces secretion of endogenous beta-endorphin which reduces plasma glucose concentration in an insulin-dependent manner.
1238 10070149 Rats were fasted overnight to promote feeding behavior, then injected intraperitoneally with LPS (100 micrograms/kg ip), followed 30 min later by intracerebroventricular injection of either alpha-MSH or the melanocortin receptor subtype 3/subtype 4 (MC3-R/MC4-R) antagonist SHU-9119.
1239 10070149 Central MC3-R/MC4-R blockade did not affect Tb or food intake in the absence of LPS treatment, but it reversed the LPS-induced reduction in 24-h food intake and increased LPS-induced fever without altering the LPS-induced suppression of locomotion.
1240 10079035 Expression of leptin receptor (OB-R) mRNA was detected in the human anterior pituitary as well as in ACTH-secreting and nonsecreting pituitary adenomas by RT-PCR with primers recognizing all receptor splice variants.
1241 10099967 Gonadotrophin releasing hormone (GnRH), corticotrophin releasing hormone (CRH), metoclopramide and thyroid releasing hormone (TRH) tests were performed in 15 diabetic women, eight amenorrhoeic (AD) and seven eumenorrhoeic (ED).
1242 10099967 The AD women had lower plasma concentrations of luteinizing hormone (LH), follicle stimulating hormone (FSH), prolactin, oestradiol, androstenedione and 17-hydroxyprogesterone (17-OHP) than the ED women.
1243 10099967 The responses of pituitary gonadotrophins to GnRH, and of thyroid stimulating hormone (TSH) to TRH, were similar in both groups.
1244 10099967 The AD women had a lower prolactin response to TRH and metoclopramide, and lower ACTH and cortisol responses to CRH, than the ED women.
1245 10208096 The following endocrinological diagnostic procedures were carried out: hormonal (RIA) basal profile: FT3, FT4, TSH, PRL, ACTH, FSH, LH, 8.00 a.m. and p.m. cortisolemia, Aldo, PRA, DHEA-S, FTe, E2, P, PTH, CT, and calcemia and phosphoremia; provocative tests: TRH, GnRH, insulin hypoglycemia, etc.; inhibition tests: "overnight" and high dose dexamethasone.
1246 10208096 The Authors hypothesize that the ESS may be a "new" hypothalamic syndrome (compression/stretching on hypophysis and/or hypophyseal stalk by arachnoidocele; disorder of some hormones and neurotransmitters as leptin, neuropeptide Y, orexins, POMC-derived peptides, etc).
1247 10208096 The following endocrinological diagnostic procedures were carried out: hormonal (RIA) basal profile: FT3, FT4, TSH, PRL, ACTH, FSH, LH, 8.00 a.m. and p.m. cortisolemia, Aldo, PRA, DHEA-S, FTe, E2, P, PTH, CT, and calcemia and phosphoremia; provocative tests: TRH, GnRH, insulin hypoglycemia, etc.; inhibition tests: "overnight" and high dose dexamethasone.
1248 10208096 The Authors hypothesize that the ESS may be a "new" hypothalamic syndrome (compression/stretching on hypophysis and/or hypophyseal stalk by arachnoidocele; disorder of some hormones and neurotransmitters as leptin, neuropeptide Y, orexins, POMC-derived peptides, etc).
1249 10233022 STZ-induced diabetes decreases and insulin normalizes POMC mRNA in arcuate nucleus and pituitary in rats.
1250 10233022 Proopiomelanocortin (POMC) mRNA in arcuate nucleus (Arc) and pituitary decreased in diabetes and normalized after insulin treatment.
1251 10233022 Prodynorphin (proDyn) mRNA increased in diabetes and normalized in the pituitary after insulin but not in the Arc.
1252 10233022 Diabetes did not alter proenkephalin (proEnk) expression in the Arc or pituitary, nor dynorphin A1-17 or beta-endorphin in paraventricular nucleus (PVN). alpha-Melanocyte-stimulating hormone (alpha-MSH) peptide levels were decreased in the PVN and normalized following insulin treatment.
1253 10233022 Diabetes increased Arc neuropeptide Y mRNA, and insulin suppressed this increase.
1254 10233022 In experiment 2, insulin (2.5 IU/kg sc) daily for 1 wk in normal rats increased Arc POMC mRNA, but not proDyn and proEnk mRNA.
1255 10233022 Also, insulin may influence Arc and pituitary POMC activity in neurons that regulate energy metabolism.
1256 10233022 STZ-induced diabetes decreases and insulin normalizes POMC mRNA in arcuate nucleus and pituitary in rats.
1257 10233022 Proopiomelanocortin (POMC) mRNA in arcuate nucleus (Arc) and pituitary decreased in diabetes and normalized after insulin treatment.
1258 10233022 Prodynorphin (proDyn) mRNA increased in diabetes and normalized in the pituitary after insulin but not in the Arc.
1259 10233022 Diabetes did not alter proenkephalin (proEnk) expression in the Arc or pituitary, nor dynorphin A1-17 or beta-endorphin in paraventricular nucleus (PVN). alpha-Melanocyte-stimulating hormone (alpha-MSH) peptide levels were decreased in the PVN and normalized following insulin treatment.
1260 10233022 Diabetes increased Arc neuropeptide Y mRNA, and insulin suppressed this increase.
1261 10233022 In experiment 2, insulin (2.5 IU/kg sc) daily for 1 wk in normal rats increased Arc POMC mRNA, but not proDyn and proEnk mRNA.
1262 10233022 Also, insulin may influence Arc and pituitary POMC activity in neurons that regulate energy metabolism.
1263 10233022 STZ-induced diabetes decreases and insulin normalizes POMC mRNA in arcuate nucleus and pituitary in rats.
1264 10233022 Proopiomelanocortin (POMC) mRNA in arcuate nucleus (Arc) and pituitary decreased in diabetes and normalized after insulin treatment.
1265 10233022 Prodynorphin (proDyn) mRNA increased in diabetes and normalized in the pituitary after insulin but not in the Arc.
1266 10233022 Diabetes did not alter proenkephalin (proEnk) expression in the Arc or pituitary, nor dynorphin A1-17 or beta-endorphin in paraventricular nucleus (PVN). alpha-Melanocyte-stimulating hormone (alpha-MSH) peptide levels were decreased in the PVN and normalized following insulin treatment.
1267 10233022 Diabetes increased Arc neuropeptide Y mRNA, and insulin suppressed this increase.
1268 10233022 In experiment 2, insulin (2.5 IU/kg sc) daily for 1 wk in normal rats increased Arc POMC mRNA, but not proDyn and proEnk mRNA.
1269 10233022 Also, insulin may influence Arc and pituitary POMC activity in neurons that regulate energy metabolism.
1270 10233022 STZ-induced diabetes decreases and insulin normalizes POMC mRNA in arcuate nucleus and pituitary in rats.
1271 10233022 Proopiomelanocortin (POMC) mRNA in arcuate nucleus (Arc) and pituitary decreased in diabetes and normalized after insulin treatment.
1272 10233022 Prodynorphin (proDyn) mRNA increased in diabetes and normalized in the pituitary after insulin but not in the Arc.
1273 10233022 Diabetes did not alter proenkephalin (proEnk) expression in the Arc or pituitary, nor dynorphin A1-17 or beta-endorphin in paraventricular nucleus (PVN). alpha-Melanocyte-stimulating hormone (alpha-MSH) peptide levels were decreased in the PVN and normalized following insulin treatment.
1274 10233022 Diabetes increased Arc neuropeptide Y mRNA, and insulin suppressed this increase.
1275 10233022 In experiment 2, insulin (2.5 IU/kg sc) daily for 1 wk in normal rats increased Arc POMC mRNA, but not proDyn and proEnk mRNA.
1276 10233022 Also, insulin may influence Arc and pituitary POMC activity in neurons that regulate energy metabolism.
1277 10233022 STZ-induced diabetes decreases and insulin normalizes POMC mRNA in arcuate nucleus and pituitary in rats.
1278 10233022 Proopiomelanocortin (POMC) mRNA in arcuate nucleus (Arc) and pituitary decreased in diabetes and normalized after insulin treatment.
1279 10233022 Prodynorphin (proDyn) mRNA increased in diabetes and normalized in the pituitary after insulin but not in the Arc.
1280 10233022 Diabetes did not alter proenkephalin (proEnk) expression in the Arc or pituitary, nor dynorphin A1-17 or beta-endorphin in paraventricular nucleus (PVN). alpha-Melanocyte-stimulating hormone (alpha-MSH) peptide levels were decreased in the PVN and normalized following insulin treatment.
1281 10233022 Diabetes increased Arc neuropeptide Y mRNA, and insulin suppressed this increase.
1282 10233022 In experiment 2, insulin (2.5 IU/kg sc) daily for 1 wk in normal rats increased Arc POMC mRNA, but not proDyn and proEnk mRNA.
1283 10233022 Also, insulin may influence Arc and pituitary POMC activity in neurons that regulate energy metabolism.
1284 10334300 Altered energy balance causes selective changes in melanocortin-4(MC4-R), but not melanocortin-3 (MC3-R), receptors in specific hypothalamic regions: further evidence that activation of MC4-R is a physiological inhibitor of feeding.
1285 10334300 We have examined the effects of underfeeding and obesity on the density of hypothalamic melanocortin MC3 and MC4 receptors (MC3-R and MC4-R, respectively), which may mediate the hypophagic effects of alpha-melanocyte-stimulating hormone (MSH) in the rat.
1286 10334300 MC3-R and MC4-R were measured by quantitative autoradiography in brain sections using 125I-labeled Nle4-D-Phe7-alpha-MSH (125I-NDP-MSH) and discriminated by masking MC3-R with excess unlabelled gamma2-MSH.
1287 10334300 We suggest that increased density of MC4-R with food restriction and in obese Zucker rats reflects receptor upregulation secondary to decreased release of alpha-MSH, consistent with increased hunger in these models.
1288 10334300 Conversely, downregulation of MC4-R in diet-induced obesity may indicate increased alpha-MSH secretion in an attempt to limit overeating.
1289 10334300 This alpha-MSH/MC4-R system may be inhibited by leptin and/or insulin.
1290 10334300 Altered energy balance causes selective changes in melanocortin-4(MC4-R), but not melanocortin-3 (MC3-R), receptors in specific hypothalamic regions: further evidence that activation of MC4-R is a physiological inhibitor of feeding.
1291 10334300 We have examined the effects of underfeeding and obesity on the density of hypothalamic melanocortin MC3 and MC4 receptors (MC3-R and MC4-R, respectively), which may mediate the hypophagic effects of alpha-melanocyte-stimulating hormone (MSH) in the rat.
1292 10334300 MC3-R and MC4-R were measured by quantitative autoradiography in brain sections using 125I-labeled Nle4-D-Phe7-alpha-MSH (125I-NDP-MSH) and discriminated by masking MC3-R with excess unlabelled gamma2-MSH.
1293 10334300 We suggest that increased density of MC4-R with food restriction and in obese Zucker rats reflects receptor upregulation secondary to decreased release of alpha-MSH, consistent with increased hunger in these models.
1294 10334300 Conversely, downregulation of MC4-R in diet-induced obesity may indicate increased alpha-MSH secretion in an attempt to limit overeating.
1295 10334300 This alpha-MSH/MC4-R system may be inhibited by leptin and/or insulin.
1296 10334300 Altered energy balance causes selective changes in melanocortin-4(MC4-R), but not melanocortin-3 (MC3-R), receptors in specific hypothalamic regions: further evidence that activation of MC4-R is a physiological inhibitor of feeding.
1297 10334300 We have examined the effects of underfeeding and obesity on the density of hypothalamic melanocortin MC3 and MC4 receptors (MC3-R and MC4-R, respectively), which may mediate the hypophagic effects of alpha-melanocyte-stimulating hormone (MSH) in the rat.
1298 10334300 MC3-R and MC4-R were measured by quantitative autoradiography in brain sections using 125I-labeled Nle4-D-Phe7-alpha-MSH (125I-NDP-MSH) and discriminated by masking MC3-R with excess unlabelled gamma2-MSH.
1299 10334300 We suggest that increased density of MC4-R with food restriction and in obese Zucker rats reflects receptor upregulation secondary to decreased release of alpha-MSH, consistent with increased hunger in these models.
1300 10334300 Conversely, downregulation of MC4-R in diet-induced obesity may indicate increased alpha-MSH secretion in an attempt to limit overeating.
1301 10334300 This alpha-MSH/MC4-R system may be inhibited by leptin and/or insulin.
1302 10334300 Altered energy balance causes selective changes in melanocortin-4(MC4-R), but not melanocortin-3 (MC3-R), receptors in specific hypothalamic regions: further evidence that activation of MC4-R is a physiological inhibitor of feeding.
1303 10334300 We have examined the effects of underfeeding and obesity on the density of hypothalamic melanocortin MC3 and MC4 receptors (MC3-R and MC4-R, respectively), which may mediate the hypophagic effects of alpha-melanocyte-stimulating hormone (MSH) in the rat.
1304 10334300 MC3-R and MC4-R were measured by quantitative autoradiography in brain sections using 125I-labeled Nle4-D-Phe7-alpha-MSH (125I-NDP-MSH) and discriminated by masking MC3-R with excess unlabelled gamma2-MSH.
1305 10334300 We suggest that increased density of MC4-R with food restriction and in obese Zucker rats reflects receptor upregulation secondary to decreased release of alpha-MSH, consistent with increased hunger in these models.
1306 10334300 Conversely, downregulation of MC4-R in diet-induced obesity may indicate increased alpha-MSH secretion in an attempt to limit overeating.
1307 10334300 This alpha-MSH/MC4-R system may be inhibited by leptin and/or insulin.
1308 10334300 Altered energy balance causes selective changes in melanocortin-4(MC4-R), but not melanocortin-3 (MC3-R), receptors in specific hypothalamic regions: further evidence that activation of MC4-R is a physiological inhibitor of feeding.
1309 10334300 We have examined the effects of underfeeding and obesity on the density of hypothalamic melanocortin MC3 and MC4 receptors (MC3-R and MC4-R, respectively), which may mediate the hypophagic effects of alpha-melanocyte-stimulating hormone (MSH) in the rat.
1310 10334300 MC3-R and MC4-R were measured by quantitative autoradiography in brain sections using 125I-labeled Nle4-D-Phe7-alpha-MSH (125I-NDP-MSH) and discriminated by masking MC3-R with excess unlabelled gamma2-MSH.
1311 10334300 We suggest that increased density of MC4-R with food restriction and in obese Zucker rats reflects receptor upregulation secondary to decreased release of alpha-MSH, consistent with increased hunger in these models.
1312 10334300 Conversely, downregulation of MC4-R in diet-induced obesity may indicate increased alpha-MSH secretion in an attempt to limit overeating.
1313 10334300 This alpha-MSH/MC4-R system may be inhibited by leptin and/or insulin.
1314 10372707 The roles of insulin sensitivity, insulin-like growth factor I (IGF-I), and IGF-binding protein-1 and -3 in the hyperandrogenism of African-American and Caribbean Hispanic girls with premature adrenarche.
1315 10372707 As insulin and insulin-like growth factors (IGFs) have been implicated in the pathogenesis of PCOS, we hypothesize that they may also have a role in the hyperandrogenism of premature adrenarche.
1316 10372707 Fasting levels of IGF-I, IGF-binding protein-1 (IGFBP-1), IGFBP-3, sex hormone-binding globulin, and free testosterone (T) were also obtained.
1317 10372707 IGF-I correlated inversely with S(I) (r = -0.94; P < 0.001) and correlated directly with the ACTH-stimulated levels of 17OHPreg (r = 0.8; P < 0.001) and AS (r = 0.63; P < 0.05).
1318 10372707 IGF-I also correlated with the ACTH-stimulated ratios of 17OHPreg/17OHP (r = 0.61; P < 0.05), 17OHPreg/DHEA (r = 0.9; P < 0.001), 17OHP/AS (r = 0.79; P < 0.001), and DHEA/AS (r = 0.96; P < 0.001).
1319 10372707 IGFBP-1 correlated inversely with the ACTH-stimulated levels of 17OHPreg (r = -0.38; P < 0.05) and DHEA (r = -0.36; P < 0.05).
1320 10372707 There was a significant inverse correlation among ACTH-stimulated hormone levels, S(I), and IGFBP-1, whereas IGF-I correlated directly with ACTH-stimulated androgens.
1321 10372707 The roles of insulin sensitivity, insulin-like growth factor I (IGF-I), and IGF-binding protein-1 and -3 in the hyperandrogenism of African-American and Caribbean Hispanic girls with premature adrenarche.
1322 10372707 As insulin and insulin-like growth factors (IGFs) have been implicated in the pathogenesis of PCOS, we hypothesize that they may also have a role in the hyperandrogenism of premature adrenarche.
1323 10372707 Fasting levels of IGF-I, IGF-binding protein-1 (IGFBP-1), IGFBP-3, sex hormone-binding globulin, and free testosterone (T) were also obtained.
1324 10372707 IGF-I correlated inversely with S(I) (r = -0.94; P < 0.001) and correlated directly with the ACTH-stimulated levels of 17OHPreg (r = 0.8; P < 0.001) and AS (r = 0.63; P < 0.05).
1325 10372707 IGF-I also correlated with the ACTH-stimulated ratios of 17OHPreg/17OHP (r = 0.61; P < 0.05), 17OHPreg/DHEA (r = 0.9; P < 0.001), 17OHP/AS (r = 0.79; P < 0.001), and DHEA/AS (r = 0.96; P < 0.001).
1326 10372707 IGFBP-1 correlated inversely with the ACTH-stimulated levels of 17OHPreg (r = -0.38; P < 0.05) and DHEA (r = -0.36; P < 0.05).
1327 10372707 There was a significant inverse correlation among ACTH-stimulated hormone levels, S(I), and IGFBP-1, whereas IGF-I correlated directly with ACTH-stimulated androgens.
1328 10372707 The roles of insulin sensitivity, insulin-like growth factor I (IGF-I), and IGF-binding protein-1 and -3 in the hyperandrogenism of African-American and Caribbean Hispanic girls with premature adrenarche.
1329 10372707 As insulin and insulin-like growth factors (IGFs) have been implicated in the pathogenesis of PCOS, we hypothesize that they may also have a role in the hyperandrogenism of premature adrenarche.
1330 10372707 Fasting levels of IGF-I, IGF-binding protein-1 (IGFBP-1), IGFBP-3, sex hormone-binding globulin, and free testosterone (T) were also obtained.
1331 10372707 IGF-I correlated inversely with S(I) (r = -0.94; P < 0.001) and correlated directly with the ACTH-stimulated levels of 17OHPreg (r = 0.8; P < 0.001) and AS (r = 0.63; P < 0.05).
1332 10372707 IGF-I also correlated with the ACTH-stimulated ratios of 17OHPreg/17OHP (r = 0.61; P < 0.05), 17OHPreg/DHEA (r = 0.9; P < 0.001), 17OHP/AS (r = 0.79; P < 0.001), and DHEA/AS (r = 0.96; P < 0.001).
1333 10372707 IGFBP-1 correlated inversely with the ACTH-stimulated levels of 17OHPreg (r = -0.38; P < 0.05) and DHEA (r = -0.36; P < 0.05).
1334 10372707 There was a significant inverse correlation among ACTH-stimulated hormone levels, S(I), and IGFBP-1, whereas IGF-I correlated directly with ACTH-stimulated androgens.
1335 10372707 The roles of insulin sensitivity, insulin-like growth factor I (IGF-I), and IGF-binding protein-1 and -3 in the hyperandrogenism of African-American and Caribbean Hispanic girls with premature adrenarche.
1336 10372707 As insulin and insulin-like growth factors (IGFs) have been implicated in the pathogenesis of PCOS, we hypothesize that they may also have a role in the hyperandrogenism of premature adrenarche.
1337 10372707 Fasting levels of IGF-I, IGF-binding protein-1 (IGFBP-1), IGFBP-3, sex hormone-binding globulin, and free testosterone (T) were also obtained.
1338 10372707 IGF-I correlated inversely with S(I) (r = -0.94; P < 0.001) and correlated directly with the ACTH-stimulated levels of 17OHPreg (r = 0.8; P < 0.001) and AS (r = 0.63; P < 0.05).
1339 10372707 IGF-I also correlated with the ACTH-stimulated ratios of 17OHPreg/17OHP (r = 0.61; P < 0.05), 17OHPreg/DHEA (r = 0.9; P < 0.001), 17OHP/AS (r = 0.79; P < 0.001), and DHEA/AS (r = 0.96; P < 0.001).
1340 10372707 IGFBP-1 correlated inversely with the ACTH-stimulated levels of 17OHPreg (r = -0.38; P < 0.05) and DHEA (r = -0.36; P < 0.05).
1341 10372707 There was a significant inverse correlation among ACTH-stimulated hormone levels, S(I), and IGFBP-1, whereas IGF-I correlated directly with ACTH-stimulated androgens.
1342 10395233 The serum levels of intact PTH (iPTH), PTH-related protein (PTH-rP), 1,25-dihydroxy vitamin D (1,25- (OH)2 D), ACTH, cortisol, gonadotropins and testosterone were decreased, but his serum levels of triiodothyronine (T3) and thyroxine (T4) were within the normal range at admission, with depressed TSH and slightly increased thyroglobulin.
1343 10436815 Pancreatic endocrine tumors (PET's) can be divided on a clinical and pathologic basis into ten classes [insulinomas, gastrinomas (Zollinger-Ellison syndrome), VIPomas (Verner-Morrison syndrome, WDHA, pancreatic cholera), glucagonomas, somatostatinomas, ACTH-releasing tumors (ACTHomas), growth hormone-releasing factor secreting tumors (GRFomas), nonfunctioning or pancreatic polypeptide secreting tumors (non-functioning PET), PET's causing carcinoid syndrome and PET's causing hypercalcemia)].
1344 10480603 The effects of corticotropin-releasing factor (CRF) on the intracellular concentration of Ca2+ were studied in isolated single beta-cells of the rat islet.
1345 10480603 Immunohistochemical staining using CRF-receptor antibodies revealed the presence of both type 1 (CRF-R1) and type 2 (CRF-R2) receptors for CRF in the majority of islet cells.
1346 10480603 These results suggest that in single beta-cells of rat islets, CRF, through its own receptor, potentiates Ca2+ influx through the L-type Ca2+ channel by activation of the cAMP/protein kinase A signaling pathway.
1347 10499510 Fasting regulates hypothalamic neuropeptide Y, agouti-related peptide, and proopiomelanocortin in diabetic mice independent of changes in leptin or insulin.
1348 10499510 Fasting increases hypothalamic neuropeptide Y (NPY) and agouti-related peptide (AGRP) messenger RNA (mRNA) and reduces hypothalamic POMC mRNA, and is also characterized by a reduction in plasma leptin, insulin, and glucose, each of which has been implicated in the regulation of hypothalamic gene expression.
1349 10499510 To further evaluate the roles of leptin, insulin, and glucose in mediating effects of fasting, we examined hypothalamic gene expression in nondiabetic and streptozotocin (STZ)-induced diabetic mice both under ad lib fed and 48-h fasted conditions.
1350 10499510 In both diabetic and nondiabetic mice, fasting stimulated hypothalamic NPY and AGRP mRNA and inhibited hypothalamic POMC mRNA and adipose leptin mRNA.
1351 10499510 However, in diabetic mice fasting had no effect on plasma leptin and insulin while decreasing plasma glucose, whereas in nondiabetic mice fasting decreased plasma leptin, insulin, and glucose.
1352 10499510 Furthermore, in nondiabetic fasted mice, NPY and AGRP mRNA were higher, and POMC mRNA and plasma glucose were lower, than in diabetic ad lib fed mice, even though insulin and leptin were similar in these two groups.
1353 10499510 These data are consistent with the hypothesis that although leptin and insulin regulate hypothalamic gene expression, glucose or other factors may have independent effects on hypothalamic and adipose gene expression under conditions of low insulin and leptin.
1354 10499510 Fasting regulates hypothalamic neuropeptide Y, agouti-related peptide, and proopiomelanocortin in diabetic mice independent of changes in leptin or insulin.
1355 10499510 Fasting increases hypothalamic neuropeptide Y (NPY) and agouti-related peptide (AGRP) messenger RNA (mRNA) and reduces hypothalamic POMC mRNA, and is also characterized by a reduction in plasma leptin, insulin, and glucose, each of which has been implicated in the regulation of hypothalamic gene expression.
1356 10499510 To further evaluate the roles of leptin, insulin, and glucose in mediating effects of fasting, we examined hypothalamic gene expression in nondiabetic and streptozotocin (STZ)-induced diabetic mice both under ad lib fed and 48-h fasted conditions.
1357 10499510 In both diabetic and nondiabetic mice, fasting stimulated hypothalamic NPY and AGRP mRNA and inhibited hypothalamic POMC mRNA and adipose leptin mRNA.
1358 10499510 However, in diabetic mice fasting had no effect on plasma leptin and insulin while decreasing plasma glucose, whereas in nondiabetic mice fasting decreased plasma leptin, insulin, and glucose.
1359 10499510 Furthermore, in nondiabetic fasted mice, NPY and AGRP mRNA were higher, and POMC mRNA and plasma glucose were lower, than in diabetic ad lib fed mice, even though insulin and leptin were similar in these two groups.
1360 10499510 These data are consistent with the hypothesis that although leptin and insulin regulate hypothalamic gene expression, glucose or other factors may have independent effects on hypothalamic and adipose gene expression under conditions of low insulin and leptin.
1361 10499510 Fasting regulates hypothalamic neuropeptide Y, agouti-related peptide, and proopiomelanocortin in diabetic mice independent of changes in leptin or insulin.
1362 10499510 Fasting increases hypothalamic neuropeptide Y (NPY) and agouti-related peptide (AGRP) messenger RNA (mRNA) and reduces hypothalamic POMC mRNA, and is also characterized by a reduction in plasma leptin, insulin, and glucose, each of which has been implicated in the regulation of hypothalamic gene expression.
1363 10499510 To further evaluate the roles of leptin, insulin, and glucose in mediating effects of fasting, we examined hypothalamic gene expression in nondiabetic and streptozotocin (STZ)-induced diabetic mice both under ad lib fed and 48-h fasted conditions.
1364 10499510 In both diabetic and nondiabetic mice, fasting stimulated hypothalamic NPY and AGRP mRNA and inhibited hypothalamic POMC mRNA and adipose leptin mRNA.
1365 10499510 However, in diabetic mice fasting had no effect on plasma leptin and insulin while decreasing plasma glucose, whereas in nondiabetic mice fasting decreased plasma leptin, insulin, and glucose.
1366 10499510 Furthermore, in nondiabetic fasted mice, NPY and AGRP mRNA were higher, and POMC mRNA and plasma glucose were lower, than in diabetic ad lib fed mice, even though insulin and leptin were similar in these two groups.
1367 10499510 These data are consistent with the hypothesis that although leptin and insulin regulate hypothalamic gene expression, glucose or other factors may have independent effects on hypothalamic and adipose gene expression under conditions of low insulin and leptin.
1368 10499510 Fasting regulates hypothalamic neuropeptide Y, agouti-related peptide, and proopiomelanocortin in diabetic mice independent of changes in leptin or insulin.
1369 10499510 Fasting increases hypothalamic neuropeptide Y (NPY) and agouti-related peptide (AGRP) messenger RNA (mRNA) and reduces hypothalamic POMC mRNA, and is also characterized by a reduction in plasma leptin, insulin, and glucose, each of which has been implicated in the regulation of hypothalamic gene expression.
1370 10499510 To further evaluate the roles of leptin, insulin, and glucose in mediating effects of fasting, we examined hypothalamic gene expression in nondiabetic and streptozotocin (STZ)-induced diabetic mice both under ad lib fed and 48-h fasted conditions.
1371 10499510 In both diabetic and nondiabetic mice, fasting stimulated hypothalamic NPY and AGRP mRNA and inhibited hypothalamic POMC mRNA and adipose leptin mRNA.
1372 10499510 However, in diabetic mice fasting had no effect on plasma leptin and insulin while decreasing plasma glucose, whereas in nondiabetic mice fasting decreased plasma leptin, insulin, and glucose.
1373 10499510 Furthermore, in nondiabetic fasted mice, NPY and AGRP mRNA were higher, and POMC mRNA and plasma glucose were lower, than in diabetic ad lib fed mice, even though insulin and leptin were similar in these two groups.
1374 10499510 These data are consistent with the hypothesis that although leptin and insulin regulate hypothalamic gene expression, glucose or other factors may have independent effects on hypothalamic and adipose gene expression under conditions of low insulin and leptin.
1375 10512369 Involvement of agouti-related protein, an endogenous antagonist of hypothalamic melanocortin receptor, in leptin action.
1376 10512369 To understand the role of agouti-related protein (AGRP), an endogenous antagonist of hypothalamic melanocortin receptor, in leptin action, we produced a full-length recombinant AGRP and examined its effect on the satiety effect of leptin.
1377 10512369 We also studied leptin's regulation of hypothalamic AGRP mRNA expression.
1378 10512369 The leptin-induced inhibition of food intake and body weight was reversed by co-injection of AGRP in a dose-dependent manner.
1379 10512369 Hypothalamic AGRP mRNA expression was upregulated in leptin-deficient ob/ob mice and leptin receptor-deficient db/db mice and downregulated in lethal yellow agouti mice (KKAy mice) with hyperleptinemia.
1380 10512369 A single i.c.v. injection of leptin reversed the increased AGRP mRNA levels in ob/ob mice but not in db/db mice.
1381 10512369 In control mice and KKAy mice, AGRP mRNA expression was upregulated during fasting, when plasma leptin concentrations were decreased.
1382 10512369 This study provides the first direct evidence that AGRP is a negative regulator of leptin action, and leptin downregulates hypothalamic AGRP production.
1383 10512369 Because leptin is shown to increase hypothalamic alpha-melanocyte stimulating hormone (alpha-MSH) production, our data suggest that its action via the hypothalamic melanocortin system is determined by the balance between the levels of its agonist and antagonist, alpha-MSH and AGRP.
1384 10563747 Responses of plasma gonadotropin and corticotropin-cortisol levels to respective hypothalamic hormones were delayed or blunted, but the response of plasma prolactin to thyrotropin-releasing hormone was exaggerated.
1385 10583426 Finally, by crossing the blood-brain barrier insulin exerts a host a central effects (sympatho-excitation, vagal withdrawal, stimulation of corticotropin releasing factor), collectively resembling a stress reaction.
1386 10596369 Panhypopituitarism was diagnosed after measuring the basal hormone levels (ACTH, TSH, FT3, FT4, Cortisol, Prolactin, LH, FSH, ADH) and conducting the pituitary stimulation test.
1387 10596369 The present case report is the first description of a viral infection on of the central nervous system (CNS) in combination with parkinsonism, diabetes insipidus, persistent panhypopituitarism and hyperprolactinemia.
1388 10604121 The Cushing's syndrome diagnosis due to rare ectopic neuroendocrine tumour adrenocorticotropic hormone secretion can be made only with selective angiography, whereas non-functional and pancreatic polypeptide producing neuroendocrine tumours (PPoma) present without any symptoms.
1389 10606438 An accumulation of evidence implicates leptin, insulin, glucocorticoids, proopiomelanocortin (POMC), and neuropeptide Y (NPY) interactions as being integral to metabolic control associated with neuroendocrine-endocrine functioning.
1390 10626548 African-American and Caribbean-Hispanic girls with premature adrenarche are frequently obese with marked hyperandrogenism, signs which correlate with the degree of insulin resistance (i.e., those girls who are obese and insulin resistant tend to have higher levels of adrenocorticotropic hormone-stimulated androgens).
1391 10640899 ACTH receptor gene analysis revealed no mutations in the ACTH receptor-coding region.
1392 10657511 Neuropeptide Y (NPY), melanin concentrating hormone (MCH), orexins A and B, galanin, and agouti -related peptide (AgRP) all act to stimulate feeding while alpha-melanocyte stimulating hormone (alphaMSH), corticotropin releasing hormone (CRH), cholecystokinin (CCK), cocaine and amphetamine regulated transcript (CART), neurotensin, glucagon-like peptide 1 (GLP 1), and bombesin have anorectic actions.(1) Leptin, expressed in the periphery in white adipose tissue, acts in the CNS to modulate the expression of several of these hypothalamic peptides.(1) This creates a functional link between the adipose tissue and the brain that translates the information on body fat provided by leptin to input into energy balance regulating processes.
1393 10657511 In the current review we examine the significant role of the melanocortin system (alphaMSH, agouti and AgRP peptides, and their receptors and mahogany protein) and melanin concentrating hormone in the regulation of energy balance.
1394 10661502 In addition, we examined ACTH secretion following CRF administration in vivo and in vitro to characterize the mechanisms regulating the HPA axis in OLETF rats.
1395 10661502 Plasma ACTH levels following CRF (2 microg/kg, i.v.) in OLETF and LETO rats showed statistically significant increases at 10 and 30 min after CRF administration compared to ACTH levels at 0 min, however, the peak plasma ACTH level in OLETF rats at 10 min after CRF administration was significantly greater than in LETO rats.
1396 10661502 CRF (10 ng/ml) significantly increased ACTH secretion in pituitary cultures from OLETF compared to LETO rats.
1397 10661502 In addition, we examined ACTH secretion following CRF administration in vivo and in vitro to characterize the mechanisms regulating the HPA axis in OLETF rats.
1398 10661502 Plasma ACTH levels following CRF (2 microg/kg, i.v.) in OLETF and LETO rats showed statistically significant increases at 10 and 30 min after CRF administration compared to ACTH levels at 0 min, however, the peak plasma ACTH level in OLETF rats at 10 min after CRF administration was significantly greater than in LETO rats.
1399 10661502 CRF (10 ng/ml) significantly increased ACTH secretion in pituitary cultures from OLETF compared to LETO rats.
1400 10661502 In addition, we examined ACTH secretion following CRF administration in vivo and in vitro to characterize the mechanisms regulating the HPA axis in OLETF rats.
1401 10661502 Plasma ACTH levels following CRF (2 microg/kg, i.v.) in OLETF and LETO rats showed statistically significant increases at 10 and 30 min after CRF administration compared to ACTH levels at 0 min, however, the peak plasma ACTH level in OLETF rats at 10 min after CRF administration was significantly greater than in LETO rats.
1402 10661502 CRF (10 ng/ml) significantly increased ACTH secretion in pituitary cultures from OLETF compared to LETO rats.
1403 10671817 Basal levels of adrenocorticotropic hormone, cortisol, growth hormone, insulin-like growth factor-I, prolactin, glucagon, estradiol, progesterone, human placental lactogen and human chorionic gonadotropin were investigated in 15 nonobese women with GDM and 26 matched normal pregnant women (N).
1404 10754162 Adrenocorticotropic hormone-independent macronodular adrenal hyperplasia (AIMAH) was endocrinologically and histopathologically diagnosed.
1405 10768826 Natriuretic peptides (ANP, BNP and CNP) comprise a family of structurally related peptides, which are derived from three different genes and which share a 17-amino acid internal ring.
1406 10768826 Besides their peripheral involvement in diuresis and blood pressure regulation these peptides, their bioactive fragments and their corresponding receptors (natriuretic peptide receptors NPR-A, NPR-B and NPR-C) are found throughout the central nervous system (CNS): NPR-A and NPR-C are found on neurons and astrocytes, while NPR-B is located mainly on neurons and partially colocalizes with NPR-A.
1407 10768826 In the CNS of man and rodents NPR-A is found mainly in cortex and hippocampus, whereas NPR-B is present in the amygdala and several brainstem regulatory sites.
1408 10768826 Natriuretic peptides are specifically involved in the regulation of the hypothalamo-pituitary-adrenocortical (HPA) system: in man and rodents ANP inhibits the HPA system at all regulatory levels, while CNP stimulates the release of cortisol.
1409 10768826 Complementarily, the anatomic structure of natriuretic peptide systems within the CNS supports an important role for these in normal and pathologic emotional behaviour (e.g. anxiety and panic): in rodents ANP was found to reduce anxiety levels, whereas CNP induced the opposite effect.
1410 10768826 Moreover, panic anxiety and concomitant ACTH and cortisol secretion elicited by stimulation with the panicogen cholecystokinin-tetrapeptide were also attenuated by ANP infusions in patients as well as in healthy volunteers.
1411 10768834 This study was designed to analyze the sequence and the expression of CRF-BP mRNA in ACTH-secreting pituitary adenomas.
1412 10768834 However, using a semiquantitative PCR approach coamplifying the house-keeping gene GAPDH we detected a reduced expression of CRF-BP mRNA in ACTH-secreting pituitary adenomas when compared with normal pituitaries.
1413 10768834 We suggest that the decreased CRF-BP gene expression in ACTH-secreting pituitary adenomas is most likely an effect due to high cortisol levels in Cushing patients.
1414 10768834 This study was designed to analyze the sequence and the expression of CRF-BP mRNA in ACTH-secreting pituitary adenomas.
1415 10768834 However, using a semiquantitative PCR approach coamplifying the house-keeping gene GAPDH we detected a reduced expression of CRF-BP mRNA in ACTH-secreting pituitary adenomas when compared with normal pituitaries.
1416 10768834 We suggest that the decreased CRF-BP gene expression in ACTH-secreting pituitary adenomas is most likely an effect due to high cortisol levels in Cushing patients.
1417 10768834 This study was designed to analyze the sequence and the expression of CRF-BP mRNA in ACTH-secreting pituitary adenomas.
1418 10768834 However, using a semiquantitative PCR approach coamplifying the house-keeping gene GAPDH we detected a reduced expression of CRF-BP mRNA in ACTH-secreting pituitary adenomas when compared with normal pituitaries.
1419 10768834 We suggest that the decreased CRF-BP gene expression in ACTH-secreting pituitary adenomas is most likely an effect due to high cortisol levels in Cushing patients.
1420 10800764 Multiple pituitary hormone hypersecretions have been already described, but the combination of PRL and ACTH excess is rare.
1421 10800764 The patient reported seems atypical for the following reasons: 1) the concomitant PRL and ACTH hypersecretions; 2) the clinical presentation with hypercortisolism following hyperprolactinemia; 3) the surgical cure of hypercortisolism with persisting hyperprolactinemia.
1422 10800764 Multiple pituitary hormone hypersecretions have been already described, but the combination of PRL and ACTH excess is rare.
1423 10800764 The patient reported seems atypical for the following reasons: 1) the concomitant PRL and ACTH hypersecretions; 2) the clinical presentation with hypercortisolism following hyperprolactinemia; 3) the surgical cure of hypercortisolism with persisting hyperprolactinemia.
1424 10816641 Emphasis on PC1, PC2/7B2, POMC and the novel enzyme SKI-1.
1425 10816641 Processing of POMC at dibasic residues is tissue-specific and is performed by either PC1 alone (resulting in ACTH and beta LPH, anterior pituitary corticotrophes) or by a combination of PC1 and PC2 (yielding alpha MSH and beta END, pituitary neurointermediate lobe and hypothalamus).
1426 10816641 Structure-function studies of these enzymes demonstrated the presence of N- and C-terminal domains, as well as specific amino acids within the catalytic segment that influence the degree of activity of each enzyme and the interaction of PC2 with 7B2.
1427 10816641 The phenotypic consequences of the absence of genetic expression of either PC1 or PC2 are now explored using knockout mice and in human patients suffering from obesity and diabetes.
1428 10816641 Emphasis on PC1, PC2/7B2, POMC and the novel enzyme SKI-1.
1429 10816641 Processing of POMC at dibasic residues is tissue-specific and is performed by either PC1 alone (resulting in ACTH and beta LPH, anterior pituitary corticotrophes) or by a combination of PC1 and PC2 (yielding alpha MSH and beta END, pituitary neurointermediate lobe and hypothalamus).
1430 10816641 Structure-function studies of these enzymes demonstrated the presence of N- and C-terminal domains, as well as specific amino acids within the catalytic segment that influence the degree of activity of each enzyme and the interaction of PC2 with 7B2.
1431 10816641 The phenotypic consequences of the absence of genetic expression of either PC1 or PC2 are now explored using knockout mice and in human patients suffering from obesity and diabetes.
1432 10822340 Treatment of rats or monkeys with the novel CRH receptor type 1 (CRH-R1) antagonist antalarmin inhibits the HPA and/or the SA/SS axes.
1433 10822340 Expression of CRH, ACTH, CRH type I and type II receptor mRNA were analyzed by reverse-transcription (RT) PCR.
1434 10822340 ACTH, CRH, and CRH-R1 and CRH-R2 mRNAs were expressed in the human adrenal as determined by RT-PCR.
1435 10822340 CRH, ACTH, and both CRH-R1 and CRH-R2 mRNAs are expressed in the adult human adrenal gland.
1436 10822340 This effect is blocked by antalarmin, a selective CRH-R1 receptor antagonist, suggesting that CRH-R1 receptors are involved in an intraadrenal CRH/ACTH control system in humans.
1437 10822340 Treatment of rats or monkeys with the novel CRH receptor type 1 (CRH-R1) antagonist antalarmin inhibits the HPA and/or the SA/SS axes.
1438 10822340 Expression of CRH, ACTH, CRH type I and type II receptor mRNA were analyzed by reverse-transcription (RT) PCR.
1439 10822340 ACTH, CRH, and CRH-R1 and CRH-R2 mRNAs were expressed in the human adrenal as determined by RT-PCR.
1440 10822340 CRH, ACTH, and both CRH-R1 and CRH-R2 mRNAs are expressed in the adult human adrenal gland.
1441 10822340 This effect is blocked by antalarmin, a selective CRH-R1 receptor antagonist, suggesting that CRH-R1 receptors are involved in an intraadrenal CRH/ACTH control system in humans.
1442 10822340 Treatment of rats or monkeys with the novel CRH receptor type 1 (CRH-R1) antagonist antalarmin inhibits the HPA and/or the SA/SS axes.
1443 10822340 Expression of CRH, ACTH, CRH type I and type II receptor mRNA were analyzed by reverse-transcription (RT) PCR.
1444 10822340 ACTH, CRH, and CRH-R1 and CRH-R2 mRNAs were expressed in the human adrenal as determined by RT-PCR.
1445 10822340 CRH, ACTH, and both CRH-R1 and CRH-R2 mRNAs are expressed in the adult human adrenal gland.
1446 10822340 This effect is blocked by antalarmin, a selective CRH-R1 receptor antagonist, suggesting that CRH-R1 receptors are involved in an intraadrenal CRH/ACTH control system in humans.
1447 10822340 Treatment of rats or monkeys with the novel CRH receptor type 1 (CRH-R1) antagonist antalarmin inhibits the HPA and/or the SA/SS axes.
1448 10822340 Expression of CRH, ACTH, CRH type I and type II receptor mRNA were analyzed by reverse-transcription (RT) PCR.
1449 10822340 ACTH, CRH, and CRH-R1 and CRH-R2 mRNAs were expressed in the human adrenal as determined by RT-PCR.
1450 10822340 CRH, ACTH, and both CRH-R1 and CRH-R2 mRNAs are expressed in the adult human adrenal gland.
1451 10822340 This effect is blocked by antalarmin, a selective CRH-R1 receptor antagonist, suggesting that CRH-R1 receptors are involved in an intraadrenal CRH/ACTH control system in humans.
1452 10868932 We investigated which hypothalamic areas known to express MC4R are involved in the regulation of feeding by using alpha-melanocyte-stimulating hormone (alpha-MSH), an endogenous MC4R agonist, and agouti-related peptide (Agrp), an endogenous MC4R antagonist.
1453 10868932 Agrp (83-132) (0.1 nmol) and [Nle4, D-Phe7]alpha(-MSH (NDP-MSH) (0.1 nmol), a stable alpha-MSH analog, were administered to fed and fasted rats, respectively.
1454 10868932 The PVN, DMN, and MPO were the areas with the greatest response to Agrp and NDP-MSH.
1455 10868932 This study indicates that the hypothalamic nuclei expressing MC4R vary in their sensitivity to Agrp and alpha-MSH with regard to their effect on feeding.
1456 10868932 We investigated which hypothalamic areas known to express MC4R are involved in the regulation of feeding by using alpha-melanocyte-stimulating hormone (alpha-MSH), an endogenous MC4R agonist, and agouti-related peptide (Agrp), an endogenous MC4R antagonist.
1457 10868932 Agrp (83-132) (0.1 nmol) and [Nle4, D-Phe7]alpha(-MSH (NDP-MSH) (0.1 nmol), a stable alpha-MSH analog, were administered to fed and fasted rats, respectively.
1458 10868932 The PVN, DMN, and MPO were the areas with the greatest response to Agrp and NDP-MSH.
1459 10868932 This study indicates that the hypothalamic nuclei expressing MC4R vary in their sensitivity to Agrp and alpha-MSH with regard to their effect on feeding.
1460 10868932 We investigated which hypothalamic areas known to express MC4R are involved in the regulation of feeding by using alpha-melanocyte-stimulating hormone (alpha-MSH), an endogenous MC4R agonist, and agouti-related peptide (Agrp), an endogenous MC4R antagonist.
1461 10868932 Agrp (83-132) (0.1 nmol) and [Nle4, D-Phe7]alpha(-MSH (NDP-MSH) (0.1 nmol), a stable alpha-MSH analog, were administered to fed and fasted rats, respectively.
1462 10868932 The PVN, DMN, and MPO were the areas with the greatest response to Agrp and NDP-MSH.
1463 10868932 This study indicates that the hypothalamic nuclei expressing MC4R vary in their sensitivity to Agrp and alpha-MSH with regard to their effect on feeding.
1464 10868941 Effects of streptozotocin-induced diabetes and insulin treatment on the hypothalamic melanocortin system and muscle uncoupling protein 3 expression in rats.
1465 10868941 Agonists for melanocortin 4 (MC-4) receptors such as alpha-melanocyte-stimulating hormone (alpha-MSH), a product of proopiomelanocortin (POMC), reduce food intake, whereas hypothalamic agouti-related protein (AgRP) is a MC-4 receptor antagonist that increases food intake.
1466 10868941 Plasma leptin was markedly reduced in STZ diabetic rats (0.4 +/- 0.1 ng/ml; P < 0.005) compared with controls (3.0 +/- 0.4 ng/ml), an effect that was also partially reversed by insulin treatment (1.8 +/- 0.3 ng/ml).
1467 10868941 In untreated diabetic rats, hypothalamic POMC mRNA expression (measured by in situ hybridization) was reduced by 80% (P < 0.005), whereas AgRP mRNA levels were increased by 60% (P < 0.01), suggesting a marked decrease of hypothalamic melanocortin signaling.
1468 10868941 The change in POMC, but not in AgRP, mRNA levels was partially reversed by insulin treatment.
1469 10868941 By comparison, the effects of diabetes to increase hypothalamic neuropeptide Y (NPY) expression and to decrease corticotropin-releasing hormone (CRH) expression were normalized by insulin treatment, whereas the expression of mRNA encoding the long form of the leptin receptor in the arcuate nucleus was unaltered by diabetes or insulin treatment.
1470 10868941 UCP-3 mRNA expression in gastrocnemius muscle from diabetic rats was increased fourfold (P < 0.005), and the increase was prevented by insulin treatment.
1471 10868941 The effect of uncontrolled diabetes to decrease POMC, while increasing AgRP gene expression, suggests that reduced hypothalamic melanocortin signaling, along with increased NPY and decreased CRH signaling, could contribute to diabetic hyperphagia.
1472 10868941 Effects of streptozotocin-induced diabetes and insulin treatment on the hypothalamic melanocortin system and muscle uncoupling protein 3 expression in rats.
1473 10868941 Agonists for melanocortin 4 (MC-4) receptors such as alpha-melanocyte-stimulating hormone (alpha-MSH), a product of proopiomelanocortin (POMC), reduce food intake, whereas hypothalamic agouti-related protein (AgRP) is a MC-4 receptor antagonist that increases food intake.
1474 10868941 Plasma leptin was markedly reduced in STZ diabetic rats (0.4 +/- 0.1 ng/ml; P < 0.005) compared with controls (3.0 +/- 0.4 ng/ml), an effect that was also partially reversed by insulin treatment (1.8 +/- 0.3 ng/ml).
1475 10868941 In untreated diabetic rats, hypothalamic POMC mRNA expression (measured by in situ hybridization) was reduced by 80% (P < 0.005), whereas AgRP mRNA levels were increased by 60% (P < 0.01), suggesting a marked decrease of hypothalamic melanocortin signaling.
1476 10868941 The change in POMC, but not in AgRP, mRNA levels was partially reversed by insulin treatment.
1477 10868941 By comparison, the effects of diabetes to increase hypothalamic neuropeptide Y (NPY) expression and to decrease corticotropin-releasing hormone (CRH) expression were normalized by insulin treatment, whereas the expression of mRNA encoding the long form of the leptin receptor in the arcuate nucleus was unaltered by diabetes or insulin treatment.
1478 10868941 UCP-3 mRNA expression in gastrocnemius muscle from diabetic rats was increased fourfold (P < 0.005), and the increase was prevented by insulin treatment.
1479 10868941 The effect of uncontrolled diabetes to decrease POMC, while increasing AgRP gene expression, suggests that reduced hypothalamic melanocortin signaling, along with increased NPY and decreased CRH signaling, could contribute to diabetic hyperphagia.
1480 10868941 Effects of streptozotocin-induced diabetes and insulin treatment on the hypothalamic melanocortin system and muscle uncoupling protein 3 expression in rats.
1481 10868941 Agonists for melanocortin 4 (MC-4) receptors such as alpha-melanocyte-stimulating hormone (alpha-MSH), a product of proopiomelanocortin (POMC), reduce food intake, whereas hypothalamic agouti-related protein (AgRP) is a MC-4 receptor antagonist that increases food intake.
1482 10868941 Plasma leptin was markedly reduced in STZ diabetic rats (0.4 +/- 0.1 ng/ml; P < 0.005) compared with controls (3.0 +/- 0.4 ng/ml), an effect that was also partially reversed by insulin treatment (1.8 +/- 0.3 ng/ml).
1483 10868941 In untreated diabetic rats, hypothalamic POMC mRNA expression (measured by in situ hybridization) was reduced by 80% (P < 0.005), whereas AgRP mRNA levels were increased by 60% (P < 0.01), suggesting a marked decrease of hypothalamic melanocortin signaling.
1484 10868941 The change in POMC, but not in AgRP, mRNA levels was partially reversed by insulin treatment.
1485 10868941 By comparison, the effects of diabetes to increase hypothalamic neuropeptide Y (NPY) expression and to decrease corticotropin-releasing hormone (CRH) expression were normalized by insulin treatment, whereas the expression of mRNA encoding the long form of the leptin receptor in the arcuate nucleus was unaltered by diabetes or insulin treatment.
1486 10868941 UCP-3 mRNA expression in gastrocnemius muscle from diabetic rats was increased fourfold (P < 0.005), and the increase was prevented by insulin treatment.
1487 10868941 The effect of uncontrolled diabetes to decrease POMC, while increasing AgRP gene expression, suggests that reduced hypothalamic melanocortin signaling, along with increased NPY and decreased CRH signaling, could contribute to diabetic hyperphagia.
1488 10868941 Effects of streptozotocin-induced diabetes and insulin treatment on the hypothalamic melanocortin system and muscle uncoupling protein 3 expression in rats.
1489 10868941 Agonists for melanocortin 4 (MC-4) receptors such as alpha-melanocyte-stimulating hormone (alpha-MSH), a product of proopiomelanocortin (POMC), reduce food intake, whereas hypothalamic agouti-related protein (AgRP) is a MC-4 receptor antagonist that increases food intake.
1490 10868941 Plasma leptin was markedly reduced in STZ diabetic rats (0.4 +/- 0.1 ng/ml; P < 0.005) compared with controls (3.0 +/- 0.4 ng/ml), an effect that was also partially reversed by insulin treatment (1.8 +/- 0.3 ng/ml).
1491 10868941 In untreated diabetic rats, hypothalamic POMC mRNA expression (measured by in situ hybridization) was reduced by 80% (P < 0.005), whereas AgRP mRNA levels were increased by 60% (P < 0.01), suggesting a marked decrease of hypothalamic melanocortin signaling.
1492 10868941 The change in POMC, but not in AgRP, mRNA levels was partially reversed by insulin treatment.
1493 10868941 By comparison, the effects of diabetes to increase hypothalamic neuropeptide Y (NPY) expression and to decrease corticotropin-releasing hormone (CRH) expression were normalized by insulin treatment, whereas the expression of mRNA encoding the long form of the leptin receptor in the arcuate nucleus was unaltered by diabetes or insulin treatment.
1494 10868941 UCP-3 mRNA expression in gastrocnemius muscle from diabetic rats was increased fourfold (P < 0.005), and the increase was prevented by insulin treatment.
1495 10868941 The effect of uncontrolled diabetes to decrease POMC, while increasing AgRP gene expression, suggests that reduced hypothalamic melanocortin signaling, along with increased NPY and decreased CRH signaling, could contribute to diabetic hyperphagia.
1496 10892287 Mutations in plasma membrane are involved in a large number of clinical disorders, including dwarfism, Laron syndrome, congenital hyperthyroidism or hypothyroidism, nephrogenic diabetes insipidus, resistance to TSH, LH, FSH and ACTH, Jansen's metaphyseal chondrodysplasia and autosomal dominant hypoparathyroidism.
1497 10904142 alpha-Melanocyte stimulating hormone prevents fasting-induced suppression of corticotropin-releasing hormone gene expression in the rat hypothalamic paraventricular nucleus.
1498 10904142 To test the hypothesis that the melanocortin system may be involved in the regulation of CRH mRNA in the PVN during fasting, the effect of intracerebroventricularly administered alpha-melanocyte stimulating hormone (MSH) on CRH mRNA in the PVN was studied in fasted animals by in situ hybridization histochemistry.
1499 10904142 Whereas fasting suppressed CRH mRNA levels in the PVN, alpha-MSH at doses of 150 and 300 ng every 6 h for 64 h prevented the fasting-induced suppression of CRH gene expression in the PVN.
1500 10904142 These data indicate that the suppression of alpha-MSH synthesis may be responsible for the decreased CRH gene expression in the PVN during fasting.
1501 10904142 alpha-Melanocyte stimulating hormone prevents fasting-induced suppression of corticotropin-releasing hormone gene expression in the rat hypothalamic paraventricular nucleus.
1502 10904142 To test the hypothesis that the melanocortin system may be involved in the regulation of CRH mRNA in the PVN during fasting, the effect of intracerebroventricularly administered alpha-melanocyte stimulating hormone (MSH) on CRH mRNA in the PVN was studied in fasted animals by in situ hybridization histochemistry.
1503 10904142 Whereas fasting suppressed CRH mRNA levels in the PVN, alpha-MSH at doses of 150 and 300 ng every 6 h for 64 h prevented the fasting-induced suppression of CRH gene expression in the PVN.
1504 10904142 These data indicate that the suppression of alpha-MSH synthesis may be responsible for the decreased CRH gene expression in the PVN during fasting.
1505 10904142 alpha-Melanocyte stimulating hormone prevents fasting-induced suppression of corticotropin-releasing hormone gene expression in the rat hypothalamic paraventricular nucleus.
1506 10904142 To test the hypothesis that the melanocortin system may be involved in the regulation of CRH mRNA in the PVN during fasting, the effect of intracerebroventricularly administered alpha-melanocyte stimulating hormone (MSH) on CRH mRNA in the PVN was studied in fasted animals by in situ hybridization histochemistry.
1507 10904142 Whereas fasting suppressed CRH mRNA levels in the PVN, alpha-MSH at doses of 150 and 300 ng every 6 h for 64 h prevented the fasting-induced suppression of CRH gene expression in the PVN.
1508 10904142 These data indicate that the suppression of alpha-MSH synthesis may be responsible for the decreased CRH gene expression in the PVN during fasting.
1509 10904142 alpha-Melanocyte stimulating hormone prevents fasting-induced suppression of corticotropin-releasing hormone gene expression in the rat hypothalamic paraventricular nucleus.
1510 10904142 To test the hypothesis that the melanocortin system may be involved in the regulation of CRH mRNA in the PVN during fasting, the effect of intracerebroventricularly administered alpha-melanocyte stimulating hormone (MSH) on CRH mRNA in the PVN was studied in fasted animals by in situ hybridization histochemistry.
1511 10904142 Whereas fasting suppressed CRH mRNA levels in the PVN, alpha-MSH at doses of 150 and 300 ng every 6 h for 64 h prevented the fasting-induced suppression of CRH gene expression in the PVN.
1512 10904142 These data indicate that the suppression of alpha-MSH synthesis may be responsible for the decreased CRH gene expression in the PVN during fasting.
1513 10905492 Presumed apoptosis and reduced arcuate nucleus neuropeptide Y and pro-opiomelanocortin mRNA in non-coma hypoglycemia.
1514 10905492 In situ hybridization for neuropeptide Y (NPY) and proopiomelanocortin (POMC) mRNA was performed in sections of ARC containing maximal numbers of apoptotic cells as well as in other fresh frozen brains.
1515 10905492 After 1 bout, NPY (0.041+/-0.003) and POMC (0.119+/-0.022) mRNA were decreased, respectively, by 52 and 55% vs. controls (NPY 0.076+/-0.007; POMC 0.222+/-0.020; P = 0.01).
1516 10905492 NPY (0.029+/-0.002) but not POMC (0.093+/-0.013) fell 29% further after a third bout.
1517 10905492 NPY (r = -0.721; P = 0.001) and POMC (r = -0.756; P = 0.001) mRNA levels correlated negatively with the number of apoptotic ARC cells in the same sections.
1518 10905492 Thus, non-coma hypoglycemia produces apparent apoptotic cell death with reduced NPY and POMC expression selectively in the ARC.
1519 10905492 Presumed apoptosis and reduced arcuate nucleus neuropeptide Y and pro-opiomelanocortin mRNA in non-coma hypoglycemia.
1520 10905492 In situ hybridization for neuropeptide Y (NPY) and proopiomelanocortin (POMC) mRNA was performed in sections of ARC containing maximal numbers of apoptotic cells as well as in other fresh frozen brains.
1521 10905492 After 1 bout, NPY (0.041+/-0.003) and POMC (0.119+/-0.022) mRNA were decreased, respectively, by 52 and 55% vs. controls (NPY 0.076+/-0.007; POMC 0.222+/-0.020; P = 0.01).
1522 10905492 NPY (0.029+/-0.002) but not POMC (0.093+/-0.013) fell 29% further after a third bout.
1523 10905492 NPY (r = -0.721; P = 0.001) and POMC (r = -0.756; P = 0.001) mRNA levels correlated negatively with the number of apoptotic ARC cells in the same sections.
1524 10905492 Thus, non-coma hypoglycemia produces apparent apoptotic cell death with reduced NPY and POMC expression selectively in the ARC.
1525 10905492 Presumed apoptosis and reduced arcuate nucleus neuropeptide Y and pro-opiomelanocortin mRNA in non-coma hypoglycemia.
1526 10905492 In situ hybridization for neuropeptide Y (NPY) and proopiomelanocortin (POMC) mRNA was performed in sections of ARC containing maximal numbers of apoptotic cells as well as in other fresh frozen brains.
1527 10905492 After 1 bout, NPY (0.041+/-0.003) and POMC (0.119+/-0.022) mRNA were decreased, respectively, by 52 and 55% vs. controls (NPY 0.076+/-0.007; POMC 0.222+/-0.020; P = 0.01).
1528 10905492 NPY (0.029+/-0.002) but not POMC (0.093+/-0.013) fell 29% further after a third bout.
1529 10905492 NPY (r = -0.721; P = 0.001) and POMC (r = -0.756; P = 0.001) mRNA levels correlated negatively with the number of apoptotic ARC cells in the same sections.
1530 10905492 Thus, non-coma hypoglycemia produces apparent apoptotic cell death with reduced NPY and POMC expression selectively in the ARC.
1531 10905492 Presumed apoptosis and reduced arcuate nucleus neuropeptide Y and pro-opiomelanocortin mRNA in non-coma hypoglycemia.
1532 10905492 In situ hybridization for neuropeptide Y (NPY) and proopiomelanocortin (POMC) mRNA was performed in sections of ARC containing maximal numbers of apoptotic cells as well as in other fresh frozen brains.
1533 10905492 After 1 bout, NPY (0.041+/-0.003) and POMC (0.119+/-0.022) mRNA were decreased, respectively, by 52 and 55% vs. controls (NPY 0.076+/-0.007; POMC 0.222+/-0.020; P = 0.01).
1534 10905492 NPY (0.029+/-0.002) but not POMC (0.093+/-0.013) fell 29% further after a third bout.
1535 10905492 NPY (r = -0.721; P = 0.001) and POMC (r = -0.756; P = 0.001) mRNA levels correlated negatively with the number of apoptotic ARC cells in the same sections.
1536 10905492 Thus, non-coma hypoglycemia produces apparent apoptotic cell death with reduced NPY and POMC expression selectively in the ARC.
1537 10905492 Presumed apoptosis and reduced arcuate nucleus neuropeptide Y and pro-opiomelanocortin mRNA in non-coma hypoglycemia.
1538 10905492 In situ hybridization for neuropeptide Y (NPY) and proopiomelanocortin (POMC) mRNA was performed in sections of ARC containing maximal numbers of apoptotic cells as well as in other fresh frozen brains.
1539 10905492 After 1 bout, NPY (0.041+/-0.003) and POMC (0.119+/-0.022) mRNA were decreased, respectively, by 52 and 55% vs. controls (NPY 0.076+/-0.007; POMC 0.222+/-0.020; P = 0.01).
1540 10905492 NPY (0.029+/-0.002) but not POMC (0.093+/-0.013) fell 29% further after a third bout.
1541 10905492 NPY (r = -0.721; P = 0.001) and POMC (r = -0.756; P = 0.001) mRNA levels correlated negatively with the number of apoptotic ARC cells in the same sections.
1542 10905492 Thus, non-coma hypoglycemia produces apparent apoptotic cell death with reduced NPY and POMC expression selectively in the ARC.
1543 10905492 Presumed apoptosis and reduced arcuate nucleus neuropeptide Y and pro-opiomelanocortin mRNA in non-coma hypoglycemia.
1544 10905492 In situ hybridization for neuropeptide Y (NPY) and proopiomelanocortin (POMC) mRNA was performed in sections of ARC containing maximal numbers of apoptotic cells as well as in other fresh frozen brains.
1545 10905492 After 1 bout, NPY (0.041+/-0.003) and POMC (0.119+/-0.022) mRNA were decreased, respectively, by 52 and 55% vs. controls (NPY 0.076+/-0.007; POMC 0.222+/-0.020; P = 0.01).
1546 10905492 NPY (0.029+/-0.002) but not POMC (0.093+/-0.013) fell 29% further after a third bout.
1547 10905492 NPY (r = -0.721; P = 0.001) and POMC (r = -0.756; P = 0.001) mRNA levels correlated negatively with the number of apoptotic ARC cells in the same sections.
1548 10905492 Thus, non-coma hypoglycemia produces apparent apoptotic cell death with reduced NPY and POMC expression selectively in the ARC.
1549 10909960 Leptin, expressed in adipose tissue, mediates some of its actions through several hypothalamic neuropeptides, notably agouti-related peptide, proopiomelanocortin, and neuropeptide Y.
1550 10909960 Expression of leptin is regulated by dietary status, insulin, and glucocorticoids.
1551 10909960 We report that MCH stimulates leptin mRNA expression and leptin secretion.
1552 10909960 MCH stimulated a 2-fold increase in leptin secretion by isolated rat adipocytes after 4 h of treatment.
1553 10909960 This increase in secreted leptin was preceded by a rapid and transient increase in ob mRNA levels; MCH stimulated a 2.5-fold increase in ob mRNA within 1 h of treatment, followed by a decline to basal levels within 4 h.
1554 10909960 In addition, we demonstrate that the MCH receptor SLC-1 is expressed in adipocytes, suggesting that fat cells may be targets of MCH or an MCH-like peptide under physiological conditions.
1555 10926317 Interleukin-6 is inhibited by glucocorticoids and stimulates ACTH secretion and POMC expression in human corticotroph pituitary adenomas.
1556 10926317 Here we examined the effects of IL-6 on propiomelanocortin (POMC) expression and ACTH production in corticotroph adenoma cells in vitro.
1557 10926317 We found that IL-6 stimulates both ACTH secretion and POMC gene expression in corticotroph adenoma cell cultures.
1558 10926317 This intratumoral produced IL-6 may be in part responsible, in an autocrine manner, for the stimulation of ACTH synthesis and secretion.
1559 10926317 However, elevated glucocorticoid levels in patients with Cushing's disease may prevent excessive action of IL-6 on ACTH production and tumor progression of corticotroph adenomas in vivo.
1560 10926317 Interleukin-6 is inhibited by glucocorticoids and stimulates ACTH secretion and POMC expression in human corticotroph pituitary adenomas.
1561 10926317 Here we examined the effects of IL-6 on propiomelanocortin (POMC) expression and ACTH production in corticotroph adenoma cells in vitro.
1562 10926317 We found that IL-6 stimulates both ACTH secretion and POMC gene expression in corticotroph adenoma cell cultures.
1563 10926317 This intratumoral produced IL-6 may be in part responsible, in an autocrine manner, for the stimulation of ACTH synthesis and secretion.
1564 10926317 However, elevated glucocorticoid levels in patients with Cushing's disease may prevent excessive action of IL-6 on ACTH production and tumor progression of corticotroph adenomas in vivo.
1565 10926317 Interleukin-6 is inhibited by glucocorticoids and stimulates ACTH secretion and POMC expression in human corticotroph pituitary adenomas.
1566 10926317 Here we examined the effects of IL-6 on propiomelanocortin (POMC) expression and ACTH production in corticotroph adenoma cells in vitro.
1567 10926317 We found that IL-6 stimulates both ACTH secretion and POMC gene expression in corticotroph adenoma cell cultures.
1568 10926317 This intratumoral produced IL-6 may be in part responsible, in an autocrine manner, for the stimulation of ACTH synthesis and secretion.
1569 10926317 However, elevated glucocorticoid levels in patients with Cushing's disease may prevent excessive action of IL-6 on ACTH production and tumor progression of corticotroph adenomas in vivo.
1570 10926317 Interleukin-6 is inhibited by glucocorticoids and stimulates ACTH secretion and POMC expression in human corticotroph pituitary adenomas.
1571 10926317 Here we examined the effects of IL-6 on propiomelanocortin (POMC) expression and ACTH production in corticotroph adenoma cells in vitro.
1572 10926317 We found that IL-6 stimulates both ACTH secretion and POMC gene expression in corticotroph adenoma cell cultures.
1573 10926317 This intratumoral produced IL-6 may be in part responsible, in an autocrine manner, for the stimulation of ACTH synthesis and secretion.
1574 10926317 However, elevated glucocorticoid levels in patients with Cushing's disease may prevent excessive action of IL-6 on ACTH production and tumor progression of corticotroph adenomas in vivo.
1575 10926317 Interleukin-6 is inhibited by glucocorticoids and stimulates ACTH secretion and POMC expression in human corticotroph pituitary adenomas.
1576 10926317 Here we examined the effects of IL-6 on propiomelanocortin (POMC) expression and ACTH production in corticotroph adenoma cells in vitro.
1577 10926317 We found that IL-6 stimulates both ACTH secretion and POMC gene expression in corticotroph adenoma cell cultures.
1578 10926317 This intratumoral produced IL-6 may be in part responsible, in an autocrine manner, for the stimulation of ACTH synthesis and secretion.
1579 10926317 However, elevated glucocorticoid levels in patients with Cushing's disease may prevent excessive action of IL-6 on ACTH production and tumor progression of corticotroph adenomas in vivo.
1580 10989958 The investigation was conducted to study the effects of endothelin-1 (ET-1) and endothelin-3 (ET-3) on adrenocorticotropin (ACTH), cortisol and prolactin release in man.
1581 10989958 After infusion of either 20 ng/min x kg ET-1, ET-3 or normal saline, venous blood samples were drawn 12 times for determination of ACTH, cortisol and prolactin during the pre- within- and postinfusion period.
1582 10989958 ET-1 infusion induced a significant increase of plasma ACTH (p< 0.009) and prolactin (p<0.0001) whereas cortisol levels increased without reaching significance (p<0.074).
1583 10989958 Infusion of ET-3 induced no changes in plasma levels of ACTH, cortisol or prolactin.
1584 10989958 The parallel increase of ACTH and prolactin induced by infusion of ET-1 could indicate an involvement of corticotropin-releasing hormone (CRH) in mediating the ET-1 effect on the HPA-axis in man.
1585 10989958 The investigation was conducted to study the effects of endothelin-1 (ET-1) and endothelin-3 (ET-3) on adrenocorticotropin (ACTH), cortisol and prolactin release in man.
1586 10989958 After infusion of either 20 ng/min x kg ET-1, ET-3 or normal saline, venous blood samples were drawn 12 times for determination of ACTH, cortisol and prolactin during the pre- within- and postinfusion period.
1587 10989958 ET-1 infusion induced a significant increase of plasma ACTH (p< 0.009) and prolactin (p<0.0001) whereas cortisol levels increased without reaching significance (p<0.074).
1588 10989958 Infusion of ET-3 induced no changes in plasma levels of ACTH, cortisol or prolactin.
1589 10989958 The parallel increase of ACTH and prolactin induced by infusion of ET-1 could indicate an involvement of corticotropin-releasing hormone (CRH) in mediating the ET-1 effect on the HPA-axis in man.
1590 10989958 The investigation was conducted to study the effects of endothelin-1 (ET-1) and endothelin-3 (ET-3) on adrenocorticotropin (ACTH), cortisol and prolactin release in man.
1591 10989958 After infusion of either 20 ng/min x kg ET-1, ET-3 or normal saline, venous blood samples were drawn 12 times for determination of ACTH, cortisol and prolactin during the pre- within- and postinfusion period.
1592 10989958 ET-1 infusion induced a significant increase of plasma ACTH (p< 0.009) and prolactin (p<0.0001) whereas cortisol levels increased without reaching significance (p<0.074).
1593 10989958 Infusion of ET-3 induced no changes in plasma levels of ACTH, cortisol or prolactin.
1594 10989958 The parallel increase of ACTH and prolactin induced by infusion of ET-1 could indicate an involvement of corticotropin-releasing hormone (CRH) in mediating the ET-1 effect on the HPA-axis in man.
1595 10989958 The investigation was conducted to study the effects of endothelin-1 (ET-1) and endothelin-3 (ET-3) on adrenocorticotropin (ACTH), cortisol and prolactin release in man.
1596 10989958 After infusion of either 20 ng/min x kg ET-1, ET-3 or normal saline, venous blood samples were drawn 12 times for determination of ACTH, cortisol and prolactin during the pre- within- and postinfusion period.
1597 10989958 ET-1 infusion induced a significant increase of plasma ACTH (p< 0.009) and prolactin (p<0.0001) whereas cortisol levels increased without reaching significance (p<0.074).
1598 10989958 Infusion of ET-3 induced no changes in plasma levels of ACTH, cortisol or prolactin.
1599 10989958 The parallel increase of ACTH and prolactin induced by infusion of ET-1 could indicate an involvement of corticotropin-releasing hormone (CRH) in mediating the ET-1 effect on the HPA-axis in man.
1600 10989958 The investigation was conducted to study the effects of endothelin-1 (ET-1) and endothelin-3 (ET-3) on adrenocorticotropin (ACTH), cortisol and prolactin release in man.
1601 10989958 After infusion of either 20 ng/min x kg ET-1, ET-3 or normal saline, venous blood samples were drawn 12 times for determination of ACTH, cortisol and prolactin during the pre- within- and postinfusion period.
1602 10989958 ET-1 infusion induced a significant increase of plasma ACTH (p< 0.009) and prolactin (p<0.0001) whereas cortisol levels increased without reaching significance (p<0.074).
1603 10989958 Infusion of ET-3 induced no changes in plasma levels of ACTH, cortisol or prolactin.
1604 10989958 The parallel increase of ACTH and prolactin induced by infusion of ET-1 could indicate an involvement of corticotropin-releasing hormone (CRH) in mediating the ET-1 effect on the HPA-axis in man.
1605 11024558 We also determined whether well known hypothalamic neuropeptide targets, e.g. neuropeptide Y (NPY), proopiomelanocortin (POMC), agouti-related peptide (AGRP) and cocaine and amphetamine-regulated transcript (CART) were regulated in a pattern consistent with their presumed roles as mediators of leptin action.
1606 11024558 In contrast, leptin decreased body weight and adiposity, increased CART and suppressed NPY and AGRP mRNA expression in adult mice.
1607 11078456 Unlike leptin, ciliary neurotrophic factor does not reverse the starvation-induced changes of serum corticosterone and hypothalamic neuropeptide levels but induces expression of hypothalamic inhibitors of leptin signaling.
1608 11078456 Ciliary neurotrophic factor (CNTF), a cytokine closely related to leptin, reduces food intake and reverses obesity, but its role in restoring the starvation-induced changes of hormones or hypothalamic neuropeptides remains largely unknown.
1609 11078456 To comparatively assess the roles of CNTF and leptin in reversing the starvation-induced changes of hypothalamic neuropeptides and endocrine function and in inducing expression of hypothalamic inhibitors of leptin and CNTF signaling (suppressor of cytokine signaling 3 [SOCS-3]) and mediators of energy expenditure (cyclo-oxygenase 2 [COX-2]), we studied the effect of CNTF and leptin administered by intraperitoneal injections (1 microg/g twice daily) in C57Bl/6J mice fasted for 48 h.
1610 11078456 Serum corticosterone levels increased with fasting, and leptin administration partially normalized them, whereas CNTF administration had no effect.
1611 11078456 Hypothalamic neuropeptide Y (NPY) and agouti-related protein (AgRP) mRNA expression increased and pro-opiomelanocortin (POMC) decreased in response to fasting.
1612 11078456 Leptin administration decreased NPY and AgRP and increased POMC mRNA levels toward baseline, but CNTF administration in fasted mice had no effect of comparable significance.
1613 11078456 Both leptin and CNTF administration in fasted mice resulted in an induction of SOCS-3 mRNA expression.
1614 11078456 CNTF also induced hypothalamic SOCS-2 mRNA expression.
1615 11078456 Finally, neither leptin nor CNTF administration in mice fasted for 48 h alters hypothalamic COX-2 expression.
1616 11078456 Our data suggest that only falling leptin levels mediate the starvation-induced alterations in corticosterone levels and expression of hypothalamic neuropeptides, but inhibitors of leptin signaling are induced by both leptin and CNTF.
1617 11078456 Unlike leptin, ciliary neurotrophic factor does not reverse the starvation-induced changes of serum corticosterone and hypothalamic neuropeptide levels but induces expression of hypothalamic inhibitors of leptin signaling.
1618 11078456 Ciliary neurotrophic factor (CNTF), a cytokine closely related to leptin, reduces food intake and reverses obesity, but its role in restoring the starvation-induced changes of hormones or hypothalamic neuropeptides remains largely unknown.
1619 11078456 To comparatively assess the roles of CNTF and leptin in reversing the starvation-induced changes of hypothalamic neuropeptides and endocrine function and in inducing expression of hypothalamic inhibitors of leptin and CNTF signaling (suppressor of cytokine signaling 3 [SOCS-3]) and mediators of energy expenditure (cyclo-oxygenase 2 [COX-2]), we studied the effect of CNTF and leptin administered by intraperitoneal injections (1 microg/g twice daily) in C57Bl/6J mice fasted for 48 h.
1620 11078456 Serum corticosterone levels increased with fasting, and leptin administration partially normalized them, whereas CNTF administration had no effect.
1621 11078456 Hypothalamic neuropeptide Y (NPY) and agouti-related protein (AgRP) mRNA expression increased and pro-opiomelanocortin (POMC) decreased in response to fasting.
1622 11078456 Leptin administration decreased NPY and AgRP and increased POMC mRNA levels toward baseline, but CNTF administration in fasted mice had no effect of comparable significance.
1623 11078456 Both leptin and CNTF administration in fasted mice resulted in an induction of SOCS-3 mRNA expression.
1624 11078456 CNTF also induced hypothalamic SOCS-2 mRNA expression.
1625 11078456 Finally, neither leptin nor CNTF administration in mice fasted for 48 h alters hypothalamic COX-2 expression.
1626 11078456 Our data suggest that only falling leptin levels mediate the starvation-induced alterations in corticosterone levels and expression of hypothalamic neuropeptides, but inhibitors of leptin signaling are induced by both leptin and CNTF.
1627 11078460 Relative to lean controls, ob/ob mice also exhibit decreased hypothalamic proopiomelanocortin (POMC) mRNA and increased hypothalamic agouti-related peptide (AGRP) mRNA and neuropeptide Y (NPY) mRNA.
1628 11078460 In wild-type mice, adrenalectomy significantly decreased AGRP mRNA but did not significantly influence POMC or NPY mRNA.
1629 11078460 In ob/ob mice, adrenalectomy reduced the levels of plasma glucose, serum insulin and corticosterone, and food intake toward or below wild-type levels, and it restored hypothalamic POMC and AGRP mRNA but not NPY mRNA to wild-type levels.
1630 11078460 Relative to lean controls, ob/ob mice also exhibit decreased hypothalamic proopiomelanocortin (POMC) mRNA and increased hypothalamic agouti-related peptide (AGRP) mRNA and neuropeptide Y (NPY) mRNA.
1631 11078460 In wild-type mice, adrenalectomy significantly decreased AGRP mRNA but did not significantly influence POMC or NPY mRNA.
1632 11078460 In ob/ob mice, adrenalectomy reduced the levels of plasma glucose, serum insulin and corticosterone, and food intake toward or below wild-type levels, and it restored hypothalamic POMC and AGRP mRNA but not NPY mRNA to wild-type levels.
1633 11078460 Relative to lean controls, ob/ob mice also exhibit decreased hypothalamic proopiomelanocortin (POMC) mRNA and increased hypothalamic agouti-related peptide (AGRP) mRNA and neuropeptide Y (NPY) mRNA.
1634 11078460 In wild-type mice, adrenalectomy significantly decreased AGRP mRNA but did not significantly influence POMC or NPY mRNA.
1635 11078460 In ob/ob mice, adrenalectomy reduced the levels of plasma glucose, serum insulin and corticosterone, and food intake toward or below wild-type levels, and it restored hypothalamic POMC and AGRP mRNA but not NPY mRNA to wild-type levels.
1636 11125000 Association of cocaine- and amphetamine-regulated transcript-immunoreactive elements with thyrotropin-releasing hormone-synthesizing neurons in the hypothalamic paraventricular nucleus and its role in the regulation of the hypothalamic-pituitary-thyroid axis during fasting.
1637 11125000 Because cocaine- and amphetamine-regulated transcript (CART) coexists with alpha-melanocyte stimulating hormone (alpha-MSH) in the arcuate nucleus neurons and we have recently demonstrated that alpha-MSH innervates TRH-synthesizing neurons in the hypothalamic paraventricular nucleus (PVN), we raised the possibility that CART may also be contained in fibers that innervate hypophysiotropic thyrotropin-releasing hormone (TRH) neurons and modulate TRH gene expression.
1638 11125000 Triple-labeling fluorescent in situ hybridization and immunofluorescence were performed to reveal the morphological relationships between pro-TRH mRNA-containing neurons and CART- and alpha-MSH-immunoreactive (IR) axons.
1639 11125000 In addition, >80% of TRH/CART neurons in the periventricular and medial parvocellular subdivisions accumulated Fluoro-Gold after systemic administration, suggesting that CART may serve as a marker for hypophysiotropic TRH neurons.
1640 11125000 CART prevented fasting-induced suppression of pro-TRH in the PVN when administered intracerebroventricularly and increased the content of TRH in hypothalamic cell cultures.
1641 11125000 These studies establish an anatomical association between CART and pro-TRH-producing neurons in the PVN and demonstrate that CART has a stimulatory effect on hypophysiotropic TRH neurons by increasing pro-TRH gene expression and the biosynthesis of TRH.
1642 11125000 Association of cocaine- and amphetamine-regulated transcript-immunoreactive elements with thyrotropin-releasing hormone-synthesizing neurons in the hypothalamic paraventricular nucleus and its role in the regulation of the hypothalamic-pituitary-thyroid axis during fasting.
1643 11125000 Because cocaine- and amphetamine-regulated transcript (CART) coexists with alpha-melanocyte stimulating hormone (alpha-MSH) in the arcuate nucleus neurons and we have recently demonstrated that alpha-MSH innervates TRH-synthesizing neurons in the hypothalamic paraventricular nucleus (PVN), we raised the possibility that CART may also be contained in fibers that innervate hypophysiotropic thyrotropin-releasing hormone (TRH) neurons and modulate TRH gene expression.
1644 11125000 Triple-labeling fluorescent in situ hybridization and immunofluorescence were performed to reveal the morphological relationships between pro-TRH mRNA-containing neurons and CART- and alpha-MSH-immunoreactive (IR) axons.
1645 11125000 In addition, >80% of TRH/CART neurons in the periventricular and medial parvocellular subdivisions accumulated Fluoro-Gold after systemic administration, suggesting that CART may serve as a marker for hypophysiotropic TRH neurons.
1646 11125000 CART prevented fasting-induced suppression of pro-TRH in the PVN when administered intracerebroventricularly and increased the content of TRH in hypothalamic cell cultures.
1647 11125000 These studies establish an anatomical association between CART and pro-TRH-producing neurons in the PVN and demonstrate that CART has a stimulatory effect on hypophysiotropic TRH neurons by increasing pro-TRH gene expression and the biosynthesis of TRH.
1648 11193441 The plasma concentrations of GH, TSH, LH, FSH, ACTH and ADH were low or below the detectable limits.
1649 11193441 Arginine, LH-RH, TRH and CRH tolerance tests revealed no or low responses of GH, LH/FSH, TSH, and ACTH/cortisol, respectively.
1650 11196419 There is a progressive and concurrent increase of ACTH1-39 and cortisol (F) in the circulation of fetal sheep during the last 15-20 days of pregnancy (term, day 145-150) associated with increased expression of hypothalamic CRH pituitary POMC and adrenal ACTH receptor and steroidogenic enzymes, particularly P450 C17.
1651 11272157 To better understand the function(s) of the LEPR isoforms in vivo, we generated db3J/db3J and db/db mice bearing a transgene (neuron-specific enolase [NSE]-Rb) expressing the B isoform of LEPR, the isoform capable of activating the signal transducer and activator of transcription (STAT) pathway, under the control of the neuron-specific enolase enhancer/promoter.
1652 11272157 Based on quantitative analysis of hypothalamic neuropeptide gene expression in the transgenic animals, we infer full restoration of leptin sensitivity to proopiomelanocortin (POMC) neurons, partial correction of leptin sensitivity in agouti gene-related protein (AGRP)/neuropeptide Y (NPY) neurons, and a lack of effect on leptin sensitivity of melanin concentrating hormone neurons.
1653 11272157 Thus, hypothalamic POMC and AGRP/NPY neurons are primary candidates as the mediators of the effects of the NSE-Rb transgene on energy homeostasis, ingestive behavior, the neuroendocrine system, and glucose metabolism.
1654 11272157 To better understand the function(s) of the LEPR isoforms in vivo, we generated db3J/db3J and db/db mice bearing a transgene (neuron-specific enolase [NSE]-Rb) expressing the B isoform of LEPR, the isoform capable of activating the signal transducer and activator of transcription (STAT) pathway, under the control of the neuron-specific enolase enhancer/promoter.
1655 11272157 Based on quantitative analysis of hypothalamic neuropeptide gene expression in the transgenic animals, we infer full restoration of leptin sensitivity to proopiomelanocortin (POMC) neurons, partial correction of leptin sensitivity in agouti gene-related protein (AGRP)/neuropeptide Y (NPY) neurons, and a lack of effect on leptin sensitivity of melanin concentrating hormone neurons.
1656 11272157 Thus, hypothalamic POMC and AGRP/NPY neurons are primary candidates as the mediators of the effects of the NSE-Rb transgene on energy homeostasis, ingestive behavior, the neuroendocrine system, and glucose metabolism.
1657 11281377 IL-6 and its receptor IL-6R are co-expressed at similar sites in the human adrenal gland, which seems to be an important source of IL-6 production.
1658 11281377 This explains the high systemic cortisol levels in the absence of adequate plasma concentrations of corticotropin (ACTH) observed in patients after long-term treatment with IL-6.
1659 11281377 It could therefore be concluded that in situations of prolonged stress, when corticotropin-releasing hormone and ACTH release are suppressed by feedback inhibition due to circulating glucocorticoids, IL-6 maintains the elevated glucocorticoid levels by direct stimulation of adrenocortical steroidogenesis via autocrine/paracrine mechanisms.
1660 11281377 IL-6 and its receptor IL-6R are co-expressed at similar sites in the human adrenal gland, which seems to be an important source of IL-6 production.
1661 11281377 This explains the high systemic cortisol levels in the absence of adequate plasma concentrations of corticotropin (ACTH) observed in patients after long-term treatment with IL-6.
1662 11281377 It could therefore be concluded that in situations of prolonged stress, when corticotropin-releasing hormone and ACTH release are suppressed by feedback inhibition due to circulating glucocorticoids, IL-6 maintains the elevated glucocorticoid levels by direct stimulation of adrenocortical steroidogenesis via autocrine/paracrine mechanisms.
1663 11289036 However, in contrast to leptin, cerulenin did not prevent effects of fasting on plasma corticosterone or hypothalamic levels of neuropeptide Y, agouti-related peptide, pro-opiomelanocortin, or cocaine- and amphetamine-related peptide mRNA.
1664 11314750 Hormonal study revealed central diabetes insipidus, hypopituitarism, and slightly increased prolactin level.
1665 11314750 The pathological examinations revealed fibrous tissue with heavy inflammatory infiltrate composed of lymphocytes and plasma cells, islands of eosinophilic epithelial cells stained positively for chromogranin, GH, ACTH, and PRL and negatively for antibodies directed against HLA-II antigens.
1666 11341305 Age was positively correlated with IL-6 (female and male: p<0.001) and adrenocorticotropic hormone (ACTH) in women only (p<0.001).
1667 11341305 However, a linear regression analysis revealed that the increase of ACTH in relation to cortisol depends on serum free testosterone in men (p=0.042) and on serum free 17 beta-estradiol (p<0.001) together with serum IL-6 in women (p=0.021).
1668 11341305 The gender-specific changes of cortisol in relation to ACTH depend on the age-related decrease of the respective sex hormone in both gender groups and the increase of IL-6 in women.
1669 11341305 Age was positively correlated with IL-6 (female and male: p<0.001) and adrenocorticotropic hormone (ACTH) in women only (p<0.001).
1670 11341305 However, a linear regression analysis revealed that the increase of ACTH in relation to cortisol depends on serum free testosterone in men (p=0.042) and on serum free 17 beta-estradiol (p<0.001) together with serum IL-6 in women (p=0.021).
1671 11341305 The gender-specific changes of cortisol in relation to ACTH depend on the age-related decrease of the respective sex hormone in both gender groups and the increase of IL-6 in women.
1672 11341305 Age was positively correlated with IL-6 (female and male: p<0.001) and adrenocorticotropic hormone (ACTH) in women only (p<0.001).
1673 11341305 However, a linear regression analysis revealed that the increase of ACTH in relation to cortisol depends on serum free testosterone in men (p=0.042) and on serum free 17 beta-estradiol (p<0.001) together with serum IL-6 in women (p=0.021).
1674 11341305 The gender-specific changes of cortisol in relation to ACTH depend on the age-related decrease of the respective sex hormone in both gender groups and the increase of IL-6 in women.
1675 11572327 Case of adrenocorticotropic hormone-independent macronodular adrenal hyperplasia with possible adrenal hypersensitivity to angiotensin II.
1676 11572327 With increasing case reports, it has been indicated that some cases with adrenocorticotropic hormone (ACTH)-independent macronodular adrenal hyperplasia (AIMAH) show abnormal responses in cortisol to various stimulation tests.
1677 11572327 Here we report a case of AIMAH that showed an aberrant response to angiotensin II via AT1 receptor in cortisol hypersecretion.
1678 11572327 An injection of arginine vasopressin (AVP) increased plasma cortisol and aldosterone levels, whereas ACTH remained undetectable.
1679 11572327 Case of adrenocorticotropic hormone-independent macronodular adrenal hyperplasia with possible adrenal hypersensitivity to angiotensin II.
1680 11572327 With increasing case reports, it has been indicated that some cases with adrenocorticotropic hormone (ACTH)-independent macronodular adrenal hyperplasia (AIMAH) show abnormal responses in cortisol to various stimulation tests.
1681 11572327 Here we report a case of AIMAH that showed an aberrant response to angiotensin II via AT1 receptor in cortisol hypersecretion.
1682 11572327 An injection of arginine vasopressin (AVP) increased plasma cortisol and aldosterone levels, whereas ACTH remained undetectable.
1683 11572327 Case of adrenocorticotropic hormone-independent macronodular adrenal hyperplasia with possible adrenal hypersensitivity to angiotensin II.
1684 11572327 With increasing case reports, it has been indicated that some cases with adrenocorticotropic hormone (ACTH)-independent macronodular adrenal hyperplasia (AIMAH) show abnormal responses in cortisol to various stimulation tests.
1685 11572327 Here we report a case of AIMAH that showed an aberrant response to angiotensin II via AT1 receptor in cortisol hypersecretion.
1686 11572327 An injection of arginine vasopressin (AVP) increased plasma cortisol and aldosterone levels, whereas ACTH remained undetectable.
1687 11581309 Conscious rats received week-long infusions of either a melanocortin receptor agonist, alpha-melanocyte-stimulating hormone (alpha-MSH), or antagonist, SHU9119, in the third cerebral ventricle while food intake was maintained constant in each group. alpha-MSH decreased intra-abdominal fat and markedly enhanced the actions of insulin on both glucose uptake and production, while SHU9119 exerted opposite effects.
1688 11606455 Increased ACTH with diabetes corresponded with increased hypothalamic CRH mRNA, but no change in pituitary POMC mRNA.
1689 11606455 With insulin-treatment, CRH mRNA remained elevated, and POMC mRNA was unaltered.
1690 11606455 We postulate that, in STZ-diabetes: 1) increased HPA activity is caused by increased central drive at and/or above the level of the paraventricular nucleus and is associated with decreased epinephrine; and 2) normalized pituitary-adrenal activity with insulin may be caused by the compensatory increase in GR mRNA allowing glucocorticoid-mediated suppression of ACTH secretion despite the residual increase in central HPA activity.
1691 11606455 Increased ACTH with diabetes corresponded with increased hypothalamic CRH mRNA, but no change in pituitary POMC mRNA.
1692 11606455 With insulin-treatment, CRH mRNA remained elevated, and POMC mRNA was unaltered.
1693 11606455 We postulate that, in STZ-diabetes: 1) increased HPA activity is caused by increased central drive at and/or above the level of the paraventricular nucleus and is associated with decreased epinephrine; and 2) normalized pituitary-adrenal activity with insulin may be caused by the compensatory increase in GR mRNA allowing glucocorticoid-mediated suppression of ACTH secretion despite the residual increase in central HPA activity.
1694 11606455 Increased ACTH with diabetes corresponded with increased hypothalamic CRH mRNA, but no change in pituitary POMC mRNA.
1695 11606455 With insulin-treatment, CRH mRNA remained elevated, and POMC mRNA was unaltered.
1696 11606455 We postulate that, in STZ-diabetes: 1) increased HPA activity is caused by increased central drive at and/or above the level of the paraventricular nucleus and is associated with decreased epinephrine; and 2) normalized pituitary-adrenal activity with insulin may be caused by the compensatory increase in GR mRNA allowing glucocorticoid-mediated suppression of ACTH secretion despite the residual increase in central HPA activity.
1697 11686544 Our series exemplifies the wide spectrum of LCH-induced hypopituitarism, and demonstrates some unique features, including a higher incidence of CRH/ACTH deficiency compared to other reports (4/7 patients), and massive obesity in 2 of our patients.
1698 11730986 Up-regulation of splenic prohormone convertases PC1 and PC2 in diabetic rats.
1699 11730986 To test this hypothesis, we treated rats with intraperitoneal streptozotocin (STZ) (50 mg/kg/day) daily for 5 days and measured splenic PC1 and PC2 mRNA by ribonuclease protection assay.
1700 11730986 We found that PC1 mRNA was increased 6.0+/-0.02-fold (P<0.05) and PC2 mRNA was increased 1.80+/-0.01-fold (P<0.005) in the spleen of rats that received STZ compared to rats that received vehicle.
1701 11730986 PC2 and pro-opiomelanocortin (POMC, a possible splenic substrate for PC1/PC2) immunoreactivity was found predominantly in the red pulp.
1702 11730986 STZ induced an increase in splenic PC1 and POMC, but not PC2 protein levels.
1703 11730986 Up-regulation of splenic prohormone convertases PC1 and PC2 in diabetic rats.
1704 11730986 To test this hypothesis, we treated rats with intraperitoneal streptozotocin (STZ) (50 mg/kg/day) daily for 5 days and measured splenic PC1 and PC2 mRNA by ribonuclease protection assay.
1705 11730986 We found that PC1 mRNA was increased 6.0+/-0.02-fold (P<0.05) and PC2 mRNA was increased 1.80+/-0.01-fold (P<0.005) in the spleen of rats that received STZ compared to rats that received vehicle.
1706 11730986 PC2 and pro-opiomelanocortin (POMC, a possible splenic substrate for PC1/PC2) immunoreactivity was found predominantly in the red pulp.
1707 11730986 STZ induced an increase in splenic PC1 and POMC, but not PC2 protein levels.
1708 11735084 Specific binding sites for [125I]beta-endorphin and the delta1-opioid [3H][D-pen(2), D-pen(5)]enkephalin (DPDPE) were quantified using autoradiography in soleus and extensor digitorum longus (EDL) muscles of lean and obese-diabetic (ob/ob) mice.
1709 11739434 To clarify the mechanism for the potentiation of CRH-induced ACTH response by the infusion of hypertonic saline, we investigated changes in plasma ACTH concentration after infusion of 5% hypertonic saline in five patients with untreated central diabetes insipidus (DI).
1710 11748490 The intrapituitary stimulatory effect of lipopolysaccharide on ACTH secretion is mediated by paracrine-acting IL-6.
1711 11748490 We have shown recently that LPS stimulates intrapituitary IL-6 production in folliculostellate cells via specific receptors and the p38a mitogen-activated protein kinase/nuclear factor-kappa B pathway.
1712 11748490 To test the physiological relevance of these findings, we studied whether LPS could enhance ACTH secretion via paracrine-acting intrapituitary IL-6.
1713 11748490 Lipopolysaccharide stimulated IL-6 secretion both in monolayer and aggregate mouse pituitary cell cultures, but only in aggregates, ACTH secretion was significantly enhanced by LPS.
1714 11748490 My4, an antibody that blocks the interaction of LPS with the LPS receptor CD14, suppressed both LPS-induced IL-6 and ACTH secretion in aggregate cultures.
1715 11748490 A neutralizing antibody against mouse IL-6 also inhibited LPS-induced ACTH secretion in aggregates.
1716 11748490 In mouse pituitary fragments, LPS-induced ACTH secretion was blocked by My4 and IL-6 antibodies, identically to re-aggregate cell cultures.
1717 11748490 LPS-induced ACTH secretion, mediated by intrapituitary IL-6, may represent a pituitary-specific mechanism that stimulates the HPA axis during infection/inflammation.
1718 11748490 The intrapituitary stimulatory effect of lipopolysaccharide on ACTH secretion is mediated by paracrine-acting IL-6.
1719 11748490 We have shown recently that LPS stimulates intrapituitary IL-6 production in folliculostellate cells via specific receptors and the p38a mitogen-activated protein kinase/nuclear factor-kappa B pathway.
1720 11748490 To test the physiological relevance of these findings, we studied whether LPS could enhance ACTH secretion via paracrine-acting intrapituitary IL-6.
1721 11748490 Lipopolysaccharide stimulated IL-6 secretion both in monolayer and aggregate mouse pituitary cell cultures, but only in aggregates, ACTH secretion was significantly enhanced by LPS.
1722 11748490 My4, an antibody that blocks the interaction of LPS with the LPS receptor CD14, suppressed both LPS-induced IL-6 and ACTH secretion in aggregate cultures.
1723 11748490 A neutralizing antibody against mouse IL-6 also inhibited LPS-induced ACTH secretion in aggregates.
1724 11748490 In mouse pituitary fragments, LPS-induced ACTH secretion was blocked by My4 and IL-6 antibodies, identically to re-aggregate cell cultures.
1725 11748490 LPS-induced ACTH secretion, mediated by intrapituitary IL-6, may represent a pituitary-specific mechanism that stimulates the HPA axis during infection/inflammation.
1726 11748490 The intrapituitary stimulatory effect of lipopolysaccharide on ACTH secretion is mediated by paracrine-acting IL-6.
1727 11748490 We have shown recently that LPS stimulates intrapituitary IL-6 production in folliculostellate cells via specific receptors and the p38a mitogen-activated protein kinase/nuclear factor-kappa B pathway.
1728 11748490 To test the physiological relevance of these findings, we studied whether LPS could enhance ACTH secretion via paracrine-acting intrapituitary IL-6.
1729 11748490 Lipopolysaccharide stimulated IL-6 secretion both in monolayer and aggregate mouse pituitary cell cultures, but only in aggregates, ACTH secretion was significantly enhanced by LPS.
1730 11748490 My4, an antibody that blocks the interaction of LPS with the LPS receptor CD14, suppressed both LPS-induced IL-6 and ACTH secretion in aggregate cultures.
1731 11748490 A neutralizing antibody against mouse IL-6 also inhibited LPS-induced ACTH secretion in aggregates.
1732 11748490 In mouse pituitary fragments, LPS-induced ACTH secretion was blocked by My4 and IL-6 antibodies, identically to re-aggregate cell cultures.
1733 11748490 LPS-induced ACTH secretion, mediated by intrapituitary IL-6, may represent a pituitary-specific mechanism that stimulates the HPA axis during infection/inflammation.
1734 11748490 The intrapituitary stimulatory effect of lipopolysaccharide on ACTH secretion is mediated by paracrine-acting IL-6.
1735 11748490 We have shown recently that LPS stimulates intrapituitary IL-6 production in folliculostellate cells via specific receptors and the p38a mitogen-activated protein kinase/nuclear factor-kappa B pathway.
1736 11748490 To test the physiological relevance of these findings, we studied whether LPS could enhance ACTH secretion via paracrine-acting intrapituitary IL-6.
1737 11748490 Lipopolysaccharide stimulated IL-6 secretion both in monolayer and aggregate mouse pituitary cell cultures, but only in aggregates, ACTH secretion was significantly enhanced by LPS.
1738 11748490 My4, an antibody that blocks the interaction of LPS with the LPS receptor CD14, suppressed both LPS-induced IL-6 and ACTH secretion in aggregate cultures.
1739 11748490 A neutralizing antibody against mouse IL-6 also inhibited LPS-induced ACTH secretion in aggregates.
1740 11748490 In mouse pituitary fragments, LPS-induced ACTH secretion was blocked by My4 and IL-6 antibodies, identically to re-aggregate cell cultures.
1741 11748490 LPS-induced ACTH secretion, mediated by intrapituitary IL-6, may represent a pituitary-specific mechanism that stimulates the HPA axis during infection/inflammation.
1742 11748490 The intrapituitary stimulatory effect of lipopolysaccharide on ACTH secretion is mediated by paracrine-acting IL-6.
1743 11748490 We have shown recently that LPS stimulates intrapituitary IL-6 production in folliculostellate cells via specific receptors and the p38a mitogen-activated protein kinase/nuclear factor-kappa B pathway.
1744 11748490 To test the physiological relevance of these findings, we studied whether LPS could enhance ACTH secretion via paracrine-acting intrapituitary IL-6.
1745 11748490 Lipopolysaccharide stimulated IL-6 secretion both in monolayer and aggregate mouse pituitary cell cultures, but only in aggregates, ACTH secretion was significantly enhanced by LPS.
1746 11748490 My4, an antibody that blocks the interaction of LPS with the LPS receptor CD14, suppressed both LPS-induced IL-6 and ACTH secretion in aggregate cultures.
1747 11748490 A neutralizing antibody against mouse IL-6 also inhibited LPS-induced ACTH secretion in aggregates.
1748 11748490 In mouse pituitary fragments, LPS-induced ACTH secretion was blocked by My4 and IL-6 antibodies, identically to re-aggregate cell cultures.
1749 11748490 LPS-induced ACTH secretion, mediated by intrapituitary IL-6, may represent a pituitary-specific mechanism that stimulates the HPA axis during infection/inflammation.
1750 11748490 The intrapituitary stimulatory effect of lipopolysaccharide on ACTH secretion is mediated by paracrine-acting IL-6.
1751 11748490 We have shown recently that LPS stimulates intrapituitary IL-6 production in folliculostellate cells via specific receptors and the p38a mitogen-activated protein kinase/nuclear factor-kappa B pathway.
1752 11748490 To test the physiological relevance of these findings, we studied whether LPS could enhance ACTH secretion via paracrine-acting intrapituitary IL-6.
1753 11748490 Lipopolysaccharide stimulated IL-6 secretion both in monolayer and aggregate mouse pituitary cell cultures, but only in aggregates, ACTH secretion was significantly enhanced by LPS.
1754 11748490 My4, an antibody that blocks the interaction of LPS with the LPS receptor CD14, suppressed both LPS-induced IL-6 and ACTH secretion in aggregate cultures.
1755 11748490 A neutralizing antibody against mouse IL-6 also inhibited LPS-induced ACTH secretion in aggregates.
1756 11748490 In mouse pituitary fragments, LPS-induced ACTH secretion was blocked by My4 and IL-6 antibodies, identically to re-aggregate cell cultures.
1757 11748490 LPS-induced ACTH secretion, mediated by intrapituitary IL-6, may represent a pituitary-specific mechanism that stimulates the HPA axis during infection/inflammation.
1758 11748490 The intrapituitary stimulatory effect of lipopolysaccharide on ACTH secretion is mediated by paracrine-acting IL-6.
1759 11748490 We have shown recently that LPS stimulates intrapituitary IL-6 production in folliculostellate cells via specific receptors and the p38a mitogen-activated protein kinase/nuclear factor-kappa B pathway.
1760 11748490 To test the physiological relevance of these findings, we studied whether LPS could enhance ACTH secretion via paracrine-acting intrapituitary IL-6.
1761 11748490 Lipopolysaccharide stimulated IL-6 secretion both in monolayer and aggregate mouse pituitary cell cultures, but only in aggregates, ACTH secretion was significantly enhanced by LPS.
1762 11748490 My4, an antibody that blocks the interaction of LPS with the LPS receptor CD14, suppressed both LPS-induced IL-6 and ACTH secretion in aggregate cultures.
1763 11748490 A neutralizing antibody against mouse IL-6 also inhibited LPS-induced ACTH secretion in aggregates.
1764 11748490 In mouse pituitary fragments, LPS-induced ACTH secretion was blocked by My4 and IL-6 antibodies, identically to re-aggregate cell cultures.
1765 11748490 LPS-induced ACTH secretion, mediated by intrapituitary IL-6, may represent a pituitary-specific mechanism that stimulates the HPA axis during infection/inflammation.
1766 11770265 Laboratory values were compatible with anterior (abnormal concentrations of adrenocorticotropin hormone, thyroid stimulating hormone, prolactin) and posterior (diabetes insipidus) pituitary gland insufficiency.
1767 11790431 This review will discuss this functional diversity by illustrating hypothalamic neurones that express neuropeptide Y (NPY), the melanocortin-4 receptor (MC4-R) and the orexins.
1768 11790431 NPY neurones in the arcuate nucleus (ARC) release NPY, a powerful inducer of feeding and obesity, in the paraventricular nucleus (PVN) and the lateral hypothalamic area (LHA).
1769 11790431 ARC-NPY neurones are inhibited by leptin and insulin and become overactive when levels of these hormones fall during undernutrition.
1770 11790431 With disruption of the inhibitory leptin signals due to gene mutations, the NPY neurones are overactive, which contributes to hyperphagia and obesity in the ob/ob and db/db mice and fa/fa Zucker rat.
1771 11790431 The MC4-R is activated by alpha-melanocyte-stimulating hormone [alpha-MSH; a cleavage product of pro-opiomelanocortin (POMC), which is expressed in the other ARC neurones] and inhibits feeding.
1772 11790431 Activation of MC4-R, possibly mediated by blockade of AGRP release, appears to restrain overeating of a palatable diet.
1773 11790431 Orexin-A and -B (corresponding to hypocretins 1 and 2) are expressed in specific LHA neurones.
1774 11790431 Orexin neurones also have close anatomical connections with LHA glucose-sensitive neurones.
1775 11796185 The content of beta-endorphin-like immunoreactivity (BER) in the adrenal medulla, determined by enzyme-linked immunosorbent assay, was actually higher in diabetic rats with insulin deficiency.
1776 11796185 Normalization of the plasma glucose concentration in STZ-diabetic rats with exogenous insulin or phlorizin, an inhibitor of the renal tubular glucose transport, reversed the mRNA level of POMC in the adrenal gland after 4 days of treatment.
1777 11796185 The content of beta-endorphin-like immunoreactivity (BER) in the adrenal medulla, determined by enzyme-linked immunosorbent assay, was actually higher in diabetic rats with insulin deficiency.
1778 11796185 Normalization of the plasma glucose concentration in STZ-diabetic rats with exogenous insulin or phlorizin, an inhibitor of the renal tubular glucose transport, reversed the mRNA level of POMC in the adrenal gland after 4 days of treatment.
1779 11837451 Its effect on pigmentation is achieved by antagonizing the binding of alpha-melanocyte stimulating hormone (alpha-MSH) to melanocortin 1 receptor (Mc1r), switching melanin synthesis from eumelanin (black/brown) to phaeomelanin (red/yellow).
1780 11837451 The yellow coat colour is the result of agouti chronically antagonizing the binding of alpha-MSH to Mc1r and the obese phenotype results from agouti protein antagonizing the binding of alpha-MSH to Mc3r and/or Mc4r.
1781 11837451 Its effect on pigmentation is achieved by antagonizing the binding of alpha-melanocyte stimulating hormone (alpha-MSH) to melanocortin 1 receptor (Mc1r), switching melanin synthesis from eumelanin (black/brown) to phaeomelanin (red/yellow).
1782 11837451 The yellow coat colour is the result of agouti chronically antagonizing the binding of alpha-MSH to Mc1r and the obese phenotype results from agouti protein antagonizing the binding of alpha-MSH to Mc3r and/or Mc4r.
1783 11857909 Mutations in GPCRs have been associated with dwarfism, congenital hyperthyroidism or hypothyroidism, nephrogenic diabetes insipidus, obesity, resistance to TSH, LH, FSH and ACTH, Jansen's metaphyseal and Blomstrand's chondrodysplasia, autosomal dominant hypoparathyroidism, and neonatal severe hyperparathyroidism.
1784 11857909 Mutations in other families of receptors which are characterized into one spanning-transmembrane receptor can result in resistance to insulin, GH, leptin and AMH.
1785 11857934 [Obesity induced by abnormality in leptin receptor and melanocortin-4 receptor].
1786 11857934 Leptin directly exerts its anorexigenic effects on hypothalamic arcuate nucleus. alpha-melanocyte stimulating hormone (alpha-MSH) derived from proopiomelanocortin (POMC) and melanocortin-4 receptor (MC4-R) have been reported to be involved in the downstream of leptin actions.
1787 11857934 In this paper, we summarize the clinical characteristics and the mechanisms of obesity caused by genetic abnormalities in leptin receptor and melanocortin-4 receptor.
1788 11872679 To investigate whether differences in hypothalamic melanocortin signaling can explain this discrepancy, we used in situ hybridization to compare the effects of STZ-diabetes and fasting on pro-opiomelanocortin (POMC) and agouti-related peptide (AgRP) mRNA levels in the hypothalamic arcuate nucleus (ARC) of Npy(--/--) and Npy(+/+) mice.
1789 11872679 STZ-diabetes also lowered POMC mRNA levels by 65% in the ARC of Npy(+/+) mice (P less-than-or-equal 0.05) but by only 11% in Npy(--/--) mice (NS); fasting significantly lowered POMC mRNA levels in both genotypes.
1790 11872679 We conclude that NPY is required for both the increase of food intake and the decrease of hypothalamic POMC gene expression induced by uncontrolled diabetes.
1791 11872679 To investigate whether differences in hypothalamic melanocortin signaling can explain this discrepancy, we used in situ hybridization to compare the effects of STZ-diabetes and fasting on pro-opiomelanocortin (POMC) and agouti-related peptide (AgRP) mRNA levels in the hypothalamic arcuate nucleus (ARC) of Npy(--/--) and Npy(+/+) mice.
1792 11872679 STZ-diabetes also lowered POMC mRNA levels by 65% in the ARC of Npy(+/+) mice (P less-than-or-equal 0.05) but by only 11% in Npy(--/--) mice (NS); fasting significantly lowered POMC mRNA levels in both genotypes.
1793 11872679 We conclude that NPY is required for both the increase of food intake and the decrease of hypothalamic POMC gene expression induced by uncontrolled diabetes.
1794 11872679 To investigate whether differences in hypothalamic melanocortin signaling can explain this discrepancy, we used in situ hybridization to compare the effects of STZ-diabetes and fasting on pro-opiomelanocortin (POMC) and agouti-related peptide (AgRP) mRNA levels in the hypothalamic arcuate nucleus (ARC) of Npy(--/--) and Npy(+/+) mice.
1795 11872679 STZ-diabetes also lowered POMC mRNA levels by 65% in the ARC of Npy(+/+) mice (P less-than-or-equal 0.05) but by only 11% in Npy(--/--) mice (NS); fasting significantly lowered POMC mRNA levels in both genotypes.
1796 11872679 We conclude that NPY is required for both the increase of food intake and the decrease of hypothalamic POMC gene expression induced by uncontrolled diabetes.
1797 11924926 In humans, mutations in leptin, leptin receptor, proopiomelanocortin (POMC), melanocortin-4 receptor (MC4R) and prohormone convertase 1 (PC1) have been described in patients with severe obesity.
1798 11924926 Most of these obesity disorders, with the exception of the MC4R mutations, exhibit recessive inheritance and a distinct phenotype with varying degrees of hypothalamic dysfunction, and they unravel the critical role of the central leptin and melanocortin pathways in human appetite control and energy homeostasis.
1799 11924926 To date, six MODY genes have been identified, the glucokinase gene and five beta cell-specific transcription factor genes, hepatocyte nuclear factor-1alpha (HNF-1alpha), HNF-1beta, HNF-4alpha, insulin promoter factor-1 (IPF-1) and NeuroD1/BETA2.
1800 11924926 At the other end of the spectrum are the inherited syndromes of insulin resistance that are caused by mutations in the insulin receptor gene and in the adipocyte-specific transcription factor PPARgamma.
1801 11932281 Metformin therapy in obese adolescents with polycystic ovary syndrome and impaired glucose tolerance: amelioration of exaggerated adrenal response to adrenocorticotropin with reduction of insulinemia/insulin resistance.
1802 11932281 In the present study we tested the hypothesis that metformin therapy in obese adolescents with PCOS will attenuate the adrenal steroidogenic response to ACTH, with reduction of insulin resistance/insulinemia.
1803 11932281 Pre- and posttherapy they had oral glucose tolerance testing, ACTH stimulation test, a 3-h hyperinsulinemic (80 mU/m(2).min)-euglycemic clamp to assess insulin sensitivity and a hyperglycemic clamp to assess insulin secretion.
1804 11932281 Fasting insulin correlated with the 17-hydroxypregnenelone response to ACTH stimulation (r = 0.52; P = 0.008).
1805 11932281 Metformin therapy in obese adolescents with polycystic ovary syndrome and impaired glucose tolerance: amelioration of exaggerated adrenal response to adrenocorticotropin with reduction of insulinemia/insulin resistance.
1806 11932281 In the present study we tested the hypothesis that metformin therapy in obese adolescents with PCOS will attenuate the adrenal steroidogenic response to ACTH, with reduction of insulin resistance/insulinemia.
1807 11932281 Pre- and posttherapy they had oral glucose tolerance testing, ACTH stimulation test, a 3-h hyperinsulinemic (80 mU/m(2).min)-euglycemic clamp to assess insulin sensitivity and a hyperglycemic clamp to assess insulin secretion.
1808 11932281 Fasting insulin correlated with the 17-hydroxypregnenelone response to ACTH stimulation (r = 0.52; P = 0.008).
1809 11932281 Metformin therapy in obese adolescents with polycystic ovary syndrome and impaired glucose tolerance: amelioration of exaggerated adrenal response to adrenocorticotropin with reduction of insulinemia/insulin resistance.
1810 11932281 In the present study we tested the hypothesis that metformin therapy in obese adolescents with PCOS will attenuate the adrenal steroidogenic response to ACTH, with reduction of insulin resistance/insulinemia.
1811 11932281 Pre- and posttherapy they had oral glucose tolerance testing, ACTH stimulation test, a 3-h hyperinsulinemic (80 mU/m(2).min)-euglycemic clamp to assess insulin sensitivity and a hyperglycemic clamp to assess insulin secretion.
1812 11932281 Fasting insulin correlated with the 17-hydroxypregnenelone response to ACTH stimulation (r = 0.52; P = 0.008).
1813 11932281 Metformin therapy in obese adolescents with polycystic ovary syndrome and impaired glucose tolerance: amelioration of exaggerated adrenal response to adrenocorticotropin with reduction of insulinemia/insulin resistance.
1814 11932281 In the present study we tested the hypothesis that metformin therapy in obese adolescents with PCOS will attenuate the adrenal steroidogenic response to ACTH, with reduction of insulin resistance/insulinemia.
1815 11932281 Pre- and posttherapy they had oral glucose tolerance testing, ACTH stimulation test, a 3-h hyperinsulinemic (80 mU/m(2).min)-euglycemic clamp to assess insulin sensitivity and a hyperglycemic clamp to assess insulin secretion.
1816 11932281 Fasting insulin correlated with the 17-hydroxypregnenelone response to ACTH stimulation (r = 0.52; P = 0.008).
1817 11956158 Administration of CRH and ACTH revealed reduced pituitary and adrenal sensitivity in untreated diabetic animals compared with both control and insulin-treated diabetic animals.
1818 11959420 In the paraventricular nucleus, CART mRNA is colocalized with vasopressin and corticotropin-releasing factor-containing neurons.
1819 12031953 We recently established that in addition to plasma adrenocorticotrophic hormone (ACTH) and corticosterone, hypothalamic corticotrophin-releasing hormone (CRH) mRNA and hippocampal type 1 glucocorticoid receptor (GR1) mRNA were also upregulated in uncontrolled streptozotocin-induced diabetes.
1820 12031953 Insulin treatment restored ACTH and corticosterone but not epinephrine responses to hypoglycemia in diabetic rats.
1821 12031953 In response to hypoglycemia, hypothalamic CRH mRNA and pituitary proopiomelanocortin mRNA expression increased in control and insulin-treated but not in untreated diabetic rats.
1822 12031953 We recently established that in addition to plasma adrenocorticotrophic hormone (ACTH) and corticosterone, hypothalamic corticotrophin-releasing hormone (CRH) mRNA and hippocampal type 1 glucocorticoid receptor (GR1) mRNA were also upregulated in uncontrolled streptozotocin-induced diabetes.
1823 12031953 Insulin treatment restored ACTH and corticosterone but not epinephrine responses to hypoglycemia in diabetic rats.
1824 12031953 In response to hypoglycemia, hypothalamic CRH mRNA and pituitary proopiomelanocortin mRNA expression increased in control and insulin-treated but not in untreated diabetic rats.
1825 12031953 We recently established that in addition to plasma adrenocorticotrophic hormone (ACTH) and corticosterone, hypothalamic corticotrophin-releasing hormone (CRH) mRNA and hippocampal type 1 glucocorticoid receptor (GR1) mRNA were also upregulated in uncontrolled streptozotocin-induced diabetes.
1826 12031953 Insulin treatment restored ACTH and corticosterone but not epinephrine responses to hypoglycemia in diabetic rats.
1827 12031953 In response to hypoglycemia, hypothalamic CRH mRNA and pituitary proopiomelanocortin mRNA expression increased in control and insulin-treated but not in untreated diabetic rats.
1828 12086933 Double-label in situ hybridization demonstrated neuron-specific GK mRNA expression in locus ceruleus norepinephrine and in hypothalamic neuropeptide Y, pro-opiomelanocortin, and gamma-aminobutyric acid neurons, but it did not demonstrate this expression in orexin neurons.
1829 12107209 Severe lipodystrophy is associated with leptin deficiency and insulin resistance, hypertriglyceridemia, and hepatic steatosis.
1830 12107209 The following parameters were evaluated before and at 4 months of leptin treatment: menstrual history, pelvic ultrasonogram, LHRH, TRH, and CRH tests.
1831 12107209 The percent increase in TSH following TRH administration was similar before (560%) and at 4 months (580%) of leptin therapy.
1832 12107209 The mean nonstimulated ACTH and cortisol concentrations were, respectively, 6.0 +/- 3.4 pmol/liter and 680 +/- 280 nmol/liter before leptin and did not change after 4 months of therapy (4.2 +/- 1.2 pmol/liter, P = 0.11 and 453 +/- 142 nmol/liter, P = 0.13, respectively).
1833 12107209 The ACTH and cortisol responses to CRH stimulation were normal both before and after therapy.
1834 12107209 Leptin replacement improved menstrual abnormalities and low E2 levels and corrected the attenuated LH response to LHRH in a group of young women with lipodystrophy and leptin deficiency.
1835 12107209 Severe lipodystrophy is associated with leptin deficiency and insulin resistance, hypertriglyceridemia, and hepatic steatosis.
1836 12107209 The following parameters were evaluated before and at 4 months of leptin treatment: menstrual history, pelvic ultrasonogram, LHRH, TRH, and CRH tests.
1837 12107209 The percent increase in TSH following TRH administration was similar before (560%) and at 4 months (580%) of leptin therapy.
1838 12107209 The mean nonstimulated ACTH and cortisol concentrations were, respectively, 6.0 +/- 3.4 pmol/liter and 680 +/- 280 nmol/liter before leptin and did not change after 4 months of therapy (4.2 +/- 1.2 pmol/liter, P = 0.11 and 453 +/- 142 nmol/liter, P = 0.13, respectively).
1839 12107209 The ACTH and cortisol responses to CRH stimulation were normal both before and after therapy.
1840 12107209 Leptin replacement improved menstrual abnormalities and low E2 levels and corrected the attenuated LH response to LHRH in a group of young women with lipodystrophy and leptin deficiency.
1841 12111488 Endocrinological outcome following first time transsphenoidal surgery for GH-, ACTH-, and PRL-secreting pituitary adenomas.
1842 12113951 Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
1843 12113951 Among these effects, fasting reduces TRH gene expression selectively in the hypothalamic paraventricular nucleus (PVN), which can be reversed by leptin administration.
1844 12113951 Intracerebroventricular (i.c.v.) infusion of alpha-MSH recapitulates the effects of leptin on hypophysiotropic TRH neurons, completely restoring proTRH mRNA to levels in fed animals despite continuation of the fast, making alpha-MSH a candidate for mediating the central effects of leptin.
1845 12113951 As alpha-MSH binds to a G-protein coupled receptor that activates cAMP and alpha-MSH stimulates the TRH promoter through the phosphorylation of the transcription factor CREB in vitro, we determined whether i.c.v. injection of alpha-MSH to rats regulates phosphorylation of CREB, specifically in hypophysiotropic TRH neurons of PVN.
1846 12113951 As alpha-MSH also induces the activation of CRH gene expression in the PVN, we further determined whether i.c.v. injection of alpha-MSH regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1847 12113951 Double immunolabeling with proTRH antiserum revealed that following i.c.v. alpha-MSH infusion at 10 min, the majority of TRH neurons contained PCREB in the anterior (71%), medial (83%) and periventricular (63%) parvocellular subdivisions.
1848 12113951 The percentage of double-labeled TRH neurons declined at 30 min and 1 h post alpha-MSH infusion.
1849 12113951 Similarly, only 16% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle treated animals, whereas 10 min following alpha-MSH infusion the percentage of CRH neurons colocalizing with the PCREB rose to 54%, then fell to 37 and 17% at 30 and 60 min postinfusion, respectively.
1850 12113951 These data demonstrate that i.c.v. alpha-MSH administration increases the phosphorylation of CREB in several subdivisions of the PVN including TRH and CRH neurons in the medial and periventricular parvocellular subdivisions, suggesting that phosphorylation of CREB may be necessary for alpha-MSH-induced activation of the TRH and CRH genes.
1851 12113951 Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
1852 12113951 Among these effects, fasting reduces TRH gene expression selectively in the hypothalamic paraventricular nucleus (PVN), which can be reversed by leptin administration.
1853 12113951 Intracerebroventricular (i.c.v.) infusion of alpha-MSH recapitulates the effects of leptin on hypophysiotropic TRH neurons, completely restoring proTRH mRNA to levels in fed animals despite continuation of the fast, making alpha-MSH a candidate for mediating the central effects of leptin.
1854 12113951 As alpha-MSH binds to a G-protein coupled receptor that activates cAMP and alpha-MSH stimulates the TRH promoter through the phosphorylation of the transcription factor CREB in vitro, we determined whether i.c.v. injection of alpha-MSH to rats regulates phosphorylation of CREB, specifically in hypophysiotropic TRH neurons of PVN.
1855 12113951 As alpha-MSH also induces the activation of CRH gene expression in the PVN, we further determined whether i.c.v. injection of alpha-MSH regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1856 12113951 Double immunolabeling with proTRH antiserum revealed that following i.c.v. alpha-MSH infusion at 10 min, the majority of TRH neurons contained PCREB in the anterior (71%), medial (83%) and periventricular (63%) parvocellular subdivisions.
1857 12113951 The percentage of double-labeled TRH neurons declined at 30 min and 1 h post alpha-MSH infusion.
1858 12113951 Similarly, only 16% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle treated animals, whereas 10 min following alpha-MSH infusion the percentage of CRH neurons colocalizing with the PCREB rose to 54%, then fell to 37 and 17% at 30 and 60 min postinfusion, respectively.
1859 12113951 These data demonstrate that i.c.v. alpha-MSH administration increases the phosphorylation of CREB in several subdivisions of the PVN including TRH and CRH neurons in the medial and periventricular parvocellular subdivisions, suggesting that phosphorylation of CREB may be necessary for alpha-MSH-induced activation of the TRH and CRH genes.
1860 12113951 Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
1861 12113951 Among these effects, fasting reduces TRH gene expression selectively in the hypothalamic paraventricular nucleus (PVN), which can be reversed by leptin administration.
1862 12113951 Intracerebroventricular (i.c.v.) infusion of alpha-MSH recapitulates the effects of leptin on hypophysiotropic TRH neurons, completely restoring proTRH mRNA to levels in fed animals despite continuation of the fast, making alpha-MSH a candidate for mediating the central effects of leptin.
1863 12113951 As alpha-MSH binds to a G-protein coupled receptor that activates cAMP and alpha-MSH stimulates the TRH promoter through the phosphorylation of the transcription factor CREB in vitro, we determined whether i.c.v. injection of alpha-MSH to rats regulates phosphorylation of CREB, specifically in hypophysiotropic TRH neurons of PVN.
1864 12113951 As alpha-MSH also induces the activation of CRH gene expression in the PVN, we further determined whether i.c.v. injection of alpha-MSH regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1865 12113951 Double immunolabeling with proTRH antiserum revealed that following i.c.v. alpha-MSH infusion at 10 min, the majority of TRH neurons contained PCREB in the anterior (71%), medial (83%) and periventricular (63%) parvocellular subdivisions.
1866 12113951 The percentage of double-labeled TRH neurons declined at 30 min and 1 h post alpha-MSH infusion.
1867 12113951 Similarly, only 16% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle treated animals, whereas 10 min following alpha-MSH infusion the percentage of CRH neurons colocalizing with the PCREB rose to 54%, then fell to 37 and 17% at 30 and 60 min postinfusion, respectively.
1868 12113951 These data demonstrate that i.c.v. alpha-MSH administration increases the phosphorylation of CREB in several subdivisions of the PVN including TRH and CRH neurons in the medial and periventricular parvocellular subdivisions, suggesting that phosphorylation of CREB may be necessary for alpha-MSH-induced activation of the TRH and CRH genes.
1869 12113951 Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
1870 12113951 Among these effects, fasting reduces TRH gene expression selectively in the hypothalamic paraventricular nucleus (PVN), which can be reversed by leptin administration.
1871 12113951 Intracerebroventricular (i.c.v.) infusion of alpha-MSH recapitulates the effects of leptin on hypophysiotropic TRH neurons, completely restoring proTRH mRNA to levels in fed animals despite continuation of the fast, making alpha-MSH a candidate for mediating the central effects of leptin.
1872 12113951 As alpha-MSH binds to a G-protein coupled receptor that activates cAMP and alpha-MSH stimulates the TRH promoter through the phosphorylation of the transcription factor CREB in vitro, we determined whether i.c.v. injection of alpha-MSH to rats regulates phosphorylation of CREB, specifically in hypophysiotropic TRH neurons of PVN.
1873 12113951 As alpha-MSH also induces the activation of CRH gene expression in the PVN, we further determined whether i.c.v. injection of alpha-MSH regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1874 12113951 Double immunolabeling with proTRH antiserum revealed that following i.c.v. alpha-MSH infusion at 10 min, the majority of TRH neurons contained PCREB in the anterior (71%), medial (83%) and periventricular (63%) parvocellular subdivisions.
1875 12113951 The percentage of double-labeled TRH neurons declined at 30 min and 1 h post alpha-MSH infusion.
1876 12113951 Similarly, only 16% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle treated animals, whereas 10 min following alpha-MSH infusion the percentage of CRH neurons colocalizing with the PCREB rose to 54%, then fell to 37 and 17% at 30 and 60 min postinfusion, respectively.
1877 12113951 These data demonstrate that i.c.v. alpha-MSH administration increases the phosphorylation of CREB in several subdivisions of the PVN including TRH and CRH neurons in the medial and periventricular parvocellular subdivisions, suggesting that phosphorylation of CREB may be necessary for alpha-MSH-induced activation of the TRH and CRH genes.
1878 12113951 Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
1879 12113951 Among these effects, fasting reduces TRH gene expression selectively in the hypothalamic paraventricular nucleus (PVN), which can be reversed by leptin administration.
1880 12113951 Intracerebroventricular (i.c.v.) infusion of alpha-MSH recapitulates the effects of leptin on hypophysiotropic TRH neurons, completely restoring proTRH mRNA to levels in fed animals despite continuation of the fast, making alpha-MSH a candidate for mediating the central effects of leptin.
1881 12113951 As alpha-MSH binds to a G-protein coupled receptor that activates cAMP and alpha-MSH stimulates the TRH promoter through the phosphorylation of the transcription factor CREB in vitro, we determined whether i.c.v. injection of alpha-MSH to rats regulates phosphorylation of CREB, specifically in hypophysiotropic TRH neurons of PVN.
1882 12113951 As alpha-MSH also induces the activation of CRH gene expression in the PVN, we further determined whether i.c.v. injection of alpha-MSH regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1883 12113951 Double immunolabeling with proTRH antiserum revealed that following i.c.v. alpha-MSH infusion at 10 min, the majority of TRH neurons contained PCREB in the anterior (71%), medial (83%) and periventricular (63%) parvocellular subdivisions.
1884 12113951 The percentage of double-labeled TRH neurons declined at 30 min and 1 h post alpha-MSH infusion.
1885 12113951 Similarly, only 16% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle treated animals, whereas 10 min following alpha-MSH infusion the percentage of CRH neurons colocalizing with the PCREB rose to 54%, then fell to 37 and 17% at 30 and 60 min postinfusion, respectively.
1886 12113951 These data demonstrate that i.c.v. alpha-MSH administration increases the phosphorylation of CREB in several subdivisions of the PVN including TRH and CRH neurons in the medial and periventricular parvocellular subdivisions, suggesting that phosphorylation of CREB may be necessary for alpha-MSH-induced activation of the TRH and CRH genes.
1887 12113951 Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
1888 12113951 Among these effects, fasting reduces TRH gene expression selectively in the hypothalamic paraventricular nucleus (PVN), which can be reversed by leptin administration.
1889 12113951 Intracerebroventricular (i.c.v.) infusion of alpha-MSH recapitulates the effects of leptin on hypophysiotropic TRH neurons, completely restoring proTRH mRNA to levels in fed animals despite continuation of the fast, making alpha-MSH a candidate for mediating the central effects of leptin.
1890 12113951 As alpha-MSH binds to a G-protein coupled receptor that activates cAMP and alpha-MSH stimulates the TRH promoter through the phosphorylation of the transcription factor CREB in vitro, we determined whether i.c.v. injection of alpha-MSH to rats regulates phosphorylation of CREB, specifically in hypophysiotropic TRH neurons of PVN.
1891 12113951 As alpha-MSH also induces the activation of CRH gene expression in the PVN, we further determined whether i.c.v. injection of alpha-MSH regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1892 12113951 Double immunolabeling with proTRH antiserum revealed that following i.c.v. alpha-MSH infusion at 10 min, the majority of TRH neurons contained PCREB in the anterior (71%), medial (83%) and periventricular (63%) parvocellular subdivisions.
1893 12113951 The percentage of double-labeled TRH neurons declined at 30 min and 1 h post alpha-MSH infusion.
1894 12113951 Similarly, only 16% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle treated animals, whereas 10 min following alpha-MSH infusion the percentage of CRH neurons colocalizing with the PCREB rose to 54%, then fell to 37 and 17% at 30 and 60 min postinfusion, respectively.
1895 12113951 These data demonstrate that i.c.v. alpha-MSH administration increases the phosphorylation of CREB in several subdivisions of the PVN including TRH and CRH neurons in the medial and periventricular parvocellular subdivisions, suggesting that phosphorylation of CREB may be necessary for alpha-MSH-induced activation of the TRH and CRH genes.
1896 12113951 Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
1897 12113951 Among these effects, fasting reduces TRH gene expression selectively in the hypothalamic paraventricular nucleus (PVN), which can be reversed by leptin administration.
1898 12113951 Intracerebroventricular (i.c.v.) infusion of alpha-MSH recapitulates the effects of leptin on hypophysiotropic TRH neurons, completely restoring proTRH mRNA to levels in fed animals despite continuation of the fast, making alpha-MSH a candidate for mediating the central effects of leptin.
1899 12113951 As alpha-MSH binds to a G-protein coupled receptor that activates cAMP and alpha-MSH stimulates the TRH promoter through the phosphorylation of the transcription factor CREB in vitro, we determined whether i.c.v. injection of alpha-MSH to rats regulates phosphorylation of CREB, specifically in hypophysiotropic TRH neurons of PVN.
1900 12113951 As alpha-MSH also induces the activation of CRH gene expression in the PVN, we further determined whether i.c.v. injection of alpha-MSH regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1901 12113951 Double immunolabeling with proTRH antiserum revealed that following i.c.v. alpha-MSH infusion at 10 min, the majority of TRH neurons contained PCREB in the anterior (71%), medial (83%) and periventricular (63%) parvocellular subdivisions.
1902 12113951 The percentage of double-labeled TRH neurons declined at 30 min and 1 h post alpha-MSH infusion.
1903 12113951 Similarly, only 16% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle treated animals, whereas 10 min following alpha-MSH infusion the percentage of CRH neurons colocalizing with the PCREB rose to 54%, then fell to 37 and 17% at 30 and 60 min postinfusion, respectively.
1904 12113951 These data demonstrate that i.c.v. alpha-MSH administration increases the phosphorylation of CREB in several subdivisions of the PVN including TRH and CRH neurons in the medial and periventricular parvocellular subdivisions, suggesting that phosphorylation of CREB may be necessary for alpha-MSH-induced activation of the TRH and CRH genes.
1905 12113951 Intracerebroventricular administration of alpha-melanocyte stimulating hormone increases phosphorylation of CREB in TRH- and CRH-producing neurons of the hypothalamic paraventricular nucleus.
1906 12113951 Among these effects, fasting reduces TRH gene expression selectively in the hypothalamic paraventricular nucleus (PVN), which can be reversed by leptin administration.
1907 12113951 Intracerebroventricular (i.c.v.) infusion of alpha-MSH recapitulates the effects of leptin on hypophysiotropic TRH neurons, completely restoring proTRH mRNA to levels in fed animals despite continuation of the fast, making alpha-MSH a candidate for mediating the central effects of leptin.
1908 12113951 As alpha-MSH binds to a G-protein coupled receptor that activates cAMP and alpha-MSH stimulates the TRH promoter through the phosphorylation of the transcription factor CREB in vitro, we determined whether i.c.v. injection of alpha-MSH to rats regulates phosphorylation of CREB, specifically in hypophysiotropic TRH neurons of PVN.
1909 12113951 As alpha-MSH also induces the activation of CRH gene expression in the PVN, we further determined whether i.c.v. injection of alpha-MSH regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1910 12113951 Double immunolabeling with proTRH antiserum revealed that following i.c.v. alpha-MSH infusion at 10 min, the majority of TRH neurons contained PCREB in the anterior (71%), medial (83%) and periventricular (63%) parvocellular subdivisions.
1911 12113951 The percentage of double-labeled TRH neurons declined at 30 min and 1 h post alpha-MSH infusion.
1912 12113951 Similarly, only 16% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle treated animals, whereas 10 min following alpha-MSH infusion the percentage of CRH neurons colocalizing with the PCREB rose to 54%, then fell to 37 and 17% at 30 and 60 min postinfusion, respectively.
1913 12113951 These data demonstrate that i.c.v. alpha-MSH administration increases the phosphorylation of CREB in several subdivisions of the PVN including TRH and CRH neurons in the medial and periventricular parvocellular subdivisions, suggesting that phosphorylation of CREB may be necessary for alpha-MSH-induced activation of the TRH and CRH genes.
1914 12147141 Meal size is controlled by a series of short-term hormonal and neural signals that derive from the gastrointestinal tract, such as cholecystokinin whereas others may initiate meals, such as the recently discovered hormone, ghrelin.
1915 12147141 Other hormones such as insulin and leptin, together with circulating nutrients, indicate long-term energy stores.
1916 12147141 When energy stores are low, production of leptin from adipose tissue, and thus circulating leptin concentrations fall, leading to increased production of hypothalamic neurotransmitters that strongly increase food intake, such as neuropeptide Y (NPY), galanin and agouti-related protein (AGRP) and decreased levels of alpha-melanocyte-stimulating hormone (alpha-MSH), cocaine and amphetamine-regulated transcript (CART) and neurotensin that reduce food intake and increase energy expenditure.
1917 12147141 The finding that mutations in leptin and POMC lead to severe early onset obesity in humans has highlighted the importance of these peptides in humans.
1918 12147141 Meal size is controlled by a series of short-term hormonal and neural signals that derive from the gastrointestinal tract, such as cholecystokinin whereas others may initiate meals, such as the recently discovered hormone, ghrelin.
1919 12147141 Other hormones such as insulin and leptin, together with circulating nutrients, indicate long-term energy stores.
1920 12147141 When energy stores are low, production of leptin from adipose tissue, and thus circulating leptin concentrations fall, leading to increased production of hypothalamic neurotransmitters that strongly increase food intake, such as neuropeptide Y (NPY), galanin and agouti-related protein (AGRP) and decreased levels of alpha-melanocyte-stimulating hormone (alpha-MSH), cocaine and amphetamine-regulated transcript (CART) and neurotensin that reduce food intake and increase energy expenditure.
1921 12147141 The finding that mutations in leptin and POMC lead to severe early onset obesity in humans has highlighted the importance of these peptides in humans.
1922 12208672 Further analysis in ACTH-stimulated bovine adrenal cells using stable isotope dilution/gas chromatography-mass spectrometry demonstrated CLO-induced inhibition of adrenal 21-hydroxylase (P450c21) activity leading to a dose-dependent increase in the 17-OH-progesterone/11-deoxycortisol ratio.
1923 12351426 Ghrelin is not necessary for adequate hormonal counterregulation of insulin-induced hypoglycemia.
1924 12351426 Ghrelin is a novel enteric hormone that stimulates growth hormone (GH), ACTH, and epinephrine; augments plasma glucose; and increases food intake by inducing the feeling of hunger.
1925 12351426 At present, it is not known whether ghrelin increases in response to insulin-induced hypoglycemia.
1926 12351426 To answer this question, we compared plasma ghrelin concentrations after a short-term insulin infusion that was allowed or not (euglycemic clamp) to cause hypoglycemia (2.7 +/- 0.2 mmol/l at 30 min) in five healthy volunteers.
1927 12351426 In both studies, plasma ghrelin concentrations decreased (P < 0.01) after insulin infusion (hypoglycemia by 14%, euglycemia by 22%), reached a nadir at 30 min, and returned to baseline at 60 min, without differences between the hypoglycemia and the euglycemia studies.
1928 12351426 There was a strong correlation (R(2) = 0.91, P < 0.002) between the insulin sensitivity of the subjects and the percentage suppression of ghrelin from baseline.
1929 12351426 These data demonstrate that ghrelin is not required for the hormonal defenses against insulin-induced hypoglycemia and that insulin can suppress ghrelin levels in healthy humans.
1930 12359499 The key findings included 1) that the coat color phenotype in the lethal yellow (A(Y)/a) mouse is due to antagonism of the melanocortin-1 receptor (MC1R) by the agouti gene product; 2) the MC3R and MC4R are expressed in CNS centers involved in energy homeostasis, and 3) the combined results of pharmacological studies showing that agouti is an antagonist of the MC4R and transgenic studies showing that inhibition or loss of the MC4R recapitulate the lethal yellow phenotype.
1931 12359499 Pro-opiomelanocortin (POMC), MC3R, and MC4R knockouts are obese and are now being used to further analyze melanocortin receptor function.
1932 12359499 The obesity phenotype observed in the MC3R and MC4R knockouts (KO) differ markedly.
1933 12377295 The CRH and LC/NE systems stimulate arousal and attention, as well as the mesocorticolimbic dopaminergic system, which is involved in anticipatory and reward phenomena, and the hypothalamic beta-endorphin system, which suppresses pain sensation and, hence, increases analgesia.
1934 12377295 CRH plays an important role in inhibiting GnRH secretion during stress, while, via somatostatin, it also inhibits GH, TRH and TSH secretion, suppressing, thus, the reproductive, growth and thyroid functions.
1935 12377295 They simultaneously inhibit the CRH, LC/NE and beta-endorphin systems and stimulate the mesocorticolimbic dopaminergic system and the CRH peptidergic central nucleus of the amygdala.
1936 12377295 The CRH and LC/NE systems stimulate arousal and attention, as well as the mesocorticolimbic dopaminergic system, which is involved in anticipatory and reward phenomena, and the hypothalamic beta-endorphin system, which suppresses pain sensation and, hence, increases analgesia.
1937 12377295 CRH plays an important role in inhibiting GnRH secretion during stress, while, via somatostatin, it also inhibits GH, TRH and TSH secretion, suppressing, thus, the reproductive, growth and thyroid functions.
1938 12377295 They simultaneously inhibit the CRH, LC/NE and beta-endorphin systems and stimulate the mesocorticolimbic dopaminergic system and the CRH peptidergic central nucleus of the amygdala.
1939 12397532 The Involvement of GABAA receptors in the control of GnRH and beta-endorphin release, and catecholaminergic activity in the preoptic area in anestrous ewes.
1940 12397532 This study examined role of GABA A receptors in the control of GnRH, beta-endorphin release and catecholaminergic system activity in the preoptic area and LH secretion in anestrous ewes.
1941 12397532 The decrease of LH pulse frequency and concentration of this hormone in blood plasma suggests that GABA A receptor agonist applied in the MPOA suppresses GnRH release from the GnRH axon terminals in the ventromedial hypothalamus-nucleus infundibularis region (VEN/NI) into the hypophyseal vascular system.
1942 12397532 These results suggest that suppression of GnRH/LH release during muscimol treatment may result from activation of GABA A receptors on the GnRH perikarya and/or through GABA A receptor mechanism on the dopaminergic and noradrenergic system in the MPOA.
1943 12397532 The Involvement of GABAA receptors in the control of GnRH and beta-endorphin release, and catecholaminergic activity in the preoptic area in anestrous ewes.
1944 12397532 This study examined role of GABA A receptors in the control of GnRH, beta-endorphin release and catecholaminergic system activity in the preoptic area and LH secretion in anestrous ewes.
1945 12397532 The decrease of LH pulse frequency and concentration of this hormone in blood plasma suggests that GABA A receptor agonist applied in the MPOA suppresses GnRH release from the GnRH axon terminals in the ventromedial hypothalamus-nucleus infundibularis region (VEN/NI) into the hypophyseal vascular system.
1946 12397532 These results suggest that suppression of GnRH/LH release during muscimol treatment may result from activation of GABA A receptors on the GnRH perikarya and/or through GABA A receptor mechanism on the dopaminergic and noradrenergic system in the MPOA.
1947 12403080 Leptin and insulin action in the central nervous system.
1948 12403080 This review summarizes old and recent data implicating insulin and leptin as key circulating signals to the central nervous system, particularly the ventral hypothalamus, in communicating the size and the distribution of body fat stores.
1949 12403080 The key primary neurons in the arcuate nucleus containing NPY/AgRP and POMC/CART appear be critical constituents of the CNS regulating system, and are shown to contribute to anabolic and catabolic signaling systems to complete the feedback loop.
1950 12403080 New data to indicate shared intracellular signaling from leptin and insulin is provided.
1951 12403080 The satiety system for meals, consisting of neural afferents to the hindbrain from the gastrointestinal tract, is described and its effectiveness is shown to vary with the strength of the insulin and leptin signals.
1952 12439785 In the presence of U73312, the specific inhibitor of phospholipase C (PLC), the uptake of radioactive glucose into isolated soleus muscle induced by beta-endorphin was reduced in a concentration-dependent manner, but it was not affected by U73343, the negative control of U73312.
1953 12439785 Moreover, chelerythrine and GF 109203X diminished the stimulatory action of beta-endorphin on the uptake of radioactive glucose at a concentration sufficient to inhibit protein kinase C (PKC).
1954 12439785 In the presence of U73312, the specific inhibitor of phospholipase C (PLC), the uptake of radioactive glucose into isolated soleus muscle induced by beta-endorphin was reduced in a concentration-dependent manner, but it was not affected by U73343, the negative control of U73312.
1955 12439785 Moreover, chelerythrine and GF 109203X diminished the stimulatory action of beta-endorphin on the uptake of radioactive glucose at a concentration sufficient to inhibit protein kinase C (PKC).
1956 12442088 The placenta synthetizes Corticotropin-Releasing Hormone (CRH) and pro-opio-melanocortin (POMC), and the plasma levels of both peptides are highly increased during pregnancy.
1957 12453626 Alpha-melanocyte stimulating hormone suppresses intracerebral tumor necrosis factor-alpha and interleukin-1beta gene expression following transient cerebral ischemia in mice.
1958 12453626 This study's objective was to determine whether the anti-inflammatory neuropeptide alpha-melanocyte stimulating hormone (MSH) can suppress postischemic activation of intracerebral tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) gene expression.
1959 12453626 Ipsilateral TNF-alpha levels were increased in cerebrocortical territory of the middle cerebral artery (MCA) following transient unilateral MCA occlusion (MCAO) and reperfusion in mice, and systemic alpha-MSH treatment (0.5 mg/kg i.p.) suppressed this increase.
1960 12453626 Systemic alpha-MSH treatment also inhibited the marked increases in cortical TNF-alpha and IL-1beta mRNA levels following MCAO, and reduced the intracerebral TNF-alpha protein levels seen after transient global ischemia.
1961 12453626 Alpha-melanocyte stimulating hormone suppresses intracerebral tumor necrosis factor-alpha and interleukin-1beta gene expression following transient cerebral ischemia in mice.
1962 12453626 This study's objective was to determine whether the anti-inflammatory neuropeptide alpha-melanocyte stimulating hormone (MSH) can suppress postischemic activation of intracerebral tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) gene expression.
1963 12453626 Ipsilateral TNF-alpha levels were increased in cerebrocortical territory of the middle cerebral artery (MCA) following transient unilateral MCA occlusion (MCAO) and reperfusion in mice, and systemic alpha-MSH treatment (0.5 mg/kg i.p.) suppressed this increase.
1964 12453626 Systemic alpha-MSH treatment also inhibited the marked increases in cortical TNF-alpha and IL-1beta mRNA levels following MCAO, and reduced the intracerebral TNF-alpha protein levels seen after transient global ischemia.
1965 12453626 Alpha-melanocyte stimulating hormone suppresses intracerebral tumor necrosis factor-alpha and interleukin-1beta gene expression following transient cerebral ischemia in mice.
1966 12453626 This study's objective was to determine whether the anti-inflammatory neuropeptide alpha-melanocyte stimulating hormone (MSH) can suppress postischemic activation of intracerebral tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) gene expression.
1967 12453626 Ipsilateral TNF-alpha levels were increased in cerebrocortical territory of the middle cerebral artery (MCA) following transient unilateral MCA occlusion (MCAO) and reperfusion in mice, and systemic alpha-MSH treatment (0.5 mg/kg i.p.) suppressed this increase.
1968 12453626 Systemic alpha-MSH treatment also inhibited the marked increases in cortical TNF-alpha and IL-1beta mRNA levels following MCAO, and reduced the intracerebral TNF-alpha protein levels seen after transient global ischemia.
1969 12453626 Alpha-melanocyte stimulating hormone suppresses intracerebral tumor necrosis factor-alpha and interleukin-1beta gene expression following transient cerebral ischemia in mice.
1970 12453626 This study's objective was to determine whether the anti-inflammatory neuropeptide alpha-melanocyte stimulating hormone (MSH) can suppress postischemic activation of intracerebral tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) gene expression.
1971 12453626 Ipsilateral TNF-alpha levels were increased in cerebrocortical territory of the middle cerebral artery (MCA) following transient unilateral MCA occlusion (MCAO) and reperfusion in mice, and systemic alpha-MSH treatment (0.5 mg/kg i.p.) suppressed this increase.
1972 12453626 Systemic alpha-MSH treatment also inhibited the marked increases in cortical TNF-alpha and IL-1beta mRNA levels following MCAO, and reduced the intracerebral TNF-alpha protein levels seen after transient global ischemia.
1973 12453895 Compared with lean controls, ob/ob mice had elevated expression of NPY and agouti-related protein (AgRP) mRNA in the arcuate nucleus and decreased expression of proopiomelanocortin (POMC) and cocaine- and amphetamine-regulated transcript (CART) mRNA.
1974 12453895 Y2 deletion in ob/ob mice significantly increased the hypothalamic POMC mRNA expression, with no effect on NPY, AgRP, or CART expression.
1975 12453895 Compared with lean controls, ob/ob mice had elevated expression of NPY and agouti-related protein (AgRP) mRNA in the arcuate nucleus and decreased expression of proopiomelanocortin (POMC) and cocaine- and amphetamine-regulated transcript (CART) mRNA.
1976 12453895 Y2 deletion in ob/ob mice significantly increased the hypothalamic POMC mRNA expression, with no effect on NPY, AgRP, or CART expression.
1977 12488356 Central administration of neuropeptide Y reduces alpha-melanocyte-stimulating hormone-induced cyclic adenosine 5'-monophosphate response element binding protein (CREB) phosphorylation in pro-thyrotropin-releasing hormone neurons and increases CREB phosphorylation in corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
1978 12488356 Neuropeptide Y (NPY) has a potent inhibitory effect on TRH gene expression in the paraventricular nucleus (PVN) and contributes to the fall in circulating thyroid hormone levels during fasting mediated by a reduction in serum leptin levels.
1979 12488356 Because alpha-MSH activates the TRH gene by increasing the phosphorylation of CREB in the nucleus of these neurons, we raised the possibility that at least one of the mechanisms by which NPY reduces TRH mRNA in hypophysiotropic neurons is by antagonizing the ability of alpha-MSH to phosphorylate CREB.
1980 12488356 As NPY increases CRH mRNA in the hypothalamus, we further determined whether intracerebroventricular (i.c.v.) administration of NPY regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1981 12488356 NPY [10 micro g in artificial CSF (aCSF)] was administered into the lateral ventricle i.c.v. 30 min before the i.c.v. administration of aCSF or alpha-MSH (10 micro g in aCSF), the latter in a dose previously demonstrated to increase proTRH mRNA and phosphorylate CREB in TRH neurons.
1982 12488356 By double-labeling immunocytochemistry, only few TRH neurons in the PVN contained phosphoCREB (PCREB) in animals treated only with aCSF (4 +/- 0.2%) or with NPY followed by aCSF (9.7 +/- 2.5), whereas alpha-MSH-infused animals dramatically increased the percentage of TRH neurons containing PCREB (75.3 +/- 6.9%).
1983 12488356 Pretreatment with NPY before alpha-MSH infusion, however, significantly reduced the percentage of TRH neurons containing PCREB (40.8 +/- 3.5%) compared with alpha-MSH infused animals (P = 0.01).
1984 12488356 Only 12.2 +/- 0.9% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle-treated animals, whereas 30 min following NPY infusion, the number of CRH neurons containing PCREB increased dramatically to 88 +/- 2.9%.
1985 12488356 Whereas alpha-MSH infusion increased the percentage of CRH neurons that contained PCREB to 56 +/- 2.2% compared with control, animals pretreated with NPY further increased the number of CRH neurons colocalizing with PCREB to 87 +/- 2.5%.
1986 12488356 These data demonstrate a functional interaction between NPY and alpha-MSH in the regulation of proTRH neurons in the PVN, suggesting that NPY can antagonize alpha-MSH induced activation of the TRH gene by interfering with melanocortin signaling at the postreceptor level, preventing the phosphorylation of CREB.
1987 12488356 In contrast, NPY infusion increases the phosphorylation of CREB in CRH neurons, indicating that NPY has independent effects on discrete populations of neurons in the PVN, presumably mediated through different signaling mechanisms.
1988 12488356 Central administration of neuropeptide Y reduces alpha-melanocyte-stimulating hormone-induced cyclic adenosine 5'-monophosphate response element binding protein (CREB) phosphorylation in pro-thyrotropin-releasing hormone neurons and increases CREB phosphorylation in corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
1989 12488356 Neuropeptide Y (NPY) has a potent inhibitory effect on TRH gene expression in the paraventricular nucleus (PVN) and contributes to the fall in circulating thyroid hormone levels during fasting mediated by a reduction in serum leptin levels.
1990 12488356 Because alpha-MSH activates the TRH gene by increasing the phosphorylation of CREB in the nucleus of these neurons, we raised the possibility that at least one of the mechanisms by which NPY reduces TRH mRNA in hypophysiotropic neurons is by antagonizing the ability of alpha-MSH to phosphorylate CREB.
1991 12488356 As NPY increases CRH mRNA in the hypothalamus, we further determined whether intracerebroventricular (i.c.v.) administration of NPY regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
1992 12488356 NPY [10 micro g in artificial CSF (aCSF)] was administered into the lateral ventricle i.c.v. 30 min before the i.c.v. administration of aCSF or alpha-MSH (10 micro g in aCSF), the latter in a dose previously demonstrated to increase proTRH mRNA and phosphorylate CREB in TRH neurons.
1993 12488356 By double-labeling immunocytochemistry, only few TRH neurons in the PVN contained phosphoCREB (PCREB) in animals treated only with aCSF (4 +/- 0.2%) or with NPY followed by aCSF (9.7 +/- 2.5), whereas alpha-MSH-infused animals dramatically increased the percentage of TRH neurons containing PCREB (75.3 +/- 6.9%).
1994 12488356 Pretreatment with NPY before alpha-MSH infusion, however, significantly reduced the percentage of TRH neurons containing PCREB (40.8 +/- 3.5%) compared with alpha-MSH infused animals (P = 0.01).
1995 12488356 Only 12.2 +/- 0.9% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle-treated animals, whereas 30 min following NPY infusion, the number of CRH neurons containing PCREB increased dramatically to 88 +/- 2.9%.
1996 12488356 Whereas alpha-MSH infusion increased the percentage of CRH neurons that contained PCREB to 56 +/- 2.2% compared with control, animals pretreated with NPY further increased the number of CRH neurons colocalizing with PCREB to 87 +/- 2.5%.
1997 12488356 These data demonstrate a functional interaction between NPY and alpha-MSH in the regulation of proTRH neurons in the PVN, suggesting that NPY can antagonize alpha-MSH induced activation of the TRH gene by interfering with melanocortin signaling at the postreceptor level, preventing the phosphorylation of CREB.
1998 12488356 In contrast, NPY infusion increases the phosphorylation of CREB in CRH neurons, indicating that NPY has independent effects on discrete populations of neurons in the PVN, presumably mediated through different signaling mechanisms.
1999 12488356 Central administration of neuropeptide Y reduces alpha-melanocyte-stimulating hormone-induced cyclic adenosine 5'-monophosphate response element binding protein (CREB) phosphorylation in pro-thyrotropin-releasing hormone neurons and increases CREB phosphorylation in corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
2000 12488356 Neuropeptide Y (NPY) has a potent inhibitory effect on TRH gene expression in the paraventricular nucleus (PVN) and contributes to the fall in circulating thyroid hormone levels during fasting mediated by a reduction in serum leptin levels.
2001 12488356 Because alpha-MSH activates the TRH gene by increasing the phosphorylation of CREB in the nucleus of these neurons, we raised the possibility that at least one of the mechanisms by which NPY reduces TRH mRNA in hypophysiotropic neurons is by antagonizing the ability of alpha-MSH to phosphorylate CREB.
2002 12488356 As NPY increases CRH mRNA in the hypothalamus, we further determined whether intracerebroventricular (i.c.v.) administration of NPY regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
2003 12488356 NPY [10 micro g in artificial CSF (aCSF)] was administered into the lateral ventricle i.c.v. 30 min before the i.c.v. administration of aCSF or alpha-MSH (10 micro g in aCSF), the latter in a dose previously demonstrated to increase proTRH mRNA and phosphorylate CREB in TRH neurons.
2004 12488356 By double-labeling immunocytochemistry, only few TRH neurons in the PVN contained phosphoCREB (PCREB) in animals treated only with aCSF (4 +/- 0.2%) or with NPY followed by aCSF (9.7 +/- 2.5), whereas alpha-MSH-infused animals dramatically increased the percentage of TRH neurons containing PCREB (75.3 +/- 6.9%).
2005 12488356 Pretreatment with NPY before alpha-MSH infusion, however, significantly reduced the percentage of TRH neurons containing PCREB (40.8 +/- 3.5%) compared with alpha-MSH infused animals (P = 0.01).
2006 12488356 Only 12.2 +/- 0.9% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle-treated animals, whereas 30 min following NPY infusion, the number of CRH neurons containing PCREB increased dramatically to 88 +/- 2.9%.
2007 12488356 Whereas alpha-MSH infusion increased the percentage of CRH neurons that contained PCREB to 56 +/- 2.2% compared with control, animals pretreated with NPY further increased the number of CRH neurons colocalizing with PCREB to 87 +/- 2.5%.
2008 12488356 These data demonstrate a functional interaction between NPY and alpha-MSH in the regulation of proTRH neurons in the PVN, suggesting that NPY can antagonize alpha-MSH induced activation of the TRH gene by interfering with melanocortin signaling at the postreceptor level, preventing the phosphorylation of CREB.
2009 12488356 In contrast, NPY infusion increases the phosphorylation of CREB in CRH neurons, indicating that NPY has independent effects on discrete populations of neurons in the PVN, presumably mediated through different signaling mechanisms.
2010 12488356 Central administration of neuropeptide Y reduces alpha-melanocyte-stimulating hormone-induced cyclic adenosine 5'-monophosphate response element binding protein (CREB) phosphorylation in pro-thyrotropin-releasing hormone neurons and increases CREB phosphorylation in corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
2011 12488356 Neuropeptide Y (NPY) has a potent inhibitory effect on TRH gene expression in the paraventricular nucleus (PVN) and contributes to the fall in circulating thyroid hormone levels during fasting mediated by a reduction in serum leptin levels.
2012 12488356 Because alpha-MSH activates the TRH gene by increasing the phosphorylation of CREB in the nucleus of these neurons, we raised the possibility that at least one of the mechanisms by which NPY reduces TRH mRNA in hypophysiotropic neurons is by antagonizing the ability of alpha-MSH to phosphorylate CREB.
2013 12488356 As NPY increases CRH mRNA in the hypothalamus, we further determined whether intracerebroventricular (i.c.v.) administration of NPY regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
2014 12488356 NPY [10 micro g in artificial CSF (aCSF)] was administered into the lateral ventricle i.c.v. 30 min before the i.c.v. administration of aCSF or alpha-MSH (10 micro g in aCSF), the latter in a dose previously demonstrated to increase proTRH mRNA and phosphorylate CREB in TRH neurons.
2015 12488356 By double-labeling immunocytochemistry, only few TRH neurons in the PVN contained phosphoCREB (PCREB) in animals treated only with aCSF (4 +/- 0.2%) or with NPY followed by aCSF (9.7 +/- 2.5), whereas alpha-MSH-infused animals dramatically increased the percentage of TRH neurons containing PCREB (75.3 +/- 6.9%).
2016 12488356 Pretreatment with NPY before alpha-MSH infusion, however, significantly reduced the percentage of TRH neurons containing PCREB (40.8 +/- 3.5%) compared with alpha-MSH infused animals (P = 0.01).
2017 12488356 Only 12.2 +/- 0.9% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle-treated animals, whereas 30 min following NPY infusion, the number of CRH neurons containing PCREB increased dramatically to 88 +/- 2.9%.
2018 12488356 Whereas alpha-MSH infusion increased the percentage of CRH neurons that contained PCREB to 56 +/- 2.2% compared with control, animals pretreated with NPY further increased the number of CRH neurons colocalizing with PCREB to 87 +/- 2.5%.
2019 12488356 These data demonstrate a functional interaction between NPY and alpha-MSH in the regulation of proTRH neurons in the PVN, suggesting that NPY can antagonize alpha-MSH induced activation of the TRH gene by interfering with melanocortin signaling at the postreceptor level, preventing the phosphorylation of CREB.
2020 12488356 In contrast, NPY infusion increases the phosphorylation of CREB in CRH neurons, indicating that NPY has independent effects on discrete populations of neurons in the PVN, presumably mediated through different signaling mechanisms.
2021 12488356 Central administration of neuropeptide Y reduces alpha-melanocyte-stimulating hormone-induced cyclic adenosine 5'-monophosphate response element binding protein (CREB) phosphorylation in pro-thyrotropin-releasing hormone neurons and increases CREB phosphorylation in corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
2022 12488356 Neuropeptide Y (NPY) has a potent inhibitory effect on TRH gene expression in the paraventricular nucleus (PVN) and contributes to the fall in circulating thyroid hormone levels during fasting mediated by a reduction in serum leptin levels.
2023 12488356 Because alpha-MSH activates the TRH gene by increasing the phosphorylation of CREB in the nucleus of these neurons, we raised the possibility that at least one of the mechanisms by which NPY reduces TRH mRNA in hypophysiotropic neurons is by antagonizing the ability of alpha-MSH to phosphorylate CREB.
2024 12488356 As NPY increases CRH mRNA in the hypothalamus, we further determined whether intracerebroventricular (i.c.v.) administration of NPY regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
2025 12488356 NPY [10 micro g in artificial CSF (aCSF)] was administered into the lateral ventricle i.c.v. 30 min before the i.c.v. administration of aCSF or alpha-MSH (10 micro g in aCSF), the latter in a dose previously demonstrated to increase proTRH mRNA and phosphorylate CREB in TRH neurons.
2026 12488356 By double-labeling immunocytochemistry, only few TRH neurons in the PVN contained phosphoCREB (PCREB) in animals treated only with aCSF (4 +/- 0.2%) or with NPY followed by aCSF (9.7 +/- 2.5), whereas alpha-MSH-infused animals dramatically increased the percentage of TRH neurons containing PCREB (75.3 +/- 6.9%).
2027 12488356 Pretreatment with NPY before alpha-MSH infusion, however, significantly reduced the percentage of TRH neurons containing PCREB (40.8 +/- 3.5%) compared with alpha-MSH infused animals (P = 0.01).
2028 12488356 Only 12.2 +/- 0.9% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle-treated animals, whereas 30 min following NPY infusion, the number of CRH neurons containing PCREB increased dramatically to 88 +/- 2.9%.
2029 12488356 Whereas alpha-MSH infusion increased the percentage of CRH neurons that contained PCREB to 56 +/- 2.2% compared with control, animals pretreated with NPY further increased the number of CRH neurons colocalizing with PCREB to 87 +/- 2.5%.
2030 12488356 These data demonstrate a functional interaction between NPY and alpha-MSH in the regulation of proTRH neurons in the PVN, suggesting that NPY can antagonize alpha-MSH induced activation of the TRH gene by interfering with melanocortin signaling at the postreceptor level, preventing the phosphorylation of CREB.
2031 12488356 In contrast, NPY infusion increases the phosphorylation of CREB in CRH neurons, indicating that NPY has independent effects on discrete populations of neurons in the PVN, presumably mediated through different signaling mechanisms.
2032 12488356 Central administration of neuropeptide Y reduces alpha-melanocyte-stimulating hormone-induced cyclic adenosine 5'-monophosphate response element binding protein (CREB) phosphorylation in pro-thyrotropin-releasing hormone neurons and increases CREB phosphorylation in corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
2033 12488356 Neuropeptide Y (NPY) has a potent inhibitory effect on TRH gene expression in the paraventricular nucleus (PVN) and contributes to the fall in circulating thyroid hormone levels during fasting mediated by a reduction in serum leptin levels.
2034 12488356 Because alpha-MSH activates the TRH gene by increasing the phosphorylation of CREB in the nucleus of these neurons, we raised the possibility that at least one of the mechanisms by which NPY reduces TRH mRNA in hypophysiotropic neurons is by antagonizing the ability of alpha-MSH to phosphorylate CREB.
2035 12488356 As NPY increases CRH mRNA in the hypothalamus, we further determined whether intracerebroventricular (i.c.v.) administration of NPY regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
2036 12488356 NPY [10 micro g in artificial CSF (aCSF)] was administered into the lateral ventricle i.c.v. 30 min before the i.c.v. administration of aCSF or alpha-MSH (10 micro g in aCSF), the latter in a dose previously demonstrated to increase proTRH mRNA and phosphorylate CREB in TRH neurons.
2037 12488356 By double-labeling immunocytochemistry, only few TRH neurons in the PVN contained phosphoCREB (PCREB) in animals treated only with aCSF (4 +/- 0.2%) or with NPY followed by aCSF (9.7 +/- 2.5), whereas alpha-MSH-infused animals dramatically increased the percentage of TRH neurons containing PCREB (75.3 +/- 6.9%).
2038 12488356 Pretreatment with NPY before alpha-MSH infusion, however, significantly reduced the percentage of TRH neurons containing PCREB (40.8 +/- 3.5%) compared with alpha-MSH infused animals (P = 0.01).
2039 12488356 Only 12.2 +/- 0.9% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle-treated animals, whereas 30 min following NPY infusion, the number of CRH neurons containing PCREB increased dramatically to 88 +/- 2.9%.
2040 12488356 Whereas alpha-MSH infusion increased the percentage of CRH neurons that contained PCREB to 56 +/- 2.2% compared with control, animals pretreated with NPY further increased the number of CRH neurons colocalizing with PCREB to 87 +/- 2.5%.
2041 12488356 These data demonstrate a functional interaction between NPY and alpha-MSH in the regulation of proTRH neurons in the PVN, suggesting that NPY can antagonize alpha-MSH induced activation of the TRH gene by interfering with melanocortin signaling at the postreceptor level, preventing the phosphorylation of CREB.
2042 12488356 In contrast, NPY infusion increases the phosphorylation of CREB in CRH neurons, indicating that NPY has independent effects on discrete populations of neurons in the PVN, presumably mediated through different signaling mechanisms.
2043 12488356 Central administration of neuropeptide Y reduces alpha-melanocyte-stimulating hormone-induced cyclic adenosine 5'-monophosphate response element binding protein (CREB) phosphorylation in pro-thyrotropin-releasing hormone neurons and increases CREB phosphorylation in corticotropin-releasing hormone neurons in the hypothalamic paraventricular nucleus.
2044 12488356 Neuropeptide Y (NPY) has a potent inhibitory effect on TRH gene expression in the paraventricular nucleus (PVN) and contributes to the fall in circulating thyroid hormone levels during fasting mediated by a reduction in serum leptin levels.
2045 12488356 Because alpha-MSH activates the TRH gene by increasing the phosphorylation of CREB in the nucleus of these neurons, we raised the possibility that at least one of the mechanisms by which NPY reduces TRH mRNA in hypophysiotropic neurons is by antagonizing the ability of alpha-MSH to phosphorylate CREB.
2046 12488356 As NPY increases CRH mRNA in the hypothalamus, we further determined whether intracerebroventricular (i.c.v.) administration of NPY regulates the phosphorylation of CREB in hypophysiotropic CRH neurons.
2047 12488356 NPY [10 micro g in artificial CSF (aCSF)] was administered into the lateral ventricle i.c.v. 30 min before the i.c.v. administration of aCSF or alpha-MSH (10 micro g in aCSF), the latter in a dose previously demonstrated to increase proTRH mRNA and phosphorylate CREB in TRH neurons.
2048 12488356 By double-labeling immunocytochemistry, only few TRH neurons in the PVN contained phosphoCREB (PCREB) in animals treated only with aCSF (4 +/- 0.2%) or with NPY followed by aCSF (9.7 +/- 2.5), whereas alpha-MSH-infused animals dramatically increased the percentage of TRH neurons containing PCREB (75.3 +/- 6.9%).
2049 12488356 Pretreatment with NPY before alpha-MSH infusion, however, significantly reduced the percentage of TRH neurons containing PCREB (40.8 +/- 3.5%) compared with alpha-MSH infused animals (P = 0.01).
2050 12488356 Only 12.2 +/- 0.9% of CRH neurons of the medial parvocellular neurons contained PCREB nuclei in vehicle-treated animals, whereas 30 min following NPY infusion, the number of CRH neurons containing PCREB increased dramatically to 88 +/- 2.9%.
2051 12488356 Whereas alpha-MSH infusion increased the percentage of CRH neurons that contained PCREB to 56 +/- 2.2% compared with control, animals pretreated with NPY further increased the number of CRH neurons colocalizing with PCREB to 87 +/- 2.5%.
2052 12488356 These data demonstrate a functional interaction between NPY and alpha-MSH in the regulation of proTRH neurons in the PVN, suggesting that NPY can antagonize alpha-MSH induced activation of the TRH gene by interfering with melanocortin signaling at the postreceptor level, preventing the phosphorylation of CREB.
2053 12488356 In contrast, NPY infusion increases the phosphorylation of CREB in CRH neurons, indicating that NPY has independent effects on discrete populations of neurons in the PVN, presumably mediated through different signaling mechanisms.
2054 12499395 A functional analysis of these mutant receptors, in addition to 11 other childhood obesity-associated MC4R mutations, indicates that they all alter the activation of the receptor by the endogenous agonist alpha-MSH.
2055 12553551 Hypothalamus-pituitary-adrenal axis in central diabetes insipidus: ACTH and cortisol responsiveness to CRH administration.
2056 12553551 The aim of the current study was to evaluate baseline and CRH-stimulated ACTH and F levels in patients with central diabetes insipidus (CDI), before and after replacement therapy with desamino-D-AVP (DDAVP).
2057 12553551 In addition, replacement treatment with DDAVP normalized CRH-induced but not baseline ACTH and F secretion.
2058 12553551 Hypothalamus-pituitary-adrenal axis in central diabetes insipidus: ACTH and cortisol responsiveness to CRH administration.
2059 12553551 The aim of the current study was to evaluate baseline and CRH-stimulated ACTH and F levels in patients with central diabetes insipidus (CDI), before and after replacement therapy with desamino-D-AVP (DDAVP).
2060 12553551 In addition, replacement treatment with DDAVP normalized CRH-induced but not baseline ACTH and F secretion.
2061 12553551 Hypothalamus-pituitary-adrenal axis in central diabetes insipidus: ACTH and cortisol responsiveness to CRH administration.
2062 12553551 The aim of the current study was to evaluate baseline and CRH-stimulated ACTH and F levels in patients with central diabetes insipidus (CDI), before and after replacement therapy with desamino-D-AVP (DDAVP).
2063 12553551 In addition, replacement treatment with DDAVP normalized CRH-induced but not baseline ACTH and F secretion.
2064 12606499 Three more groups underwent pretreatment with corticosterone, adrenocorticotrophic hormone (ACTH), or corticotrophin-releasing hormone (CRH) mirroring the glucocorticoid response of the hypoglycemic group.
2065 12606499 CRH- (and insulin-treated) animals showed markedly reduced epinephrine responses (CRH 1,276 +/- 404 pg/ml, controls 3,559 +/- 563 pg/ml; P < 0.05).
2066 12606499 The addition of a CRH receptor 1 (CRHr1) antagonist to the antecedent CRH reversed the subsequent suppression of epinephrine.
2067 12606499 These findings suggest that CRH acting via CRHr1 plays an important role in the sympathoadrenal downregulation seen in this rodent model of antecedent hypoglycemia; this action is not mediated via activation of the hypothalamic-pituitary-adrenal axis.
2068 12639913 Preexposure of GT1-7 cells that express endogenous MC4R to the agonist for MC4R, alpha-melanocyte-stimulating hormone, resulted in impaired cAMP formation to a second challenge of alpha-melanocyte-stimulating hormone.
2069 12639913 The desensitization of MC4R was accompanied by time-dependent internalization of the receptor in HEK293 cells, which was partly inhibited by pretreatment with a specific protein kinase A (PKA) inhibitor, H89.
2070 12639913 Overexpression of dominant-negative mutants of beta-arrestin1-V53D and dynamin I-K44A prevented agonist-mediated internalization of MC4R.
2071 12639913 Our data demonstrate that, through PKA-, GRK-, beta-arrestin-, and dynamin-dependent processes, MC4R undergoes internalization in response to agonist, thereby providing novel insights into the regulation of MC4R signaling.
2072 12654151 He was followed for more than 15 years and sequentially developed deficiencies of growth hormone, thyroid-stimulating hormone, gonadotrophins and adrenocorticotropic hormone after high-dose cranial irradiation.
2073 12660884 Consumption of a high-fat diet decreases hypothalamic neuropeptide Y (NPY) and increases proopiomelanocortin (POMC) and brown adipose uncoupling protein (UCP)-1 mRNA in obesity-resistant SWR/J but not obesity-prone C57Bl/6J mice.
2074 12660884 Although leptin was elevated in both strains in response to a high-fat diet, its role in the development of diet-induced obesity has remained unclear since insulin and other factors that affect similar tissue targets are altered.
2075 12660884 Sensitivity to fasting in C57Bl/6J mice was associated with higher hypothalamic NPY mRNA and reduced POMC and UCP-1 mRNA expression, while the robust response to high leptin levels in SWR/J mice was associated with suppression of NPY mRNA.
2076 12660884 Consumption of a high-fat diet decreases hypothalamic neuropeptide Y (NPY) and increases proopiomelanocortin (POMC) and brown adipose uncoupling protein (UCP)-1 mRNA in obesity-resistant SWR/J but not obesity-prone C57Bl/6J mice.
2077 12660884 Although leptin was elevated in both strains in response to a high-fat diet, its role in the development of diet-induced obesity has remained unclear since insulin and other factors that affect similar tissue targets are altered.
2078 12660884 Sensitivity to fasting in C57Bl/6J mice was associated with higher hypothalamic NPY mRNA and reduced POMC and UCP-1 mRNA expression, while the robust response to high leptin levels in SWR/J mice was associated with suppression of NPY mRNA.
2079 12689472 Thus noise causes the release of different stress hormones (e.g. corticotropin releasing hormone: CRH; adrenocorticotropic hormone: ACTH) especially in sleeping persons during the vagotropic night/early morning phase.
2080 12689472 Even worse may be the widespread extrahypothalamical effects of CRH/and/or ACTH which have the potential to influence nearly all regulatory systems, causing for example stress-dysmenorrhea etc. as signs of disturbed hormonal balance.
2081 12689472 Thus noise causes the release of different stress hormones (e.g. corticotropin releasing hormone: CRH; adrenocorticotropic hormone: ACTH) especially in sleeping persons during the vagotropic night/early morning phase.
2082 12689472 Even worse may be the widespread extrahypothalamical effects of CRH/and/or ACTH which have the potential to influence nearly all regulatory systems, causing for example stress-dysmenorrhea etc. as signs of disturbed hormonal balance.
2083 12717340 Hyperactivation of the HPA axis in diabetes is associated with increased expression of hypothalamic corticotrophin-releasing hormone (CRH) mRNA and hippocampal mineralocorticoid receptor (MR) mRNA.
2084 12717340 Although insulin replacement restores ACTH and corticosterone levels to normal, likely through glucocorticoid-mediated suppression of ACTH secretion, CRH and MR mRNA expression remain elevated.
2085 12727972 We have synthesized the human N-terminal POMC fragment 1-28-POMC with the disulfide bridges in the correct position between cysteine residues 2-24 and 8-20 and studied the activity of these peptides in adrenocortical tumor cells in vitro. 1-28-POMC stimulated cell proliferation in human NCI-h295 and mouse Y-1 adrenal cancer cell lines and also in primary cultures of bovine adrenocortical cells in a concentration-dependent manner. 1-28-POMC led to rapid activation of the MAPKs extracellular signal-regulated kinases-1 and -2, but not c-Jun N-terminal kinase and p38, pathways.
2086 12727972 However, protein levels of important regulators of steroidogenesis [steroidogenic factor-1, DAX-1 (dosage-sensitive sex reversal-adrenal hypoplasia congenita critical region on the X-chromosome 1), steroidogenic acute regulatory protein, and cytochrome P450 side-chain cleavage enzyme] remained unaffected by 1-28-POMC treatment.
2087 12792820 Hence, we compared the effects of glucagon, glucagon-like peptide (GLP)-1 and GLP-2 on basal and ACTH-stimulated secretion of dispersed adrenocortical cells from normal and STZ-induced diabetic rats.
2088 12792820 In normoglycemic rats, glucagon increased basal aldosterone and corticosterone secretion from ZG and ZF/R cells, GLP-2 raised both basal and ACTH-stimulated aldosterone secretion and ACTH-stimulated corticosterone output, and EX4 increased basal corticosterone secretion.
2089 12792820 It is suggested that the prolonged exposure to low concentrations of insulin causes unresponsiveness of adrenocortical cells to glucagon, GLP-2 and EX4, which may contribute to the hyporeninemic hypoaldosteronism and alterations in glucocorticoid metabolism occurring in experimental diabetes.
2090 12792820 Hence, we compared the effects of glucagon, glucagon-like peptide (GLP)-1 and GLP-2 on basal and ACTH-stimulated secretion of dispersed adrenocortical cells from normal and STZ-induced diabetic rats.
2091 12792820 In normoglycemic rats, glucagon increased basal aldosterone and corticosterone secretion from ZG and ZF/R cells, GLP-2 raised both basal and ACTH-stimulated aldosterone secretion and ACTH-stimulated corticosterone output, and EX4 increased basal corticosterone secretion.
2092 12792820 It is suggested that the prolonged exposure to low concentrations of insulin causes unresponsiveness of adrenocortical cells to glucagon, GLP-2 and EX4, which may contribute to the hyporeninemic hypoaldosteronism and alterations in glucocorticoid metabolism occurring in experimental diabetes.
2093 12841938 Urocortin is a peptide recently identified, structurally related to corticotropin releasing factor (CRF).
2094 12841938 In the arterial segments precontracted with endothelin-1, urocortin produced concentration-dependent relaxation, and the order of sensitivity was: tail > basilar > coronary.
2095 12851322 Two melanocortin receptors (MC3R, MC4R) are expressed in brain regions receiving projections of POMC fibers, most of which also receive projections from a population of ARC neurons that co-express neuropeptide Y (NPY) and the MC3R/MC4R antagonist agouti-related peptide (AgRP).
2096 12851322 The MC4R, but not the MC3R, is required for the stimulation of energy expenditure in response to melanocortin agonists and voluntary hyperphagia.
2097 12855418 Elevated corticosterone and inhibition of ACTH responses to CRH and ether in the neonatal rat: effect of hypoxia from birth.
2098 12855418 At the end of the exposure, plasma ACTH and corticosterone were measured before and after either ether vapors were administered for 3 min or CRH (10 microg/kg) was given intraperitoneally.
2099 12855418 Thyroid function, pituitary pro-opiomelanocortin (POMC) mRNA and ACTH content, and hypothalamic corticotropin-releasing hormone (CRH), neuropeptide Y (NPY), and AVP mRNA were also assessed.
2100 12855418 The ACTH responses to ether or CRH administration were almost completely inhibited in hypoxic pups.
2101 12855418 Hypoxia did not affect the established regulators of the neonatal hypothalamic-pituitary-adrenal axis, including pituitary POMC or ACTH content, hypothalamic CRH, NPY, or AVP mRNA (parvo- or magnocellular), or thyroid function.
2102 12855418 Elevated corticosterone and inhibition of ACTH responses to CRH and ether in the neonatal rat: effect of hypoxia from birth.
2103 12855418 At the end of the exposure, plasma ACTH and corticosterone were measured before and after either ether vapors were administered for 3 min or CRH (10 microg/kg) was given intraperitoneally.
2104 12855418 Thyroid function, pituitary pro-opiomelanocortin (POMC) mRNA and ACTH content, and hypothalamic corticotropin-releasing hormone (CRH), neuropeptide Y (NPY), and AVP mRNA were also assessed.
2105 12855418 The ACTH responses to ether or CRH administration were almost completely inhibited in hypoxic pups.
2106 12855418 Hypoxia did not affect the established regulators of the neonatal hypothalamic-pituitary-adrenal axis, including pituitary POMC or ACTH content, hypothalamic CRH, NPY, or AVP mRNA (parvo- or magnocellular), or thyroid function.
2107 12855418 Elevated corticosterone and inhibition of ACTH responses to CRH and ether in the neonatal rat: effect of hypoxia from birth.
2108 12855418 At the end of the exposure, plasma ACTH and corticosterone were measured before and after either ether vapors were administered for 3 min or CRH (10 microg/kg) was given intraperitoneally.
2109 12855418 Thyroid function, pituitary pro-opiomelanocortin (POMC) mRNA and ACTH content, and hypothalamic corticotropin-releasing hormone (CRH), neuropeptide Y (NPY), and AVP mRNA were also assessed.
2110 12855418 The ACTH responses to ether or CRH administration were almost completely inhibited in hypoxic pups.
2111 12855418 Hypoxia did not affect the established regulators of the neonatal hypothalamic-pituitary-adrenal axis, including pituitary POMC or ACTH content, hypothalamic CRH, NPY, or AVP mRNA (parvo- or magnocellular), or thyroid function.
2112 12855418 Elevated corticosterone and inhibition of ACTH responses to CRH and ether in the neonatal rat: effect of hypoxia from birth.
2113 12855418 At the end of the exposure, plasma ACTH and corticosterone were measured before and after either ether vapors were administered for 3 min or CRH (10 microg/kg) was given intraperitoneally.
2114 12855418 Thyroid function, pituitary pro-opiomelanocortin (POMC) mRNA and ACTH content, and hypothalamic corticotropin-releasing hormone (CRH), neuropeptide Y (NPY), and AVP mRNA were also assessed.
2115 12855418 The ACTH responses to ether or CRH administration were almost completely inhibited in hypoxic pups.
2116 12855418 Hypoxia did not affect the established regulators of the neonatal hypothalamic-pituitary-adrenal axis, including pituitary POMC or ACTH content, hypothalamic CRH, NPY, or AVP mRNA (parvo- or magnocellular), or thyroid function.
2117 12855418 Elevated corticosterone and inhibition of ACTH responses to CRH and ether in the neonatal rat: effect of hypoxia from birth.
2118 12855418 At the end of the exposure, plasma ACTH and corticosterone were measured before and after either ether vapors were administered for 3 min or CRH (10 microg/kg) was given intraperitoneally.
2119 12855418 Thyroid function, pituitary pro-opiomelanocortin (POMC) mRNA and ACTH content, and hypothalamic corticotropin-releasing hormone (CRH), neuropeptide Y (NPY), and AVP mRNA were also assessed.
2120 12855418 The ACTH responses to ether or CRH administration were almost completely inhibited in hypoxic pups.
2121 12855418 Hypoxia did not affect the established regulators of the neonatal hypothalamic-pituitary-adrenal axis, including pituitary POMC or ACTH content, hypothalamic CRH, NPY, or AVP mRNA (parvo- or magnocellular), or thyroid function.
2122 12882910 Central pro-opiomelanocortin gene delivery results in hypophagia, reduced visceral adiposity, and improved insulin sensitivity in genetically obese Zucker rats.
2123 12882910 For testing whether chronic activation of the central melanocortin pathway can bypass the defective leptin signaling and normalize altered energy homeostasis in these rats, recombinant adeno-associated virus encoding pro-opiomelanocortin (rAAV-POMC) or control vector was delivered bilaterally into the basal hypothalamus with coordinates targeting the arcuate nucleus.
2124 12882910 Thirty-eight days after POMC gene delivery, hypothalamic POMC expression increased fourfold and melanocortin signaling (indicated by phosphorylation of CREB) increased by 62% with respect to controls.
2125 12882910 POMC gene delivery enhanced uncoupling protein 1 in brown adipose tissue (BAT) by more than fourfold.
2126 12882910 Fasting serum leptin, insulin, and cholesterol levels were also significantly reduced by rAAV-POMC treatment.
2127 12882910 This study demonstrates that targeted POMC gene delivery in the hypothalamus suppresses food intake and weight gain and reduces visceral adiposity and hyperinsulinemia in leptin-resistant obese Zucker rats.
2128 12882910 Central pro-opiomelanocortin gene delivery results in hypophagia, reduced visceral adiposity, and improved insulin sensitivity in genetically obese Zucker rats.
2129 12882910 For testing whether chronic activation of the central melanocortin pathway can bypass the defective leptin signaling and normalize altered energy homeostasis in these rats, recombinant adeno-associated virus encoding pro-opiomelanocortin (rAAV-POMC) or control vector was delivered bilaterally into the basal hypothalamus with coordinates targeting the arcuate nucleus.
2130 12882910 Thirty-eight days after POMC gene delivery, hypothalamic POMC expression increased fourfold and melanocortin signaling (indicated by phosphorylation of CREB) increased by 62% with respect to controls.
2131 12882910 POMC gene delivery enhanced uncoupling protein 1 in brown adipose tissue (BAT) by more than fourfold.
2132 12882910 Fasting serum leptin, insulin, and cholesterol levels were also significantly reduced by rAAV-POMC treatment.
2133 12882910 This study demonstrates that targeted POMC gene delivery in the hypothalamus suppresses food intake and weight gain and reduces visceral adiposity and hyperinsulinemia in leptin-resistant obese Zucker rats.
2134 12882910 Central pro-opiomelanocortin gene delivery results in hypophagia, reduced visceral adiposity, and improved insulin sensitivity in genetically obese Zucker rats.
2135 12882910 For testing whether chronic activation of the central melanocortin pathway can bypass the defective leptin signaling and normalize altered energy homeostasis in these rats, recombinant adeno-associated virus encoding pro-opiomelanocortin (rAAV-POMC) or control vector was delivered bilaterally into the basal hypothalamus with coordinates targeting the arcuate nucleus.
2136 12882910 Thirty-eight days after POMC gene delivery, hypothalamic POMC expression increased fourfold and melanocortin signaling (indicated by phosphorylation of CREB) increased by 62% with respect to controls.
2137 12882910 POMC gene delivery enhanced uncoupling protein 1 in brown adipose tissue (BAT) by more than fourfold.
2138 12882910 Fasting serum leptin, insulin, and cholesterol levels were also significantly reduced by rAAV-POMC treatment.
2139 12882910 This study demonstrates that targeted POMC gene delivery in the hypothalamus suppresses food intake and weight gain and reduces visceral adiposity and hyperinsulinemia in leptin-resistant obese Zucker rats.
2140 12882910 Central pro-opiomelanocortin gene delivery results in hypophagia, reduced visceral adiposity, and improved insulin sensitivity in genetically obese Zucker rats.
2141 12882910 For testing whether chronic activation of the central melanocortin pathway can bypass the defective leptin signaling and normalize altered energy homeostasis in these rats, recombinant adeno-associated virus encoding pro-opiomelanocortin (rAAV-POMC) or control vector was delivered bilaterally into the basal hypothalamus with coordinates targeting the arcuate nucleus.
2142 12882910 Thirty-eight days after POMC gene delivery, hypothalamic POMC expression increased fourfold and melanocortin signaling (indicated by phosphorylation of CREB) increased by 62% with respect to controls.
2143 12882910 POMC gene delivery enhanced uncoupling protein 1 in brown adipose tissue (BAT) by more than fourfold.
2144 12882910 Fasting serum leptin, insulin, and cholesterol levels were also significantly reduced by rAAV-POMC treatment.
2145 12882910 This study demonstrates that targeted POMC gene delivery in the hypothalamus suppresses food intake and weight gain and reduces visceral adiposity and hyperinsulinemia in leptin-resistant obese Zucker rats.
2146 12882910 Central pro-opiomelanocortin gene delivery results in hypophagia, reduced visceral adiposity, and improved insulin sensitivity in genetically obese Zucker rats.
2147 12882910 For testing whether chronic activation of the central melanocortin pathway can bypass the defective leptin signaling and normalize altered energy homeostasis in these rats, recombinant adeno-associated virus encoding pro-opiomelanocortin (rAAV-POMC) or control vector was delivered bilaterally into the basal hypothalamus with coordinates targeting the arcuate nucleus.
2148 12882910 Thirty-eight days after POMC gene delivery, hypothalamic POMC expression increased fourfold and melanocortin signaling (indicated by phosphorylation of CREB) increased by 62% with respect to controls.
2149 12882910 POMC gene delivery enhanced uncoupling protein 1 in brown adipose tissue (BAT) by more than fourfold.
2150 12882910 Fasting serum leptin, insulin, and cholesterol levels were also significantly reduced by rAAV-POMC treatment.
2151 12882910 This study demonstrates that targeted POMC gene delivery in the hypothalamus suppresses food intake and weight gain and reduces visceral adiposity and hyperinsulinemia in leptin-resistant obese Zucker rats.
2152 12887368 Adrenocorticotropin-independent macronodular adrenal hyperplasia treated by simultaneous bilateral laparoscopic adrenalectomy.
2153 12887368 Radiological and endocrinological findings suggested adrenocorticotropic hormone-independent macronodular adrenal hyperplasia.
2154 12887368 Adrenocorticotropin-independent macronodular adrenal hyperplasia treated by simultaneous bilateral laparoscopic adrenalectomy.
2155 12887368 Radiological and endocrinological findings suggested adrenocorticotropic hormone-independent macronodular adrenal hyperplasia.
2156 12941772 Diabetic rats both overeat high-carbohydrate diet and have altered hypothalamic neuropeptide Y (NPY) and corticotropin-releasing factor (CRF).
2157 12941772 In contrast, a high-fat diet reduces caloric intake of diabetics to normal, reflected by normal hypothalamic NPY and CRF content.
2158 12965092 Simultaneously, there was an increase in the mRNAs of the ACTH-receptor and of the steroid-synthesizing enzymes in the fetal adrenal gland of the older, hypoxemic fetuses.
2159 12965092 Growth and maturation of the fetal lung might also have been affected, because of the increase in surfactant-protein A mRNA in the older, hypoxemic animals and the decrease in the insulin-like growth factor-I and its binding protein-5 mRNA in the younger, hypoxemic fetuses.
2160 12970157 Recent work suggests that the melanocortin system is involved in this integration; specifically, central administration of melanocyte-stimulating hormone (MSH) decreases, whereas lack of central MSH signaling increases, peripheral insulin resistance.
2161 12970157 Here we asked whether MSH acting in the periphery has a complementary role in insulin resistance.
2162 12970157 Here we report that homozygous POMC mutants have normal serum levels of insulin, normal fasting levels of glucose, and normal clearance of glucose in glucose tolerance tests.
2163 12970157 However, we found a striking inability of the homozygous POMC mutants to recover from insulin-induced hypoglycemia.
2164 12970157 Both peripheral administration of an MSH analog and supplementation with corticosterone alleviated the hypoglycemia after insulin challenge, but did not make the obese POMC mutant mice diabetic.
2165 12970157 Recent work suggests that the melanocortin system is involved in this integration; specifically, central administration of melanocyte-stimulating hormone (MSH) decreases, whereas lack of central MSH signaling increases, peripheral insulin resistance.
2166 12970157 Here we asked whether MSH acting in the periphery has a complementary role in insulin resistance.
2167 12970157 Here we report that homozygous POMC mutants have normal serum levels of insulin, normal fasting levels of glucose, and normal clearance of glucose in glucose tolerance tests.
2168 12970157 However, we found a striking inability of the homozygous POMC mutants to recover from insulin-induced hypoglycemia.
2169 12970157 Both peripheral administration of an MSH analog and supplementation with corticosterone alleviated the hypoglycemia after insulin challenge, but did not make the obese POMC mutant mice diabetic.
2170 12970157 Recent work suggests that the melanocortin system is involved in this integration; specifically, central administration of melanocyte-stimulating hormone (MSH) decreases, whereas lack of central MSH signaling increases, peripheral insulin resistance.
2171 12970157 Here we asked whether MSH acting in the periphery has a complementary role in insulin resistance.
2172 12970157 Here we report that homozygous POMC mutants have normal serum levels of insulin, normal fasting levels of glucose, and normal clearance of glucose in glucose tolerance tests.
2173 12970157 However, we found a striking inability of the homozygous POMC mutants to recover from insulin-induced hypoglycemia.
2174 12970157 Both peripheral administration of an MSH analog and supplementation with corticosterone alleviated the hypoglycemia after insulin challenge, but did not make the obese POMC mutant mice diabetic.
2175 12970157 Recent work suggests that the melanocortin system is involved in this integration; specifically, central administration of melanocyte-stimulating hormone (MSH) decreases, whereas lack of central MSH signaling increases, peripheral insulin resistance.
2176 12970157 Here we asked whether MSH acting in the periphery has a complementary role in insulin resistance.
2177 12970157 Here we report that homozygous POMC mutants have normal serum levels of insulin, normal fasting levels of glucose, and normal clearance of glucose in glucose tolerance tests.
2178 12970157 However, we found a striking inability of the homozygous POMC mutants to recover from insulin-induced hypoglycemia.
2179 12970157 Both peripheral administration of an MSH analog and supplementation with corticosterone alleviated the hypoglycemia after insulin challenge, but did not make the obese POMC mutant mice diabetic.
2180 12970157 Recent work suggests that the melanocortin system is involved in this integration; specifically, central administration of melanocyte-stimulating hormone (MSH) decreases, whereas lack of central MSH signaling increases, peripheral insulin resistance.
2181 12970157 Here we asked whether MSH acting in the periphery has a complementary role in insulin resistance.
2182 12970157 Here we report that homozygous POMC mutants have normal serum levels of insulin, normal fasting levels of glucose, and normal clearance of glucose in glucose tolerance tests.
2183 12970157 However, we found a striking inability of the homozygous POMC mutants to recover from insulin-induced hypoglycemia.
2184 12970157 Both peripheral administration of an MSH analog and supplementation with corticosterone alleviated the hypoglycemia after insulin challenge, but did not make the obese POMC mutant mice diabetic.
2185 13375524 Comparative studies of alloxan diabetic dog and pancreatectomized diabetic dog on the regulation of the carbohydrate metabolism with special reference to the action of ACTH and adrenocortical hormones on the insulin requirement.
2186 13679250 Leptin stimulates the formation of pro-opiomelanocortin and its products.
2187 13679250 A blood sample was collected and plasma glucose, insulin, leptin, beta-endorphins were measured.
2188 13679250 Leptin and insulin levels were also higher in the HF animals.
2189 13679250 These studies suggest that HF feeding is associated with increased body fat, plasma leptin, insulin, and hypothalamic mu opioid receptors.
2190 14557451 A reappraisal of the utility of somatostatin receptor scintigraphy in patients with ectopic adrenocorticotropin Cushing's syndrome.
2191 14557451 The diagnostic utility of somatostatin receptor scintigraphy (SRS) in EAS has been studied in a limited number of patients with conflicting results.
2192 14578285 Transgenic neuronal expression of proopiomelanocortin attenuates hyperphagic response to fasting and reverses metabolic impairments in leptin-deficient obese mice.
2193 14578285 Hypothalamic proopiomelanocortin (POMC) gene expression is reduced in many forms of obesity and diabetes, particularly in those attributable to deficiencies in leptin or its receptor.
2194 14578285 To assess the functional significance of POMC in mediating metabolic phenotypes associated with leptin deficiency, leptin-deficient mice bearing a transgene expressing the POMC gene under control of the neuron-specific enolase promoter were produced.
2195 14578285 Furthermore, the POMC transgene partially reversed obesity, hyperphagia, and hypothermia and effectively normalized hyperglycemia, glucosuria, glucose intolerance, and insulin resistance in leptin-deficient mice.
2196 14578285 Furthermore, the POMC transgene normalized the profile of hepatic and adipose gene expression associated with gluconeogenesis, glucose output, and insulin sensitivity.
2197 14578285 These results indicate that central POMC is a key modulator of glucose homeostasis and that agonists of POMC products may provide effective therapy in treating impairments in glucose homeostasis when hypothalamic POMC expression is reduced, as occurs with leptin deficiency, hypothalamic damage, and aging.
2198 14578285 Transgenic neuronal expression of proopiomelanocortin attenuates hyperphagic response to fasting and reverses metabolic impairments in leptin-deficient obese mice.
2199 14578285 Hypothalamic proopiomelanocortin (POMC) gene expression is reduced in many forms of obesity and diabetes, particularly in those attributable to deficiencies in leptin or its receptor.
2200 14578285 To assess the functional significance of POMC in mediating metabolic phenotypes associated with leptin deficiency, leptin-deficient mice bearing a transgene expressing the POMC gene under control of the neuron-specific enolase promoter were produced.
2201 14578285 Furthermore, the POMC transgene partially reversed obesity, hyperphagia, and hypothermia and effectively normalized hyperglycemia, glucosuria, glucose intolerance, and insulin resistance in leptin-deficient mice.
2202 14578285 Furthermore, the POMC transgene normalized the profile of hepatic and adipose gene expression associated with gluconeogenesis, glucose output, and insulin sensitivity.
2203 14578285 These results indicate that central POMC is a key modulator of glucose homeostasis and that agonists of POMC products may provide effective therapy in treating impairments in glucose homeostasis when hypothalamic POMC expression is reduced, as occurs with leptin deficiency, hypothalamic damage, and aging.
2204 14578285 Transgenic neuronal expression of proopiomelanocortin attenuates hyperphagic response to fasting and reverses metabolic impairments in leptin-deficient obese mice.
2205 14578285 Hypothalamic proopiomelanocortin (POMC) gene expression is reduced in many forms of obesity and diabetes, particularly in those attributable to deficiencies in leptin or its receptor.
2206 14578285 To assess the functional significance of POMC in mediating metabolic phenotypes associated with leptin deficiency, leptin-deficient mice bearing a transgene expressing the POMC gene under control of the neuron-specific enolase promoter were produced.
2207 14578285 Furthermore, the POMC transgene partially reversed obesity, hyperphagia, and hypothermia and effectively normalized hyperglycemia, glucosuria, glucose intolerance, and insulin resistance in leptin-deficient mice.
2208 14578285 Furthermore, the POMC transgene normalized the profile of hepatic and adipose gene expression associated with gluconeogenesis, glucose output, and insulin sensitivity.
2209 14578285 These results indicate that central POMC is a key modulator of glucose homeostasis and that agonists of POMC products may provide effective therapy in treating impairments in glucose homeostasis when hypothalamic POMC expression is reduced, as occurs with leptin deficiency, hypothalamic damage, and aging.
2210 14578285 Transgenic neuronal expression of proopiomelanocortin attenuates hyperphagic response to fasting and reverses metabolic impairments in leptin-deficient obese mice.
2211 14578285 Hypothalamic proopiomelanocortin (POMC) gene expression is reduced in many forms of obesity and diabetes, particularly in those attributable to deficiencies in leptin or its receptor.
2212 14578285 To assess the functional significance of POMC in mediating metabolic phenotypes associated with leptin deficiency, leptin-deficient mice bearing a transgene expressing the POMC gene under control of the neuron-specific enolase promoter were produced.
2213 14578285 Furthermore, the POMC transgene partially reversed obesity, hyperphagia, and hypothermia and effectively normalized hyperglycemia, glucosuria, glucose intolerance, and insulin resistance in leptin-deficient mice.
2214 14578285 Furthermore, the POMC transgene normalized the profile of hepatic and adipose gene expression associated with gluconeogenesis, glucose output, and insulin sensitivity.
2215 14578285 These results indicate that central POMC is a key modulator of glucose homeostasis and that agonists of POMC products may provide effective therapy in treating impairments in glucose homeostasis when hypothalamic POMC expression is reduced, as occurs with leptin deficiency, hypothalamic damage, and aging.
2216 14578285 Transgenic neuronal expression of proopiomelanocortin attenuates hyperphagic response to fasting and reverses metabolic impairments in leptin-deficient obese mice.
2217 14578285 Hypothalamic proopiomelanocortin (POMC) gene expression is reduced in many forms of obesity and diabetes, particularly in those attributable to deficiencies in leptin or its receptor.
2218 14578285 To assess the functional significance of POMC in mediating metabolic phenotypes associated with leptin deficiency, leptin-deficient mice bearing a transgene expressing the POMC gene under control of the neuron-specific enolase promoter were produced.
2219 14578285 Furthermore, the POMC transgene partially reversed obesity, hyperphagia, and hypothermia and effectively normalized hyperglycemia, glucosuria, glucose intolerance, and insulin resistance in leptin-deficient mice.
2220 14578285 Furthermore, the POMC transgene normalized the profile of hepatic and adipose gene expression associated with gluconeogenesis, glucose output, and insulin sensitivity.
2221 14578285 These results indicate that central POMC is a key modulator of glucose homeostasis and that agonists of POMC products may provide effective therapy in treating impairments in glucose homeostasis when hypothalamic POMC expression is reduced, as occurs with leptin deficiency, hypothalamic damage, and aging.
2222 14578285 Transgenic neuronal expression of proopiomelanocortin attenuates hyperphagic response to fasting and reverses metabolic impairments in leptin-deficient obese mice.
2223 14578285 Hypothalamic proopiomelanocortin (POMC) gene expression is reduced in many forms of obesity and diabetes, particularly in those attributable to deficiencies in leptin or its receptor.
2224 14578285 To assess the functional significance of POMC in mediating metabolic phenotypes associated with leptin deficiency, leptin-deficient mice bearing a transgene expressing the POMC gene under control of the neuron-specific enolase promoter were produced.
2225 14578285 Furthermore, the POMC transgene partially reversed obesity, hyperphagia, and hypothermia and effectively normalized hyperglycemia, glucosuria, glucose intolerance, and insulin resistance in leptin-deficient mice.
2226 14578285 Furthermore, the POMC transgene normalized the profile of hepatic and adipose gene expression associated with gluconeogenesis, glucose output, and insulin sensitivity.
2227 14578285 These results indicate that central POMC is a key modulator of glucose homeostasis and that agonists of POMC products may provide effective therapy in treating impairments in glucose homeostasis when hypothalamic POMC expression is reduced, as occurs with leptin deficiency, hypothalamic damage, and aging.
2228 14599113 Basal ACTH and DHEA-S levels were significantly lower (p < 0.05 and p < 0.01, respectively), and midnight cortisol and 24-hour urinary free cortisol levels were significantly higher in patients with SCS (p < 0.001 and p < 0.05, respectively).
2229 14599113 Suppressed ACTH and DHEA-S levels, and high midnight cortisol levels may be some clues for SCS in patients with adrenal incidentaloma.
2230 14599113 Basal ACTH and DHEA-S levels were significantly lower (p < 0.05 and p < 0.01, respectively), and midnight cortisol and 24-hour urinary free cortisol levels were significantly higher in patients with SCS (p < 0.001 and p < 0.05, respectively).
2231 14599113 Suppressed ACTH and DHEA-S levels, and high midnight cortisol levels may be some clues for SCS in patients with adrenal incidentaloma.
2232 14600075 Examination of hypothalamic agouti gene-related peptide and proopiomelanocortin mRNA shows normalization of these leptin-regulated transcripts.
2233 14601484 Basal plasma levels of LEP, beta-endorphin (B-EP), cortisol (F), insulin-like growth factor-1 (IGF-1) were measured with RIA test kits.
2234 14601484 Plasma adrenocorticotrophin (ACTH) levels, serum levels of insulin (IRI) and growth hormone (GH) were measured with IRMA test kits.
2235 14601484 Moreover, KON and AD groups demonstrated a negative correlation between plasma ACTH and LEP levels.
2236 14601484 In Addison's disease, downregulation of leptin may reflect an adaptation mechanism to cortisol deficiency and result from low insulin and extremely high adrenocorticotrophin levels.
2237 14601484 In obese subjects, leptin levels may be influenced by cortisol levels, high levels of insulin, IGF-1, and beta-endorphin as well as low levels of growth hormone.
2238 14601484 Basal plasma levels of LEP, beta-endorphin (B-EP), cortisol (F), insulin-like growth factor-1 (IGF-1) were measured with RIA test kits.
2239 14601484 Plasma adrenocorticotrophin (ACTH) levels, serum levels of insulin (IRI) and growth hormone (GH) were measured with IRMA test kits.
2240 14601484 Moreover, KON and AD groups demonstrated a negative correlation between plasma ACTH and LEP levels.
2241 14601484 In Addison's disease, downregulation of leptin may reflect an adaptation mechanism to cortisol deficiency and result from low insulin and extremely high adrenocorticotrophin levels.
2242 14601484 In obese subjects, leptin levels may be influenced by cortisol levels, high levels of insulin, IGF-1, and beta-endorphin as well as low levels of growth hormone.
2243 14601484 Basal plasma levels of LEP, beta-endorphin (B-EP), cortisol (F), insulin-like growth factor-1 (IGF-1) were measured with RIA test kits.
2244 14601484 Plasma adrenocorticotrophin (ACTH) levels, serum levels of insulin (IRI) and growth hormone (GH) were measured with IRMA test kits.
2245 14601484 Moreover, KON and AD groups demonstrated a negative correlation between plasma ACTH and LEP levels.
2246 14601484 In Addison's disease, downregulation of leptin may reflect an adaptation mechanism to cortisol deficiency and result from low insulin and extremely high adrenocorticotrophin levels.
2247 14601484 In obese subjects, leptin levels may be influenced by cortisol levels, high levels of insulin, IGF-1, and beta-endorphin as well as low levels of growth hormone.
2248 14601484 Basal plasma levels of LEP, beta-endorphin (B-EP), cortisol (F), insulin-like growth factor-1 (IGF-1) were measured with RIA test kits.
2249 14601484 Plasma adrenocorticotrophin (ACTH) levels, serum levels of insulin (IRI) and growth hormone (GH) were measured with IRMA test kits.
2250 14601484 Moreover, KON and AD groups demonstrated a negative correlation between plasma ACTH and LEP levels.
2251 14601484 In Addison's disease, downregulation of leptin may reflect an adaptation mechanism to cortisol deficiency and result from low insulin and extremely high adrenocorticotrophin levels.
2252 14601484 In obese subjects, leptin levels may be influenced by cortisol levels, high levels of insulin, IGF-1, and beta-endorphin as well as low levels of growth hormone.
2253 14635733 All 21OHAb positive patients had normal basal cortisol and adrenocorticotropin (ACTH), normal cortisol response after ACTH stimulation, but high plasma renin activity.
2254 14653225 Leptin activates Arc neurons producing alpha-melanocyte-stimulating hormone (alpha-MSH) and inhibits those producing agouti-related protein (AgRP). alpha-MSH is an endogenous agonist for the melanocortin-4 receptor (MC4-R) that is expressed exclusively in the central nervous system (CNS), whereas AgRP acts as a MC4-R antagonist.
2255 14671163 Ghrelin levels correlate with insulin levels, insulin resistance, and high-density lipoprotein cholesterol, but not with gender, menopausal status, or cortisol levels in humans.
2256 14671163 The gut peptide, ghrelin, may participate in the control of energy homeostasis and pituitary hormone secretion in humans, stimulating both food intake and, at pharmacological doses, ACTH and cortisol secretion.
2257 14671163 Therefore, 60 adult men and women of widely varying ages and weights were characterized in terms of body composition and levels of ghrelin, glucose, insulin, lipids, and cortisol.
2258 14671163 Fasting ghrelin levels correlated most strongly with insulin levels (r = -0.39; P = 0.002), insulin resistance as determined by the quantitative insulin sensitivity check index (r = 0.38; P = 0.003), and high-density lipoprotein cholesterol levels (r = 0.33; P = 0.009).
2259 14671163 Meal-induced ghrelin suppression correlated with the postprandial rise in insulin (r = 0.39; P < 0.05).
2260 14671163 Our data are consistent with the hypotheses that insulin may negatively regulate ghrelin and that high-density lipoprotein may be a carrier particle for circulating ghrelin.
2261 14686961 Role of fat amount and type in ameliorating diet-induced obesity: insights at the level of hypothalamic arcuate nucleus leptin receptor, neuropeptide Y and pro-opiomelanocortin mRNA expression.
2262 14691009 To further elucidate the role of proteases capable of cleaving N-terminal proopiomelanocortin (N-POMC)-derived peptides, we have cloned two cDNAs encoding isoforms of the airway trypsin-like protease (AT) from mouse (MAT) and rat (RAT), respectively.
2263 14693422 In cultured adrenocortical cells, SIK1 is rapidly but transiently induced by adrenocorticotropin (ACTH) treatment, suggesting that it contributes to ACTH-mediated induction of steroidogenic enzymes.
2264 14693422 However, ACTH treatment of Y1 mouse adrenocortical cells stimulates a rapid translocation of SIK1 from the nucleus to the cytoplasm, and SIK1 represses the transcription of a steroidogenic enzyme by inhibiting the action of cAMP-responsive elements in the promoter.
2265 14693422 SIK2 is found in adipocytes and phosphorylates a specific serine residue in insulin receptor substrate-1.
2266 14693422 Thus, members of the SIK family are emerging as important modulators of key processes such as steroid hormone biosynthesis by the adrenal cortex and insulin signaling in adipocytes.
2267 14693422 In cultured adrenocortical cells, SIK1 is rapidly but transiently induced by adrenocorticotropin (ACTH) treatment, suggesting that it contributes to ACTH-mediated induction of steroidogenic enzymes.
2268 14693422 However, ACTH treatment of Y1 mouse adrenocortical cells stimulates a rapid translocation of SIK1 from the nucleus to the cytoplasm, and SIK1 represses the transcription of a steroidogenic enzyme by inhibiting the action of cAMP-responsive elements in the promoter.
2269 14693422 SIK2 is found in adipocytes and phosphorylates a specific serine residue in insulin receptor substrate-1.
2270 14693422 Thus, members of the SIK family are emerging as important modulators of key processes such as steroid hormone biosynthesis by the adrenal cortex and insulin signaling in adipocytes.
2271 14700749 Tumor galanin and ACTH contents were closely correlated in all tumors.
2272 14700749 In some tumors galanin mRNA and POMC levels coexisted, in others they were essentially in different cell populations.
2273 14700749 Corticotrophin releasing hormone injections in two patients caused ACTH, but no detectable galanin release into sinus petrosus.
2274 14700749 Our results demonstrate that corticotroph, but not GH adenomas, express high levels of galanin, in addition to ACTH, and that in some tumors both polypeptides are synthesised in the same cell population.
2275 14700749 Tumor galanin and ACTH contents were closely correlated in all tumors.
2276 14700749 In some tumors galanin mRNA and POMC levels coexisted, in others they were essentially in different cell populations.
2277 14700749 Corticotrophin releasing hormone injections in two patients caused ACTH, but no detectable galanin release into sinus petrosus.
2278 14700749 Our results demonstrate that corticotroph, but not GH adenomas, express high levels of galanin, in addition to ACTH, and that in some tumors both polypeptides are synthesised in the same cell population.
2279 14700749 Tumor galanin and ACTH contents were closely correlated in all tumors.
2280 14700749 In some tumors galanin mRNA and POMC levels coexisted, in others they were essentially in different cell populations.
2281 14700749 Corticotrophin releasing hormone injections in two patients caused ACTH, but no detectable galanin release into sinus petrosus.
2282 14700749 Our results demonstrate that corticotroph, but not GH adenomas, express high levels of galanin, in addition to ACTH, and that in some tumors both polypeptides are synthesised in the same cell population.
2283 14700749 Tumor galanin and ACTH contents were closely correlated in all tumors.
2284 14700749 In some tumors galanin mRNA and POMC levels coexisted, in others they were essentially in different cell populations.
2285 14700749 Corticotrophin releasing hormone injections in two patients caused ACTH, but no detectable galanin release into sinus petrosus.
2286 14700749 Our results demonstrate that corticotroph, but not GH adenomas, express high levels of galanin, in addition to ACTH, and that in some tumors both polypeptides are synthesised in the same cell population.
2287 14709154 It has previously been suggested that ACTH and ACTH-related peptides may act as paracrine modulators of insulin secretion in the islets of Langerhans.
2288 14709154 Two inhibitors of the protein kinase A (PKA) signaling pathway, Rp-cAMPS (500 microM) and H-89 (10 microM), abolished the insulin secretory response to ACTH(1-24) (0.5-10 nM).
2289 14709154 Overall the results demonstrate that the MC2-R is expressed in beta-cells and suggest that activation of the receptor by ACTH initiates insulin secretion through the activation of PKA in association with Ca2+ influx into beta-cells.
2290 14711793 At early time points, we measured organ histology, leukocyte accumulation, myeloperoxidase activity, activation of nuclear factor-kappaB, p38 mitogen-activated protein kinase, c-Jun, and activator protein-1 pathways, in addition to messenger RNA for intracellular adhesion molecule-1 and tumor necrosis factor-alpha.
2291 14711793 Renal ischemia rapidly activated kidney and lung nuclear factor-kappaB, p38 mitogen-activated protein kinase, c-Jun, and activator protein-1 pathways, and distant lung injury.
2292 14711793 Alpha-MSH administration immediately before reperfusion significantly decreased kidney and lung injury and prevented activation of kidney and lung transcription factors and stress response genes, and lung intracellular adhesion molecule-1 and tumor necrosis factor-alpha at early time points after renal ischemia/reperfusion.
2293 14724732 These are fatty acid-binding protein 2 (FABP2), FABP4, and FABP5 for Olep1, and proopiomelanocortin (POMC) and glucose regulatory protein (GCKR) for Olep2.
2294 14749508 Regulation of the pro-opiomelanocortin (pomc) and the thyrotropin-releasing hormone (trh) genes by leptin is particularly well understood.
2295 14988462 In the ARC, orexigenic neuropeptides such as neuropeptide Y (NPY), galanin (GAL), and agouti-related peptide (AGRP) and anorexigenic neuropeptides such as proopiomelanocortin (POMC) and alpha-melanocyte-stimulating hormone (MSH) are expressed.
2296 14988462 The ARC of CO-GD rats showed increased immunopositivity of both NPY and AGRP under basal conditions, despite normal levels of glucose, leptin, and insulin.
2297 15001431 Followup during the suckling, postsuckling, and adult stages (7-120 days of age) revealed hypoleptinemia in males and females, and hypoinsulinemia, a relative increase in the glucose-to-insulin ratio, and a larger increase in skeletal muscle glucose transporter (GLUT 4) concentrations predominantly in the males, reflective of a catabolic state associated with a persistent decrease in body weight gain.
2298 15001431 In addition, the changes in the hormonal/metabolic milieu were associated with an increase in hypothalamic neuropeptide Y content in males and females during the suckling phase, which persisted only in the 120-day-old female with a transient postnatal decline in alpha-melanocyte-stimulating hormone and corticotropin-releasing factor.
2299 15003481 Further studies revealed not only resistance of plasma concentrations of cortisol, adrenocorticotropic hormone (ACTH) and alpha-melanocyte-stimulating hormone (alpha-MSH) to suppression by a low dose of dexamethasone, but also elevated plasma concentrations of growth hormone (GH) and insulin-like growth factor I (IGF-I).
2300 15070774 Signal transducer and activator of transcription (STAT)3 is widely expressed in the CNS during development and adulthood.
2301 15070774 STAT3 has been implicated in the control of neuron/glial differentiation and leptin-mediated energy homeostasis, but the physiological role and degree of involvement of STAT3 in these processes is not defined and controversial because of the lack of a direct genetic model.
2302 15070774 Administering a melanocortin-3/4 receptor agonist abrogated the hyperphagia and hypothalamic immunohistochemistry showed a marked reduction in proopiomelanocortin with an increase in neuropeptide Y and agouti-related protein.
2303 15070774 STAT3(N-/-) mice are hyperleptinemic, suggesting a leptin-resistant condition.
2304 15070935 Low- and standard-dose corticotropin and insulin hypoglycemia testing in the assessment of hypothalamic-pituitary-adrenal function after pituitary surgery.
2305 15070935 We compared low-dose (1 micro g iv) and standard-dose (250 micro g im) corticotropin tests performed 1 and 4-6 wk after pituitary surgery with an insulin hypoglycemia test performed at 4-6 wk.
2306 15070935 Low- and standard-dose corticotropin and insulin hypoglycemia testing in the assessment of hypothalamic-pituitary-adrenal function after pituitary surgery.
2307 15070935 We compared low-dose (1 micro g iv) and standard-dose (250 micro g im) corticotropin tests performed 1 and 4-6 wk after pituitary surgery with an insulin hypoglycemia test performed at 4-6 wk.
2308 15093691 In addition, hypothalamic expression of orexigenic neuropeptide Y and agouti-related peptide mRNA levels was upregulated while the anorexigenic cocaine and amphetamine regulated transcript and proopiomelanocortin mRNA levels were reduced.
2309 15111491 These impaired responses were associated with the destruction of 3v tanycytes, reduced glial fibrillary acidic protein-immunoreactivity surrounding the 3v, neuronal swelling, and decreased arcuate nucleus neuropeptide Y (NPY) mRNA.
2310 15111491 At this time there were significant decreases in GK, NPY, and proopiomelanocortin mRNA.
2311 15128476 Primary aldosteronism, congenital adrenal hyperplasia, Cushing's syndrome, glucocorticoid-remediable aldosteronism, and corticotropin-dependent forms of adrenal pathology can cause hypertension by excessive production of adrenocortical hormones.
2312 15133294 The results showed that the radon and thermal therapy enhanced the antioxidation functions, such as the activities of superoxide dismutase (SOD) and catalase, which inhibit lipid peroxidation and total cholesterol produced in the body.
2313 15133294 Moreover the therapy enhanced concanavalin A (ConA)-induced mitogen response and increased the percentage of CD4 positive cells, which is the marker of helper T cells, and decreased the percentage of CD8 positive cells, which is the common marker of killer T cells and suppressor T cells, in the white blood cell differentiation antigen (CD8/CD4) assay.
2314 15133294 Furthermore, the therapy increased the levels of alpha atrial natriuretic polypeptide (alpha ANP), beta endorphin, adrenocorticotropic hormone (ACTH), insulin and glucose-6-phosphate dehydrogenase (G-6-PDH), and it decreased the vasopression level.
2315 15240363 Acutely, glucocorticoids act to inhibit stress-induced corticotrophin-releasing factor (CRF) and adrenocorticotrophic hormone (ACTH) secretion through their actions in brain and anterior pituitary (canonical feedback).
2316 15240363 Infusion of corticosterone intracerebroventricularly into adrenalectomized rats increases basal ACTH, tends to increase CRF, and allows facilitation of ACTH responses to repeated restraint.
2317 15240363 Increased energy stores feedback on brain to inhibit hypothalamic CRF and decrease the expression of dopamine-beta-hydroxylase in the locus coeruleus.
2318 15240363 Acutely, glucocorticoids act to inhibit stress-induced corticotrophin-releasing factor (CRF) and adrenocorticotrophic hormone (ACTH) secretion through their actions in brain and anterior pituitary (canonical feedback).
2319 15240363 Infusion of corticosterone intracerebroventricularly into adrenalectomized rats increases basal ACTH, tends to increase CRF, and allows facilitation of ACTH responses to repeated restraint.
2320 15240363 Increased energy stores feedback on brain to inhibit hypothalamic CRF and decrease the expression of dopamine-beta-hydroxylase in the locus coeruleus.
2321 15277371 Peptide YY(3-36) (PYY(3-36)) is released by the gut in response to nutrient ingestion.
2322 15277371 It modulates the activities of orexigenic neuropeptide Y (NPY) neurons and anorexigenic proopiomelanocortin (POMC) neurons in the hypothalamus to inhibit food intake.
2323 15277371 Because both NPY and POMC have also been shown to impact insulin action, we wondered whether PYY(3-36) could improve insulin sensitivity.
2324 15277371 In contrast, PYY(3-36) did not impact insulin action on endogenous glucose production or FFA metabolism.
2325 15277371 These data indicate that PYY(3-36) reinforces insulin action on glucose disposal in mice fed a high-fat diet, through a mechanism that is independent of food intake and body weight.
2326 15277371 Peptide YY(3-36) (PYY(3-36)) is released by the gut in response to nutrient ingestion.
2327 15277371 It modulates the activities of orexigenic neuropeptide Y (NPY) neurons and anorexigenic proopiomelanocortin (POMC) neurons in the hypothalamus to inhibit food intake.
2328 15277371 Because both NPY and POMC have also been shown to impact insulin action, we wondered whether PYY(3-36) could improve insulin sensitivity.
2329 15277371 In contrast, PYY(3-36) did not impact insulin action on endogenous glucose production or FFA metabolism.
2330 15277371 These data indicate that PYY(3-36) reinforces insulin action on glucose disposal in mice fed a high-fat diet, through a mechanism that is independent of food intake and body weight.
2331 15277373 Neuropeptide Y (NPY) inhibited and alpha-melanocyte-stimulating hormone stimulated ARC glucose-excited neurons.
2332 15292297 Immunohistochemically, in contrast to primary tumor and first relapse, we found strong immunostaining for ACTH in tumor cells of the second relapse and a MIB-1 index greater than 20%.
2333 15322334 Selenium deficiency impairs corticosterone and leptin responses to adrenocorticotropin in the rat.
2334 15322334 Selenium deficiency did not affect basal and short-term adrenocorticotropin (ACTH) stimulated corticosterone or leptin concentrations.
2335 15322334 In contrast, after long-term ACTH stimulation, selenium deficiency caused a doubling in adrenal isoprostane content and blunted the increase in corticosterone and leptin concentrations observed in Se+ animals.
2336 15322334 Plasma leptin concentrations were 50% lower in Se- compared to Se+ animals following long-term ACTH.
2337 15322334 Our results suggest that oxidative stress causes a decrease in circulating corticosterone in response to ACTH, and, as a consequence, a decrease in plasma leptin concentrations.
2338 15322334 Selenium deficiency impairs corticosterone and leptin responses to adrenocorticotropin in the rat.
2339 15322334 Selenium deficiency did not affect basal and short-term adrenocorticotropin (ACTH) stimulated corticosterone or leptin concentrations.
2340 15322334 In contrast, after long-term ACTH stimulation, selenium deficiency caused a doubling in adrenal isoprostane content and blunted the increase in corticosterone and leptin concentrations observed in Se+ animals.
2341 15322334 Plasma leptin concentrations were 50% lower in Se- compared to Se+ animals following long-term ACTH.
2342 15322334 Our results suggest that oxidative stress causes a decrease in circulating corticosterone in response to ACTH, and, as a consequence, a decrease in plasma leptin concentrations.
2343 15322334 Selenium deficiency impairs corticosterone and leptin responses to adrenocorticotropin in the rat.
2344 15322334 Selenium deficiency did not affect basal and short-term adrenocorticotropin (ACTH) stimulated corticosterone or leptin concentrations.
2345 15322334 In contrast, after long-term ACTH stimulation, selenium deficiency caused a doubling in adrenal isoprostane content and blunted the increase in corticosterone and leptin concentrations observed in Se+ animals.
2346 15322334 Plasma leptin concentrations were 50% lower in Se- compared to Se+ animals following long-term ACTH.
2347 15322334 Our results suggest that oxidative stress causes a decrease in circulating corticosterone in response to ACTH, and, as a consequence, a decrease in plasma leptin concentrations.
2348 15322334 Selenium deficiency impairs corticosterone and leptin responses to adrenocorticotropin in the rat.
2349 15322334 Selenium deficiency did not affect basal and short-term adrenocorticotropin (ACTH) stimulated corticosterone or leptin concentrations.
2350 15322334 In contrast, after long-term ACTH stimulation, selenium deficiency caused a doubling in adrenal isoprostane content and blunted the increase in corticosterone and leptin concentrations observed in Se+ animals.
2351 15322334 Plasma leptin concentrations were 50% lower in Se- compared to Se+ animals following long-term ACTH.
2352 15322334 Our results suggest that oxidative stress causes a decrease in circulating corticosterone in response to ACTH, and, as a consequence, a decrease in plasma leptin concentrations.
2353 15322334 Selenium deficiency impairs corticosterone and leptin responses to adrenocorticotropin in the rat.
2354 15322334 Selenium deficiency did not affect basal and short-term adrenocorticotropin (ACTH) stimulated corticosterone or leptin concentrations.
2355 15322334 In contrast, after long-term ACTH stimulation, selenium deficiency caused a doubling in adrenal isoprostane content and blunted the increase in corticosterone and leptin concentrations observed in Se+ animals.
2356 15322334 Plasma leptin concentrations were 50% lower in Se- compared to Se+ animals following long-term ACTH.
2357 15322334 Our results suggest that oxidative stress causes a decrease in circulating corticosterone in response to ACTH, and, as a consequence, a decrease in plasma leptin concentrations.
2358 15372367 Mutation analysis of leukemia inhibitory factor-receptor (LIF-R) in ACTH-secreting pituitary adenomas.
2359 15372367 LIF and its receptor LIF-R are abundantly expressed in normal pituitaries and in ACTH producing adenomas.
2360 15386812 Mediation of beta-endorphin in exercise-induced improvement in insulin resistance in obese Zucker rats.
2361 15472174 An insertional polymorphism of the proopiomelanocortin gene is associated with fasting insulin levels in childhood obesity.
2362 15472174 The aim of this study was to investigate the influence of proopiomelanocortin (POMC) in the variability of insulin levels in early-onset obesity.
2363 15472174 An insertional polymorphism of the proopiomelanocortin gene is associated with fasting insulin levels in childhood obesity.
2364 15472174 The aim of this study was to investigate the influence of proopiomelanocortin (POMC) in the variability of insulin levels in early-onset obesity.
2365 15481810 These so-called hypophysiotropic neurons are under feedback inhibition by circulating levels of thyroid hormone, mediated through interactions with the beta2 thyroid hormone receptor (TRbeta2) and competition with the phosphorylated form of cyclic adenosine 5'-monophosphate response element binding protein (CREB) for a multifunctional binding site in the TRH gene.
2366 15481810 These factors include alpha melanocyte-stimulating hormone (alphaMSH) and cocaine- and amphetamine-regulated transcript (CART), and agouti-related protein (AGRP) and neuropeptide Y (NPY), substances co-produced by distinct populations of leptin-responsive neurons in the hypothalamic arcuate nucleus.
2367 15494609 Hippocampal glucocorticoid receptor (GR), hypothalamic paraventricular nucleus (PVN) GR and corticotropin-releasing hormone (CRH), and pituitary GR and proopiomelanocortin (POMC) mRNA levels did not differ.
2368 15494609 We conclude that blunted corticosterone responses to hypoglycemia in diabetic rats are not due to altered basal expression of GR, CRH, and POMC in the hippocampus, PVN, and pituitary.
2369 15494609 Hippocampal glucocorticoid receptor (GR), hypothalamic paraventricular nucleus (PVN) GR and corticotropin-releasing hormone (CRH), and pituitary GR and proopiomelanocortin (POMC) mRNA levels did not differ.
2370 15494609 We conclude that blunted corticosterone responses to hypoglycemia in diabetic rats are not due to altered basal expression of GR, CRH, and POMC in the hippocampus, PVN, and pituitary.
2371 15505757 Medical history, physical examination, and basal levels of free testosterone (fT), androstenedione, follicle-stimulating hormone (FSH), luteinizing hormone (LH), dehydroepiandrosterone-sulphate (DHEAS), 17 hydroxyprogesterone (17-OHP), 11-deoxycortisol (11-S), thyroid hormones, thyroid stimulating hormone (TSH), and prolactin were determined.
2372 15505757 ACTH stimulation test was performed for the diagnosis of non-classic congenital adrenal hyperplasia (NCAH).
2373 15522996 Circulating resistin in lean, obese, and insulin-resistant mouse models: lack of association with insulinemia and glycemia.
2374 15522996 Resistin is an adipocyte-secreted hormone proposed to link obesity with insulin resistance and diabetes, but no previous study has performed a joint quantitative evaluation of white adipose tissue (WAT) resistin mRNA expression and serum levels in relation to insulinemia and glycemia in mice.
2375 15522996 We have thus comparatively assessed WAT resistin mRNA expression and serum resistin levels in lean C57BL/6J mice and various mouse models of obesity, including diet-induced obese (DIO) C57BL/6J mice, high fat-fed TNF-alpha-/- mice, and brown adipose tissue (BAT)-deficient uncoupling protein-diphtheria toxin A chain (UCP1-DTA) mice.
2376 15522996 We also studied whether treatment with the weight-reducing and insulin-sensitizing compounds, MTII, an alpha-melanocyte-stimulating hormone analog, or CNTF(Ax15), a ciliary neurotrophic factor analog, alters resistin mRNA expression and/or circulating levels in lean and DIO C57BL/6J mice.
2377 15522996 We find that resistin mRNA expression is similar in DIO and lean C57BL/6J mice, as well as in TNF-alpha-/- and wild-type (WT) mice.
2378 15522996 Circulating resistin levels, however, are higher in DIO C57BL/6J, high fat-fed TNF-alpha-/-, and UCP1-DTA mice compared with lean controls.
2379 15522996 Moreover, although resistin mRNA expression is upregulated by MTII treatment for 24 h and downregulated by CNTF(Ax15) treatment for 3 or 7 days, circulating resistin levels are not altered by MTII or CNTF(Ax15) treatment.
2380 15522996 In addition, serum resistin levels, but not resistin mRNA expression levels, are correlated with body weight, and neither resistin mRNA expression nor serum resistin levels are correlated with serum insulin or glucose levels.
2381 15522996 We conclude that transcriptional regulation of resistin in WAT does not correlate with circulating resistin levels and that circulating resistin is unlikely to play a major endocrine role in insulin resistance or glycemia in mice.
2382 15525585 Diurnal changes in hypothalamic neuropeptide and SOCS-3 expression: effects of lactation and relationship with serum leptin and food intake.
2383 15525585 The mechanisms responsible for the diurnal and lactation-induced changes in food intake are still unresolved, hence we have further investigated the possible roles of serum leptin and hypothalamic expression of neuropeptide Y (NPY), agouti-related peptide (AgRP) and pro-opiomelanocortin (POMC) in rats.
2384 15525585 Suppressor of cytokine signalling-3 (SOCS-3) acts as a feedback inhibitor of leptin signalling in the hypothalamus, hence changes in expression of SOCS-3 were also investigated.
2385 15525585 Changes in expression of NPY, AgRP or POMC alone could not account for the diurnal changes in intake and their alteration by lactation.
2386 15525585 However, there were increased AgRP mRNA:POMC mRNA ratios at night and also during lactation, which were very similar to estimated changes in food intake.
2387 15525585 Such changes in expression may result in dominance of the orexigenic AgRP peptide over the appetite-suppressing POMC-derived peptides, and so could contribute to the hyperphagia in these states.
2388 15525585 Diurnal and lactation-related changes in the AgRP mRNA:POMC mRNA ratio and food intake are not due to changes in leptin alone.
2389 15525585 Diurnal changes in hypothalamic neuropeptide and SOCS-3 expression: effects of lactation and relationship with serum leptin and food intake.
2390 15525585 The mechanisms responsible for the diurnal and lactation-induced changes in food intake are still unresolved, hence we have further investigated the possible roles of serum leptin and hypothalamic expression of neuropeptide Y (NPY), agouti-related peptide (AgRP) and pro-opiomelanocortin (POMC) in rats.
2391 15525585 Suppressor of cytokine signalling-3 (SOCS-3) acts as a feedback inhibitor of leptin signalling in the hypothalamus, hence changes in expression of SOCS-3 were also investigated.
2392 15525585 Changes in expression of NPY, AgRP or POMC alone could not account for the diurnal changes in intake and their alteration by lactation.
2393 15525585 However, there were increased AgRP mRNA:POMC mRNA ratios at night and also during lactation, which were very similar to estimated changes in food intake.
2394 15525585 Such changes in expression may result in dominance of the orexigenic AgRP peptide over the appetite-suppressing POMC-derived peptides, and so could contribute to the hyperphagia in these states.
2395 15525585 Diurnal and lactation-related changes in the AgRP mRNA:POMC mRNA ratio and food intake are not due to changes in leptin alone.
2396 15525585 Diurnal changes in hypothalamic neuropeptide and SOCS-3 expression: effects of lactation and relationship with serum leptin and food intake.
2397 15525585 The mechanisms responsible for the diurnal and lactation-induced changes in food intake are still unresolved, hence we have further investigated the possible roles of serum leptin and hypothalamic expression of neuropeptide Y (NPY), agouti-related peptide (AgRP) and pro-opiomelanocortin (POMC) in rats.
2398 15525585 Suppressor of cytokine signalling-3 (SOCS-3) acts as a feedback inhibitor of leptin signalling in the hypothalamus, hence changes in expression of SOCS-3 were also investigated.
2399 15525585 Changes in expression of NPY, AgRP or POMC alone could not account for the diurnal changes in intake and their alteration by lactation.
2400 15525585 However, there were increased AgRP mRNA:POMC mRNA ratios at night and also during lactation, which were very similar to estimated changes in food intake.
2401 15525585 Such changes in expression may result in dominance of the orexigenic AgRP peptide over the appetite-suppressing POMC-derived peptides, and so could contribute to the hyperphagia in these states.
2402 15525585 Diurnal and lactation-related changes in the AgRP mRNA:POMC mRNA ratio and food intake are not due to changes in leptin alone.
2403 15525585 Diurnal changes in hypothalamic neuropeptide and SOCS-3 expression: effects of lactation and relationship with serum leptin and food intake.
2404 15525585 The mechanisms responsible for the diurnal and lactation-induced changes in food intake are still unresolved, hence we have further investigated the possible roles of serum leptin and hypothalamic expression of neuropeptide Y (NPY), agouti-related peptide (AgRP) and pro-opiomelanocortin (POMC) in rats.
2405 15525585 Suppressor of cytokine signalling-3 (SOCS-3) acts as a feedback inhibitor of leptin signalling in the hypothalamus, hence changes in expression of SOCS-3 were also investigated.
2406 15525585 Changes in expression of NPY, AgRP or POMC alone could not account for the diurnal changes in intake and their alteration by lactation.
2407 15525585 However, there were increased AgRP mRNA:POMC mRNA ratios at night and also during lactation, which were very similar to estimated changes in food intake.
2408 15525585 Such changes in expression may result in dominance of the orexigenic AgRP peptide over the appetite-suppressing POMC-derived peptides, and so could contribute to the hyperphagia in these states.
2409 15525585 Diurnal and lactation-related changes in the AgRP mRNA:POMC mRNA ratio and food intake are not due to changes in leptin alone.
2410 15525585 Diurnal changes in hypothalamic neuropeptide and SOCS-3 expression: effects of lactation and relationship with serum leptin and food intake.
2411 15525585 The mechanisms responsible for the diurnal and lactation-induced changes in food intake are still unresolved, hence we have further investigated the possible roles of serum leptin and hypothalamic expression of neuropeptide Y (NPY), agouti-related peptide (AgRP) and pro-opiomelanocortin (POMC) in rats.
2412 15525585 Suppressor of cytokine signalling-3 (SOCS-3) acts as a feedback inhibitor of leptin signalling in the hypothalamus, hence changes in expression of SOCS-3 were also investigated.
2413 15525585 Changes in expression of NPY, AgRP or POMC alone could not account for the diurnal changes in intake and their alteration by lactation.
2414 15525585 However, there were increased AgRP mRNA:POMC mRNA ratios at night and also during lactation, which were very similar to estimated changes in food intake.
2415 15525585 Such changes in expression may result in dominance of the orexigenic AgRP peptide over the appetite-suppressing POMC-derived peptides, and so could contribute to the hyperphagia in these states.
2416 15525585 Diurnal and lactation-related changes in the AgRP mRNA:POMC mRNA ratio and food intake are not due to changes in leptin alone.
2417 15579751 Identification of patients with Cushing's disease with negative pituitary adrenocorticotropin gradients during inferior petrosal sinus sampling: prolactin as an index of pituitary venous effluent.
2418 15579751 The IPS:P ACTH ratio normalized to IPS:P PRL was greater than 0.8 in all CD patients but was less than 0.6 in EAS patients.
2419 15579751 The IPS:P ACTH ratios normalized to IPS:P PRL were greater than 1.2 in the index cases, which was similar to those with CD.
2420 15579751 Identification of patients with Cushing's disease with negative pituitary adrenocorticotropin gradients during inferior petrosal sinus sampling: prolactin as an index of pituitary venous effluent.
2421 15579751 The IPS:P ACTH ratio normalized to IPS:P PRL was greater than 0.8 in all CD patients but was less than 0.6 in EAS patients.
2422 15579751 The IPS:P ACTH ratios normalized to IPS:P PRL were greater than 1.2 in the index cases, which was similar to those with CD.
2423 15579751 Identification of patients with Cushing's disease with negative pituitary adrenocorticotropin gradients during inferior petrosal sinus sampling: prolactin as an index of pituitary venous effluent.
2424 15579751 The IPS:P ACTH ratio normalized to IPS:P PRL was greater than 0.8 in all CD patients but was less than 0.6 in EAS patients.
2425 15579751 The IPS:P ACTH ratios normalized to IPS:P PRL were greater than 1.2 in the index cases, which was similar to those with CD.
2426 15627023 On tapering, one should be aware of the possible development of corticosteroid dependency or withdrawal effects.Novel therapies include vascular endothelial growth factor receptor inhibitors and corticotropin releasing factor, which should undergo further clinical testing before they can be recommended in practice.
2427 15649453 Orexigenic neuropeptides, like neuropeptide Y (NPY) and agouti-related peptide (AGRP), and anorexigenic neuropeptides, like proopiomelanocortin (POMC) and alpha-melanocyte-stimulating hormone (MSH), are decisively involved in body weight regulation.
2428 15649453 Despite of normal leptin and insulin levels in TSGD offspring, increased immunopositivity of NPY and AGRP appeared.
2429 15662598 The diagnosis is usually established by clinical examination and analysis of serum hormone levels (adrenocorticotropin hormone [ACTH], cortisol, thyroid stimulating hormone [TSH], triiodothyronine [fT3], thyroxine [fT4]).
2430 15774766 Basal: Elevated basal ACTH and corticosterone in STZ rats were normalized with insulin but not phloridzin.
2431 15774766 Increases in hypothalamic corticotrophin-releasing hormone (CRH) and inhibitory hippocampal mineralocorticoid receptor (MR) mRNA with STZ diabetes were not restored with either insulin or phloridzin treatments.
2432 15774766 Insulin and phloridzin restored both ACTH and corticosterone responses in diabetic animals.
2433 15774766 Hypothalamic CRH mRNA and pituitary pro-opiomelanocortin mRNA expression increased following 2 h of hypoglycemia in normal, insulin-treated, and phloridzin-treated diabetic rats but not in untreated diabetic rats.
2434 15774766 Interestingly, hypoglycemia decreased hippocampal MR mRNA in control, insulin-, and phloridzin-treated diabetic rats but not uncontrolled diabetic rats, whereas glucocorticoid receptor mRNA was not altered by hypoglycemia.
2435 15774766 Basal: Elevated basal ACTH and corticosterone in STZ rats were normalized with insulin but not phloridzin.
2436 15774766 Increases in hypothalamic corticotrophin-releasing hormone (CRH) and inhibitory hippocampal mineralocorticoid receptor (MR) mRNA with STZ diabetes were not restored with either insulin or phloridzin treatments.
2437 15774766 Insulin and phloridzin restored both ACTH and corticosterone responses in diabetic animals.
2438 15774766 Hypothalamic CRH mRNA and pituitary pro-opiomelanocortin mRNA expression increased following 2 h of hypoglycemia in normal, insulin-treated, and phloridzin-treated diabetic rats but not in untreated diabetic rats.
2439 15774766 Interestingly, hypoglycemia decreased hippocampal MR mRNA in control, insulin-, and phloridzin-treated diabetic rats but not uncontrolled diabetic rats, whereas glucocorticoid receptor mRNA was not altered by hypoglycemia.
2440 15774766 Basal: Elevated basal ACTH and corticosterone in STZ rats were normalized with insulin but not phloridzin.
2441 15774766 Increases in hypothalamic corticotrophin-releasing hormone (CRH) and inhibitory hippocampal mineralocorticoid receptor (MR) mRNA with STZ diabetes were not restored with either insulin or phloridzin treatments.
2442 15774766 Insulin and phloridzin restored both ACTH and corticosterone responses in diabetic animals.
2443 15774766 Hypothalamic CRH mRNA and pituitary pro-opiomelanocortin mRNA expression increased following 2 h of hypoglycemia in normal, insulin-treated, and phloridzin-treated diabetic rats but not in untreated diabetic rats.
2444 15774766 Interestingly, hypoglycemia decreased hippocampal MR mRNA in control, insulin-, and phloridzin-treated diabetic rats but not uncontrolled diabetic rats, whereas glucocorticoid receptor mRNA was not altered by hypoglycemia.
2445 15829786 Five years after traumatic brain injury, repeat neuroendocrine assessment, prompted by an increasing serum insulin-like growth factor-1 level, showed normal growth hormone and adrenocorticotropin hormone responses.
2446 15841180 We generated mice lacking Irs2 in beta cells and a population of hypothalamic neurons (RIPCreIrs2KO), in all neurons (NesCreIrs2KO), and in proopiomelanocortin neurons (POMCCreIrs2KO) to determine the role of Irs2 in the CNS and beta cell.
2447 15841180 RIPCreIrs2KO and NesCreIrs2KO mice retained leptin sensitivity, which suggests that CNS Irs2 pathways are not required for leptin action.
2448 15841180 RIPCre neurons did not express POMC or neuropeptide Y.
2449 15841180 Insulin and a melanocortin agonist depolarized RIPCre neurons, whereas leptin was ineffective.
2450 15841180 Insulin hyperpolarized and leptin depolarized POMC neurons.
2451 15841180 We generated mice lacking Irs2 in beta cells and a population of hypothalamic neurons (RIPCreIrs2KO), in all neurons (NesCreIrs2KO), and in proopiomelanocortin neurons (POMCCreIrs2KO) to determine the role of Irs2 in the CNS and beta cell.
2452 15841180 RIPCreIrs2KO and NesCreIrs2KO mice retained leptin sensitivity, which suggests that CNS Irs2 pathways are not required for leptin action.
2453 15841180 RIPCre neurons did not express POMC or neuropeptide Y.
2454 15841180 Insulin and a melanocortin agonist depolarized RIPCre neurons, whereas leptin was ineffective.
2455 15841180 Insulin hyperpolarized and leptin depolarized POMC neurons.
2456 15841180 We generated mice lacking Irs2 in beta cells and a population of hypothalamic neurons (RIPCreIrs2KO), in all neurons (NesCreIrs2KO), and in proopiomelanocortin neurons (POMCCreIrs2KO) to determine the role of Irs2 in the CNS and beta cell.
2457 15841180 RIPCreIrs2KO and NesCreIrs2KO mice retained leptin sensitivity, which suggests that CNS Irs2 pathways are not required for leptin action.
2458 15841180 RIPCre neurons did not express POMC or neuropeptide Y.
2459 15841180 Insulin and a melanocortin agonist depolarized RIPCre neurons, whereas leptin was ineffective.
2460 15841180 Insulin hyperpolarized and leptin depolarized POMC neurons.
2461 15870911 Urocortin, a recently identified member of the corticotropin-releasing factor (CRF) family, is implicated in the central control of appetite and energy metabolism.
2462 15870911 Urocortin decreased food intake and body weight gain more potently than CRF.
2463 15926921 Hypothalamic anorexigenic [corticotropin-releasing factor (CRF) and proopiomelanocortin] peptides decrease and the orexigen, neuropeptide Y, increases with diabetic hyperphagia.
2464 16081264 Plasma was analyzed for glucose, triglycerides, parameters of renal function and peptide hormones -- insulin, leptin, glucagon and ACTH -- that are involved in glucose and lipid metabolism.
2465 16081264 Isoflavones had significant effect on plasma insulin, leptin and glucagon in lean rats but not in obese rats.
2466 16157982 The patient showed exaggerated adrenocorticotropic hormone responsiveness as determined by a corticotrophin releasing hormone test and elevated serum leptin concentrations associated with ravenous appetite and insulin resistance mediated in part through disturbances in leptin signaling.
2467 16181081 Low levels of neuropeptide Y, somatostatin and corticotropin-releasing factor, described in Alzheimer disease (AD), were related to a defect in proteolytic processing of their protein precursors.
2468 16195775 Small-cell lung cancer presenting with a combination of cranial diabetes insipidus and Cushing's syndrome secondary to ectopic adrenocorticotropin (ACTH) secretion is very rare and has only been described previously in one case report Our patient was a 49 year old man, in whom the initial presenting features of small-cell lung cancer were cranial diabetes insipidus secondary to pituitary metastases and severe hypokalaemia resulting from ectopic ACTH hormone secretion.
2469 16202863 Her plasma ACTH levels were also elevated (>300 pg/mL) and irresponsive to corticotropin-releasing hormone (CRH) or metyrapone administration.
2470 16202863 Subsequent histologic evaluation of the transected paranglioma tissue revealed ACTH, synaptin, and chromogranin-A histologically immunostaining.
2471 16202863 Her plasma ACTH levels were also elevated (>300 pg/mL) and irresponsive to corticotropin-releasing hormone (CRH) or metyrapone administration.
2472 16202863 Subsequent histologic evaluation of the transected paranglioma tissue revealed ACTH, synaptin, and chromogranin-A histologically immunostaining.
2473 16203117 Injection of myricetin three times daily for three consecutive days resulted in increased expression of the glucose transporter subtype 4 (GLUT 4) in soleus muscle and in reduced expression of phosphoenolpyruvate carboxykinase (PEPCK) in liver; these inductions were preventable by opioid mu-receptor blockade.
2474 16203117 Findings support the conclusion that the plasma glucose-lowering action of myricetin in insulin-deficient animals is mediated by activation of opioid mu-receptors of peripheral tissues in response to increased beta-endorphin secretion.
2475 16203117 Opioid mu-receptor activation is held responsible for the enhancement of muscle GLUT 4 gene expression and the attenuation of hepatic PEPCK gene expression observed in these myricetin-treated diabetic animals.
2476 16210367 Differential effects of central leptin, insulin, or glucose administration during fasting on the hypothalamic-pituitary-thyroid axis and feeding-related neurons in the arcuate nucleus.
2477 16210367 The reductions in circulating levels of leptin, insulin, and glucose with fasting serve as important homeostasis signals to neurons of the hypothalamic arcuate nucleus that synthesize neuropeptide Y (NPY)/agouti-related protein (AGRP) and alpha-MSH/cocaine and amphetamine-regulated transcript.
2478 16210367 Because the central administration of leptin is capable of preventing the inhibitory effects of fasting on TRH mRNA in hypophysiotropic neurons primarily through effects on the arcuate nucleus, we determined whether the continuous administration of 30 mU/d insulin or 648 microg/d glucose into the cerebrospinal fluid by osmotic minipump might also have similar effects on the hypothalamic-pituitary-thyroid axis.
2479 16210367 As anticipated, the intracerebroventricular infusion of leptin reduced fasting-induced elevations in NPY and AGRP mRNA and increased proopiomelanocortin and cocaine and amphetamine-regulated transcript mRNA in the arcuate nucleus.
2480 16210367 In contrast, whereas insulin increased proopiomelanocortin mRNA and both insulin and glucose reduced NPY mRNA in arcuate nucleus neurons, neither prevented the fasting-induced suppression in hypophysiotropic TRH mRNA or circulating thyroid hormone levels.
2481 16210367 We conclude that insulin and glucose only partially replicate the central effects of leptin and may not be essential components of the hypothalamic-pituitary-thyroid regulatory system during fasting.
2482 16210367 Differential effects of central leptin, insulin, or glucose administration during fasting on the hypothalamic-pituitary-thyroid axis and feeding-related neurons in the arcuate nucleus.
2483 16210367 The reductions in circulating levels of leptin, insulin, and glucose with fasting serve as important homeostasis signals to neurons of the hypothalamic arcuate nucleus that synthesize neuropeptide Y (NPY)/agouti-related protein (AGRP) and alpha-MSH/cocaine and amphetamine-regulated transcript.
2484 16210367 Because the central administration of leptin is capable of preventing the inhibitory effects of fasting on TRH mRNA in hypophysiotropic neurons primarily through effects on the arcuate nucleus, we determined whether the continuous administration of 30 mU/d insulin or 648 microg/d glucose into the cerebrospinal fluid by osmotic minipump might also have similar effects on the hypothalamic-pituitary-thyroid axis.
2485 16210367 As anticipated, the intracerebroventricular infusion of leptin reduced fasting-induced elevations in NPY and AGRP mRNA and increased proopiomelanocortin and cocaine and amphetamine-regulated transcript mRNA in the arcuate nucleus.
2486 16210367 In contrast, whereas insulin increased proopiomelanocortin mRNA and both insulin and glucose reduced NPY mRNA in arcuate nucleus neurons, neither prevented the fasting-induced suppression in hypophysiotropic TRH mRNA or circulating thyroid hormone levels.
2487 16210367 We conclude that insulin and glucose only partially replicate the central effects of leptin and may not be essential components of the hypothalamic-pituitary-thyroid regulatory system during fasting.
2488 16210367 Differential effects of central leptin, insulin, or glucose administration during fasting on the hypothalamic-pituitary-thyroid axis and feeding-related neurons in the arcuate nucleus.
2489 16210367 The reductions in circulating levels of leptin, insulin, and glucose with fasting serve as important homeostasis signals to neurons of the hypothalamic arcuate nucleus that synthesize neuropeptide Y (NPY)/agouti-related protein (AGRP) and alpha-MSH/cocaine and amphetamine-regulated transcript.
2490 16210367 Because the central administration of leptin is capable of preventing the inhibitory effects of fasting on TRH mRNA in hypophysiotropic neurons primarily through effects on the arcuate nucleus, we determined whether the continuous administration of 30 mU/d insulin or 648 microg/d glucose into the cerebrospinal fluid by osmotic minipump might also have similar effects on the hypothalamic-pituitary-thyroid axis.
2491 16210367 As anticipated, the intracerebroventricular infusion of leptin reduced fasting-induced elevations in NPY and AGRP mRNA and increased proopiomelanocortin and cocaine and amphetamine-regulated transcript mRNA in the arcuate nucleus.
2492 16210367 In contrast, whereas insulin increased proopiomelanocortin mRNA and both insulin and glucose reduced NPY mRNA in arcuate nucleus neurons, neither prevented the fasting-induced suppression in hypophysiotropic TRH mRNA or circulating thyroid hormone levels.
2493 16210367 We conclude that insulin and glucose only partially replicate the central effects of leptin and may not be essential components of the hypothalamic-pituitary-thyroid regulatory system during fasting.
2494 16250324 Several research centers carried out collaborative studies of the nucleotide sequences of human and animal proopiomelanocortin (lipotropin precursor) and prolactin cDNA.
2495 16250324 Researchers constructed genetic engineering producers of human pre-proinsulin and somatostatin, identified structural genes expressed in pancreatic beta-cells, studied antigenic properties of glutamic acid decarboxylase (GAD), which determine insulin-dependent diabetes, and identified the cholesterase determinant.
2496 16250324 They revealed mutations in the genes of proopiomelanocortin and melanocortin receptors (MC4-P), which inhibit leptin regulation of appetite and are associated with human obesity.
2497 16250324 Several research centers carried out collaborative studies of the nucleotide sequences of human and animal proopiomelanocortin (lipotropin precursor) and prolactin cDNA.
2498 16250324 Researchers constructed genetic engineering producers of human pre-proinsulin and somatostatin, identified structural genes expressed in pancreatic beta-cells, studied antigenic properties of glutamic acid decarboxylase (GAD), which determine insulin-dependent diabetes, and identified the cholesterase determinant.
2499 16250324 They revealed mutations in the genes of proopiomelanocortin and melanocortin receptors (MC4-P), which inhibit leptin regulation of appetite and are associated with human obesity.
2500 16284652 We have generated mice that carry a neuron-specific leptin receptor (LEPR) transgene whose expression is driven by the rat synapsin I promoter synapsin-LEPR B (SYN-LEPR-B).
2501 16284652 We also show complete correction of the obesity and related phenotypes of db/db mice that are hemizygous for both NSE-LEPR-B and SYN-LEPR-B transgenes (Nse+Syn db/db).
2502 16284652 Body composition, insulin sensitivity, and cold tolerance were completely normalized in Nse+Syn db/db mice at 12 weeks of age compared with lean controls.
2503 16284652 In situ hybridization for LEPR B isoform expression in Nse+Syn db/db mice showed robust expression in the energy homeostasis-relevant regions of the hypothalamus.
2504 16284652 Expression of 3 neuropeptide genes, agouti-related peptide (Agrp), neuropeptide Y (Npy), and proopiomelanocortin (Pomc), was fully normalized in dual transgenic db/db mice.
2505 16310285 The melanocortin signaling system is orchestrated by two, independent groups of neurons in the hypothalamic arcuate nucleus with opposing functions that synthesize either alpha-melanocyte stimulating hormone (alpha-MSH) or agouti-related protein (AGRP).
2506 16310285 Alpha-MSH has an activating effect on hypophysiotropic TRH neurons via the phosphorylation of CREB, and when administered exogenously, can completely reverse fasting-induced suppression of TRH mRNA in the PVN.
2507 16310285 Inhibition of the HPT axis by fasting may be explained by inhibition of melanocortin signaling as a result of a reduction in alpha-MSH and increase in AGRP.
2508 16310285 Neuropeptide Y may also modulate the effects of the melanocortin signaling system during fasting by potentiating the inhibitory actions of AGRP on hypophysiotropic TRH neurons to prevent the phosphorylation of CREB and through direct inhibitory effects on alpha-MSH-producing neurons in the arcuate nucleus.
2509 16310285 The melanocortin signaling system is orchestrated by two, independent groups of neurons in the hypothalamic arcuate nucleus with opposing functions that synthesize either alpha-melanocyte stimulating hormone (alpha-MSH) or agouti-related protein (AGRP).
2510 16310285 Alpha-MSH has an activating effect on hypophysiotropic TRH neurons via the phosphorylation of CREB, and when administered exogenously, can completely reverse fasting-induced suppression of TRH mRNA in the PVN.
2511 16310285 Inhibition of the HPT axis by fasting may be explained by inhibition of melanocortin signaling as a result of a reduction in alpha-MSH and increase in AGRP.
2512 16310285 Neuropeptide Y may also modulate the effects of the melanocortin signaling system during fasting by potentiating the inhibitory actions of AGRP on hypophysiotropic TRH neurons to prevent the phosphorylation of CREB and through direct inhibitory effects on alpha-MSH-producing neurons in the arcuate nucleus.
2513 16310285 The melanocortin signaling system is orchestrated by two, independent groups of neurons in the hypothalamic arcuate nucleus with opposing functions that synthesize either alpha-melanocyte stimulating hormone (alpha-MSH) or agouti-related protein (AGRP).
2514 16310285 Alpha-MSH has an activating effect on hypophysiotropic TRH neurons via the phosphorylation of CREB, and when administered exogenously, can completely reverse fasting-induced suppression of TRH mRNA in the PVN.
2515 16310285 Inhibition of the HPT axis by fasting may be explained by inhibition of melanocortin signaling as a result of a reduction in alpha-MSH and increase in AGRP.
2516 16310285 Neuropeptide Y may also modulate the effects of the melanocortin signaling system during fasting by potentiating the inhibitory actions of AGRP on hypophysiotropic TRH neurons to prevent the phosphorylation of CREB and through direct inhibitory effects on alpha-MSH-producing neurons in the arcuate nucleus.
2517 16310285 The melanocortin signaling system is orchestrated by two, independent groups of neurons in the hypothalamic arcuate nucleus with opposing functions that synthesize either alpha-melanocyte stimulating hormone (alpha-MSH) or agouti-related protein (AGRP).
2518 16310285 Alpha-MSH has an activating effect on hypophysiotropic TRH neurons via the phosphorylation of CREB, and when administered exogenously, can completely reverse fasting-induced suppression of TRH mRNA in the PVN.
2519 16310285 Inhibition of the HPT axis by fasting may be explained by inhibition of melanocortin signaling as a result of a reduction in alpha-MSH and increase in AGRP.
2520 16310285 Neuropeptide Y may also modulate the effects of the melanocortin signaling system during fasting by potentiating the inhibitory actions of AGRP on hypophysiotropic TRH neurons to prevent the phosphorylation of CREB and through direct inhibitory effects on alpha-MSH-producing neurons in the arcuate nucleus.
2521 16320160 Alpha melanocyte-stimulating hormone (alpha-MSH) is an agonist at the melanocortin 3 (MC3-R) and melanocortin 4 (MC4-R) receptors.
2522 16320160 Agouti related protein (AgRP) is an endogenous antagonist at the MC3-R and MC4-R and is expressed in the rat adrenal cortex.
2523 16320160 AgRP antagonises alpha-MSH-induced corticosterone release from rat and bovine adrenal cells.
2524 16320160 Alpha melanocyte-stimulating hormone (alpha-MSH) is an agonist at the melanocortin 3 (MC3-R) and melanocortin 4 (MC4-R) receptors.
2525 16320160 Agouti related protein (AgRP) is an endogenous antagonist at the MC3-R and MC4-R and is expressed in the rat adrenal cortex.
2526 16320160 AgRP antagonises alpha-MSH-induced corticosterone release from rat and bovine adrenal cells.
2527 16353609 Studies in our laboratory and elsewhere have demonstrated numerous abnormalities of steroid and polypeptide hormone secretion in obesity: hyperestrogenemia and hypogonadotropic hypogonadism in obese men; diminished SHBG levels in both sexes; elevated free testosterone and free estradiol in obese women; PCOS-like gonadotropin and sex-hormone abnormalities in obese women; elevated serum insulin in both sexes; blunted stimulability of prolactin, growth hormone, and vasopressin in both sexes; and elevated basal levels and blunted stimulability and suppressibility of beta-endorphin in both sexes.
2528 16390921 Low estriol levels in the maternal triple-marker screen as a predictor of isolated adrenocorticotropic hormone deficiency caused by a new mutation in the TPIT gene.
2529 16390921 There are also occasional reports of prenatal diagnosis of IAD by findings on the maternal triple-marker screen (TMST), a combined serum analyte test that measures levels of alpha-fetoprotein, human chorionic gonadotropin, and unconjugated estriol for the detection of Down syndrome and open neural-tube defects.
2530 16390921 A low estriol level in the context of normal fetal sonography and growth, after exclusion of placental sulfatase deficiency and Smith-Lemli-Opitz syndrome, should raise the suspicion of deficient fetal steroidogenesis, which leads to decreased production of adrenal dehydroepiandrosterone sulfate.
2531 16390921 Normal levels of steroid sulfatase activity and 7-dehydrocholesterol ruled out X-linked ichthyosis and Smith-Lemli-Opitz syndrome, respectively.
2532 16396514 The ligand of primary interest for treatment of insulin resistance is alpha-melanocyte-stimulating hormone (alpha-MSH), which is derived, as are all melanocortins, from tissue-specific post-translational proteolytic processing of the pro-opiomelanocortin (POMC) precursor protein.
2533 16396514 Recent results have shown that alpha-MSH is the complement of leptin in the endocrine circuit, regulating bodyweight, food intake, and metabolic rate. alpha-MSH can decrease bodyweight, weight gain, and food intake in mice with diet-induced and genetic obesity.
2534 16396514 For instance, the POMC null mouse is extremely sensitive to insulin in an insulin tolerance test, while being otherwise euglycemic.
2535 16396514 The results from rodent studies with alpha-MSH suggest reciprocal effects: alpha-MSH appears to increase sensitivity to insulin when present in the CNS, while alpha-MSH in the periphery is necessary for insulin resistance.
2536 16396514 The ligand of primary interest for treatment of insulin resistance is alpha-melanocyte-stimulating hormone (alpha-MSH), which is derived, as are all melanocortins, from tissue-specific post-translational proteolytic processing of the pro-opiomelanocortin (POMC) precursor protein.
2537 16396514 Recent results have shown that alpha-MSH is the complement of leptin in the endocrine circuit, regulating bodyweight, food intake, and metabolic rate. alpha-MSH can decrease bodyweight, weight gain, and food intake in mice with diet-induced and genetic obesity.
2538 16396514 For instance, the POMC null mouse is extremely sensitive to insulin in an insulin tolerance test, while being otherwise euglycemic.
2539 16396514 The results from rodent studies with alpha-MSH suggest reciprocal effects: alpha-MSH appears to increase sensitivity to insulin when present in the CNS, while alpha-MSH in the periphery is necessary for insulin resistance.
2540 16396514 The ligand of primary interest for treatment of insulin resistance is alpha-melanocyte-stimulating hormone (alpha-MSH), which is derived, as are all melanocortins, from tissue-specific post-translational proteolytic processing of the pro-opiomelanocortin (POMC) precursor protein.
2541 16396514 Recent results have shown that alpha-MSH is the complement of leptin in the endocrine circuit, regulating bodyweight, food intake, and metabolic rate. alpha-MSH can decrease bodyweight, weight gain, and food intake in mice with diet-induced and genetic obesity.
2542 16396514 For instance, the POMC null mouse is extremely sensitive to insulin in an insulin tolerance test, while being otherwise euglycemic.
2543 16396514 The results from rodent studies with alpha-MSH suggest reciprocal effects: alpha-MSH appears to increase sensitivity to insulin when present in the CNS, while alpha-MSH in the periphery is necessary for insulin resistance.
2544 16396514 The ligand of primary interest for treatment of insulin resistance is alpha-melanocyte-stimulating hormone (alpha-MSH), which is derived, as are all melanocortins, from tissue-specific post-translational proteolytic processing of the pro-opiomelanocortin (POMC) precursor protein.
2545 16396514 Recent results have shown that alpha-MSH is the complement of leptin in the endocrine circuit, regulating bodyweight, food intake, and metabolic rate. alpha-MSH can decrease bodyweight, weight gain, and food intake in mice with diet-induced and genetic obesity.
2546 16396514 For instance, the POMC null mouse is extremely sensitive to insulin in an insulin tolerance test, while being otherwise euglycemic.
2547 16396514 The results from rodent studies with alpha-MSH suggest reciprocal effects: alpha-MSH appears to increase sensitivity to insulin when present in the CNS, while alpha-MSH in the periphery is necessary for insulin resistance.
2548 16430857 Brain serotonin (5-hydroxytryptamine; 5-HT) systems contribute to regulate eating behavior and energy homeostasis. 5-HT2C receptors and 5-HT1B receptors have been shown to mediate anorexic effects of 5-HT drugs such as d-fenfluramine, which stimulates 5-HT release and inhibits 5-HT reuptake, and m-chlorophenylpiperazine (mCPP), a 5-HT2C receptor agonist.
2549 16430857 Here, we report that 24-h fasting increased the expression of hypothalamic 5-HT2C receptor and 5-HT1B receptor genes in association with increases in plasma active ghrelin levels compared with fed state in mice.
2550 16430857 Treatment with mCPP or fenfluramine significantly inhibited the increases in plasma active ghrelin levels. mCPP or fenfluramine significantly increased the expression of hypothalamic pro-opiomelanocortin and cocaine- and amphetamine-regulated transcript genes while having no significant effects on the expression of hypothalamic neuropeptide Y, agouti- related protein, and ghrelin genes.
2551 16430857 These results suggest that there is a negative feedback system between brain 5-HT systems and plasma active ghrelin levels in energy homeostasis in mice.
2552 16437012 Serum Growth hormone binding protein (GHBP), insulin growth factor I (IGF-I) and IGF binding protein (IGFBP) - 3 levels are all significantly decreased in patients with AN and return to normal with refeeding.
2553 16437012 IGFBP-1 and 2 are increased and return also to normal with weight gain.
2554 16437012 Corticotropin (ACTH) levels are normal with decreased response to Corticotropin releasing hormone (CRH).
2555 16437012 Finally leptin levels are decreased in patients with AN while ghrelin levels are elevated.
2556 16437012 Both leptin and ghrelin levels return to control values after renutrition.
2557 16450289 In conclusion, our results suggest that ginsenoside Rh2 may lower plasma glucose in STZ-diabetic rats based on an increase in beta-endorphin secretion that activates opioid mu-receptors thereby resulting in an increased expression of GLUT 4.
2558 16475950 In the hypothalamus, restorative gene therapy has been successfully implemented in Brattleboro rats, an arginine vasopressin (AVP) mutant which suffers from diabetes insipidus, in Koletsky (fa(k)/fa(k)) and in Zucker (fa/fa) rats which have leptin receptor mutations that render them obese, hyperphagic and hyperinsulinemic.
2559 16475950 In the above models, viral vectors expressing AVP, leptin receptor b and proopiomelanocortin, respectively were stereotaxically injected in the relevant hypothalamic regions.
2560 16475950 Stereotaxic injection of an adenoviral vector expressing Insulin-like Growth Factor-I (IGF-I) was able to correct their chronic hyperprolactinemia and restore tuberoinfundibular dopaminergic (TIDA) neuron numbers.
2561 16480676 Primary aldosteronism, congenital adrenal hyperplasia, Cushing's syndrome, glucocorticoid-remediable aldosteronism, and corticotropin-dependent forms of adrenal pathology can cause hypertension by excessive production of adrenocortical hormones.
2562 16484325 To investigate the role of ghrelin in the hyperphagia associated with uncontrolled streptozotocin-induced diabetes, food intake was followed in diabetic ghrelin knockout (ghrelin(-/-)) and control wild-type (ghrelin(+/+)) mice and diabetic Naval Medical Research Institute noninbred Swiss mice treated with either saline or the ghrelin receptor antagonist, D-Lys3-GH-releasing peptide-6 (D-Lys3-GHRP-6) for 5 d.
2563 16484325 In diabetic ghrelin(+/+) mice, but not in ghrelin(-/-) mice, the number of neuropeptide Y (NPY)-immunoreactive neurons was significantly increased.
2564 16484325 The change in the number of NPY- (2.4-fold increase) and alpha-MSH (1.7-fold decrease)-immunoreactive hypothalamic neurons induced by diabetes was normalized by D-Lys3-GHRP-6 treatment.
2565 16484325 Our results suggest that enhanced NPY and reduced alpha-MSH expression are secondary to the release of ghrelin, which should be considered the underlying trigger of hyperphagia associated with uncontrolled diabetes.
2566 16484325 To investigate the role of ghrelin in the hyperphagia associated with uncontrolled streptozotocin-induced diabetes, food intake was followed in diabetic ghrelin knockout (ghrelin(-/-)) and control wild-type (ghrelin(+/+)) mice and diabetic Naval Medical Research Institute noninbred Swiss mice treated with either saline or the ghrelin receptor antagonist, D-Lys3-GH-releasing peptide-6 (D-Lys3-GHRP-6) for 5 d.
2567 16484325 In diabetic ghrelin(+/+) mice, but not in ghrelin(-/-) mice, the number of neuropeptide Y (NPY)-immunoreactive neurons was significantly increased.
2568 16484325 The change in the number of NPY- (2.4-fold increase) and alpha-MSH (1.7-fold decrease)-immunoreactive hypothalamic neurons induced by diabetes was normalized by D-Lys3-GHRP-6 treatment.
2569 16484325 Our results suggest that enhanced NPY and reduced alpha-MSH expression are secondary to the release of ghrelin, which should be considered the underlying trigger of hyperphagia associated with uncontrolled diabetes.
2570 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2571 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2572 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2573 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2574 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2575 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2576 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2577 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2578 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2579 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2580 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2581 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2582 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2583 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2584 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2585 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2586 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2587 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2588 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2589 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2590 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2591 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2592 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2593 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2594 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2595 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2596 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2597 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2598 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2599 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2600 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2601 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2602 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2603 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2604 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2605 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2606 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2607 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2608 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2609 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2610 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2611 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2612 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2613 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2614 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2615 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2616 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2617 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2618 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2619 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2620 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2621 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2622 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2623 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2624 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2625 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2626 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2627 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2628 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2629 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2630 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2631 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2632 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2633 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2634 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2635 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2636 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2637 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2638 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2639 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2640 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2641 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2642 16505217 Divergent regulation of proopiomelanocortin neurons by leptin in the nucleus of the solitary tract and in the arcuate hypothalamic nucleus.
2643 16505217 Proopiomelanocortin (POMC) neurons in the arcuate nucleus (ARC) of the hypothalamus are activated by leptin and mediate part of leptin's central actions to influence energy balance.
2644 16505217 However, little is known about potential leptin signaling in POMC neurons located in the nucleus of the solitary tract (NTS), the only other known population of POMC neurons.
2645 16505217 The contribution of NTS POMC neurons versus ARC POMC neurons in leptin action is thus undetermined.
2646 16505217 We show here that in contrast to POMC neurons in the ARC, leptin does not stimulate phosphorylation of signal-transducer and activator of transcription 3 in NTS POMC neurons of POMC-EGFP reporter mice.
2647 16505217 In addition, leptin does not induce c-Fos expression in NTS POMC neurons unlike ARC POMC neurons.
2648 16505217 Fasting induces a fall in POMC mRNA in both the ARC and the NTS, but different from the ARC, the reduction in NTS POMC mRNA is not reversed by leptin.
2649 16505217 We conclude that POMC neurons in the NTS do not respond to leptin unlike ARC POMC neurons.
2650 16505217 POMC neurons in the hypothalamus may therefore mediate all of leptin's signaling via POMC-derived peptides in the central nervous system.
2651 16505249 In conclusion, our results provide novel mechanisms for the plasma glucose-lowering action of metformin, via an increase of beta-endorphin secretion from adrenal glands to stimulate opioid mu-receptor linkage, leading to an increase of GLUT-4 gene expression and an attenuation of hepatic PEPCK gene expression in STZ-induced diabetic rats.
2652 16523411 Metformin increases insulin sensitivity and plasma beta-endorphin in human subjects.
2653 16523411 Fasting plasma glucose, A1C, HOMA-IR for insulin resistance, lipid profile, and plasma beta-endorphin-like immunoreactivity (BER) were measured before treatment and weekly at the end of each dosing period.
2654 16523411 In conclusion, metformin causes a significant parallel increase in insulin sensitivity and plasma beta-endorphin level in human subjects.
2655 16523411 Metformin increases insulin sensitivity and plasma beta-endorphin in human subjects.
2656 16523411 Fasting plasma glucose, A1C, HOMA-IR for insulin resistance, lipid profile, and plasma beta-endorphin-like immunoreactivity (BER) were measured before treatment and weekly at the end of each dosing period.
2657 16523411 In conclusion, metformin causes a significant parallel increase in insulin sensitivity and plasma beta-endorphin level in human subjects.
2658 16523411 Metformin increases insulin sensitivity and plasma beta-endorphin in human subjects.
2659 16523411 Fasting plasma glucose, A1C, HOMA-IR for insulin resistance, lipid profile, and plasma beta-endorphin-like immunoreactivity (BER) were measured before treatment and weekly at the end of each dosing period.
2660 16523411 In conclusion, metformin causes a significant parallel increase in insulin sensitivity and plasma beta-endorphin level in human subjects.
2661 16611215 The Melanocortin-4 Receptor is stimulated by endogenous melanocortin agonists derived from the pro-opiomelanocortin gene transcript and antagonized by the endogenous antagonist agouti-related protein.
2662 16644867 However, Pc1 knockout mice do not become obese; in fact, they are runted due to a defect in growth-hormone releasing hormone processing, leading to the speculation that PC1 subserves different functions between mouse and human.
2663 16644867 Here, we report a novel allele of mouse Pc1 (N222D) that leads to obesity, abnormal proinsulin processing and multiple endocrinological defects.
2664 16644867 The obesity is associated with impaired autocatalytic activation of mature PC1 and reduced hypothalamic alpha-MSH.
2665 16721033 The data support the assertion of a direct action of CRH on human adrenocortical cells in addition to an intra-adrenal CRH receptor/adrenocorticotropin system.
2666 16794802 Cushing's syndrome caused by adrenocorticotropic hormone (ACTH)-independent macronodular adrenal hyperplasia (AIMAH) is an extremely rare disease, which shows bilateral macronodular adrenal hypertrophy and autonomous cortisol production.
2667 16809929 In the hypothalamus, restorative gene therapy has been successfully implemented in Brattleboro rats, an arginine vasopressin (AVP) mutant which suffers from diabetes insipidus, and in Koletsky (fa(k)/fa(k)) and in Zucker (fa/fa) rats which have leptin receptor mutations that render them obese, hyperphagic and hyperinsulinemic.
2668 16809929 In the above models, viral vectors expressing AVP, leptin receptor b and proopiomelanocortin, respectively, were stereotaxically injected in the relevant hypothalamic regions.
2669 16809929 Stereotaxic injection of an adenoviral vector expressing insulin-like growth factor I corrected their chronic hyperprolactinemia and restored TIDA neuron numbers.
2670 16825606 Evidence that endogenous SST inhibits ACTH and ghrelin expression by independent pathways.
2671 16825606 Corticosterone and total ghrelin levels are increased in somatostatin (SST) knockout mice (Sst-/-) compared with SST-intact controls (Sst+/+).
2672 16825606 We report that Sst-/- mice had elevated mRNA levels for pituitary proopiomelanocortin (POMC), the precursor of adrenocorticotropic hormone (ACTH), whereas mRNA levels for hypothalamic corticotropin-releasing hormone (CRH) did not differ from Sst+/+ mice.
2673 16825606 Furthermore, SST suppressed pituitary POMC mRNA levels and ACTH release in vitro independently of CRH actions.
2674 16825606 In contrast, it has been reported that ghrelin increases glucocorticoids via a central effect on CRH secretion and that n-octanoyl ghrelin is the form of ghrelin that activates the GHS-R1a and modulates CRH neuronal activity.
2675 16825606 Because glucocorticoids and ghrelin increase in response to fasting, we examined the impact of fasting on the adrenal axis and ghrelin in Sst+/+ and Sst-/- mice and found that endogenous SST does not significantly contribute to this adaptive response.
2676 16825606 We conclude that endogenous SST inhibits basal ghrelin gene expression in a tissue specific manner and independently and directly inhibits pituitary ACTH synthesis and release.
2677 16825606 Thus endogenous SST exerts an inhibitory effect on ghrelin synthesis and on the adrenal axis through independent pathways.
2678 16825606 Evidence that endogenous SST inhibits ACTH and ghrelin expression by independent pathways.
2679 16825606 Corticosterone and total ghrelin levels are increased in somatostatin (SST) knockout mice (Sst-/-) compared with SST-intact controls (Sst+/+).
2680 16825606 We report that Sst-/- mice had elevated mRNA levels for pituitary proopiomelanocortin (POMC), the precursor of adrenocorticotropic hormone (ACTH), whereas mRNA levels for hypothalamic corticotropin-releasing hormone (CRH) did not differ from Sst+/+ mice.
2681 16825606 Furthermore, SST suppressed pituitary POMC mRNA levels and ACTH release in vitro independently of CRH actions.
2682 16825606 In contrast, it has been reported that ghrelin increases glucocorticoids via a central effect on CRH secretion and that n-octanoyl ghrelin is the form of ghrelin that activates the GHS-R1a and modulates CRH neuronal activity.
2683 16825606 Because glucocorticoids and ghrelin increase in response to fasting, we examined the impact of fasting on the adrenal axis and ghrelin in Sst+/+ and Sst-/- mice and found that endogenous SST does not significantly contribute to this adaptive response.
2684 16825606 We conclude that endogenous SST inhibits basal ghrelin gene expression in a tissue specific manner and independently and directly inhibits pituitary ACTH synthesis and release.
2685 16825606 Thus endogenous SST exerts an inhibitory effect on ghrelin synthesis and on the adrenal axis through independent pathways.
2686 16825606 Evidence that endogenous SST inhibits ACTH and ghrelin expression by independent pathways.
2687 16825606 Corticosterone and total ghrelin levels are increased in somatostatin (SST) knockout mice (Sst-/-) compared with SST-intact controls (Sst+/+).
2688 16825606 We report that Sst-/- mice had elevated mRNA levels for pituitary proopiomelanocortin (POMC), the precursor of adrenocorticotropic hormone (ACTH), whereas mRNA levels for hypothalamic corticotropin-releasing hormone (CRH) did not differ from Sst+/+ mice.
2689 16825606 Furthermore, SST suppressed pituitary POMC mRNA levels and ACTH release in vitro independently of CRH actions.
2690 16825606 In contrast, it has been reported that ghrelin increases glucocorticoids via a central effect on CRH secretion and that n-octanoyl ghrelin is the form of ghrelin that activates the GHS-R1a and modulates CRH neuronal activity.
2691 16825606 Because glucocorticoids and ghrelin increase in response to fasting, we examined the impact of fasting on the adrenal axis and ghrelin in Sst+/+ and Sst-/- mice and found that endogenous SST does not significantly contribute to this adaptive response.
2692 16825606 We conclude that endogenous SST inhibits basal ghrelin gene expression in a tissue specific manner and independently and directly inhibits pituitary ACTH synthesis and release.
2693 16825606 Thus endogenous SST exerts an inhibitory effect on ghrelin synthesis and on the adrenal axis through independent pathways.
2694 16825606 Evidence that endogenous SST inhibits ACTH and ghrelin expression by independent pathways.
2695 16825606 Corticosterone and total ghrelin levels are increased in somatostatin (SST) knockout mice (Sst-/-) compared with SST-intact controls (Sst+/+).
2696 16825606 We report that Sst-/- mice had elevated mRNA levels for pituitary proopiomelanocortin (POMC), the precursor of adrenocorticotropic hormone (ACTH), whereas mRNA levels for hypothalamic corticotropin-releasing hormone (CRH) did not differ from Sst+/+ mice.
2697 16825606 Furthermore, SST suppressed pituitary POMC mRNA levels and ACTH release in vitro independently of CRH actions.
2698 16825606 In contrast, it has been reported that ghrelin increases glucocorticoids via a central effect on CRH secretion and that n-octanoyl ghrelin is the form of ghrelin that activates the GHS-R1a and modulates CRH neuronal activity.
2699 16825606 Because glucocorticoids and ghrelin increase in response to fasting, we examined the impact of fasting on the adrenal axis and ghrelin in Sst+/+ and Sst-/- mice and found that endogenous SST does not significantly contribute to this adaptive response.
2700 16825606 We conclude that endogenous SST inhibits basal ghrelin gene expression in a tissue specific manner and independently and directly inhibits pituitary ACTH synthesis and release.
2701 16825606 Thus endogenous SST exerts an inhibitory effect on ghrelin synthesis and on the adrenal axis through independent pathways.
2702 16846990 Immunohistochemical staining for follicle-stimulating hormone, luteinizing hormone, prolactin, human growth hormone, thyroid-stimulating hormone, and adrenocorticotropic hormone was applied to pituitary tissue from all cases.
2703 16868891 To address this issue, we determine the prevalence of neuroendocrine abnormalities in patients rehabilitating from severe traumatic brain injury (Glasgow Coma Scale < or = 8). 76 patients (mean age 39 +/- 14 yr; range 18-65; 53 males and 23 females; BMI 25.8 +/- 4.2 kg/m2; mean +/- SD) with a severe traumatic brain injury, an average of 22 +/- 10 months before this study (median, 20 months), underwent a series of standard endocrine tests, including TSH, free T4, T4, T3, prolactin, testosterone (males), estradiol (females), cortisol, ACTH, GH, and IGF-I.
2704 16868891 Pituitary deficiency was shown in 24% of the patients (18/76). 8% (n = 6) had GHD (GH-peak range [GHRH + arginine]: 2.8-6.3 microg/L; GH-peak range [ITT]: 1.5-2.2 microg/L; IGF-I range: 62-174 microg/L). 17% (n = 13) had hypogonadism (total testosterone < 9.5 nmol/L and low gonadotropins in 12 males; low estradiol, and low gonadotropins in 1 female).
2705 16876574 Adipose tissue secretes leptin, steroid hormones, adiponectin, inflammatory cytokines, resistin, complement factors, and vasoactive peptides.
2706 16876574 Leptin activates Janus-activating kinase2 (Jak2) and STAT 3, resulting in stimulation of anorexigenic peptides, e.g., alpha-MSH and CART, and inhibition of orexigenic peptides, e.g., NPY and AGRP.
2707 16876574 Leptin also stimulates fatty acid oxidation, insulin release, and peripheral insulin action.
2708 16876574 These effects involve regulation of PI-3 kinase, PTP-1B, suppressor of cytokine signaling-3 (SOCS-3), and AMP-activated protein kinase in the brain and peripheral organs.
2709 16876574 There is emerging evidence that leptin, adiponectin, and resistin act through overlapping pathways.
2710 16876577 Hypophysiotropic TRH neurons are located in the medial and periventricular parvocellular subdivisions of the PVN and receive direct monosynaptic projections from two, separate, populations of leptin-responsive neurons in the hypothalamic arcuate nucleus containing either alpha-melanocyte-stimulating hormone (alpha-MSH) and cocaine- and amphetamine-regulated transcript (CART), peptides that promote weight loss and increase energy expenditure, or neuropeptide Y (NPY) and agouti-related protein (AGRP), peptides that promote weight gain and reduce energy expenditure.
2711 16876577 During fasting, the reduction in TRH mRNA in hypophysiotropic neurons mediated by suppression of alpha-MSH/CART simultaneously with an increase in NPY/AGRP gene expression in arcuate nucleus neurons contributes to the fall in circulating thyroid hormone levels, presumably by increasing the sensitivity of the TRH gene to negative feedback inhibition by thyroid hormone.
2712 16876577 Endotoxin administration, however, has the paradoxical effect of increasing circulating levels of leptin and melanocortin signaling and CART gene expression in arcuate nucleus neurons, but inhibiting TRH gene expression in hypophysiotropic neurons.
2713 16876577 However, evidence that an anatomically separate population of nonhypophysiotropic TRH neurons in the anterior parvocellular subdivision of the PVN is integrated into the leptin regulatory control system by the same arcuate nucleus neuronal populations that innervate hypophysiotropic TRH neurons, raises the possibility that anterior parvocellular TRH neurons may be involved, possibly through interactions with the limbic nervous system.
2714 16876577 Hypophysiotropic TRH neurons are located in the medial and periventricular parvocellular subdivisions of the PVN and receive direct monosynaptic projections from two, separate, populations of leptin-responsive neurons in the hypothalamic arcuate nucleus containing either alpha-melanocyte-stimulating hormone (alpha-MSH) and cocaine- and amphetamine-regulated transcript (CART), peptides that promote weight loss and increase energy expenditure, or neuropeptide Y (NPY) and agouti-related protein (AGRP), peptides that promote weight gain and reduce energy expenditure.
2715 16876577 During fasting, the reduction in TRH mRNA in hypophysiotropic neurons mediated by suppression of alpha-MSH/CART simultaneously with an increase in NPY/AGRP gene expression in arcuate nucleus neurons contributes to the fall in circulating thyroid hormone levels, presumably by increasing the sensitivity of the TRH gene to negative feedback inhibition by thyroid hormone.
2716 16876577 Endotoxin administration, however, has the paradoxical effect of increasing circulating levels of leptin and melanocortin signaling and CART gene expression in arcuate nucleus neurons, but inhibiting TRH gene expression in hypophysiotropic neurons.
2717 16876577 However, evidence that an anatomically separate population of nonhypophysiotropic TRH neurons in the anterior parvocellular subdivision of the PVN is integrated into the leptin regulatory control system by the same arcuate nucleus neuronal populations that innervate hypophysiotropic TRH neurons, raises the possibility that anterior parvocellular TRH neurons may be involved, possibly through interactions with the limbic nervous system.
2718 16926523 Basal plasma levels of GH and insulin-like growth factor-I under fasting hyperglycemia (202 mg/dl) were markedly elevated.
2719 16926523 Plasma GH levels paradoxically increased after stimulation with TRH and LH-RH, and decreased after bromocriptine and octreotide administration.
2720 16926523 The tumor resected by transsphenoidal surgery was histopathologically consistent with the diagnosis of eosinophilic adenoma: positive immunoreactivities of GH, PRL and ACTH were demonstrated, but negative immunoreactivities of prohormone convertase (PC) 1/3 by immunohistochemical method.
2721 16959056 Fluvoxamine, a selective serotonin reuptake inhibitor, and 5-HT2C receptor inactivation induce appetite-suppressing effects in mice via 5-HT1B receptors.
2722 16959056 Moreover, CP 94253 (5-10 mg/kg), a selective 5-HT1B receptor agonist, exerted appetite-suppressing effects and significantly increased hypothalamic pro-opiomelanocortin (POMC) and cocaine- and amphetamine-regulated transcript (CART) gene expression and decreased hypothalamic orexin gene expression.
2723 16959056 These results suggest that fluvoxamine and inactivation of 5-HT2C receptors exert feeding suppression through activation of 5-HT1B receptors, and that 5-HT1B receptors up-regulate hypothalamic POMC and CART gene expression and down-regulate hypothalamic orexin gene expression in mice.
2724 16959056 Fluvoxamine, a selective serotonin reuptake inhibitor, and 5-HT2C receptor inactivation induce appetite-suppressing effects in mice via 5-HT1B receptors.
2725 16959056 Moreover, CP 94253 (5-10 mg/kg), a selective 5-HT1B receptor agonist, exerted appetite-suppressing effects and significantly increased hypothalamic pro-opiomelanocortin (POMC) and cocaine- and amphetamine-regulated transcript (CART) gene expression and decreased hypothalamic orexin gene expression.
2726 16959056 These results suggest that fluvoxamine and inactivation of 5-HT2C receptors exert feeding suppression through activation of 5-HT1B receptors, and that 5-HT1B receptors up-regulate hypothalamic POMC and CART gene expression and down-regulate hypothalamic orexin gene expression in mice.
2727 16965293 Young adult-specific hyperphagia in diabetic Goto-kakizaki rats is associated with leptin resistance and elevation of neuropeptide Y mRNA in the arcuate nucleus.
2728 16965293 In GK rats, leptin-induced phosphorylation of signal transducer and activator of transcription 3 was significantly reduced in the cells of the hypothalamic arcuate nucleus (ARC), but not of the ventromedial hypothalamus, whereas the mRNA level of functional leptin receptor was unaltered.
2729 16965293 By real-time polymerase chain reaction and in situ hybridisation, mRNA levels of neuropeptide Y, but not pro-opiomelanocortin and galanin-like peptide, were significantly increased in the ARC of GK rats at 11 weeks, but not 26 weeks.
2730 16965293 These results demonstrate that young adult GK rats display hyperphagia in association with leptin resistance and increased NPY mRNA level in the ARC.
2731 17008116 The cocaine and amphetamine regulated transcript (CART), an anorexigenic peptide responding to leptin, is expressed in various areas of the hypothalamus.
2732 17008116 Since CART plays an important role in the hypothalamic regulation of energy balance by reducing food intake and increasing lipid substrate utilization, it might affect cholesterol metabolism as Neuropeptide Y or pro-opiomelanocortin do.
2733 17021375 Leptin activates tyrosine kinase, Janus kinase 2, and signal transducer and activator of transcription 3, leading to increased levels of anorexigenic peptides, e.g., alpha-melanocyte stimulating hormone and cocaine- and amphetamine-regulated transcript, and inhibition of orexigenic peptides, e.g., neuropeptide Y and agouti-related peptide.
2734 17021375 Obesity is characterized by hyperleptinemia and hypothalamic leptin resistance, partly caused by induction of suppressor of cytokine signaling-3.
2735 17021375 Leptin also decreases glucose and stimulates lipolysis through central and peripheral pathways involving AMP-activated protein kinase (AMPK).
2736 17021375 Obesity, diabetes, and atherosclerosis have been associated with reduced adiponectin levels, whereas adiponectin treatment reverses these abnormalities partly through activation of AMPK in liver and muscle.
2737 17021375 Administration of adiponectin in the brain recapitulates the peripheral actions to increase fatty acid oxidation and insulin sensitivity and reduce glucose.
2738 17021375 As with leptin, adiponectin requires the central melanocortin pathway.
2739 17021375 Furthermore, adiponectin stimulates fatty acid oxidation and reduces glucose and lipids, at least in part, by activating AMPK in muscle and liver.
2740 17023536 Inactivation of signal transducer and activator of transcription 3 in proopiomelanocortin (Pomc) neurons causes decreased pomc expression, mild obesity, and defects in compensatory refeeding.
2741 17023536 Leptin is an adipocyte-derived hormone that signals body energy status to the brain by acting on multiple neuronal subgroups in the hypothalamus, including those that express proopiomelanocortin (Pomc) and agouti-related protein (Agrp).
2742 17023536 Signal transducer and activator of transcription 3 (Stat3) is an important intracellular signaling molecule activated by leptin, and previous studies have shown that mice carrying a mutated leptin receptor that abolished Stat3 binding are grossly obese.
2743 17023536 To determine the extent to which Stat3 signaling in Pomc neurons was responsible for these effects, we constructed Pomc-specific Stat3 mutants using a Cre recombinase transgene driven by the Pomc promoter.
2744 17023536 We find that Pomc expression is diminished in the mutant mice, suggesting that Stat3 is required for Pomc transcription.
2745 17023536 These results demonstrate a requirement for Stat3 in transcriptional regulation of Pomc but indicate that this circuit is only one of several components that underlie the neuronal response to leptin and the role of Stat3 in that response.
2746 17023536 Inactivation of signal transducer and activator of transcription 3 in proopiomelanocortin (Pomc) neurons causes decreased pomc expression, mild obesity, and defects in compensatory refeeding.
2747 17023536 Leptin is an adipocyte-derived hormone that signals body energy status to the brain by acting on multiple neuronal subgroups in the hypothalamus, including those that express proopiomelanocortin (Pomc) and agouti-related protein (Agrp).
2748 17023536 Signal transducer and activator of transcription 3 (Stat3) is an important intracellular signaling molecule activated by leptin, and previous studies have shown that mice carrying a mutated leptin receptor that abolished Stat3 binding are grossly obese.
2749 17023536 To determine the extent to which Stat3 signaling in Pomc neurons was responsible for these effects, we constructed Pomc-specific Stat3 mutants using a Cre recombinase transgene driven by the Pomc promoter.
2750 17023536 We find that Pomc expression is diminished in the mutant mice, suggesting that Stat3 is required for Pomc transcription.
2751 17023536 These results demonstrate a requirement for Stat3 in transcriptional regulation of Pomc but indicate that this circuit is only one of several components that underlie the neuronal response to leptin and the role of Stat3 in that response.
2752 17023536 Inactivation of signal transducer and activator of transcription 3 in proopiomelanocortin (Pomc) neurons causes decreased pomc expression, mild obesity, and defects in compensatory refeeding.
2753 17023536 Leptin is an adipocyte-derived hormone that signals body energy status to the brain by acting on multiple neuronal subgroups in the hypothalamus, including those that express proopiomelanocortin (Pomc) and agouti-related protein (Agrp).
2754 17023536 Signal transducer and activator of transcription 3 (Stat3) is an important intracellular signaling molecule activated by leptin, and previous studies have shown that mice carrying a mutated leptin receptor that abolished Stat3 binding are grossly obese.
2755 17023536 To determine the extent to which Stat3 signaling in Pomc neurons was responsible for these effects, we constructed Pomc-specific Stat3 mutants using a Cre recombinase transgene driven by the Pomc promoter.
2756 17023536 We find that Pomc expression is diminished in the mutant mice, suggesting that Stat3 is required for Pomc transcription.
2757 17023536 These results demonstrate a requirement for Stat3 in transcriptional regulation of Pomc but indicate that this circuit is only one of several components that underlie the neuronal response to leptin and the role of Stat3 in that response.
2758 17023536 Inactivation of signal transducer and activator of transcription 3 in proopiomelanocortin (Pomc) neurons causes decreased pomc expression, mild obesity, and defects in compensatory refeeding.
2759 17023536 Leptin is an adipocyte-derived hormone that signals body energy status to the brain by acting on multiple neuronal subgroups in the hypothalamus, including those that express proopiomelanocortin (Pomc) and agouti-related protein (Agrp).
2760 17023536 Signal transducer and activator of transcription 3 (Stat3) is an important intracellular signaling molecule activated by leptin, and previous studies have shown that mice carrying a mutated leptin receptor that abolished Stat3 binding are grossly obese.
2761 17023536 To determine the extent to which Stat3 signaling in Pomc neurons was responsible for these effects, we constructed Pomc-specific Stat3 mutants using a Cre recombinase transgene driven by the Pomc promoter.
2762 17023536 We find that Pomc expression is diminished in the mutant mice, suggesting that Stat3 is required for Pomc transcription.
2763 17023536 These results demonstrate a requirement for Stat3 in transcriptional regulation of Pomc but indicate that this circuit is only one of several components that underlie the neuronal response to leptin and the role of Stat3 in that response.
2764 17023536 Inactivation of signal transducer and activator of transcription 3 in proopiomelanocortin (Pomc) neurons causes decreased pomc expression, mild obesity, and defects in compensatory refeeding.
2765 17023536 Leptin is an adipocyte-derived hormone that signals body energy status to the brain by acting on multiple neuronal subgroups in the hypothalamus, including those that express proopiomelanocortin (Pomc) and agouti-related protein (Agrp).
2766 17023536 Signal transducer and activator of transcription 3 (Stat3) is an important intracellular signaling molecule activated by leptin, and previous studies have shown that mice carrying a mutated leptin receptor that abolished Stat3 binding are grossly obese.
2767 17023536 To determine the extent to which Stat3 signaling in Pomc neurons was responsible for these effects, we constructed Pomc-specific Stat3 mutants using a Cre recombinase transgene driven by the Pomc promoter.
2768 17023536 We find that Pomc expression is diminished in the mutant mice, suggesting that Stat3 is required for Pomc transcription.
2769 17023536 These results demonstrate a requirement for Stat3 in transcriptional regulation of Pomc but indicate that this circuit is only one of several components that underlie the neuronal response to leptin and the role of Stat3 in that response.
2770 17032740 Corticotropin-releasing factor and its receptors in the brain of rats with insulin and corticosterone deficits.
2771 17032740 The expression of genes encoding corticotropin-releasing factor (CRF) and its receptor type-1 (CRF1R) and type-2alpha (CRF2R) has been studied in the brain of rats with streptozotocin (STZ)-induced diabetes and adrenalectomy (ADX).
2772 17032740 STZ-diabetic rats demonstrated an induction of expression of CRF mRNA in the magnocellular part of the paraventricular hypothalamic nucleus (PVN) and in the supraoptic nucleus (SON), whereas the CRF transcript in the parvocellular PVN was significantly lower in rats with insulin deficiency.
2773 17032740 The present results suggest opposite effects of insulin and corticosterone deficiency on the hypophysiotropic CRF and the CRF1R mRNA contents, whereas the expression of CRF2R was mostly related to insulin, but not to the corticosterone status.
2774 17032740 Corticotropin-releasing factor and its receptors in the brain of rats with insulin and corticosterone deficits.
2775 17032740 The expression of genes encoding corticotropin-releasing factor (CRF) and its receptor type-1 (CRF1R) and type-2alpha (CRF2R) has been studied in the brain of rats with streptozotocin (STZ)-induced diabetes and adrenalectomy (ADX).
2776 17032740 STZ-diabetic rats demonstrated an induction of expression of CRF mRNA in the magnocellular part of the paraventricular hypothalamic nucleus (PVN) and in the supraoptic nucleus (SON), whereas the CRF transcript in the parvocellular PVN was significantly lower in rats with insulin deficiency.
2777 17032740 The present results suggest opposite effects of insulin and corticosterone deficiency on the hypophysiotropic CRF and the CRF1R mRNA contents, whereas the expression of CRF2R was mostly related to insulin, but not to the corticosterone status.
2778 17039427 Light microscopic and immunochemical studies revealed a pheochromocytoma that contained immunoreactive CRH and was negative for ACTH.
2779 17050686 Urocortin 2 modulates glucose utilization and insulin sensitivity in skeletal muscle.
2780 17050686 Urocortin 2 (Ucn 2), a member of the corticotropin-releasing factor (CRF) family, and its cognate type 2 CRF receptor (CRFR2) are highly expressed in skeletal muscle.
2781 17050686 In keeping with these data, Ucn 2 inhibited insulin-induced Akt and ERK1/2 phosphorylation in cultured skeletal muscle cells and C2C12 myotubes.
2782 17050686 These data are consistent with the hypothesis that Ucn 2 functions as a local negative regulator of glucose uptake in skeletal muscle and encourage exploration of the possibility that suppression of the Ucn 2/CRFR2 pathway may provide benefits in insulin-resistant states such as type 2 diabetes.
2783 17072234 Responses to ACTH or GHRH-arginine tests may be normal for several years though an ACTH and/or GH deficiency has been demonstrated by an insulin tolerance test, which is considered as the gold standard.
2784 17082325 In addition, we studied the effects of ACTH receptor (Mc2r) knockdown and dexamethasone (dex) on interrenal development and pituitary feedback.
2785 17082325 Until 2 d post fertilization (2 dpf) interrenal development assessed by transcripts of key steroidogenic genes (cyp11a1, mc2r, star) is independent of proopiomelanocortin (Pomc) as demonstrated in aal/eya1and lia/fgf3 mutants.
2786 17082325 In addition, we studied the effects of ACTH receptor (Mc2r) knockdown and dexamethasone (dex) on interrenal development and pituitary feedback.
2787 17082325 Until 2 d post fertilization (2 dpf) interrenal development assessed by transcripts of key steroidogenic genes (cyp11a1, mc2r, star) is independent of proopiomelanocortin (Pomc) as demonstrated in aal/eya1and lia/fgf3 mutants.
2788 17097612 Serotonin (5-hydroxytryptamine; 5-HT) 2A receptors contribute to the effects of 5-HT on platelet aggregation and vascular smooth muscle cell proliferation, and are reportedly involved in decreases in plasma levels of adiponectin, an adipokine, in diabetic subjects.
2789 17097612 Here, we report that systemic administration of sarpogrelate, a 5-HT2A receptor antagonist, suppressed appetite and increased hypothalamic pro-opiomelanocortin and cocaine- and amphetamine-regulated transcript, corticotropin releasing hormone, 5-HT2C, and 5-HT1B receptor gene expression.
2790 17097612 These results suggest that obesity increases hypothalamic 5-HT2A receptor gene expression, and pharmacologic inactivation of 5-HT2A receptors inhibits overfeeding and obesity in A(y) mice, but did not increase plasma adiponectin levels.
2791 17128564 Mutations in the coding region of the ACTH receptor (MC2R) have been reported in several families with IGD.
2792 17141181 Akita male mice develop hyperphagia, reducing anorexigenic proopiomelanocortin (POMC), and increasing orexigenic neuropeptide Y (NPY) mRNA levels compared with wt males.
2793 17141181 While Akita female mice also developed hyperphagia, there was no difference in POMC, NPY and leptin levels between Akita and wt females.
2794 17141181 Anorexigenic Cocaine- and amphetamine-regulated transcript (CART) and corticotrophin-releasing factor (CRF) mRNA levels in Akita females were decreased against wt females.
2795 17141181 Akita male mice develop hyperphagia, reducing anorexigenic proopiomelanocortin (POMC), and increasing orexigenic neuropeptide Y (NPY) mRNA levels compared with wt males.
2796 17141181 While Akita female mice also developed hyperphagia, there was no difference in POMC, NPY and leptin levels between Akita and wt females.
2797 17141181 Anorexigenic Cocaine- and amphetamine-regulated transcript (CART) and corticotrophin-releasing factor (CRF) mRNA levels in Akita females were decreased against wt females.
2798 17154037 The hypophysitis presenting with central diabetes insipidus caused isolated adrenocorticotropic hormone (ACTH) deficiency after three years and two months since the onset of his illness.
2799 17218412 Haploinsufficiency in heterozygous glucokinase knockout mice produced effects similar to those produced by hypoglycemia: impaired reproductive function, elevated plasma corticosterone, increased food intake, and hypothalamic gene expression similar to that observed in fasted or leptin-deficient obese mice (increased hypothalamic neuropeptide Y mRNA and reduced hypothalamic proopiomelanocortin mRNA).
2800 17218412 Plasma glucose was elevated 2-fold in glucokinase knockout mice, consistent with a maturity-onset diabetes of the young phenotype, but plasma insulin and leptin levels were normal.
2801 17218444 Neither SB242084, a selective 5-HT2C receptor antagonist, nor SB224289, a selective 5-HT1B receptor antagonist, reversed the appetite-suppressing effects of milnacipran.
2802 17218444 Moreover, milnacipran significantly increased hypothalamic proopiomelanocortin (POMC) and cocaine- and amphetamine-regulated transcript (CART) mRNA levels, while having no effect on hypothalamic neuropeptide Y, ghrelin, corticotropin-releasing hormone (CRH), and suppressor of cytokine signaling-3 mRNA levels.
2803 17218444 Interestingly, milnacipran did not increase plasma corticosterone and blood glucose levels, whereas fenfluramine, which inhibits 5-HT reuptake and stimulates 5-HT release, significantly increased plasma corticosterone and blood glucose levels in association with increased hypothalamic CRH mRNA levels.
2804 17218444 These results suggest that inhibition of 5-HT and NA reuptake induces appetite-suppressing effects independent of 5-HT2C and 5-HT1B receptors, and increases hypothalamic POMC and CART gene expression without increasing plasma corticosterone and blood glucose levels in mice.
2805 17218444 Neither SB242084, a selective 5-HT2C receptor antagonist, nor SB224289, a selective 5-HT1B receptor antagonist, reversed the appetite-suppressing effects of milnacipran.
2806 17218444 Moreover, milnacipran significantly increased hypothalamic proopiomelanocortin (POMC) and cocaine- and amphetamine-regulated transcript (CART) mRNA levels, while having no effect on hypothalamic neuropeptide Y, ghrelin, corticotropin-releasing hormone (CRH), and suppressor of cytokine signaling-3 mRNA levels.
2807 17218444 Interestingly, milnacipran did not increase plasma corticosterone and blood glucose levels, whereas fenfluramine, which inhibits 5-HT reuptake and stimulates 5-HT release, significantly increased plasma corticosterone and blood glucose levels in association with increased hypothalamic CRH mRNA levels.
2808 17218444 These results suggest that inhibition of 5-HT and NA reuptake induces appetite-suppressing effects independent of 5-HT2C and 5-HT1B receptors, and increases hypothalamic POMC and CART gene expression without increasing plasma corticosterone and blood glucose levels in mice.
2809 17218722 Familial adrenocorticotropin-independent macronodular adrenal hyperplasia with aberrant serotonin and vasopressin adrenal receptors.
2810 17250506 Corticotropin and cortisol response to maximal exercise testing in central diabetes insipidus.
2811 17261674 Moreover, the mechanism involved in mediating glucose sensitivity in glucose-inhibited neurons and the neurotransmitter identity (neuropeptide Y [NPY] or pro-opio melanocortin [POMC]) of glucosensing neurons has remained controversial.
2812 17261674 Taken together, hypo- and hyperglycemia are detected by distinct populations of glucosensing neurons, and POMC and NPY neurons are not solely responsible for ARC glucosensing.
2813 17261674 Moreover, the mechanism involved in mediating glucose sensitivity in glucose-inhibited neurons and the neurotransmitter identity (neuropeptide Y [NPY] or pro-opio melanocortin [POMC]) of glucosensing neurons has remained controversial.
2814 17261674 Taken together, hypo- and hyperglycemia are detected by distinct populations of glucosensing neurons, and POMC and NPY neurons are not solely responsible for ARC glucosensing.
2815 17283246 CITED2 is expressed in human adrenocortical cells and regulated by basic fibroblast growth factor.
2816 17283246 Therefore, we analyzed CITED2, a CBP/p300 interacting transactivator with transforming activity, in the human adrenal gland.
2817 17283246 As ACTH and basic fibroblast growth factor (bFGF) are connected to the physiology and growth of adrenocortical cells we studied the regulation of CITED2 by these factors in the NCI-H295R adrenocortical carcinoma cell line.
2818 17283246 In NCI-H295R cells, stimulation by bFGF led to a dose-dependent increase in CITED2 promotor activity, mRNA and protein expression while ACTH had no significant effect.
2819 17283246 CITED2 is expressed in human adrenocortical cells and regulated by basic fibroblast growth factor.
2820 17283246 Therefore, we analyzed CITED2, a CBP/p300 interacting transactivator with transforming activity, in the human adrenal gland.
2821 17283246 As ACTH and basic fibroblast growth factor (bFGF) are connected to the physiology and growth of adrenocortical cells we studied the regulation of CITED2 by these factors in the NCI-H295R adrenocortical carcinoma cell line.
2822 17283246 In NCI-H295R cells, stimulation by bFGF led to a dose-dependent increase in CITED2 promotor activity, mRNA and protein expression while ACTH had no significant effect.
2823 17286228 Ectopic Cushing's syndrome due to concurrent corticotropin-releasing hormone (CRH) and adrenocorticotropic hormone (ACTH) secreted by malignant gastrinoma.
2824 17286228 However, a few cases of ectopic Cushing's syndrome caused by corticotropin-releasing hormone (CRH), or CRH with adrenocorticotropic hormone (ACTH) have been reported.
2825 17286228 Cortisol and ACTH were both highly elevated with pituitary hyperplasia and elevated CRH.
2826 17286228 The existence of ectopic ACTH and CRH in the liver biopsy was also demonstrated immunohistochemically.
2827 17286228 This report demonstrates concurrent ACTH- and CRH-related ectopic Cushing's syndrome caused by malignant gastrinoma with multiple liver metastases that was treated with marginal success using a multidisciplinary medical approach.
2828 17286228 Ectopic Cushing's syndrome due to concurrent corticotropin-releasing hormone (CRH) and adrenocorticotropic hormone (ACTH) secreted by malignant gastrinoma.
2829 17286228 However, a few cases of ectopic Cushing's syndrome caused by corticotropin-releasing hormone (CRH), or CRH with adrenocorticotropic hormone (ACTH) have been reported.
2830 17286228 Cortisol and ACTH were both highly elevated with pituitary hyperplasia and elevated CRH.
2831 17286228 The existence of ectopic ACTH and CRH in the liver biopsy was also demonstrated immunohistochemically.
2832 17286228 This report demonstrates concurrent ACTH- and CRH-related ectopic Cushing's syndrome caused by malignant gastrinoma with multiple liver metastases that was treated with marginal success using a multidisciplinary medical approach.
2833 17286228 Ectopic Cushing's syndrome due to concurrent corticotropin-releasing hormone (CRH) and adrenocorticotropic hormone (ACTH) secreted by malignant gastrinoma.
2834 17286228 However, a few cases of ectopic Cushing's syndrome caused by corticotropin-releasing hormone (CRH), or CRH with adrenocorticotropic hormone (ACTH) have been reported.
2835 17286228 Cortisol and ACTH were both highly elevated with pituitary hyperplasia and elevated CRH.
2836 17286228 The existence of ectopic ACTH and CRH in the liver biopsy was also demonstrated immunohistochemically.
2837 17286228 This report demonstrates concurrent ACTH- and CRH-related ectopic Cushing's syndrome caused by malignant gastrinoma with multiple liver metastases that was treated with marginal success using a multidisciplinary medical approach.
2838 17286228 Ectopic Cushing's syndrome due to concurrent corticotropin-releasing hormone (CRH) and adrenocorticotropic hormone (ACTH) secreted by malignant gastrinoma.
2839 17286228 However, a few cases of ectopic Cushing's syndrome caused by corticotropin-releasing hormone (CRH), or CRH with adrenocorticotropic hormone (ACTH) have been reported.
2840 17286228 Cortisol and ACTH were both highly elevated with pituitary hyperplasia and elevated CRH.
2841 17286228 The existence of ectopic ACTH and CRH in the liver biopsy was also demonstrated immunohistochemically.
2842 17286228 This report demonstrates concurrent ACTH- and CRH-related ectopic Cushing's syndrome caused by malignant gastrinoma with multiple liver metastases that was treated with marginal success using a multidisciplinary medical approach.
2843 17286228 Ectopic Cushing's syndrome due to concurrent corticotropin-releasing hormone (CRH) and adrenocorticotropic hormone (ACTH) secreted by malignant gastrinoma.
2844 17286228 However, a few cases of ectopic Cushing's syndrome caused by corticotropin-releasing hormone (CRH), or CRH with adrenocorticotropic hormone (ACTH) have been reported.
2845 17286228 Cortisol and ACTH were both highly elevated with pituitary hyperplasia and elevated CRH.
2846 17286228 The existence of ectopic ACTH and CRH in the liver biopsy was also demonstrated immunohistochemically.
2847 17286228 This report demonstrates concurrent ACTH- and CRH-related ectopic Cushing's syndrome caused by malignant gastrinoma with multiple liver metastases that was treated with marginal success using a multidisciplinary medical approach.
2848 17334640 RT-PCR analysis showed decreased proopiomelanocortin (POMC) mRNA expression and increased agouti-related protein (AGRP) mRNA expression in Ins2Akita mice.
2849 17334640 These observations indicate that Ins2Akita mice, which are characterized by hypoinsulinemia and hyperglycemia, exhibited hyperphagia and anxiety behavior; the mechanism of action involved the activation of hypothalamic AGRP and the inactivation of hypothalamic POMC.
2850 17334640 RT-PCR analysis showed decreased proopiomelanocortin (POMC) mRNA expression and increased agouti-related protein (AGRP) mRNA expression in Ins2Akita mice.
2851 17334640 These observations indicate that Ins2Akita mice, which are characterized by hypoinsulinemia and hyperglycemia, exhibited hyperphagia and anxiety behavior; the mechanism of action involved the activation of hypothalamic AGRP and the inactivation of hypothalamic POMC.
2852 17360501 Urocortin 3 regulates glucose-stimulated insulin secretion and energy homeostasis.
2853 17360501 Urocortin 3 (Ucn 3), a member of the corticotropin-releasing factor (CRF) family of peptides, is strongly expressed in mammalian pancreatic beta cells and has been shown to stimulate insulin secretion.
2854 17360501 Immunoneutralization of Ucn 3 or pharmacologic blockade of its receptor, the type 2 CRF receptor (CRFR2), attenuated high but not low glucose-induced insulin secretion from isolated islets in vitro.
2855 17360501 Consistently, peripheral injection of a selective CRFR2 antagonist before the administration of a glucose challenge significantly attenuated glucose-induced insulin secretion in vivo.
2856 17397876 Plasma glucose, insulin, beta-endorphin and adrenaline were assessed after intraperitoneal administration of serotonin.
2857 17397876 Serotonin produced hypoglycemic effects without altering plasma insulin and adrenaline levels but increasing beta-endorphin level in STZ-diabetic rats.
2858 17397876 Dihydroergotamine (non-selective 5-HT receptor blocker) and pimozide (5-HT(7) receptor blocker) abolished the hypoglycemic effect of serotonin in STZ-diabetic rats.
2859 17397876 The results demonstrated that serotonin may activate 5-HT(7) receptor on rat adrenal gland to enhance of beta-endorphin secretion, which then stimulates the opioid receptor to increase peripheral glucose utilization, resulting in decreased plasma glucose levels in STZ-diabetic rats.
2860 17397876 Plasma glucose, insulin, beta-endorphin and adrenaline were assessed after intraperitoneal administration of serotonin.
2861 17397876 Serotonin produced hypoglycemic effects without altering plasma insulin and adrenaline levels but increasing beta-endorphin level in STZ-diabetic rats.
2862 17397876 Dihydroergotamine (non-selective 5-HT receptor blocker) and pimozide (5-HT(7) receptor blocker) abolished the hypoglycemic effect of serotonin in STZ-diabetic rats.
2863 17397876 The results demonstrated that serotonin may activate 5-HT(7) receptor on rat adrenal gland to enhance of beta-endorphin secretion, which then stimulates the opioid receptor to increase peripheral glucose utilization, resulting in decreased plasma glucose levels in STZ-diabetic rats.
2864 17397876 Plasma glucose, insulin, beta-endorphin and adrenaline were assessed after intraperitoneal administration of serotonin.
2865 17397876 Serotonin produced hypoglycemic effects without altering plasma insulin and adrenaline levels but increasing beta-endorphin level in STZ-diabetic rats.
2866 17397876 Dihydroergotamine (non-selective 5-HT receptor blocker) and pimozide (5-HT(7) receptor blocker) abolished the hypoglycemic effect of serotonin in STZ-diabetic rats.
2867 17397876 The results demonstrated that serotonin may activate 5-HT(7) receptor on rat adrenal gland to enhance of beta-endorphin secretion, which then stimulates the opioid receptor to increase peripheral glucose utilization, resulting in decreased plasma glucose levels in STZ-diabetic rats.
2868 17400800 Real-time PCR was performed to characterise pro-opiomelanocortin (POMC), neuropeptide Y (NPY), agouti-related protein (AgRP) and OBRb gene expression at the mRNA level.
2869 17400800 This phenotype also shows significant alterations in POMC, NPY, AgRP and OBRb gene expression together with elevations in circulating levels of both plasma leptin and insulin.
2870 17400800 Real-time PCR was performed to characterise pro-opiomelanocortin (POMC), neuropeptide Y (NPY), agouti-related protein (AgRP) and OBRb gene expression at the mRNA level.
2871 17400800 This phenotype also shows significant alterations in POMC, NPY, AgRP and OBRb gene expression together with elevations in circulating levels of both plasma leptin and insulin.
2872 17430247 Although we have not yet identified the signal associated with sucrose drinking, the weight of mesenteric fat correlates inversely with hypothalamic corticotropin-releasing factor (CRF).
2873 17430247 When rats eat lard and sucrose ad libitum, fat stores increase and CRF, ACTH and corticosterone responses are reduced.
2874 17430247 Although we have not yet identified the signal associated with sucrose drinking, the weight of mesenteric fat correlates inversely with hypothalamic corticotropin-releasing factor (CRF).
2875 17430247 When rats eat lard and sucrose ad libitum, fat stores increase and CRF, ACTH and corticosterone responses are reduced.
2876 17437948 Among the neurotransmitters and neuropeptids of the hypothalamus, serotonin, norepinephrine, GABA, cholecystokinin, neuropeptide-Y, Agouti-related protein, alpha-MSH and ghrelin have essential importance in the eating disorders.
2877 17437948 The levels of leptin and galanin determine whether formation of anabolic or catabolic neurotransmitters should take place.
2878 17439089 At latest follow-up the following pituitary hormone deficiencies were identified: ACTH 19; TSH 20; testosterone 18; ADH (diabetes insipidus) eight.
2879 17550779 Insulin action in AgRP-expressing neurons is required for suppression of hepatic glucose production.
2880 17550779 To define the insulin-responsive neurons that mediate these effects, we generated mice with selective inactivation of the insulin receptor (IR) in either pro-opiomelanocortin (POMC)- or agouti-related peptide (AgRP)-expressing neurons of the arcuate nucleus of the hypothalamus.
2881 17550779 While neither POMC- nor AgRP-restricted IR knockout mice exhibited altered energy homeostasis, insulin failed to normally suppress hepatic glucose production during euglycemic-hyperinsulinemic clamps in AgRP-IR knockout (IR(DeltaAgRP)) mice.
2882 17550779 These mice also exhibited reduced insulin-stimulated hepatic interleukin-6 expression and increased hepatic expression of glucose-6-phosphatase.
2883 17550779 These results directly demonstrate that insulin action in POMC and AgRP cells is not required for steady-state regulation of food intake and body weight.
2884 17550779 However, insulin action specifically in AgRP-expressing neurons does play a critical role in controlling hepatic glucose production and may provide a target for the treatment of insulin resistance in type 2 diabetes.
2885 17550779 Insulin action in AgRP-expressing neurons is required for suppression of hepatic glucose production.
2886 17550779 To define the insulin-responsive neurons that mediate these effects, we generated mice with selective inactivation of the insulin receptor (IR) in either pro-opiomelanocortin (POMC)- or agouti-related peptide (AgRP)-expressing neurons of the arcuate nucleus of the hypothalamus.
2887 17550779 While neither POMC- nor AgRP-restricted IR knockout mice exhibited altered energy homeostasis, insulin failed to normally suppress hepatic glucose production during euglycemic-hyperinsulinemic clamps in AgRP-IR knockout (IR(DeltaAgRP)) mice.
2888 17550779 These mice also exhibited reduced insulin-stimulated hepatic interleukin-6 expression and increased hepatic expression of glucose-6-phosphatase.
2889 17550779 These results directly demonstrate that insulin action in POMC and AgRP cells is not required for steady-state regulation of food intake and body weight.
2890 17550779 However, insulin action specifically in AgRP-expressing neurons does play a critical role in controlling hepatic glucose production and may provide a target for the treatment of insulin resistance in type 2 diabetes.
2891 17671657 AMPK is essential for energy homeostasis regulation and glucose sensing by POMC and AgRP neurons.
2892 17671657 To directly address such issues, we generated POMC alpha 2KO and AgRP alpha 2KO mice lacking AMPK alpha2 in proopiomelanocortin- (POMC-) and agouti-related protein-expressing (AgRP-expressing) neurons, key regulators of energy homeostasis.
2893 17671657 Electrophysiological studies in AMPK alpha2-deficient POMC or AgRP neurons revealed normal leptin or insulin action but absent responses to alterations in extracellular glucose levels, showing that glucose-sensing signaling mechanisms in these neurons are distinct from those pathways utilized by leptin or insulin.
2894 17671657 Taken together with the divergent phenotypes of POMC alpha 2KO and AgRP alpha 2KO mice, our findings suggest that while AMPK plays a key role in hypothalamic function, it does not act as a general sensor and integrator of energy homeostasis in the mediobasal hypothalamus.
2895 17671657 AMPK is essential for energy homeostasis regulation and glucose sensing by POMC and AgRP neurons.
2896 17671657 To directly address such issues, we generated POMC alpha 2KO and AgRP alpha 2KO mice lacking AMPK alpha2 in proopiomelanocortin- (POMC-) and agouti-related protein-expressing (AgRP-expressing) neurons, key regulators of energy homeostasis.
2897 17671657 Electrophysiological studies in AMPK alpha2-deficient POMC or AgRP neurons revealed normal leptin or insulin action but absent responses to alterations in extracellular glucose levels, showing that glucose-sensing signaling mechanisms in these neurons are distinct from those pathways utilized by leptin or insulin.
2898 17671657 Taken together with the divergent phenotypes of POMC alpha 2KO and AgRP alpha 2KO mice, our findings suggest that while AMPK plays a key role in hypothalamic function, it does not act as a general sensor and integrator of energy homeostasis in the mediobasal hypothalamus.
2899 17671657 AMPK is essential for energy homeostasis regulation and glucose sensing by POMC and AgRP neurons.
2900 17671657 To directly address such issues, we generated POMC alpha 2KO and AgRP alpha 2KO mice lacking AMPK alpha2 in proopiomelanocortin- (POMC-) and agouti-related protein-expressing (AgRP-expressing) neurons, key regulators of energy homeostasis.
2901 17671657 Electrophysiological studies in AMPK alpha2-deficient POMC or AgRP neurons revealed normal leptin or insulin action but absent responses to alterations in extracellular glucose levels, showing that glucose-sensing signaling mechanisms in these neurons are distinct from those pathways utilized by leptin or insulin.
2902 17671657 Taken together with the divergent phenotypes of POMC alpha 2KO and AgRP alpha 2KO mice, our findings suggest that while AMPK plays a key role in hypothalamic function, it does not act as a general sensor and integrator of energy homeostasis in the mediobasal hypothalamus.
2903 17671657 AMPK is essential for energy homeostasis regulation and glucose sensing by POMC and AgRP neurons.
2904 17671657 To directly address such issues, we generated POMC alpha 2KO and AgRP alpha 2KO mice lacking AMPK alpha2 in proopiomelanocortin- (POMC-) and agouti-related protein-expressing (AgRP-expressing) neurons, key regulators of energy homeostasis.
2905 17671657 Electrophysiological studies in AMPK alpha2-deficient POMC or AgRP neurons revealed normal leptin or insulin action but absent responses to alterations in extracellular glucose levels, showing that glucose-sensing signaling mechanisms in these neurons are distinct from those pathways utilized by leptin or insulin.
2906 17671657 Taken together with the divergent phenotypes of POMC alpha 2KO and AgRP alpha 2KO mice, our findings suggest that while AMPK plays a key role in hypothalamic function, it does not act as a general sensor and integrator of energy homeostasis in the mediobasal hypothalamus.
2907 17712724 Galanin is colocalized with adrenocorticotrophin (ACTH) in the human pituitary and with corticotrophin releasing hormone, arginine, vasopressin, and oxytocin in the hypothalamus.
2908 17712724 Galanin, vasopressin, and oxytocin influence the secretion of pituitary ACTH.
2909 17712724 The aim of this study was to investigate if the endogenous stimulation of ACTH release in Addison's disease was reflected in plasma galanin, vasopressin, and oxytocin.
2910 17712724 ACTH, galanin, vasopressin, and oxytocin were measured in plasma from 14 patients with Addison's disease, one patient with Nelson's syndrome, and 14 healthy controls.
2911 17712724 There was no difference in galanin or vasopressin between patients and controls or between samples with low or high ACTH concentrations.
2912 17712724 The highest ACTH and galanin levels were found in the patient with Nelson's syndrome.
2913 17712724 In conclusion, increased plasma ACTH was not reflected in elevated plasma galanin or vasopressin.
2914 17712724 Galanin is colocalized with adrenocorticotrophin (ACTH) in the human pituitary and with corticotrophin releasing hormone, arginine, vasopressin, and oxytocin in the hypothalamus.
2915 17712724 Galanin, vasopressin, and oxytocin influence the secretion of pituitary ACTH.
2916 17712724 The aim of this study was to investigate if the endogenous stimulation of ACTH release in Addison's disease was reflected in plasma galanin, vasopressin, and oxytocin.
2917 17712724 ACTH, galanin, vasopressin, and oxytocin were measured in plasma from 14 patients with Addison's disease, one patient with Nelson's syndrome, and 14 healthy controls.
2918 17712724 There was no difference in galanin or vasopressin between patients and controls or between samples with low or high ACTH concentrations.
2919 17712724 The highest ACTH and galanin levels were found in the patient with Nelson's syndrome.
2920 17712724 In conclusion, increased plasma ACTH was not reflected in elevated plasma galanin or vasopressin.
2921 17712724 Galanin is colocalized with adrenocorticotrophin (ACTH) in the human pituitary and with corticotrophin releasing hormone, arginine, vasopressin, and oxytocin in the hypothalamus.
2922 17712724 Galanin, vasopressin, and oxytocin influence the secretion of pituitary ACTH.
2923 17712724 The aim of this study was to investigate if the endogenous stimulation of ACTH release in Addison's disease was reflected in plasma galanin, vasopressin, and oxytocin.
2924 17712724 ACTH, galanin, vasopressin, and oxytocin were measured in plasma from 14 patients with Addison's disease, one patient with Nelson's syndrome, and 14 healthy controls.
2925 17712724 There was no difference in galanin or vasopressin between patients and controls or between samples with low or high ACTH concentrations.
2926 17712724 The highest ACTH and galanin levels were found in the patient with Nelson's syndrome.
2927 17712724 In conclusion, increased plasma ACTH was not reflected in elevated plasma galanin or vasopressin.
2928 17712724 Galanin is colocalized with adrenocorticotrophin (ACTH) in the human pituitary and with corticotrophin releasing hormone, arginine, vasopressin, and oxytocin in the hypothalamus.
2929 17712724 Galanin, vasopressin, and oxytocin influence the secretion of pituitary ACTH.
2930 17712724 The aim of this study was to investigate if the endogenous stimulation of ACTH release in Addison's disease was reflected in plasma galanin, vasopressin, and oxytocin.
2931 17712724 ACTH, galanin, vasopressin, and oxytocin were measured in plasma from 14 patients with Addison's disease, one patient with Nelson's syndrome, and 14 healthy controls.
2932 17712724 There was no difference in galanin or vasopressin between patients and controls or between samples with low or high ACTH concentrations.
2933 17712724 The highest ACTH and galanin levels were found in the patient with Nelson's syndrome.
2934 17712724 In conclusion, increased plasma ACTH was not reflected in elevated plasma galanin or vasopressin.
2935 17712724 Galanin is colocalized with adrenocorticotrophin (ACTH) in the human pituitary and with corticotrophin releasing hormone, arginine, vasopressin, and oxytocin in the hypothalamus.
2936 17712724 Galanin, vasopressin, and oxytocin influence the secretion of pituitary ACTH.
2937 17712724 The aim of this study was to investigate if the endogenous stimulation of ACTH release in Addison's disease was reflected in plasma galanin, vasopressin, and oxytocin.
2938 17712724 ACTH, galanin, vasopressin, and oxytocin were measured in plasma from 14 patients with Addison's disease, one patient with Nelson's syndrome, and 14 healthy controls.
2939 17712724 There was no difference in galanin or vasopressin between patients and controls or between samples with low or high ACTH concentrations.
2940 17712724 The highest ACTH and galanin levels were found in the patient with Nelson's syndrome.
2941 17712724 In conclusion, increased plasma ACTH was not reflected in elevated plasma galanin or vasopressin.
2942 17712724 Galanin is colocalized with adrenocorticotrophin (ACTH) in the human pituitary and with corticotrophin releasing hormone, arginine, vasopressin, and oxytocin in the hypothalamus.
2943 17712724 Galanin, vasopressin, and oxytocin influence the secretion of pituitary ACTH.
2944 17712724 The aim of this study was to investigate if the endogenous stimulation of ACTH release in Addison's disease was reflected in plasma galanin, vasopressin, and oxytocin.
2945 17712724 ACTH, galanin, vasopressin, and oxytocin were measured in plasma from 14 patients with Addison's disease, one patient with Nelson's syndrome, and 14 healthy controls.
2946 17712724 There was no difference in galanin or vasopressin between patients and controls or between samples with low or high ACTH concentrations.
2947 17712724 The highest ACTH and galanin levels were found in the patient with Nelson's syndrome.
2948 17712724 In conclusion, increased plasma ACTH was not reflected in elevated plasma galanin or vasopressin.
2949 17712724 Galanin is colocalized with adrenocorticotrophin (ACTH) in the human pituitary and with corticotrophin releasing hormone, arginine, vasopressin, and oxytocin in the hypothalamus.
2950 17712724 Galanin, vasopressin, and oxytocin influence the secretion of pituitary ACTH.
2951 17712724 The aim of this study was to investigate if the endogenous stimulation of ACTH release in Addison's disease was reflected in plasma galanin, vasopressin, and oxytocin.
2952 17712724 ACTH, galanin, vasopressin, and oxytocin were measured in plasma from 14 patients with Addison's disease, one patient with Nelson's syndrome, and 14 healthy controls.
2953 17712724 There was no difference in galanin or vasopressin between patients and controls or between samples with low or high ACTH concentrations.
2954 17712724 The highest ACTH and galanin levels were found in the patient with Nelson's syndrome.
2955 17712724 In conclusion, increased plasma ACTH was not reflected in elevated plasma galanin or vasopressin.
2956 17724010 He was euthyroid with positive thyroid antibodies, low cortisol, aldosterone and very high adrenocorticotropin (ActH) and renin levels.
2957 17728716 To address these issues, we disrupted glucose sensing in glucose-excited pro-opiomelanocortin (POMC) neurons via transgenic expression of a mutant Kir6.2 subunit (encoded by the Kcnj11 gene) that prevents ATP-mediated closure of K(ATP) channels.
2958 17728716 The mechanism for obesity-induced loss of glucose sensing in POMC neurons involves uncoupling protein 2 (UCP2), a mitochondrial protein that impairs glucose-stimulated ATP production.
2959 17728716 UCP2 negatively regulates glucose sensing in POMC neurons.
2960 17728716 To address these issues, we disrupted glucose sensing in glucose-excited pro-opiomelanocortin (POMC) neurons via transgenic expression of a mutant Kir6.2 subunit (encoded by the Kcnj11 gene) that prevents ATP-mediated closure of K(ATP) channels.
2961 17728716 The mechanism for obesity-induced loss of glucose sensing in POMC neurons involves uncoupling protein 2 (UCP2), a mitochondrial protein that impairs glucose-stimulated ATP production.
2962 17728716 UCP2 negatively regulates glucose sensing in POMC neurons.
2963 17728716 To address these issues, we disrupted glucose sensing in glucose-excited pro-opiomelanocortin (POMC) neurons via transgenic expression of a mutant Kir6.2 subunit (encoded by the Kcnj11 gene) that prevents ATP-mediated closure of K(ATP) channels.
2964 17728716 The mechanism for obesity-induced loss of glucose sensing in POMC neurons involves uncoupling protein 2 (UCP2), a mitochondrial protein that impairs glucose-stimulated ATP production.
2965 17728716 UCP2 negatively regulates glucose sensing in POMC neurons.
2966 17853061 DM type 2 is also accompanied by increased tissue levels of angiotensin II (Ang II), which stimulates the HPA axis through the Ang II type 1 receptors (AT1).
2967 17853061 In response to hCRH, time-integrated secretion of ACTH was not altered by candesartan administration, however, the cortisol response was decreased significantly compared to baseline (mean +/- SEM, 2327 +/- 148.3 vs. 1943 +/- 131.9 microg/dl, P = 0.005) suggesting reduced sensitivity of the adrenals to ACTH.
2968 17884440 We measured adrenal weight, plasma ACTH, serum and urinary corticosterone, and serum leptin in OLETF rats at 5 to 36 weeks of age.
2969 17884440 Overall, there was an inverse correlation between serum corticosterone and serum leptin (r = -0.374, P < .0005), whereas there was a positive correlation between plasma ACTH and serum leptin (r = 0.654, P < .0001).
2970 17884440 We measured adrenal weight, plasma ACTH, serum and urinary corticosterone, and serum leptin in OLETF rats at 5 to 36 weeks of age.
2971 17884440 Overall, there was an inverse correlation between serum corticosterone and serum leptin (r = -0.374, P < .0005), whereas there was a positive correlation between plasma ACTH and serum leptin (r = 0.654, P < .0001).
2972 17943697 A retrospective analysis of all histological and immunohistochemical slides rendered an adenoma exhibiting chromophobia, ACTH-positivity and features of atypia such as elevated p53 and Ki67 expression as well as nuclear polymorphism.
2973 17992609 In laboratory examination, plasma concentration of free thyroxine, thyroid stimulating hormone (TSH), cortisol, and adrenocorticotropic hormone (ACTH) was low.
2974 17992609 Provocative tests after delivery revealed a low response in TSH, prolactin (PRL), and follicle stimulating hormone (FSH).
2975 18006626 Maternal perinatal undernutrition drastically reduces postnatal leptin surge and affects the development of arcuate nucleus proopiomelanocortin neurons in neonatal male rat pups.
2976 18006626 The present study aimed at examining the impact of maternal undernutrition on leptin plasma levels in newborn male rats and on the arcuate nucleus proopiomelanocortin (POMC) and neuropeptide Y (NPY) neurons that are major leptin targets.
2977 18006626 Using a model of perinatal maternal 50% food-restricted diet (FR50) in the rat, we evaluated leptin plasma levels and hypothalamic POMC and NPY gene expression from postnatal day (PND) 4 to PND30 in both control and FR50 offspring.
2978 18006626 In FR50 animals, using semiquantitative RT-PCR and in situ hybridization, we showed that the hypothalamic POMC mRNA level was decreased from PND14 until PND30, whereas NPY gene expression was not significantly modified.
2979 18006626 In PND21 FR50 animals, we observed strikingly reduced immunoreactive beta-endorphin nerve fibers projecting to the hypothalamic paraventricular nucleus without affecting NPY projections.
2980 18006626 Our data showed that maternal undernutrition drastically reduces the postnatal surge of plasma leptin, disturbing particularly the hypothalamic wiring as well as the gene expression of the anorexigenic POMC neurons in male rat pups.
2981 18006626 Maternal perinatal undernutrition drastically reduces postnatal leptin surge and affects the development of arcuate nucleus proopiomelanocortin neurons in neonatal male rat pups.
2982 18006626 The present study aimed at examining the impact of maternal undernutrition on leptin plasma levels in newborn male rats and on the arcuate nucleus proopiomelanocortin (POMC) and neuropeptide Y (NPY) neurons that are major leptin targets.
2983 18006626 Using a model of perinatal maternal 50% food-restricted diet (FR50) in the rat, we evaluated leptin plasma levels and hypothalamic POMC and NPY gene expression from postnatal day (PND) 4 to PND30 in both control and FR50 offspring.
2984 18006626 In FR50 animals, using semiquantitative RT-PCR and in situ hybridization, we showed that the hypothalamic POMC mRNA level was decreased from PND14 until PND30, whereas NPY gene expression was not significantly modified.
2985 18006626 In PND21 FR50 animals, we observed strikingly reduced immunoreactive beta-endorphin nerve fibers projecting to the hypothalamic paraventricular nucleus without affecting NPY projections.
2986 18006626 Our data showed that maternal undernutrition drastically reduces the postnatal surge of plasma leptin, disturbing particularly the hypothalamic wiring as well as the gene expression of the anorexigenic POMC neurons in male rat pups.
2987 18006626 Maternal perinatal undernutrition drastically reduces postnatal leptin surge and affects the development of arcuate nucleus proopiomelanocortin neurons in neonatal male rat pups.
2988 18006626 The present study aimed at examining the impact of maternal undernutrition on leptin plasma levels in newborn male rats and on the arcuate nucleus proopiomelanocortin (POMC) and neuropeptide Y (NPY) neurons that are major leptin targets.
2989 18006626 Using a model of perinatal maternal 50% food-restricted diet (FR50) in the rat, we evaluated leptin plasma levels and hypothalamic POMC and NPY gene expression from postnatal day (PND) 4 to PND30 in both control and FR50 offspring.
2990 18006626 In FR50 animals, using semiquantitative RT-PCR and in situ hybridization, we showed that the hypothalamic POMC mRNA level was decreased from PND14 until PND30, whereas NPY gene expression was not significantly modified.
2991 18006626 In PND21 FR50 animals, we observed strikingly reduced immunoreactive beta-endorphin nerve fibers projecting to the hypothalamic paraventricular nucleus without affecting NPY projections.
2992 18006626 Our data showed that maternal undernutrition drastically reduces the postnatal surge of plasma leptin, disturbing particularly the hypothalamic wiring as well as the gene expression of the anorexigenic POMC neurons in male rat pups.
2993 18006626 Maternal perinatal undernutrition drastically reduces postnatal leptin surge and affects the development of arcuate nucleus proopiomelanocortin neurons in neonatal male rat pups.
2994 18006626 The present study aimed at examining the impact of maternal undernutrition on leptin plasma levels in newborn male rats and on the arcuate nucleus proopiomelanocortin (POMC) and neuropeptide Y (NPY) neurons that are major leptin targets.
2995 18006626 Using a model of perinatal maternal 50% food-restricted diet (FR50) in the rat, we evaluated leptin plasma levels and hypothalamic POMC and NPY gene expression from postnatal day (PND) 4 to PND30 in both control and FR50 offspring.
2996 18006626 In FR50 animals, using semiquantitative RT-PCR and in situ hybridization, we showed that the hypothalamic POMC mRNA level was decreased from PND14 until PND30, whereas NPY gene expression was not significantly modified.
2997 18006626 In PND21 FR50 animals, we observed strikingly reduced immunoreactive beta-endorphin nerve fibers projecting to the hypothalamic paraventricular nucleus without affecting NPY projections.
2998 18006626 Our data showed that maternal undernutrition drastically reduces the postnatal surge of plasma leptin, disturbing particularly the hypothalamic wiring as well as the gene expression of the anorexigenic POMC neurons in male rat pups.
2999 18006626 Maternal perinatal undernutrition drastically reduces postnatal leptin surge and affects the development of arcuate nucleus proopiomelanocortin neurons in neonatal male rat pups.
3000 18006626 The present study aimed at examining the impact of maternal undernutrition on leptin plasma levels in newborn male rats and on the arcuate nucleus proopiomelanocortin (POMC) and neuropeptide Y (NPY) neurons that are major leptin targets.
3001 18006626 Using a model of perinatal maternal 50% food-restricted diet (FR50) in the rat, we evaluated leptin plasma levels and hypothalamic POMC and NPY gene expression from postnatal day (PND) 4 to PND30 in both control and FR50 offspring.
3002 18006626 In FR50 animals, using semiquantitative RT-PCR and in situ hybridization, we showed that the hypothalamic POMC mRNA level was decreased from PND14 until PND30, whereas NPY gene expression was not significantly modified.
3003 18006626 In PND21 FR50 animals, we observed strikingly reduced immunoreactive beta-endorphin nerve fibers projecting to the hypothalamic paraventricular nucleus without affecting NPY projections.
3004 18006626 Our data showed that maternal undernutrition drastically reduces the postnatal surge of plasma leptin, disturbing particularly the hypothalamic wiring as well as the gene expression of the anorexigenic POMC neurons in male rat pups.
3005 18006626 Maternal perinatal undernutrition drastically reduces postnatal leptin surge and affects the development of arcuate nucleus proopiomelanocortin neurons in neonatal male rat pups.
3006 18006626 The present study aimed at examining the impact of maternal undernutrition on leptin plasma levels in newborn male rats and on the arcuate nucleus proopiomelanocortin (POMC) and neuropeptide Y (NPY) neurons that are major leptin targets.
3007 18006626 Using a model of perinatal maternal 50% food-restricted diet (FR50) in the rat, we evaluated leptin plasma levels and hypothalamic POMC and NPY gene expression from postnatal day (PND) 4 to PND30 in both control and FR50 offspring.
3008 18006626 In FR50 animals, using semiquantitative RT-PCR and in situ hybridization, we showed that the hypothalamic POMC mRNA level was decreased from PND14 until PND30, whereas NPY gene expression was not significantly modified.
3009 18006626 In PND21 FR50 animals, we observed strikingly reduced immunoreactive beta-endorphin nerve fibers projecting to the hypothalamic paraventricular nucleus without affecting NPY projections.
3010 18006626 Our data showed that maternal undernutrition drastically reduces the postnatal surge of plasma leptin, disturbing particularly the hypothalamic wiring as well as the gene expression of the anorexigenic POMC neurons in male rat pups.
3011 18018629 [Case of small cell lung cancer complicated with diabetes insipidus and Cushing syndrome due to ectopic adrenocorticotropic hormone secretion].
3012 18018629 We concluded that this case was Cushing syndrome caused by ectopic adrenocorticotropic hormone-producing small cell lung cancer, and that it presented with diabetes insipidus because of pituitary metastasis.
3013 18018629 [Case of small cell lung cancer complicated with diabetes insipidus and Cushing syndrome due to ectopic adrenocorticotropic hormone secretion].
3014 18018629 We concluded that this case was Cushing syndrome caused by ectopic adrenocorticotropic hormone-producing small cell lung cancer, and that it presented with diabetes insipidus because of pituitary metastasis.
3015 18058602 Conversely, corticotrophin-releasing hormone (CRH) and melanotan-II (MT-II, a synthetic structural homologue of alpha-melanocyte-stimulating hormone, alphaMSH) inhibit feeding behavior.
3016 18058602 After bilateral electrolytic lesions of the PVN, rats were given ghrelin intraperitoneally (i. p.), or intracerebroventricular (i. c. v.) infusion of CRH or MT-II.
3017 18058602 We measured the cumulative food intake (FI) for 4 h after ghrelin injection in rats fed AD LIB, and the changes in FI at 15 min, 30 min, 1 h, and 2 h after infusion of CRH and MT-II in rats fasted for 24 h.
3018 18058602 Thus, ghrelin and CRH showed more potent orexigenic and anorectic effects in PVN-lesioned rats, respectively, but MT-II lost its inhibitory action on feeding behavior.
3019 18058602 These results suggest that the hyperphagia and obesity induced by PVN lesions may be related to an increased orexigenic action of ghrelin due to the destruction of endogenous CRH and alphaMSH receptors.
3020 18128849 Results of the study suggest, therefore, that ACTH may prove to be as effective in the control of chronic non-Addisonian hypoglycemosis as insulin is in the control of diabetes mellitus.
3021 18183075 In the present study, to investigate the effect of hyperglycemia on the function of 5-HT2A receptors, we compared the 5-HT2A receptor-mediated wet-dog shake responses in rats treated with adrenocorticotropic hormone (ACTH), dexamethasone and streptozotocin.
3022 18183075 The wet-dog shake responses induced by (+/-)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI), a 5-HT2A receptor agonist, were significantly enhanced at 14 days after repeated treatment with ACTH and dexamethasone.
3023 18183075 In the present study, to investigate the effect of hyperglycemia on the function of 5-HT2A receptors, we compared the 5-HT2A receptor-mediated wet-dog shake responses in rats treated with adrenocorticotropic hormone (ACTH), dexamethasone and streptozotocin.
3024 18183075 The wet-dog shake responses induced by (+/-)-1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI), a 5-HT2A receptor agonist, were significantly enhanced at 14 days after repeated treatment with ACTH and dexamethasone.
3025 18209867 The gestation dramatically affects the maternal hypothalamic-pituitary-adrenal axis, resulting in increased hepatic production of corticosteroid-binding globulin (CBG), increased levels of serum, salivary and urinary free cortisol, lack of suppression of cortisol levels after dexamethasone administration and placental production of CRH and ACTH.
3026 18270844 Thyroid-stimulating hormone (TSH) and ACTH deficiency occur after intensive irradiation only (>50 Gy) with a long-term cumulative frequency of 3-6%.
3027 18338267 A minimum set of pre-operative endocrine tests should include serum electrolytes, cortisol (at 08.00-09.00 h), free-T4, TSH, prolactin, oestradiol/testosterone, LH, FSH and IGF-1.
3028 18338267 Some clinicians will choose to perform pre-operative Synacthen or insulin tolerance testing to further define ACTH reserve.
3029 18421906 The various hormones, proteins and other compounds related to developing obesity, insulin resistance and type 2 diabetes are analyzed in the paper. 1) Leptin, ciliary neurutrophic factor, adiponectin, glucagon-like peptide 1, peptide YY, neuromedin S, as well as the protein receptors of these hormones decrease the food consumption, increase the energy turnover, and prevent obesity, insulin resistance, and type 2 diabetes development.
3030 18421906 The mediators of these hormone and receptor actions are melanocyte stimulating hormone (MSH), corticotropin-releasing hormone (CRH), and the others. 2) Ghrelin, endogenose cannabinoides, galanin-like peptide and the mediators of their actions: neuropeptide Y (NPY) and Agouti gene related protein (AGRP) increase the appetite and food consumption.
3031 18439911 Ablation of estrogen receptor alpha (ERalpha) prevents upregulation of POMC by leptin and insulin.
3032 18439911 We investigated the role of estrogen receptor alpha (ERalpha) in the regulation of the hypothalamic POMC in females.
3033 18439911 RT-PCR showed a significant attenuation of POMC expression in both ERaKOAkt and ERaKO mice, irrespective of the elevated leptin serum levels or hyperinsulinemia, while elevated serum leptin levels in AFO and B6FO mice upregulated POMC gene expression.
3034 18439911 These results indicate that ERalpha plays an essential role in leptin- and insulin-stimulated upregulation of the POMC gene.
3035 18439911 Ablation of estrogen receptor alpha (ERalpha) prevents upregulation of POMC by leptin and insulin.
3036 18439911 We investigated the role of estrogen receptor alpha (ERalpha) in the regulation of the hypothalamic POMC in females.
3037 18439911 RT-PCR showed a significant attenuation of POMC expression in both ERaKOAkt and ERaKO mice, irrespective of the elevated leptin serum levels or hyperinsulinemia, while elevated serum leptin levels in AFO and B6FO mice upregulated POMC gene expression.
3038 18439911 These results indicate that ERalpha plays an essential role in leptin- and insulin-stimulated upregulation of the POMC gene.
3039 18439911 Ablation of estrogen receptor alpha (ERalpha) prevents upregulation of POMC by leptin and insulin.
3040 18439911 We investigated the role of estrogen receptor alpha (ERalpha) in the regulation of the hypothalamic POMC in females.
3041 18439911 RT-PCR showed a significant attenuation of POMC expression in both ERaKOAkt and ERaKO mice, irrespective of the elevated leptin serum levels or hyperinsulinemia, while elevated serum leptin levels in AFO and B6FO mice upregulated POMC gene expression.
3042 18439911 These results indicate that ERalpha plays an essential role in leptin- and insulin-stimulated upregulation of the POMC gene.
3043 18439911 Ablation of estrogen receptor alpha (ERalpha) prevents upregulation of POMC by leptin and insulin.
3044 18439911 We investigated the role of estrogen receptor alpha (ERalpha) in the regulation of the hypothalamic POMC in females.
3045 18439911 RT-PCR showed a significant attenuation of POMC expression in both ERaKOAkt and ERaKO mice, irrespective of the elevated leptin serum levels or hyperinsulinemia, while elevated serum leptin levels in AFO and B6FO mice upregulated POMC gene expression.
3046 18439911 These results indicate that ERalpha plays an essential role in leptin- and insulin-stimulated upregulation of the POMC gene.
3047 18477467 Serotonin systems upregulate the expression of hypothalamic NUCB2 via 5-HT2C receptors and induce anorexia via a leptin-independent pathway in mice.
3048 18477467 NEFA/nucleobindin2 (NUCB2), a novel satiety molecule, is associated with leptin-independent melanocortin signaling in the central nervous system.
3049 18477467 Here, we show that systemic administration of m-chlorophenylpiperazine (mCPP), a serotonin 5-HT1B/2C receptor agonist, significantly increased the expression of hypothalamic NUCB2 in wild-type mice.
3050 18477467 The increases in hypothalamic NUCB2 expression induced by mCPP were attenuated in 5-HT2C receptor mutant mice.
3051 18477467 On the other hand, the expression of hypothalamic NUCB2 and proopiomelanocortin (POMC) was significantly decreased in hyperphagic and non-obese 5-HT2C receptor mutants compared with age-matched wild-type mice.
3052 18477467 Interestingly, despite increased expression of hypothalamic POMC, hypothalamic NUCB2 expression was decreased in 5-HT2C receptor mutant mice with heterozygous mutation of beta-endorphin gene.
3053 18477467 These findings suggest that 5-HT systems upregulate the expression of hypothalamic NUCB2 via 5-HT2C receptors, and induce anorexia via a leptin-independent pathway in mice.
3054 18477467 Serotonin systems upregulate the expression of hypothalamic NUCB2 via 5-HT2C receptors and induce anorexia via a leptin-independent pathway in mice.
3055 18477467 NEFA/nucleobindin2 (NUCB2), a novel satiety molecule, is associated with leptin-independent melanocortin signaling in the central nervous system.
3056 18477467 Here, we show that systemic administration of m-chlorophenylpiperazine (mCPP), a serotonin 5-HT1B/2C receptor agonist, significantly increased the expression of hypothalamic NUCB2 in wild-type mice.
3057 18477467 The increases in hypothalamic NUCB2 expression induced by mCPP were attenuated in 5-HT2C receptor mutant mice.
3058 18477467 On the other hand, the expression of hypothalamic NUCB2 and proopiomelanocortin (POMC) was significantly decreased in hyperphagic and non-obese 5-HT2C receptor mutants compared with age-matched wild-type mice.
3059 18477467 Interestingly, despite increased expression of hypothalamic POMC, hypothalamic NUCB2 expression was decreased in 5-HT2C receptor mutant mice with heterozygous mutation of beta-endorphin gene.
3060 18477467 These findings suggest that 5-HT systems upregulate the expression of hypothalamic NUCB2 via 5-HT2C receptors, and induce anorexia via a leptin-independent pathway in mice.
3061 18551113 The aim of this study was to investigate a series of single-nucleotide polymorphisms (SNPs) in the genes MC2R, MC3R, MC4R, MC5R, POMC, and ENPP1 for association with obesity.
3062 18551113 Weaker associations were detected between the SNPs rs1541276 in the MC5R, rs1926065 in the MC3R genes and obesity (P = 0.04 and P = 0.03, respectively), and between SNPs rs2236700 in the MC5R, rs2118404 in the POMC, rs943003 in the ENPP1 genes and type 2 diabetes (P = 0.03, P = 0.02 and P = 0.02, respectively); these associations did not, however, remain significant after correction for multiple testing.
3063 18551113 In this study, we did not find association between the frequently studied ENPP1 K121Q variant, nor SNPs in the MCR or POMC genes and obesity or type 2 diabetes.
3064 18551113 The aim of this study was to investigate a series of single-nucleotide polymorphisms (SNPs) in the genes MC2R, MC3R, MC4R, MC5R, POMC, and ENPP1 for association with obesity.
3065 18551113 Weaker associations were detected between the SNPs rs1541276 in the MC5R, rs1926065 in the MC3R genes and obesity (P = 0.04 and P = 0.03, respectively), and between SNPs rs2236700 in the MC5R, rs2118404 in the POMC, rs943003 in the ENPP1 genes and type 2 diabetes (P = 0.03, P = 0.02 and P = 0.02, respectively); these associations did not, however, remain significant after correction for multiple testing.
3066 18551113 In this study, we did not find association between the frequently studied ENPP1 K121Q variant, nor SNPs in the MCR or POMC genes and obesity or type 2 diabetes.
3067 18551113 The aim of this study was to investigate a series of single-nucleotide polymorphisms (SNPs) in the genes MC2R, MC3R, MC4R, MC5R, POMC, and ENPP1 for association with obesity.
3068 18551113 Weaker associations were detected between the SNPs rs1541276 in the MC5R, rs1926065 in the MC3R genes and obesity (P = 0.04 and P = 0.03, respectively), and between SNPs rs2236700 in the MC5R, rs2118404 in the POMC, rs943003 in the ENPP1 genes and type 2 diabetes (P = 0.03, P = 0.02 and P = 0.02, respectively); these associations did not, however, remain significant after correction for multiple testing.
3069 18551113 In this study, we did not find association between the frequently studied ENPP1 K121Q variant, nor SNPs in the MCR or POMC genes and obesity or type 2 diabetes.
3070 18551122 The objectives of this study were to identify potential alterations in gene expression of melanocortin-4 receptor (MC4-R), proopiomelanocortin (POMC), and Agouti-related protein (AgRP) in mouse hypothalamus under a chronic peripheral infusion of leptin or at early (8 weeks) and advanced (16 weeks) phases of diet-induced obesity.
3071 18551122 We reported that in control mice, but not in obese mice, leptin infusion induced an increase in POMC mRNA level as well as in MC4-R mRNA level suggesting that leptin could act directly and/or through alpha-melanocyte-stimulating hormone (alpha-MSH).
3072 18551122 This hypothesis was reinforced after in vitro studies, using the mouse hypothalamic GT1-7 cell line, since both leptin and Norleucine(4), D-Phenylalanine(7)-alpha-MSH (NDP-alpha-MSH) treatments increased MC4-R expression.
3073 18551122 After 8 weeks of high-fat diet, nondiabetic obese mice became resistant to the central action of leptin and their hypothalamic content of POMC and AgRP mRNA were decreased without modification of MC4-R mRNA level.
3074 18551122 The objectives of this study were to identify potential alterations in gene expression of melanocortin-4 receptor (MC4-R), proopiomelanocortin (POMC), and Agouti-related protein (AgRP) in mouse hypothalamus under a chronic peripheral infusion of leptin or at early (8 weeks) and advanced (16 weeks) phases of diet-induced obesity.
3075 18551122 We reported that in control mice, but not in obese mice, leptin infusion induced an increase in POMC mRNA level as well as in MC4-R mRNA level suggesting that leptin could act directly and/or through alpha-melanocyte-stimulating hormone (alpha-MSH).
3076 18551122 This hypothesis was reinforced after in vitro studies, using the mouse hypothalamic GT1-7 cell line, since both leptin and Norleucine(4), D-Phenylalanine(7)-alpha-MSH (NDP-alpha-MSH) treatments increased MC4-R expression.
3077 18551122 After 8 weeks of high-fat diet, nondiabetic obese mice became resistant to the central action of leptin and their hypothalamic content of POMC and AgRP mRNA were decreased without modification of MC4-R mRNA level.
3078 18551122 The objectives of this study were to identify potential alterations in gene expression of melanocortin-4 receptor (MC4-R), proopiomelanocortin (POMC), and Agouti-related protein (AgRP) in mouse hypothalamus under a chronic peripheral infusion of leptin or at early (8 weeks) and advanced (16 weeks) phases of diet-induced obesity.
3079 18551122 We reported that in control mice, but not in obese mice, leptin infusion induced an increase in POMC mRNA level as well as in MC4-R mRNA level suggesting that leptin could act directly and/or through alpha-melanocyte-stimulating hormone (alpha-MSH).
3080 18551122 This hypothesis was reinforced after in vitro studies, using the mouse hypothalamic GT1-7 cell line, since both leptin and Norleucine(4), D-Phenylalanine(7)-alpha-MSH (NDP-alpha-MSH) treatments increased MC4-R expression.
3081 18551122 After 8 weeks of high-fat diet, nondiabetic obese mice became resistant to the central action of leptin and their hypothalamic content of POMC and AgRP mRNA were decreased without modification of MC4-R mRNA level.
3082 18551122 The objectives of this study were to identify potential alterations in gene expression of melanocortin-4 receptor (MC4-R), proopiomelanocortin (POMC), and Agouti-related protein (AgRP) in mouse hypothalamus under a chronic peripheral infusion of leptin or at early (8 weeks) and advanced (16 weeks) phases of diet-induced obesity.
3083 18551122 We reported that in control mice, but not in obese mice, leptin infusion induced an increase in POMC mRNA level as well as in MC4-R mRNA level suggesting that leptin could act directly and/or through alpha-melanocyte-stimulating hormone (alpha-MSH).
3084 18551122 This hypothesis was reinforced after in vitro studies, using the mouse hypothalamic GT1-7 cell line, since both leptin and Norleucine(4), D-Phenylalanine(7)-alpha-MSH (NDP-alpha-MSH) treatments increased MC4-R expression.
3085 18551122 After 8 weeks of high-fat diet, nondiabetic obese mice became resistant to the central action of leptin and their hypothalamic content of POMC and AgRP mRNA were decreased without modification of MC4-R mRNA level.
3086 18551299 The subtotally resected lesion consisted of synaptophysin-immunoreactive lobules of (a) large, polygonal, amphophilic, PAS-positive cells immunoreactive for ACTH, beta-endorphin, alpha melanocyte stimulating hormone (MSH), and keratin (CAM5.2) in some cells showing Crooke hyaline change, (b) less frequent acidophilic, growth hormone (GH) immunoreactive cells, and (c) rare luteinizing hormone (LH) and/or alpha subunit immunopositive cells.
3087 18551299 Also conspicuous were smaller cells resembling Rathke-type epithelium forming rosettes to sizable glands immunoreactive for EMA, keratin, S-100 protein, galectin-3 and rarely for synaptophysin and/or one of the above-noted adenohypophysial hormones.
3088 18551299 Transcription factors, including Neuro-D1 and Pit-1, were present in ACTH- and GH-producing cells, respectively, but only in occasional Rathke-type cells.
3089 18551299 The subtotally resected lesion consisted of synaptophysin-immunoreactive lobules of (a) large, polygonal, amphophilic, PAS-positive cells immunoreactive for ACTH, beta-endorphin, alpha melanocyte stimulating hormone (MSH), and keratin (CAM5.2) in some cells showing Crooke hyaline change, (b) less frequent acidophilic, growth hormone (GH) immunoreactive cells, and (c) rare luteinizing hormone (LH) and/or alpha subunit immunopositive cells.
3090 18551299 Also conspicuous were smaller cells resembling Rathke-type epithelium forming rosettes to sizable glands immunoreactive for EMA, keratin, S-100 protein, galectin-3 and rarely for synaptophysin and/or one of the above-noted adenohypophysial hormones.
3091 18551299 Transcription factors, including Neuro-D1 and Pit-1, were present in ACTH- and GH-producing cells, respectively, but only in occasional Rathke-type cells.
3092 18753263 Among the neuropeptides analyzed [including oxytocin, vasopressin, thyrotropin-releasing hormone, and corticotropin-releasing factor (CRF)], FosB was only identified in CRF-positive neurons.
3093 18971258 At the termination of the experiment, hypothalamic mRNA expression levels of neuropeptide Y (NPY), agouti-related protein (AGRP), proopiomelanocortin (POMC), cocaine- and amphetamine-regulated transcript (CART), orexin, brain-derived neurotropic factor (BDNF), phosphatase with tensin homology (Pten), melanocortin-3 receptor (MC3R), and NPY-Y1R were determined.
3094 18971258 Gene expression profiles identified exercise as having a significant effect on hypothalamic POMC, orexin, and MC3R levels.
3095 18971258 Genotype had a significant effect on AGRP, POMC, CART, and NPY-Y1R, with an exercise and genotype interaction effect on NPY gene expression.
3096 18971258 At the termination of the experiment, hypothalamic mRNA expression levels of neuropeptide Y (NPY), agouti-related protein (AGRP), proopiomelanocortin (POMC), cocaine- and amphetamine-regulated transcript (CART), orexin, brain-derived neurotropic factor (BDNF), phosphatase with tensin homology (Pten), melanocortin-3 receptor (MC3R), and NPY-Y1R were determined.
3097 18971258 Gene expression profiles identified exercise as having a significant effect on hypothalamic POMC, orexin, and MC3R levels.
3098 18971258 Genotype had a significant effect on AGRP, POMC, CART, and NPY-Y1R, with an exercise and genotype interaction effect on NPY gene expression.
3099 18971258 At the termination of the experiment, hypothalamic mRNA expression levels of neuropeptide Y (NPY), agouti-related protein (AGRP), proopiomelanocortin (POMC), cocaine- and amphetamine-regulated transcript (CART), orexin, brain-derived neurotropic factor (BDNF), phosphatase with tensin homology (Pten), melanocortin-3 receptor (MC3R), and NPY-Y1R were determined.
3100 18971258 Gene expression profiles identified exercise as having a significant effect on hypothalamic POMC, orexin, and MC3R levels.
3101 18971258 Genotype had a significant effect on AGRP, POMC, CART, and NPY-Y1R, with an exercise and genotype interaction effect on NPY gene expression.
3102 19026699 Based on the reported anti-inflammatory and anti-stress responses by corticotropin-releasing factor (CRF) receptor signaling, endogenous CRF receptor agonists, CRF, urocortin (UCN) I and its related peptides, may play protective roles against cardiovascular stresses via the CRF receptor signaling.
3103 19026699 In addition, due to the possible involvement of CRF receptor signaling in the effects of statin on endothelial cells, the effects of pitavastatin on the expression of UCN-related peptides in HAECs were also evaluated.
3104 19026699 HAECs expressed all UCNs, CRF type 1 receptor (CRF-R1), and CRF type 2 (CRF-R2)alpha and CRF-R2beta mRNAs.
3105 19026699 Real time PCR analysis revealed that UCN I mRNA was down-regulated, whereas UCN II mRNA was up-regulated by tumor necrosis factor (TNF)-alpha.
3106 19026699 Selective blockade of CRF-R1 resulted in significant increase in TNF-alpha-induced expression of vascular adhesion molecule-1 at mRNA level and E-selectin at mRNA and protein levels.
3107 19026699 On the contrary, UCN II, CRF-R1, and CRF-R2 mRNAs were markedly increased by co-incubation of pitavastatin and TNF-alpha.
3108 19026699 These facts indicate that CRF-R1 signaling may have protective role against TNF-alpha-induced vascular inflammation.
3109 19026699 In addition, because of up-regulation of CRF-R1 mRNA by pitavastatin with or without TNF-alpha, CRF-R1 may be involved in the vasoprotective effects of pitavastatin.
3110 19039818 We can conclude that cerebrocrast may regulate food intake and body weight through glucose sensing by proopiomelanocortin (POMC) neurons, that are involved in control of glucose homeostasis, stimulation of alpha-melanocyte-stimulating hormone (alpha-MSH) secretion, activation of MC4-Rs and inhibition of neuropeptide Y (NPY) in the ARC of the hypothalamus, affecting the kidney, and causing decreased urine output and water intake.
3111 19059526 Because of the possible relationship between alpha-MSH and obesity, we endeavored to test the hypothesis that higher levels of alpha-MSH in obese patients would correlate with leptin levels and with other markers of obesity.
3112 19059526 Weight, measures of body composition, and diet diaries were obtained; fasting blood was analyzed for alpha-MSH, lipids, glucose, insulin, leptin, and adiponectin.
3113 19059526 Measures of adiposity correlated with insulin and leptin in men and women, and with adiponectin in women. alpha-Melanocyte-stimulating hormone levels did not correlate significantly with any parameter of adiposity or diet composition.
3114 19059526 Because of the possible relationship between alpha-MSH and obesity, we endeavored to test the hypothesis that higher levels of alpha-MSH in obese patients would correlate with leptin levels and with other markers of obesity.
3115 19059526 Weight, measures of body composition, and diet diaries were obtained; fasting blood was analyzed for alpha-MSH, lipids, glucose, insulin, leptin, and adiponectin.
3116 19059526 Measures of adiposity correlated with insulin and leptin in men and women, and with adiponectin in women. alpha-Melanocyte-stimulating hormone levels did not correlate significantly with any parameter of adiposity or diet composition.
3117 19059526 Because of the possible relationship between alpha-MSH and obesity, we endeavored to test the hypothesis that higher levels of alpha-MSH in obese patients would correlate with leptin levels and with other markers of obesity.
3118 19059526 Weight, measures of body composition, and diet diaries were obtained; fasting blood was analyzed for alpha-MSH, lipids, glucose, insulin, leptin, and adiponectin.
3119 19059526 Measures of adiposity correlated with insulin and leptin in men and women, and with adiponectin in women. alpha-Melanocyte-stimulating hormone levels did not correlate significantly with any parameter of adiposity or diet composition.
3120 19150989 Here, we show that BBS proteins are required for leptin receptor (LepR) signaling in the hypothalamus.
3121 19150989 We found that Bbs2(-/-), Bbs4(-/-) and Bbs6(-/-) mice are resistant to the action of leptin to reduce body weight and food intake regardless of serum leptin levels and obesity.
3122 19150989 In addition, activation of hypothalamic STAT3 by leptin is significantly decreased in Bbs2(-/-), Bbs4(-/-) and Bbs6(-/-) mice.
3123 19150989 In contrast, downstream melanocortin receptor signaling is unaffected, indicating that LepR signaling is specifically impaired in Bbs2(-/-), Bbs4(-/-) and Bbs6(-/-) mice.
3124 19150989 Impaired LepR signaling in BBS mice was associated with decreased Pomc gene expression.
3125 19150989 Furthermore, we found that BBS1 protein physically interacts with the LepR and that loss of BBS proteins perturbs LepR trafficking.
3126 19150989 Our data indicate that BBS proteins mediate LepR trafficking and that impaired LepR signaling underlies energy imbalance in BBS.
3127 19279289 In contrast, plasma leptin was only increased by insulin and diet, plasma glucagon and liver glycogen was only affected by insulin and liver triglycerides, and arcuate nucleus proopiomelanocortin mRNA was only influenced by diet.
3128 19337797 Association between variants in the genes for leptin, leptin receptor, and proopiomelanocortin with chronic heart failure in the Czech population.
3129 19337797 The aim of this study was to investigate the possible associations of defined variability in leptin (dbSNP ID rs7799039), proopiomelanocortin (dbSNP ID rs3754860 and dbSNP ID rs1009388), and leptin receptor gene (dbSNP rs1137101) with CHF and evaluate their potential as the CHF susceptibility genes.
3130 19337797 They were genotyped for the leptin (LEP) -2548 G/A, leptin receptor (LEPR) Gln223Arg, and proopiomelanocortin (POMC) RsaI (5'-untranslated region) and C1032G variants (intron 1) using PCR-based methodology.
3131 19337797 Association between variants in the genes for leptin, leptin receptor, and proopiomelanocortin with chronic heart failure in the Czech population.
3132 19337797 The aim of this study was to investigate the possible associations of defined variability in leptin (dbSNP ID rs7799039), proopiomelanocortin (dbSNP ID rs3754860 and dbSNP ID rs1009388), and leptin receptor gene (dbSNP rs1137101) with CHF and evaluate their potential as the CHF susceptibility genes.
3133 19337797 They were genotyped for the leptin (LEP) -2548 G/A, leptin receptor (LEPR) Gln223Arg, and proopiomelanocortin (POMC) RsaI (5'-untranslated region) and C1032G variants (intron 1) using PCR-based methodology.
3134 19337797 Association between variants in the genes for leptin, leptin receptor, and proopiomelanocortin with chronic heart failure in the Czech population.
3135 19337797 The aim of this study was to investigate the possible associations of defined variability in leptin (dbSNP ID rs7799039), proopiomelanocortin (dbSNP ID rs3754860 and dbSNP ID rs1009388), and leptin receptor gene (dbSNP rs1137101) with CHF and evaluate their potential as the CHF susceptibility genes.
3136 19337797 They were genotyped for the leptin (LEP) -2548 G/A, leptin receptor (LEPR) Gln223Arg, and proopiomelanocortin (POMC) RsaI (5'-untranslated region) and C1032G variants (intron 1) using PCR-based methodology.
3137 19362483 The complications included permanent diabetes insipidus, hypocortisolism (including a patient with a coexisting adrenocorticotropic hormone-secreting adenoma), sinusitis and a case of meningitis and intrasellar abscess, one year post-surgery.
3138 19390493 Exposure to uteroplacental insufficiency reduces the expression of signal transducer and activator of transcription 3 and proopiomelanocortin in the hypothalamus of newborn rats.
3139 19390493 Disruption of the signal transducer and activator of transcription 3 (STAT3) in the hypothalamic neurons expressing leptin receptor, results in severe obesity, hyperglycaemia, and hyperinsulinemia.
3140 19390493 Our aim was to investigate the expression of STAT3 and its downstream effector proopiomelanocortin (POMC) in IUGR rats obtained by uterine artery ligation.
3141 19390493 At birth, hypothalamus was dissected and processed to evaluate the expression of STAT3, its phosphorylated form, and POMC.
3142 19390493 STAT3 mRNA, STAT3 protein, phosphorylated STAT3, POMC mRNA, and POMC protein were significantly reduced in IUGR versus sham animals (p < 0.0001, p < 0.05 and p < 0.001, p < 0.01, p < 0.01, respectively).
3143 19390493 Our results suggest that an abnormal intrauterine milieu can affect the hypothalamic expression of STAT3 and POMC at birth, altering the hypothalamic signaling pathways that regulate the energy homeostasis.
3144 19390493 Exposure to uteroplacental insufficiency reduces the expression of signal transducer and activator of transcription 3 and proopiomelanocortin in the hypothalamus of newborn rats.
3145 19390493 Disruption of the signal transducer and activator of transcription 3 (STAT3) in the hypothalamic neurons expressing leptin receptor, results in severe obesity, hyperglycaemia, and hyperinsulinemia.
3146 19390493 Our aim was to investigate the expression of STAT3 and its downstream effector proopiomelanocortin (POMC) in IUGR rats obtained by uterine artery ligation.
3147 19390493 At birth, hypothalamus was dissected and processed to evaluate the expression of STAT3, its phosphorylated form, and POMC.
3148 19390493 STAT3 mRNA, STAT3 protein, phosphorylated STAT3, POMC mRNA, and POMC protein were significantly reduced in IUGR versus sham animals (p < 0.0001, p < 0.05 and p < 0.001, p < 0.01, p < 0.01, respectively).
3149 19390493 Our results suggest that an abnormal intrauterine milieu can affect the hypothalamic expression of STAT3 and POMC at birth, altering the hypothalamic signaling pathways that regulate the energy homeostasis.
3150 19390493 Exposure to uteroplacental insufficiency reduces the expression of signal transducer and activator of transcription 3 and proopiomelanocortin in the hypothalamus of newborn rats.
3151 19390493 Disruption of the signal transducer and activator of transcription 3 (STAT3) in the hypothalamic neurons expressing leptin receptor, results in severe obesity, hyperglycaemia, and hyperinsulinemia.
3152 19390493 Our aim was to investigate the expression of STAT3 and its downstream effector proopiomelanocortin (POMC) in IUGR rats obtained by uterine artery ligation.
3153 19390493 At birth, hypothalamus was dissected and processed to evaluate the expression of STAT3, its phosphorylated form, and POMC.
3154 19390493 STAT3 mRNA, STAT3 protein, phosphorylated STAT3, POMC mRNA, and POMC protein were significantly reduced in IUGR versus sham animals (p < 0.0001, p < 0.05 and p < 0.001, p < 0.01, p < 0.01, respectively).
3155 19390493 Our results suggest that an abnormal intrauterine milieu can affect the hypothalamic expression of STAT3 and POMC at birth, altering the hypothalamic signaling pathways that regulate the energy homeostasis.
3156 19390493 Exposure to uteroplacental insufficiency reduces the expression of signal transducer and activator of transcription 3 and proopiomelanocortin in the hypothalamus of newborn rats.
3157 19390493 Disruption of the signal transducer and activator of transcription 3 (STAT3) in the hypothalamic neurons expressing leptin receptor, results in severe obesity, hyperglycaemia, and hyperinsulinemia.
3158 19390493 Our aim was to investigate the expression of STAT3 and its downstream effector proopiomelanocortin (POMC) in IUGR rats obtained by uterine artery ligation.
3159 19390493 At birth, hypothalamus was dissected and processed to evaluate the expression of STAT3, its phosphorylated form, and POMC.
3160 19390493 STAT3 mRNA, STAT3 protein, phosphorylated STAT3, POMC mRNA, and POMC protein were significantly reduced in IUGR versus sham animals (p < 0.0001, p < 0.05 and p < 0.001, p < 0.01, p < 0.01, respectively).
3161 19390493 Our results suggest that an abnormal intrauterine milieu can affect the hypothalamic expression of STAT3 and POMC at birth, altering the hypothalamic signaling pathways that regulate the energy homeostasis.
3162 19390493 Exposure to uteroplacental insufficiency reduces the expression of signal transducer and activator of transcription 3 and proopiomelanocortin in the hypothalamus of newborn rats.
3163 19390493 Disruption of the signal transducer and activator of transcription 3 (STAT3) in the hypothalamic neurons expressing leptin receptor, results in severe obesity, hyperglycaemia, and hyperinsulinemia.
3164 19390493 Our aim was to investigate the expression of STAT3 and its downstream effector proopiomelanocortin (POMC) in IUGR rats obtained by uterine artery ligation.
3165 19390493 At birth, hypothalamus was dissected and processed to evaluate the expression of STAT3, its phosphorylated form, and POMC.
3166 19390493 STAT3 mRNA, STAT3 protein, phosphorylated STAT3, POMC mRNA, and POMC protein were significantly reduced in IUGR versus sham animals (p < 0.0001, p < 0.05 and p < 0.001, p < 0.01, p < 0.01, respectively).
3167 19390493 Our results suggest that an abnormal intrauterine milieu can affect the hypothalamic expression of STAT3 and POMC at birth, altering the hypothalamic signaling pathways that regulate the energy homeostasis.
3168 19429177 The obtained results suggest that the improvement of insulin sensitivity by agmatine is produced by two mechanisms, stimulation of adrenal gland to enhance beta-endorphin secretion and a direct activation of peripheral I2-imidazoline receptor in tissues, for the amelioration of insulin action.
3169 19449282 LPS significantly increased the serum levels of TNF-alpha and IL-6 in normal and diabetic rats; LPS also dramatically increased the plasma concentrations of corticotropin-releasing hormone (CRH), adrenocorticotropic hormone (ACTH), and corticosterone.
3170 19449282 Both 0.1 and 1 mg/kg MLT doses significantly decreased the serum levels of TNF-alpha and IL-6.
3171 19449282 Significant inhibitory effects of MLT (1 mg/kg) were observed on the plasma concentrations of CRH, ACTH, and corticosterone of the HPA axis.
3172 19449282 LPS significantly increased the serum levels of TNF-alpha and IL-6 in normal and diabetic rats; LPS also dramatically increased the plasma concentrations of corticotropin-releasing hormone (CRH), adrenocorticotropic hormone (ACTH), and corticosterone.
3173 19449282 Both 0.1 and 1 mg/kg MLT doses significantly decreased the serum levels of TNF-alpha and IL-6.
3174 19449282 Significant inhibitory effects of MLT (1 mg/kg) were observed on the plasma concentrations of CRH, ACTH, and corticosterone of the HPA axis.
3175 19525593 Neither adrenocorticotropic hormone (ACTH) nor cortisol levels were adequately increased in response to a mixed intravenous administration of corticotropin-releasing hormone, growth hormone-releasing hormone, thyrotropin-releasing hormone and lutenizing hormone-releasing hormone, although other pituitary hormones were increased adequately.
3176 19565027 Defects in this steroidogenic enzyme, the product of the CYP21A2 gene, cause disruption in the pathway involved in cortisol and aldosterone production and consequently, the accumulation of their steroid precursors as well as a resulting adrenocorticotrophic hormone (ACTH)-driven overproduction of adrenal androgens.
3177 19636197 Adrenocorticotropin-independent Cushing's syndrome in pregnancy related to overexpression of adrenal luteinizing hormone/human chorionic gonadotropin receptors.
3178 19697135 There were 93 nonfunctioning adenomas, 58 growth hormone-secreting, 41 prolactin-secreting, 28 adrenocorticotropin hormone secreting, 7 FSH-LH secreting and 1 thyroid-stimulating hormone-secreting adenomas.
3179 19697135 The remission results for patients with nonfunctioning adenomas was 83% and for functioning adenomas were 76.3% (70.6% for GH hormone-secreting, 85.3% for prolactin hormone-secreting, 71.4% for ACTH hormone-secreting, 85.7% for FSH-LH hormone-secreting and 100% for TSH hormone-secreting), with no recurrence at the time of the last follow-up.
3180 19697135 There were 93 nonfunctioning adenomas, 58 growth hormone-secreting, 41 prolactin-secreting, 28 adrenocorticotropin hormone secreting, 7 FSH-LH secreting and 1 thyroid-stimulating hormone-secreting adenomas.
3181 19697135 The remission results for patients with nonfunctioning adenomas was 83% and for functioning adenomas were 76.3% (70.6% for GH hormone-secreting, 85.3% for prolactin hormone-secreting, 71.4% for ACTH hormone-secreting, 85.7% for FSH-LH hormone-secreting and 100% for TSH hormone-secreting), with no recurrence at the time of the last follow-up.
3182 19767734 The obesity susceptibility gene Cpe links FoxO1 signaling in hypothalamic pro-opiomelanocortin neurons with regulation of food intake.
3183 19767734 Insulin and leptin inhibit food intake through actions in the central nervous system that are partly mediated by the transcription factor FoxO1.
3184 19767734 We show that FoxO1 ablation in pro-opiomelanocortin (Pomc)-expressing neurons in mice (here called Pomc-Foxo1(-/-) mice) increases Carboxypeptidase E (Cpe) expression, resulting in selective increases of alpha-melanocyte-stimulating hormone (alpha-Msh) and carboxy-cleaved beta-endorphin, the products of Cpe-dependent processing of Pomc.
3185 19767734 We show that Cpe expression is downregulated by diet-induced obesity and that FoxO1 deletion offsets the decrease, protecting against weight gain.
3186 19767734 Moreover, moderate Cpe overexpression in the arcuate nucleus phenocopies features of the FoxO1 mutation.
3187 19767734 The obesity susceptibility gene Cpe links FoxO1 signaling in hypothalamic pro-opiomelanocortin neurons with regulation of food intake.
3188 19767734 Insulin and leptin inhibit food intake through actions in the central nervous system that are partly mediated by the transcription factor FoxO1.
3189 19767734 We show that FoxO1 ablation in pro-opiomelanocortin (Pomc)-expressing neurons in mice (here called Pomc-Foxo1(-/-) mice) increases Carboxypeptidase E (Cpe) expression, resulting in selective increases of alpha-melanocyte-stimulating hormone (alpha-Msh) and carboxy-cleaved beta-endorphin, the products of Cpe-dependent processing of Pomc.
3190 19767734 We show that Cpe expression is downregulated by diet-induced obesity and that FoxO1 deletion offsets the decrease, protecting against weight gain.
3191 19767734 Moreover, moderate Cpe overexpression in the arcuate nucleus phenocopies features of the FoxO1 mutation.
3192 19768550 Inferior petrosal sinus ACTH and prolactin responses to CRH in ACTH-dependent Cushing's syndrome: a single centre experience from the United Kingdom.
3193 19768550 The maximal central/peripheral prolactin ratio was noted at 5 min post-CRH, coinciding with the maximal central/peripheral ACTH ratio.
3194 19768550 The intersinus gradient (ISG) of ACTH was paralleled by a consistent ISG of prolactin and in 7 out of 9 patients (with successful bilateral IPSS and unilateral adenomas) the ISG of prolactin correctly lateralized the microadenoma whereas the ISG of ACTH correctly lateralized in 8 out of 9 patients.
3195 19768550 Prolactin measurements do not have superior lateralizing capability compared with ACTH but may be useful in the differential diagnosis of pituitary-driven from EAS.
3196 19768550 Inferior petrosal sinus ACTH and prolactin responses to CRH in ACTH-dependent Cushing's syndrome: a single centre experience from the United Kingdom.
3197 19768550 The maximal central/peripheral prolactin ratio was noted at 5 min post-CRH, coinciding with the maximal central/peripheral ACTH ratio.
3198 19768550 The intersinus gradient (ISG) of ACTH was paralleled by a consistent ISG of prolactin and in 7 out of 9 patients (with successful bilateral IPSS and unilateral adenomas) the ISG of prolactin correctly lateralized the microadenoma whereas the ISG of ACTH correctly lateralized in 8 out of 9 patients.
3199 19768550 Prolactin measurements do not have superior lateralizing capability compared with ACTH but may be useful in the differential diagnosis of pituitary-driven from EAS.
3200 19768550 Inferior petrosal sinus ACTH and prolactin responses to CRH in ACTH-dependent Cushing's syndrome: a single centre experience from the United Kingdom.
3201 19768550 The maximal central/peripheral prolactin ratio was noted at 5 min post-CRH, coinciding with the maximal central/peripheral ACTH ratio.
3202 19768550 The intersinus gradient (ISG) of ACTH was paralleled by a consistent ISG of prolactin and in 7 out of 9 patients (with successful bilateral IPSS and unilateral adenomas) the ISG of prolactin correctly lateralized the microadenoma whereas the ISG of ACTH correctly lateralized in 8 out of 9 patients.
3203 19768550 Prolactin measurements do not have superior lateralizing capability compared with ACTH but may be useful in the differential diagnosis of pituitary-driven from EAS.
3204 19768550 Inferior petrosal sinus ACTH and prolactin responses to CRH in ACTH-dependent Cushing's syndrome: a single centre experience from the United Kingdom.
3205 19768550 The maximal central/peripheral prolactin ratio was noted at 5 min post-CRH, coinciding with the maximal central/peripheral ACTH ratio.
3206 19768550 The intersinus gradient (ISG) of ACTH was paralleled by a consistent ISG of prolactin and in 7 out of 9 patients (with successful bilateral IPSS and unilateral adenomas) the ISG of prolactin correctly lateralized the microadenoma whereas the ISG of ACTH correctly lateralized in 8 out of 9 patients.
3207 19768550 Prolactin measurements do not have superior lateralizing capability compared with ACTH but may be useful in the differential diagnosis of pituitary-driven from EAS.
3208 19813002 Accordingly, the patient was diagnosed as having ACTH-independent macronodular adrenal hyperplasia (AIMAH) with subclinical Cushing's syndrome associated with the aberrant expression of β-adrenergic receptors.
3209 19882253 Hormonal evaluation included 8.00 a.m. cortisol, DHEA-S, ACTH and in hypertensive subjects, plasma renin activity, and serum aldosterone.
3210 19907099 Ghrelin has a stimulating effect on arginine vasopressin (AVP).
3211 19907099 However, it is not known whether GHRP-2, a synthetic ghrelin receptor agonist, also has a stimulating effect on AVP release in men.
3212 19907099 There were no significant differences in hematocrit, blood pressure and plasma osmolality before and after GFRP-2 injection, although significant (p<0.001) peak blood GH, and ACTH and PRL levels were observed 30 and 15 min after GHRP-2 injection with and without fasting, respectively, and the maximal peaks were significantly (p<0.05) higher with fasting than without fasting.
3213 19907099 These results suggest that AVP secretion is not stimulated by the GHRP-2 test both with and without fasting, though GH, ACTH and PRL levels were higher with than without fasting.
3214 19907099 Ghrelin has a stimulating effect on arginine vasopressin (AVP).
3215 19907099 However, it is not known whether GHRP-2, a synthetic ghrelin receptor agonist, also has a stimulating effect on AVP release in men.
3216 19907099 There were no significant differences in hematocrit, blood pressure and plasma osmolality before and after GFRP-2 injection, although significant (p<0.001) peak blood GH, and ACTH and PRL levels were observed 30 and 15 min after GHRP-2 injection with and without fasting, respectively, and the maximal peaks were significantly (p<0.05) higher with fasting than without fasting.
3217 19907099 These results suggest that AVP secretion is not stimulated by the GHRP-2 test both with and without fasting, though GH, ACTH and PRL levels were higher with than without fasting.
3218 19933072 Laboratory work-up revealed panhypopituitarism (central diabetes insipidus; hypothyroidism; and low prolactin, gonadotrophin, and adrenocorticotropic hormone levels), and magnetic resonance imaging confirmed the pituitary and hypothalamic involvement.
3219 19933998 Divergent regulation of energy expenditure and hepatic glucose production by insulin receptor in agouti-related protein and POMC neurons.
3220 19945028 Pituitary abscess is a rare but potentially life-threatening disease and, in 30-50% of patients, anterior pituitary hormone deficiencies or central diabetes insipidus (DI) at onset may be observed: the earliest manifestation being growth hormone deficiency (GHD), followed by follicle-stimulating hormone (FSH)/luteinising hormone (LH), thyroid-stimulating hormone (TSH) and ACTH deficiencies.
3221 19955787 Candidate gene variants for polygenic obesity appear to disrupt pathways involved in the regulation of energy intake and expenditure and include adrenergic receptors, uncoupling proteins, PPARG, POMC, MC4R and a set of single nucleotide polymorphisms in the FTO locus.
3222 20011966 Mutations related to human monogenic obesity have been described in leptin, leptin receptor, proopiomelanocortin, prohormone convertase 1 or melanocortin receptor 4 genes.
3223 20032567 Histological examinations by needle biopsy of liver tumors in S5 and S8 indicated metastatic ACTH-producing NET, which was also confirmed by venous sampling.
3224 20176722 Third-trimester fetuses from mothers on HFD showed increases in proopiomelanocortin mRNA expression, whereas agouti-related protein mRNA and peptide levels were decreased in comparison with CTR fetuses.
3225 20186151 Moreover, the expression of corticotropin (MC2R) and angiotensin II type 1 (AT1R) receptors and 17alpha-hydroxylase in the tumors of these two patients was analyzed by immunohistochemistry.
3226 20186151 In both cases, immunostaining showed weak expression of AT1R and MC2R but strong expression of 17alpha-hydroxylase.
3227 20374961 Direct insulin and leptin action on pro-opiomelanocortin neurons is required for normal glucose homeostasis and fertility.
3228 20374961 Circulating leptin and insulin convey information regarding energy stores to the central nervous system, particularly the hypothalamus.
3229 20374961 Hypothalamic pro-opiomelanocortin (POMC) neurons regulate energy balance and glucose homeostasis and express leptin and insulin receptors.
3230 20374961 However, the physiological significance of concomitant leptin and insulin action on POMC neurons remains to be established.
3231 20374961 Here, we show that mice lacking both leptin and insulin receptors in POMC neurons (Pomc-Cre, Lepr(flox/flox) IR(flox/flox) mice) display systemic insulin resistance, which is distinct from the single deletion of either receptor.
3232 20374961 We conclude that direct action of insulin and leptin on POMC neurons is required to maintain normal glucose homeostasis and reproductive function.
3233 20374961 Direct insulin and leptin action on pro-opiomelanocortin neurons is required for normal glucose homeostasis and fertility.
3234 20374961 Circulating leptin and insulin convey information regarding energy stores to the central nervous system, particularly the hypothalamus.
3235 20374961 Hypothalamic pro-opiomelanocortin (POMC) neurons regulate energy balance and glucose homeostasis and express leptin and insulin receptors.
3236 20374961 However, the physiological significance of concomitant leptin and insulin action on POMC neurons remains to be established.
3237 20374961 Here, we show that mice lacking both leptin and insulin receptors in POMC neurons (Pomc-Cre, Lepr(flox/flox) IR(flox/flox) mice) display systemic insulin resistance, which is distinct from the single deletion of either receptor.
3238 20374961 We conclude that direct action of insulin and leptin on POMC neurons is required to maintain normal glucose homeostasis and reproductive function.
3239 20374961 Direct insulin and leptin action on pro-opiomelanocortin neurons is required for normal glucose homeostasis and fertility.
3240 20374961 Circulating leptin and insulin convey information regarding energy stores to the central nervous system, particularly the hypothalamus.
3241 20374961 Hypothalamic pro-opiomelanocortin (POMC) neurons regulate energy balance and glucose homeostasis and express leptin and insulin receptors.
3242 20374961 However, the physiological significance of concomitant leptin and insulin action on POMC neurons remains to be established.
3243 20374961 Here, we show that mice lacking both leptin and insulin receptors in POMC neurons (Pomc-Cre, Lepr(flox/flox) IR(flox/flox) mice) display systemic insulin resistance, which is distinct from the single deletion of either receptor.
3244 20374961 We conclude that direct action of insulin and leptin on POMC neurons is required to maintain normal glucose homeostasis and reproductive function.
3245 20374961 Direct insulin and leptin action on pro-opiomelanocortin neurons is required for normal glucose homeostasis and fertility.
3246 20374961 Circulating leptin and insulin convey information regarding energy stores to the central nervous system, particularly the hypothalamus.
3247 20374961 Hypothalamic pro-opiomelanocortin (POMC) neurons regulate energy balance and glucose homeostasis and express leptin and insulin receptors.
3248 20374961 However, the physiological significance of concomitant leptin and insulin action on POMC neurons remains to be established.
3249 20374961 Here, we show that mice lacking both leptin and insulin receptors in POMC neurons (Pomc-Cre, Lepr(flox/flox) IR(flox/flox) mice) display systemic insulin resistance, which is distinct from the single deletion of either receptor.
3250 20374961 We conclude that direct action of insulin and leptin on POMC neurons is required to maintain normal glucose homeostasis and reproductive function.
3251 20374961 Direct insulin and leptin action on pro-opiomelanocortin neurons is required for normal glucose homeostasis and fertility.
3252 20374961 Circulating leptin and insulin convey information regarding energy stores to the central nervous system, particularly the hypothalamus.
3253 20374961 Hypothalamic pro-opiomelanocortin (POMC) neurons regulate energy balance and glucose homeostasis and express leptin and insulin receptors.
3254 20374961 However, the physiological significance of concomitant leptin and insulin action on POMC neurons remains to be established.
3255 20374961 Here, we show that mice lacking both leptin and insulin receptors in POMC neurons (Pomc-Cre, Lepr(flox/flox) IR(flox/flox) mice) display systemic insulin resistance, which is distinct from the single deletion of either receptor.
3256 20374961 We conclude that direct action of insulin and leptin on POMC neurons is required to maintain normal glucose homeostasis and reproductive function.
3257 20472052 We evaluated arginine vasopressin (AVP), glucocorticoid receptor (GR), and corticotropin-releasing hormone (CRH) expression with immunohistochemistry (IHC), immunofluorescence, real-time PCR, and Western blot analysis in each treatment group 7 weeks post ADX to assess HPA axis regulatory patterns in connection with type 2 diabetes.
3258 20472052 Additionally, mRNA expression of AVP and CRH receptors (V1aR, V1bR, CRHR1, and CRHR2) was also measured and adrenocorticotropin hormone (ACTH) immunoreactivity was surveyed by IHC to add to data regarding the regulatory mechanism.
3259 20472052 Without the negative feedback system of corticosterone, CRH is highly enhanced and may primarily combine with CRHR1 to stimulate negative feedback through ACTH in the pituitary gland in type 2 diabetic rats with long-term ADX.
3260 20472052 We evaluated arginine vasopressin (AVP), glucocorticoid receptor (GR), and corticotropin-releasing hormone (CRH) expression with immunohistochemistry (IHC), immunofluorescence, real-time PCR, and Western blot analysis in each treatment group 7 weeks post ADX to assess HPA axis regulatory patterns in connection with type 2 diabetes.
3261 20472052 Additionally, mRNA expression of AVP and CRH receptors (V1aR, V1bR, CRHR1, and CRHR2) was also measured and adrenocorticotropin hormone (ACTH) immunoreactivity was surveyed by IHC to add to data regarding the regulatory mechanism.
3262 20472052 Without the negative feedback system of corticosterone, CRH is highly enhanced and may primarily combine with CRHR1 to stimulate negative feedback through ACTH in the pituitary gland in type 2 diabetic rats with long-term ADX.
3263 20493223 In adult handled males (90-days old) we find not only POMC-derived hormones alterations (enhanced basal plasma corticosterone (+91%) and ACTH (+109%)) but also overweight (+5.4%), fasting hyperglycemia (+40%), hypertriglyceridemia (+21%), enhanced brain mRNA expression of hydroxysteroid(11-beta)dehydrogenase type-1 (HSD11B1) (+49%), and decreased mRNA-HSD11B2 (-39%).
3264 20558893 CT scan of the chest showed two nodular lesions in the right lung (S5, S7), while a mild uptake was noted only in S5 lesion by FDG-PET, but positive uptake was only in S7 lesion by somatostatin receptor scintigraphy (SRS).
3265 20558893 Inferior petrosal sinus sampling revealed a gradient of plasma ACTH after CRH stimulation, consistent with the diagnosis of Cushing' s disease.
3266 20558893 This was a diagnostic challenging case with ectopic ACTH syndrome indistinguishable from Cushing' s disease by various endocrine and imaging tests, among which SRS successfully localized the tumor responsible for ectopic ACTH secretion.
3267 20558893 CT scan of the chest showed two nodular lesions in the right lung (S5, S7), while a mild uptake was noted only in S5 lesion by FDG-PET, but positive uptake was only in S7 lesion by somatostatin receptor scintigraphy (SRS).
3268 20558893 Inferior petrosal sinus sampling revealed a gradient of plasma ACTH after CRH stimulation, consistent with the diagnosis of Cushing' s disease.
3269 20558893 This was a diagnostic challenging case with ectopic ACTH syndrome indistinguishable from Cushing' s disease by various endocrine and imaging tests, among which SRS successfully localized the tumor responsible for ectopic ACTH secretion.
3270 20626417 Possible interactions between neuropeptide Y (NPY), agouti-related protein (AGRP), α-melanocyte-stimulating hormone (MSH) and corticotropin-releasing hormone (CRH) were evaluated in an in vitro hypothalamic explant system.
3271 20626417 Incubation of hypothalamic explants with 0.4, 4 and 40 nmol/L CART (55-102) for 45 min significantly increased NPY IR, whereas exposure of explants to 4 nmol/L CART (55-102) increased AGRP IR and CRH IR.
3272 20668022 At P16, LL DIO neonates had increased arcuate nucleus (ARC) binding of leptin to its extracellular receptors and at P28 an associated increase of their agouti-related peptide and alpha-MSH axonal projections to the paraventricular nucleus.
3273 20668022 Reduced body weight persisted and was associated with increased ARC leptin receptor binding and sensitivity to the anorectic effects of leptin, reduced adiposity, and enhanced insulin sensitivity in LL DIO rats fed chow until 10 wk of age.
3274 20694162 Recently, we serendipitously discovered that mice with the deficiency of the enzyme prolylcarboxypeptidase (PRCP) have elevated alpha-melanocyte-stimulating hormone (alpha-MSH) levels which lead to decreased food intake and weight loss.
3275 20694162 This suggests that PRCP is an endogenous inactivator of alpha-MSH and an appetite stimulant.
3276 20694162 The discovery of a new biological activity of PRCP in the PRCP-deficient mice and studies of alpha-MSH function indicate the importance and complexity of the hypothalamic pro-opiomelanocortin (POMC) system in altering food intake.
3277 20694162 Identifying a role for PRCP in regulating alpha-MSH in the brain may be a critical step in enhancing our understanding of how the brain controls food intake and body weight.
3278 20694162 Recently, we serendipitously discovered that mice with the deficiency of the enzyme prolylcarboxypeptidase (PRCP) have elevated alpha-melanocyte-stimulating hormone (alpha-MSH) levels which lead to decreased food intake and weight loss.
3279 20694162 This suggests that PRCP is an endogenous inactivator of alpha-MSH and an appetite stimulant.
3280 20694162 The discovery of a new biological activity of PRCP in the PRCP-deficient mice and studies of alpha-MSH function indicate the importance and complexity of the hypothalamic pro-opiomelanocortin (POMC) system in altering food intake.
3281 20694162 Identifying a role for PRCP in regulating alpha-MSH in the brain may be a critical step in enhancing our understanding of how the brain controls food intake and body weight.
3282 20694162 Recently, we serendipitously discovered that mice with the deficiency of the enzyme prolylcarboxypeptidase (PRCP) have elevated alpha-melanocyte-stimulating hormone (alpha-MSH) levels which lead to decreased food intake and weight loss.
3283 20694162 This suggests that PRCP is an endogenous inactivator of alpha-MSH and an appetite stimulant.
3284 20694162 The discovery of a new biological activity of PRCP in the PRCP-deficient mice and studies of alpha-MSH function indicate the importance and complexity of the hypothalamic pro-opiomelanocortin (POMC) system in altering food intake.
3285 20694162 Identifying a role for PRCP in regulating alpha-MSH in the brain may be a critical step in enhancing our understanding of how the brain controls food intake and body weight.
3286 20694162 Recently, we serendipitously discovered that mice with the deficiency of the enzyme prolylcarboxypeptidase (PRCP) have elevated alpha-melanocyte-stimulating hormone (alpha-MSH) levels which lead to decreased food intake and weight loss.
3287 20694162 This suggests that PRCP is an endogenous inactivator of alpha-MSH and an appetite stimulant.
3288 20694162 The discovery of a new biological activity of PRCP in the PRCP-deficient mice and studies of alpha-MSH function indicate the importance and complexity of the hypothalamic pro-opiomelanocortin (POMC) system in altering food intake.
3289 20694162 Identifying a role for PRCP in regulating alpha-MSH in the brain may be a critical step in enhancing our understanding of how the brain controls food intake and body weight.
3290 20703054 However, aging did not alter hypothalamic expression of key anorexigens, alpha-MSH and CART.
3291 20713347 Reduction of false-negative results in inferior petrosal sinus sampling with simultaneous prolactin and corticotropin measurement.
3292 20855609 Leptin therapy improves insulin-deficient type 1 diabetes by CNS-dependent mechanisms in mice.
3293 20855609 Leptin monotherapy reverses the deadly consequences and improves several of the metabolic imbalances caused by insulin-deficient type 1 diabetes (T1D) in rodents.
3294 20855609 Here, we report that intracerebroventricular (icv) infusion of leptin reverses lethality and greatly improves hyperglycemia, hyperglucagonemia, hyperketonemia, and polyuria caused by insulin deficiency in mice.
3295 20855609 Also, icv leptin delivery improves expression of the metabolically relevant hypothalamic neuropeptides proopiomelanocortin, neuropeptide Y, and agouti-related peptide in T1D mice.
3296 20855609 Pancreatic β-cell regeneration does not underlie these beneficial effects of leptin, because circulating insulin levels were undetectable at basal levels and following a glucose overload.
3297 20886012 Girls with slowly progressive precocious breast development, who were overweight and had PA (SPPOPA, 6.2-8.2 years, n = 5), overweight PA (6.6-10.8 years, n = 7), and overweight premenarcheal controls (OW-PUB, 10.6-12.8 years, n = 8) underwent hormonal sleep testing and GnRH agonist (GnRHag) and ACTH tests.
3298 20948526 Quantification of proopiomelanocortin (POMC) and neuropeptide-Y (NPY) populations in the arcuate nucleus of the hypothalamus (ARH) of offspring of wild-type vs.
3299 20953065 GH secretion is mainly regulated at the hypothalamus by a dual interplay between growth hormone releasing hormone (GHRH) and somatostatin, which are modulated by various factors.
3300 20953065 We examined the regulatory mechanism of GH secretion in an apparently healthy young man without decreased IGF-1 concentration and nocturnal GH secretion, but who showed low responses to insulin tolerance (ITT) and to GHRP-2 tests.
3301 20953065 However, he had normal secretion of pituitary hormone based on hypothalamic releasing hormone tests combined with CRH, GRH as GHRH, LH-RH and TRH.
3302 20953065 In addition, he had a GH response without paradoxical secretion to TRH stimulation as well as an ACTH response to subcutaneous glucagon stimulation, and AVP secretion responded to 5% hypertonic saline infusion, though it was not adequately stimulated by ITT.
3303 21083697 Several central and peripheral neurohumoral factors (the major ones being the anorectic adipokines leptin and adiponecin and the orexigenic gut hormone ghrelin) acting on the anorectic (pro-opiomelanocortin and cocaine- and amphetamine-regulated transcript) and orexigenic (neuropeptide Y and agouti gene-related protein) neurons regulate energy balance.
3304 21132537 Genotyping of all coding exons of HESX1, LHX4, PROP1, POU1F1 and GH1 genes were performed according to a diagnostic algorithm based on clinical, hormonal and neuroradiological phenotype.
3305 21132537 Among two sibling pairs, one pair that presented with complete anterior pituitary insufficiency, had a compound heterozygous PROP1 gene mutation (codons 117 and 120: exon 3 p Phe 117 Ile (c349 T>A) and p Arg 120 Cys (c358 C>T)) with a phenotype of very late onset ACTH-insufficiency.
3306 21324829 Corticotropin-independent macronodular adrenal hyperplasia associated with insulinoma.
3307 21415158 In ESRD, the neurohormone arginine vasopressin (AVP) may act primarily through V1a and V1b receptors, which promote vasoconstriction, myocardial hypertrophy, and release of adrenocorticotropic hormone.
3308 21536883 Here, we generated germline transgenic zebrafish with overexpression of pituitary tumor transforming gene (PTTG/securin) targeted to the adenohypophyseal proopiomelanocortin (POMC) lineage, which recapitulated early features pathognomonic of corticotroph adenomas, including corticotroph expansion and partial glucocorticoid resistance.
3309 21536883 Molecular analyses in vitro and in vivo showed that R-roscovitine suppresses ACTH expression, induces corticotroph tumor cell senescence and cell cycle exit by up-regulating p27, p21 and p57, and downregulates cyclin E expression.
3310 21536883 Here, we generated germline transgenic zebrafish with overexpression of pituitary tumor transforming gene (PTTG/securin) targeted to the adenohypophyseal proopiomelanocortin (POMC) lineage, which recapitulated early features pathognomonic of corticotroph adenomas, including corticotroph expansion and partial glucocorticoid resistance.
3311 21536883 Molecular analyses in vitro and in vivo showed that R-roscovitine suppresses ACTH expression, induces corticotroph tumor cell senescence and cell cycle exit by up-regulating p27, p21 and p57, and downregulates cyclin E expression.
3312 21565670 A chimeric gene duplication leads to ectopic aldosterone synthase activity in the cortisol-producing zona fasciculata of the adrenal cortex, under the regulation of adrenocorticotropin (ACTH).
3313 21565670 Glucocorticoid suppression of ACTH is the mainstay of treatment; alternative treatments include mineralocorticoid receptor antagonists.
3314 21565670 A chimeric gene duplication leads to ectopic aldosterone synthase activity in the cortisol-producing zona fasciculata of the adrenal cortex, under the regulation of adrenocorticotropin (ACTH).
3315 21565670 Glucocorticoid suppression of ACTH is the mainstay of treatment; alternative treatments include mineralocorticoid receptor antagonists.
3316 21593429 The present study employed a rat model of insulin-induced RHG spanning postnatal days (P)24-28, a neurodevelopmental equivalent of early childhood in humans, to assess the long-term effects on mRNA levels for proteins relevant to the LHPA function and the corticosterone responses to ACTH stimulation of dispersed adrenocortical cells in vitro and restraint stress in vivo at adulthood.
3317 21593429 This early RHG model resulted in a hyporesponsive LHPA axis characterized by impaired corticosterone response, increased hippocampal glucocorticoid and mineralocorticoid receptor (GR and MR), decreased hypothalamic corticotropin-releasing hormone, increased adrenal steroidogenic-acute-regulatory protein and GR, and decreased adrenal MR, melanocortin-type-2 receptor and low-density lipoprotein receptor expression.
3318 21769255 His endocrinological examination revealed low levels of plasma adrenocorticotropic hormone (ACTH) and cortisol, and a normal response of ACTH to the corticotrophin-releasing hormone (CRH) challenge.
3319 21769255 Plasma ACTH did not increase with insulin loading.
3320 21769255 His endocrinological examination revealed low levels of plasma adrenocorticotropic hormone (ACTH) and cortisol, and a normal response of ACTH to the corticotrophin-releasing hormone (CRH) challenge.
3321 21769255 Plasma ACTH did not increase with insulin loading.
3322 21777182 Beside the large family A (rhodopsin-like receptors) and family C GPCR (metabotropic glutamate receptors), the small family B1 GPCR (secretin-like receptors) includes important receptors such as vasoactive intestinal peptide receptors (VPAC), pituitary adenylyl cyclase activating peptide receptor (PAC1R), secretin receptor (SECR), growth hormone releasing factor receptor (GRFR), glucagon receptor (GCGR), glucagon like-peptide 1 and 2 receptors (GLPR), gastric inhibitory peptide receptor (GIPR), parathyroid hormone receptors (PTHR), calcitonin receptors (CTR) and corticotropin-releasing factor receptors (CRFR).
3323 21873226 In addition, leptin-treated animals exhibited marked improvement of insulin sensitivity and glucose homeostasis compared with controls, whereas pancreatic insulin content was 50% higher in leptin-treated animals (P < 0.05).
3324 21873226 These effects coincided with activation of leptin and insulin signaling pathways and down-regulation of the PKR-like endoplasmic reticulum (ER) kinase/eukaryotic translation inhibition factor 2α (PERK-eIF2α) arm of ER stress in liver, skeletal muscle, and adipose tissue as well as increased pro-opiomelanocortin and decreased agouti-related peptide in the hypothalamus.
3325 21873226 In contrast, several markers of inflammation/immune function were elevated with leptin treatment in the same tissues (P < 0.05), suggesting that the leptin-mediated increase of insulin sensitivity was not attributable to decreased inflammation.
3326 21873226 Thus, leptin administration improves insulin sensitivity and normalizes fasting plasma glucose in diabetic UCD-T2DM rats, independent of energy intake, via peripheral and possibly centrally mediated actions, in part by decreasing circulating glucagon and ER stress.
3327 21980299 The most significantly associated SNP (rs539514, P = 5.66×10⁻¹¹) resides in an intronic region of the LMO7 (LIM domain only 7) gene on 13q22.
3328 21980299 The second most significantly associated SNP (rs478222, P = 3.50×10⁻⁹ resides in an intronic region of the EFR3B (protein EFR3 homolog B) gene on 2p23; however, the region of linkage disequilibrium is approximately 800 kb and harbors additional multiple genes, including NCOA1, C2orf79, CENPO, ADCY3, DNAJC27, POMC, and DNMT3A.
3329 21980299 The third most significantly associated SNP (rs924043, P = 8.06×10⁻⁹ lies in an intergenic region on 6q27, where the region of association is approximately 900 kb and harbors multiple genes including WDR27, C6orf120, PHF10, TCTE3, C6orf208, LOC154449, DLL1, FAM120B, PSMB1, TBP, and PCD2.
3330 22057966 Growth hormone deficiency and disturbances in puberty are the most common, but children can also experience ACTH deficiency, diabetes insipidus, central hypothyroidism, and elevated prolactin.
3331 22100407 NPY and MC4R signaling regulate thyroid hormone levels during fasting through both central and peripheral pathways.
3332 22100407 Previous studies demonstrate that leptin communicates nutritional status to the HPT axis through thyrotropin-releasing hormone (TRH) in the paraventricular nucleus (PVN) of the hypothalamus.
3333 22100407 Leptin targets TRH neurons either directly or indirectly via the arcuate nucleus through pro-opiomelanocortin (POMC) and agouti-related peptide/neuropeptide Y (AgRP/NPY) neurons.
3334 22100407 To evaluate the role of these pathways in vivo, we developed double knockout mice that lack both the melanocortin 4 receptor (MC4R) and NPY.
3335 22100407 We show that NPY is required for fasting-induced suppression of Trh expression in the PVN.
3336 22100407 However, both MC4R and NPY are required for activation of hepatic pathways that metabolize T(4) during the fasting response.
3337 22210743 Differential insulin receptor substrate-1 (IRS1)-related modulation of neuropeptide Y and proopiomelanocortin expression in nondiabetic and diabetic IRS2-/- mice.
3338 22210743 Insulin resistance and type 2 diabetes correlate with impaired leptin and insulin signaling.
3339 22210743 Our aim was to analyze how leptin and insulin signaling may differentially affect the expression of hypothalamic neuropeptides regulating food intake and hypothalamic inflammation in diabetic (D) and nondiabetic (ND) IRS2(-/-) mice.
3340 22210743 We analyzed the activation of leptin and insulin targets by Western blotting and their association by immunoprecipitation, as well as the mRNA levels of neuropeptide Y (NPY), proopiomelanocortin, and inflammatory markers by real-time PCR and colocalization of forkhead box protein O1 (FOXO1) and NPY by double immunohistochemistry in the hypothalamus.
3341 22210743 Serum leptin and insulin levels and hypothalamic Janus kinase 2 and signal transducer and activator of transcription factor 3 activation were increased in ND IRS2(-/-) mice.
3342 22210743 IRS1 levels and its association with Janus kinase 2 and p85 and protein kinase B activation were increased in ND IRS2(-/-).
3343 22210743 Increased FOXO1 positively correlated with NPY mRNA levels in D IRS2(-/-) mice, with FOXO1 showing mainly nuclear localization in D IRS2(-/-) and cytoplasmic in ND IRS2(-/-) mice.
3344 22210743 In conclusion, differential activation of these pathways and changes in the expression of NPY and inflammation may exert a protective effect against hypothalamic deregulation of appetite, suggesting that manipulation of these targets could be of interest in the treatment of insulin resistance and type 2 diabetes.
3345 22210743 Differential insulin receptor substrate-1 (IRS1)-related modulation of neuropeptide Y and proopiomelanocortin expression in nondiabetic and diabetic IRS2-/- mice.
3346 22210743 Insulin resistance and type 2 diabetes correlate with impaired leptin and insulin signaling.
3347 22210743 Our aim was to analyze how leptin and insulin signaling may differentially affect the expression of hypothalamic neuropeptides regulating food intake and hypothalamic inflammation in diabetic (D) and nondiabetic (ND) IRS2(-/-) mice.
3348 22210743 We analyzed the activation of leptin and insulin targets by Western blotting and their association by immunoprecipitation, as well as the mRNA levels of neuropeptide Y (NPY), proopiomelanocortin, and inflammatory markers by real-time PCR and colocalization of forkhead box protein O1 (FOXO1) and NPY by double immunohistochemistry in the hypothalamus.
3349 22210743 Serum leptin and insulin levels and hypothalamic Janus kinase 2 and signal transducer and activator of transcription factor 3 activation were increased in ND IRS2(-/-) mice.
3350 22210743 IRS1 levels and its association with Janus kinase 2 and p85 and protein kinase B activation were increased in ND IRS2(-/-).
3351 22210743 Increased FOXO1 positively correlated with NPY mRNA levels in D IRS2(-/-) mice, with FOXO1 showing mainly nuclear localization in D IRS2(-/-) and cytoplasmic in ND IRS2(-/-) mice.
3352 22210743 In conclusion, differential activation of these pathways and changes in the expression of NPY and inflammation may exert a protective effect against hypothalamic deregulation of appetite, suggesting that manipulation of these targets could be of interest in the treatment of insulin resistance and type 2 diabetes.
3353 22223754 This study used sheep to examine the effect of moderate maternal undernutrition (60 d before to 30 d after mating) and twinning to investigate changes in the key metabolic regulators proopiomelanocortin (POMC) and the glucocorticoid receptor (GR) in fetal hypothalami.
3354 22246489 The levels of all the pituitary hormones were elevated in response to a mixture of exogenous corticotrophin-releasing hormone (CRH), luteinizing hormone-releasing hormone (LH-RH), thyrotropin-releasing hormone (TRH), and growth hormone-releasing hormone (GRH).
3355 22246489 However, there was no response of ACTH and GH release to insulin-induced hypoglycemia and no response of LH and FSH release to clomiphene.
3356 22276206 Over-expression of leptin receptors in hypothalamic POMC neurons increases susceptibility to diet-induced obesity.
3357 22276206 Diet-induced obesity (DIO) in rodents is characterized by impaired activation of signal-transducer and activator of transcription 3 (STAT3) by leptin receptors (LepRb) within the hypothalamic arcuate nucleus.
3358 22276206 However, the neuro-chemical identity of the leptin-STAT3 resistant arcuate neurons has not been determined and the underlying mechanisms responsible for development of cellular leptin resistance remain unclear.
3359 22276206 To investigate this, we first measured arcuate gene expression of known key signaling components of the LepRb signaling pathway and tested whether specifically the critical arcuate pro-opiomelanocortin (POMC) neurons are resistant to LepRb-STAT3 signaling in mice given a high-fat-diet (HFD) compared to mice provided a low-fat control diet (LFD).
3360 22276206 We found that leptin-dependent STAT3 phosphorylation was decreased within POMC neurons of HFD mice.
3361 22276206 To investigate whether increased LepRb expression per se in POMC neurons can influence development of DIO and Socs3 expression, we created mice that over-express LepRb selectively in POMC neurons (POMC-LepRb).
3362 22276206 These data show that specifically POMC neurons of DIO mice are resistant to STAT3 activation by leptin, indicating that those cells might play a role in development of DIO.
3363 22276206 Over-expression of leptin receptors in hypothalamic POMC neurons increases susceptibility to diet-induced obesity.
3364 22276206 Diet-induced obesity (DIO) in rodents is characterized by impaired activation of signal-transducer and activator of transcription 3 (STAT3) by leptin receptors (LepRb) within the hypothalamic arcuate nucleus.
3365 22276206 However, the neuro-chemical identity of the leptin-STAT3 resistant arcuate neurons has not been determined and the underlying mechanisms responsible for development of cellular leptin resistance remain unclear.
3366 22276206 To investigate this, we first measured arcuate gene expression of known key signaling components of the LepRb signaling pathway and tested whether specifically the critical arcuate pro-opiomelanocortin (POMC) neurons are resistant to LepRb-STAT3 signaling in mice given a high-fat-diet (HFD) compared to mice provided a low-fat control diet (LFD).
3367 22276206 We found that leptin-dependent STAT3 phosphorylation was decreased within POMC neurons of HFD mice.
3368 22276206 To investigate whether increased LepRb expression per se in POMC neurons can influence development of DIO and Socs3 expression, we created mice that over-express LepRb selectively in POMC neurons (POMC-LepRb).
3369 22276206 These data show that specifically POMC neurons of DIO mice are resistant to STAT3 activation by leptin, indicating that those cells might play a role in development of DIO.
3370 22276206 Over-expression of leptin receptors in hypothalamic POMC neurons increases susceptibility to diet-induced obesity.
3371 22276206 Diet-induced obesity (DIO) in rodents is characterized by impaired activation of signal-transducer and activator of transcription 3 (STAT3) by leptin receptors (LepRb) within the hypothalamic arcuate nucleus.
3372 22276206 However, the neuro-chemical identity of the leptin-STAT3 resistant arcuate neurons has not been determined and the underlying mechanisms responsible for development of cellular leptin resistance remain unclear.
3373 22276206 To investigate this, we first measured arcuate gene expression of known key signaling components of the LepRb signaling pathway and tested whether specifically the critical arcuate pro-opiomelanocortin (POMC) neurons are resistant to LepRb-STAT3 signaling in mice given a high-fat-diet (HFD) compared to mice provided a low-fat control diet (LFD).
3374 22276206 We found that leptin-dependent STAT3 phosphorylation was decreased within POMC neurons of HFD mice.
3375 22276206 To investigate whether increased LepRb expression per se in POMC neurons can influence development of DIO and Socs3 expression, we created mice that over-express LepRb selectively in POMC neurons (POMC-LepRb).
3376 22276206 These data show that specifically POMC neurons of DIO mice are resistant to STAT3 activation by leptin, indicating that those cells might play a role in development of DIO.
3377 22276206 Over-expression of leptin receptors in hypothalamic POMC neurons increases susceptibility to diet-induced obesity.
3378 22276206 Diet-induced obesity (DIO) in rodents is characterized by impaired activation of signal-transducer and activator of transcription 3 (STAT3) by leptin receptors (LepRb) within the hypothalamic arcuate nucleus.
3379 22276206 However, the neuro-chemical identity of the leptin-STAT3 resistant arcuate neurons has not been determined and the underlying mechanisms responsible for development of cellular leptin resistance remain unclear.
3380 22276206 To investigate this, we first measured arcuate gene expression of known key signaling components of the LepRb signaling pathway and tested whether specifically the critical arcuate pro-opiomelanocortin (POMC) neurons are resistant to LepRb-STAT3 signaling in mice given a high-fat-diet (HFD) compared to mice provided a low-fat control diet (LFD).
3381 22276206 We found that leptin-dependent STAT3 phosphorylation was decreased within POMC neurons of HFD mice.
3382 22276206 To investigate whether increased LepRb expression per se in POMC neurons can influence development of DIO and Socs3 expression, we created mice that over-express LepRb selectively in POMC neurons (POMC-LepRb).
3383 22276206 These data show that specifically POMC neurons of DIO mice are resistant to STAT3 activation by leptin, indicating that those cells might play a role in development of DIO.
3384 22276206 Over-expression of leptin receptors in hypothalamic POMC neurons increases susceptibility to diet-induced obesity.
3385 22276206 Diet-induced obesity (DIO) in rodents is characterized by impaired activation of signal-transducer and activator of transcription 3 (STAT3) by leptin receptors (LepRb) within the hypothalamic arcuate nucleus.
3386 22276206 However, the neuro-chemical identity of the leptin-STAT3 resistant arcuate neurons has not been determined and the underlying mechanisms responsible for development of cellular leptin resistance remain unclear.
3387 22276206 To investigate this, we first measured arcuate gene expression of known key signaling components of the LepRb signaling pathway and tested whether specifically the critical arcuate pro-opiomelanocortin (POMC) neurons are resistant to LepRb-STAT3 signaling in mice given a high-fat-diet (HFD) compared to mice provided a low-fat control diet (LFD).
3388 22276206 We found that leptin-dependent STAT3 phosphorylation was decreased within POMC neurons of HFD mice.
3389 22276206 To investigate whether increased LepRb expression per se in POMC neurons can influence development of DIO and Socs3 expression, we created mice that over-express LepRb selectively in POMC neurons (POMC-LepRb).
3390 22276206 These data show that specifically POMC neurons of DIO mice are resistant to STAT3 activation by leptin, indicating that those cells might play a role in development of DIO.
3391 22486586 Treatment with selective 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) inhibitors could be a therapeutic strategy in paediatric patients with manifestations of the metabolic syndrome.
3392 22486586 The effect of 11β-HSD1 treatment in children on bone differentiation and development as well as adrenocorticotropic hormone (ACTH), circulating and local cortisol tissue concentrations, androgens and respective stress response is not yet known.
3393 22592190 A surge of corticotropin and cortisol, 19.4 pmol/L and 712.1 nmol/L respectively, was found on Day 5 when luteinizing hormone, follicle stimulating hormone, and testosterone were subnormal and prolactin was slightly elevated.
3394 22592190 Subsequently, corticotropin and cortisol levels normalized together with normalization of luteinizing hormone, follicle stimulating hormone, anti-diuretic hormone, thyroid stimulating hormone, prolactin, testosterone and thyroid hormone levels.
3395 22592190 A surge of corticotropin and cortisol, 19.4 pmol/L and 712.1 nmol/L respectively, was found on Day 5 when luteinizing hormone, follicle stimulating hormone, and testosterone were subnormal and prolactin was slightly elevated.
3396 22592190 Subsequently, corticotropin and cortisol levels normalized together with normalization of luteinizing hormone, follicle stimulating hormone, anti-diuretic hormone, thyroid stimulating hormone, prolactin, testosterone and thyroid hormone levels.
3397 22663897 CUMS procedure significantly up-regulated corticotropin-releasing factor (CRF)-related peptide urocortin 2 expression and elevated cAMP production, resulting in over-expression of suppressor of cytokine signaling 3 (SOCS3) in hypothalamic arcuate nucleus (ARC) of rats.
3398 22663897 Furthermore, SOCS3 activation blocked insulin signaling pathway through the suppression of insulin receptor substrate 2 (IRS2) phosphotyrosine and phosphatidylinositol-3-kinase (PI3-K) activation in hypothalamic ARC of CUMS rats after high-level of insulin stimulation.
3399 22700769 In addition, a large number of refeeding-activated c-Fos-expressing neurons were observed in the lateral parvocellular subdivision (PVNl) that also contained CTB and were innervated by axon terminals of proopiomelanocortin neurons.
3400 22707647 Other findings included an absent cortisol response to corticotropin stimulation, presence of serum anti-21-hydroxylase antibodies, and mononuclear cell infiltration--consistent with adrenalitis.
3401 22789859 Plasma concentrations of thyroid-stimulating hormone, thyroxine, growth hormone (GH) and insulin-like growth factor-1 were decreased; plasma adrenocorticotropic hormone (ACTH) was slightly elevated and plasma α-melanocyte-stimulating hormone (MSH) was within the reference range.
3402 22790131 Usefulness and limitations of unilateral adrenalectomy for ACTH-independent macronodular adrenal hyperplasia in a patient with poor glycemic control.
3403 22790131 Adrenocorticotropic hormone (ACTH)-independent macronodular adrenal hyperplasia (AIMAH) is a rare disease which causes Cushing's syndrome.
3404 22790131 Usefulness and limitations of unilateral adrenalectomy for ACTH-independent macronodular adrenal hyperplasia in a patient with poor glycemic control.
3405 22790131 Adrenocorticotropic hormone (ACTH)-independent macronodular adrenal hyperplasia (AIMAH) is a rare disease which causes Cushing's syndrome.
3406 22796301 Genetic variants in the transcription factor 7-like 2(Tcf7l2) gene have been found to confer a significant risk of type 2 diabetes and attenuated insulin secretion.
3407 22796301 TCF was also found co-localized with peptides that regulate energy homeostasis including AgRP, POMC and NPY.
3408 22796301 TCF7l2, some variants of which have been shown to impair GLP-1-induced insulin secretion, was also found co-localize with GLP-1 in adult TCF wild type progeny.
3409 22848202 In animal studies this has been linked with abnormal hypothalamic gene expression of appetite regulators such as downregulation of NPY and POMC in the arcuate nucleus of the hypothalamus.
3410 22941110 We found that Rho-kinase 1 (ROCK1) regulates leptin action on body weight homeostasis by activating JAK2, an initial trigger of leptin receptor signaling.
3411 22941110 Leptin promoted the physical interaction of JAK2 and ROCK1, thereby increasing phosphorylation of JAK2 and downstream activation of Stat3 and FOXO1.
3412 22941110 Mice lacking ROCK1 in either pro-opiomelanocortin (POMC) or agouti-related protein neurons, mediators of leptin action, displayed obesity and impaired leptin sensitivity.
3413 22941110 Notably, ROCK1 was a specific mediator of leptin, but not insulin, regulation of POMC neuronal activity.
3414 22941110 We found that Rho-kinase 1 (ROCK1) regulates leptin action on body weight homeostasis by activating JAK2, an initial trigger of leptin receptor signaling.
3415 22941110 Leptin promoted the physical interaction of JAK2 and ROCK1, thereby increasing phosphorylation of JAK2 and downstream activation of Stat3 and FOXO1.
3416 22941110 Mice lacking ROCK1 in either pro-opiomelanocortin (POMC) or agouti-related protein neurons, mediators of leptin action, displayed obesity and impaired leptin sensitivity.
3417 22941110 Notably, ROCK1 was a specific mediator of leptin, but not insulin, regulation of POMC neuronal activity.
3418 22966070 Tub has a key role in insulin and leptin signaling and action in vivo in hypothalamic nuclei.
3419 22966070 In the current study, we investigated whether insulin, leptin, and obesity can modulate Tub in vivo in hypothalamic nuclei, and we investigated possible consequences on energy balance, neuropeptide expression, and hepatic glucose metabolism.
3420 22966070 Food intake, metabolic characteristics, signaling proteins, and neuropeptide expression were measured in response to fasting and refeeding, intracerebroventricular insulin and leptin, and Tub antisense oligonucleotide (ASO).
3421 22966070 Tub is a substrate of insulin receptor tyrosine kinase (IRTK) and leptin receptor (LEPR)-Janus kinase 2 (JAK2) in hypothalamic nuclei.
3422 22966070 After leptin or insulin stimulation, Tub translocates to the nucleus.
3423 22966070 Inhibition of Tub expression in hypothalamus by ASO increased food intake, fasting blood glucose, and hepatic glucose output, decreased O(2) consumption, and blunted the effect of insulin or leptin on proopiomelanocortin, thyroid-releasing hormone, melanin-concentrating hormone, and orexin expression.
3424 22966070 In hypothalamus of mice administered a high-fat diet, there is a reduction in leptin and insulin-induced Tub-p-tyr and nuclear translocation, which is reversed by reducing protein tyrosine phosphatase 1B expression.
3425 22966070 These results indicate that Tub has a key role in the control of insulin and leptin effects on food intake, and the modulation of Tub may contribute to insulin and leptin resistance in DIO mice.
3426 23011322 For functional adenoma, remission rates were 30/41 (73%) for GH-secreting, 12/12 (100%) for ACTH-secreting, and 8/17 (47%) for prolactin-secreting tumors.
3427 23045190 Postnatal treatment with the opioid receptor antagonist naloxone prevents some alterations, moreover the treatment with antisense (AS; AS vs proopiomelanocortin mRNA) draws all parameters to control levels, thus showing that some alterations are bound to endogenous opioid-system hyper-functioning, while others depend on ACTH-corticosterone system hyper-functioning.
3428 23064477 Combined anterior pituitary stimulation test and insulin-induced hypoglycemic test confirmed the diagnosis of panhypopituitarism, including adrenocortical insufficiency due to pituitary and hypothalamic dysfunction by stalk compression.
3429 23064477 Synthesis of immature ACTH is generally thought to be due to impaired processing of the precursor proopiomelanocortin (POMC) through activation of prohormone convertase (PC)-1 by CRH.
3430 23112343 The principal effectors of the stress system are corticotropin-releasing hormone (CRH), arginine vasopressin, the proopiomelanocortin-derived peptides α-melanocyte-stimulating hormone and β-endorphin, the glucocorticoids, and the catecholamines norepinephrine and epinephrine.
3431 23119079 Female mice lacking leptin and insulin receptors in pro-opiomelanocortin neurons (IR/LepR(POMC) mice) and littermate controls were evaluated for estrous cyclicity, ovarian and adipose tissue morphology, and body composition by QMR and CT scan.
3432 23119079 Forty-five percent of IR/LepR(POMC) mice showed reduced or absent ovulation.
3433 23119079 IR/LepR(POMC) mice also had increased fat mass and adipocyte hypertrophy.
3434 23119079 This report is the first to show the presence of inflammation in IR/LepR(POMC) mice, which develop a PCOS-like phenotype.
3435 23119079 Thus, IR/LepR(POMC) mice may serve as a new mouse model to clarify the involvement of adipose and liver tissue in the pathogenesis and etiology of PCOS, allowing more targeted research on the development of PCOS and potential therapeutic interventions.
3436 23119079 Female mice lacking leptin and insulin receptors in pro-opiomelanocortin neurons (IR/LepR(POMC) mice) and littermate controls were evaluated for estrous cyclicity, ovarian and adipose tissue morphology, and body composition by QMR and CT scan.
3437 23119079 Forty-five percent of IR/LepR(POMC) mice showed reduced or absent ovulation.
3438 23119079 IR/LepR(POMC) mice also had increased fat mass and adipocyte hypertrophy.
3439 23119079 This report is the first to show the presence of inflammation in IR/LepR(POMC) mice, which develop a PCOS-like phenotype.
3440 23119079 Thus, IR/LepR(POMC) mice may serve as a new mouse model to clarify the involvement of adipose and liver tissue in the pathogenesis and etiology of PCOS, allowing more targeted research on the development of PCOS and potential therapeutic interventions.
3441 23119079 Female mice lacking leptin and insulin receptors in pro-opiomelanocortin neurons (IR/LepR(POMC) mice) and littermate controls were evaluated for estrous cyclicity, ovarian and adipose tissue morphology, and body composition by QMR and CT scan.
3442 23119079 Forty-five percent of IR/LepR(POMC) mice showed reduced or absent ovulation.
3443 23119079 IR/LepR(POMC) mice also had increased fat mass and adipocyte hypertrophy.
3444 23119079 This report is the first to show the presence of inflammation in IR/LepR(POMC) mice, which develop a PCOS-like phenotype.
3445 23119079 Thus, IR/LepR(POMC) mice may serve as a new mouse model to clarify the involvement of adipose and liver tissue in the pathogenesis and etiology of PCOS, allowing more targeted research on the development of PCOS and potential therapeutic interventions.
3446 23119079 Female mice lacking leptin and insulin receptors in pro-opiomelanocortin neurons (IR/LepR(POMC) mice) and littermate controls were evaluated for estrous cyclicity, ovarian and adipose tissue morphology, and body composition by QMR and CT scan.
3447 23119079 Forty-five percent of IR/LepR(POMC) mice showed reduced or absent ovulation.
3448 23119079 IR/LepR(POMC) mice also had increased fat mass and adipocyte hypertrophy.
3449 23119079 This report is the first to show the presence of inflammation in IR/LepR(POMC) mice, which develop a PCOS-like phenotype.
3450 23119079 Thus, IR/LepR(POMC) mice may serve as a new mouse model to clarify the involvement of adipose and liver tissue in the pathogenesis and etiology of PCOS, allowing more targeted research on the development of PCOS and potential therapeutic interventions.
3451 23119079 Female mice lacking leptin and insulin receptors in pro-opiomelanocortin neurons (IR/LepR(POMC) mice) and littermate controls were evaluated for estrous cyclicity, ovarian and adipose tissue morphology, and body composition by QMR and CT scan.
3452 23119079 Forty-five percent of IR/LepR(POMC) mice showed reduced or absent ovulation.
3453 23119079 IR/LepR(POMC) mice also had increased fat mass and adipocyte hypertrophy.
3454 23119079 This report is the first to show the presence of inflammation in IR/LepR(POMC) mice, which develop a PCOS-like phenotype.
3455 23119079 Thus, IR/LepR(POMC) mice may serve as a new mouse model to clarify the involvement of adipose and liver tissue in the pathogenesis and etiology of PCOS, allowing more targeted research on the development of PCOS and potential therapeutic interventions.
3456 23161869 AgRP innervation onto POMC neurons increases with age and is accelerated with chronic high-fat feeding in male mice.
3457 23161869 Hypothalamic neurons coexpressing agouti-related peptide (AgRP) and neuropeptide Y are direct leptin targets.
3458 23161869 We show here that AgRP and neuropeptide Y innvervation onto POMC neurons increases dramatically with age in male mice.
3459 23161869 Neuronal activity is significantly attenuated in POMC neurons that receive a high density of AgRP puncta.
3460 23161869 These high-density AgRP inputs correlate with leptin levels in normal mice and are nearly absent in mice lacking leptin.
3461 23161869 The progression of increased AgRP innervation onto POMC somas is accelerated in hyperleptinemic, diet-induced obese mice.
3462 23161869 Together our study suggests that modulation of hypothalamic AgRP innervation constitutes one mechanism to counter the effects of the age-associated rise in leptin levels, thus sustaining body weight and fat mass at an elevated level in adulthood.
3463 23161869 AgRP innervation onto POMC neurons increases with age and is accelerated with chronic high-fat feeding in male mice.
3464 23161869 Hypothalamic neurons coexpressing agouti-related peptide (AgRP) and neuropeptide Y are direct leptin targets.
3465 23161869 We show here that AgRP and neuropeptide Y innvervation onto POMC neurons increases dramatically with age in male mice.
3466 23161869 Neuronal activity is significantly attenuated in POMC neurons that receive a high density of AgRP puncta.
3467 23161869 These high-density AgRP inputs correlate with leptin levels in normal mice and are nearly absent in mice lacking leptin.
3468 23161869 The progression of increased AgRP innervation onto POMC somas is accelerated in hyperleptinemic, diet-induced obese mice.
3469 23161869 Together our study suggests that modulation of hypothalamic AgRP innervation constitutes one mechanism to counter the effects of the age-associated rise in leptin levels, thus sustaining body weight and fat mass at an elevated level in adulthood.
3470 23161869 AgRP innervation onto POMC neurons increases with age and is accelerated with chronic high-fat feeding in male mice.
3471 23161869 Hypothalamic neurons coexpressing agouti-related peptide (AgRP) and neuropeptide Y are direct leptin targets.
3472 23161869 We show here that AgRP and neuropeptide Y innvervation onto POMC neurons increases dramatically with age in male mice.
3473 23161869 Neuronal activity is significantly attenuated in POMC neurons that receive a high density of AgRP puncta.
3474 23161869 These high-density AgRP inputs correlate with leptin levels in normal mice and are nearly absent in mice lacking leptin.
3475 23161869 The progression of increased AgRP innervation onto POMC somas is accelerated in hyperleptinemic, diet-induced obese mice.
3476 23161869 Together our study suggests that modulation of hypothalamic AgRP innervation constitutes one mechanism to counter the effects of the age-associated rise in leptin levels, thus sustaining body weight and fat mass at an elevated level in adulthood.
3477 23161869 AgRP innervation onto POMC neurons increases with age and is accelerated with chronic high-fat feeding in male mice.
3478 23161869 Hypothalamic neurons coexpressing agouti-related peptide (AgRP) and neuropeptide Y are direct leptin targets.
3479 23161869 We show here that AgRP and neuropeptide Y innvervation onto POMC neurons increases dramatically with age in male mice.
3480 23161869 Neuronal activity is significantly attenuated in POMC neurons that receive a high density of AgRP puncta.
3481 23161869 These high-density AgRP inputs correlate with leptin levels in normal mice and are nearly absent in mice lacking leptin.
3482 23161869 The progression of increased AgRP innervation onto POMC somas is accelerated in hyperleptinemic, diet-induced obese mice.
3483 23161869 Together our study suggests that modulation of hypothalamic AgRP innervation constitutes one mechanism to counter the effects of the age-associated rise in leptin levels, thus sustaining body weight and fat mass at an elevated level in adulthood.
3484 23169787 However, there was no effect of insulin treatment on total food intake nor on hypothalamic neuropeptide Y or proopiomelanocortin mRNA expression, and insulin-treated animals did not become insulin-resistant.
3485 23196783 We investigated whether common GR genes (ER22/23EK, N363S, Bcl I, and 9β) and adrenocorticotropin receptor promoter polymorphisms influence susceptibility for unilateral adrenal incidentaloma (AI), plus GR and Hsp expression in tumorous (n = 19), peritumorous (n = 13) and normal adrenocortical (n = 11) tissues.
3486 23228667 One of the medical treatments used in Cushing's disease is the somatostatin analogue pasireotide, which acts on adrenocorticotropic hormone (ACTH) secretion by the pituitary.
3487 23235923 Control of CYP11B2/CYP11B1 expression ratio and consequences for the zonation of the adrenal cortex.
3488 23235923 Access of corticotropin to glucocorticoid synthesis in adrenocortical cells is provided by the expression of the ACTH receptor (MC2R).
3489 23235923 Activation of the MC2R increases stimulatory G-protein, adenylyl cyclase, and protein kinase A (PKA) activities.
3490 23235923 Sensitivity of adrenocortical cells to renin/angiotensin-2 is conferred by the expression of the inhibitory G-protein-linked angiotensin-2 type 1 receptor (AT1R) that additionally associates to the phospholipase C-activating G-protein q.
3491 23235923 The AT1R is connected to the adrenal potassium sensory system and regulates calcium influx as well as phospholipase C-β (PLC-β) and thus calmodulin kinase-dependent transcription of steroidogenic enzymes.
3492 23235923 While AT1R signaling suppresses the influence of corticotropin on the generation of cyclic adenosine monophosphate, the expression of the AT1R and its associated enzyme activities are under the control of glucocorticoids.
3493 23235923 Control of CYP11B2/CYP11B1 expression ratio and consequences for the zonation of the adrenal cortex.
3494 23235923 Access of corticotropin to glucocorticoid synthesis in adrenocortical cells is provided by the expression of the ACTH receptor (MC2R).
3495 23235923 Activation of the MC2R increases stimulatory G-protein, adenylyl cyclase, and protein kinase A (PKA) activities.
3496 23235923 Sensitivity of adrenocortical cells to renin/angiotensin-2 is conferred by the expression of the inhibitory G-protein-linked angiotensin-2 type 1 receptor (AT1R) that additionally associates to the phospholipase C-activating G-protein q.
3497 23235923 The AT1R is connected to the adrenal potassium sensory system and regulates calcium influx as well as phospholipase C-β (PLC-β) and thus calmodulin kinase-dependent transcription of steroidogenic enzymes.
3498 23235923 While AT1R signaling suppresses the influence of corticotropin on the generation of cyclic adenosine monophosphate, the expression of the AT1R and its associated enzyme activities are under the control of glucocorticoids.
3499 23386726 Modulation of AgRP-neuronal function by SOCS3 as an initiating event in diet-induced hypothalamic leptin resistance.
3500 23386726 We show that agouti-related protein (AgRP)-expressing neurons precede proopiomelanocortin neurons in developing diet-induced cellular leptin resistance.
3501 23386726 High-fat diet-induced up-regulation of suppressor of cytokine signaling-3 (SOCS3) occurs in AgRP neurons before proopiomelanocortin and other hypothalamic neurons.
3502 23386726 SOCS3 expression in AgRP neurons increases after 2 d of high-fat feeding, but reduces after switching to a low-fat diet for 1 d.
3503 23386726 Consistently, transgenic overexpression of SOCS3 in AgRP neurons produces metabolic phenotypes resembling those observed after short-term high-fat feeding.
3504 23386726 AgRP neurons are more responsive to low levels of circulating leptin, but they are also more prone to development of leptin resistance in response to a small increase in blood leptin concentrations.
3505 23386726 Furthermore, modulation of SOCS3 expression in AgRP neurons may play a dynamic and physiological role in metabolic fine tuning in response to short-term changes of nutritional status.
3506 23386726 Modulation of AgRP-neuronal function by SOCS3 as an initiating event in diet-induced hypothalamic leptin resistance.
3507 23386726 We show that agouti-related protein (AgRP)-expressing neurons precede proopiomelanocortin neurons in developing diet-induced cellular leptin resistance.
3508 23386726 High-fat diet-induced up-regulation of suppressor of cytokine signaling-3 (SOCS3) occurs in AgRP neurons before proopiomelanocortin and other hypothalamic neurons.
3509 23386726 SOCS3 expression in AgRP neurons increases after 2 d of high-fat feeding, but reduces after switching to a low-fat diet for 1 d.
3510 23386726 Consistently, transgenic overexpression of SOCS3 in AgRP neurons produces metabolic phenotypes resembling those observed after short-term high-fat feeding.
3511 23386726 AgRP neurons are more responsive to low levels of circulating leptin, but they are also more prone to development of leptin resistance in response to a small increase in blood leptin concentrations.
3512 23386726 Furthermore, modulation of SOCS3 expression in AgRP neurons may play a dynamic and physiological role in metabolic fine tuning in response to short-term changes of nutritional status.
3513 23425648 Adrenocorticotropic hormone independent macronodular adrenal hyperplasia due to aberrant receptor expression: is medical treatment always an option?
3514 23553410 Routine haematology, serum biochemistry, urinalysis (including culture), total T4 and urine creatinine:cortisol ratio were unremarkable, but markedly increased insulin-like growth factor-1 concentration was identified and a pituitary mass was subsequently documented.
3515 23553410 A double-pituitary adenoma comprising a discrete somatotroph adenoma and a separate plurihormonal adenoma (positive immunoreactivity for ACTH, melanocyte-stimulating hormone and follicle-stimulating hormone) was identified on post-mortem examination.
3516 23565411 We report perhaps for the first time, TSH, GH, adrenocorticotrophic hormone (ACTH) and gonadotropins secreting pituitary macroadenoma diagnosed in a 40 year lady presenting with features of thyrotoxicosis for 5 months, amenorrhea for 3 months and newly diagnosed diabetes and hypertension for 2 months along with headache, nausea, and vomiting, who had acromegaloid habitus, grade-II goitre, increased uptake on Technitium-99 pertechnate thyroid scan (4.1%; normal: 0.24-3.34%), with increased T3 (5.98 pg/ ml; 1.5-4.1), increased T4 (2.34 ng/dl; 0.9-1.8), inappropriately high TSH (2.32 μIU/ml; 0.4-4.2), insulin like growth factor-1 (711 ng/ ml; 109-264), non-suppressed post-glucose GH (15.9 ng/ml; <1 ng/ml), normal estradiol (52 pg/ml; 21-251), inappropriately high luteinizing hormone (53.5 mIU/ml; 1.1-11.6), inappropriately high follicle stimulating hormone (59 mIU/ml; 3-14.4), non-suppressed overnight dexamethasone cortisol (5.8 mcg/dl; <2), elevated ACTH (58 pg/ml 5-15), withdrawal bleed on progestrogen challenge, bitemporal hemianopia on automated perimetry and pituitary macroadenoma on MRI imaging of sella.
3517 23565490 As a result of sustained leptin insufficiency, the hypothalamic restraint on pancreatic insulin secretion is lost.
3518 23565490 Additionally injection of rAVV-LEP into the hypothalamus suppressed the expression of orexigenic neuropeptide Y (NPY) and enhanced anorexigenic pro-opiomelanocortin (POMC) in the arcuate nucleus (ARC) in rats.
3519 23590931 The review will discusses these issues and the involvement of the whole HPA axis and its separate molecules (glucocorticoids, adrenocorticotropin, corticotropin-releasing hormone) in food intake regulation under stress.
3520 23640796 Pro-opiomelanocortin (POMC) and agouti-related protein (AGRP) neurons in the hypothalamus regulate various aspects of energy homeostasis and metabolism.
3521 23640796 POMC and AGRP neurons, respectively, agonize and antagonize melanocortin receptors on their common downstream neurons.
3522 23640796 Whereas AGRP neurons are mostly GABAergic, surprisingly, only a small population of POMC neurons has been found to be glutamatergic, and a significantly larger subpopulation to be GABAergic.
3523 23640796 To further examine amino acid phenotypes of POMC neurons, we studied mRNA expression for the glutamatergic marker, type 2 vesicular glutamate transporter (VGLUT2), and the GABA synthetic enzyme, glutamic acid decarboxylase 67 (GAD67), in POMC neurons of both rats and mice by using in situ hybridization techniques.
3524 23640796 In rats, approximately 58% of POMC neurons were labeled for VGLUT2 and 37% for GAD67 mRNA.
3525 23640796 In mice, approximately 43% of POMC neurons contained VGLUT2, and 54% contained GAD67 mRNA.
3526 23640796 Pro-opiomelanocortin (POMC) and agouti-related protein (AGRP) neurons in the hypothalamus regulate various aspects of energy homeostasis and metabolism.
3527 23640796 POMC and AGRP neurons, respectively, agonize and antagonize melanocortin receptors on their common downstream neurons.
3528 23640796 Whereas AGRP neurons are mostly GABAergic, surprisingly, only a small population of POMC neurons has been found to be glutamatergic, and a significantly larger subpopulation to be GABAergic.
3529 23640796 To further examine amino acid phenotypes of POMC neurons, we studied mRNA expression for the glutamatergic marker, type 2 vesicular glutamate transporter (VGLUT2), and the GABA synthetic enzyme, glutamic acid decarboxylase 67 (GAD67), in POMC neurons of both rats and mice by using in situ hybridization techniques.
3530 23640796 In rats, approximately 58% of POMC neurons were labeled for VGLUT2 and 37% for GAD67 mRNA.
3531 23640796 In mice, approximately 43% of POMC neurons contained VGLUT2, and 54% contained GAD67 mRNA.
3532 23640796 Pro-opiomelanocortin (POMC) and agouti-related protein (AGRP) neurons in the hypothalamus regulate various aspects of energy homeostasis and metabolism.
3533 23640796 POMC and AGRP neurons, respectively, agonize and antagonize melanocortin receptors on their common downstream neurons.
3534 23640796 Whereas AGRP neurons are mostly GABAergic, surprisingly, only a small population of POMC neurons has been found to be glutamatergic, and a significantly larger subpopulation to be GABAergic.
3535 23640796 To further examine amino acid phenotypes of POMC neurons, we studied mRNA expression for the glutamatergic marker, type 2 vesicular glutamate transporter (VGLUT2), and the GABA synthetic enzyme, glutamic acid decarboxylase 67 (GAD67), in POMC neurons of both rats and mice by using in situ hybridization techniques.
3536 23640796 In rats, approximately 58% of POMC neurons were labeled for VGLUT2 and 37% for GAD67 mRNA.
3537 23640796 In mice, approximately 43% of POMC neurons contained VGLUT2, and 54% contained GAD67 mRNA.
3538 23640796 Pro-opiomelanocortin (POMC) and agouti-related protein (AGRP) neurons in the hypothalamus regulate various aspects of energy homeostasis and metabolism.
3539 23640796 POMC and AGRP neurons, respectively, agonize and antagonize melanocortin receptors on their common downstream neurons.
3540 23640796 Whereas AGRP neurons are mostly GABAergic, surprisingly, only a small population of POMC neurons has been found to be glutamatergic, and a significantly larger subpopulation to be GABAergic.
3541 23640796 To further examine amino acid phenotypes of POMC neurons, we studied mRNA expression for the glutamatergic marker, type 2 vesicular glutamate transporter (VGLUT2), and the GABA synthetic enzyme, glutamic acid decarboxylase 67 (GAD67), in POMC neurons of both rats and mice by using in situ hybridization techniques.
3542 23640796 In rats, approximately 58% of POMC neurons were labeled for VGLUT2 and 37% for GAD67 mRNA.
3543 23640796 In mice, approximately 43% of POMC neurons contained VGLUT2, and 54% contained GAD67 mRNA.
3544 23640796 Pro-opiomelanocortin (POMC) and agouti-related protein (AGRP) neurons in the hypothalamus regulate various aspects of energy homeostasis and metabolism.
3545 23640796 POMC and AGRP neurons, respectively, agonize and antagonize melanocortin receptors on their common downstream neurons.
3546 23640796 Whereas AGRP neurons are mostly GABAergic, surprisingly, only a small population of POMC neurons has been found to be glutamatergic, and a significantly larger subpopulation to be GABAergic.
3547 23640796 To further examine amino acid phenotypes of POMC neurons, we studied mRNA expression for the glutamatergic marker, type 2 vesicular glutamate transporter (VGLUT2), and the GABA synthetic enzyme, glutamic acid decarboxylase 67 (GAD67), in POMC neurons of both rats and mice by using in situ hybridization techniques.
3548 23640796 In rats, approximately 58% of POMC neurons were labeled for VGLUT2 and 37% for GAD67 mRNA.
3549 23640796 In mice, approximately 43% of POMC neurons contained VGLUT2, and 54% contained GAD67 mRNA.
3550 23640796 Pro-opiomelanocortin (POMC) and agouti-related protein (AGRP) neurons in the hypothalamus regulate various aspects of energy homeostasis and metabolism.
3551 23640796 POMC and AGRP neurons, respectively, agonize and antagonize melanocortin receptors on their common downstream neurons.
3552 23640796 Whereas AGRP neurons are mostly GABAergic, surprisingly, only a small population of POMC neurons has been found to be glutamatergic, and a significantly larger subpopulation to be GABAergic.
3553 23640796 To further examine amino acid phenotypes of POMC neurons, we studied mRNA expression for the glutamatergic marker, type 2 vesicular glutamate transporter (VGLUT2), and the GABA synthetic enzyme, glutamic acid decarboxylase 67 (GAD67), in POMC neurons of both rats and mice by using in situ hybridization techniques.
3554 23640796 In rats, approximately 58% of POMC neurons were labeled for VGLUT2 and 37% for GAD67 mRNA.
3555 23640796 In mice, approximately 43% of POMC neurons contained VGLUT2, and 54% contained GAD67 mRNA.
3556 23649472 The melanocortin system and insulin resistance in humans: insights from a patient with complete POMC deficiency and type 1 diabetes mellitus.
3557 23730258 We revisit the role of NPY and POMC neurons in the regulation of appetite and energy homeostasis, and consider how ROS and intracellular calcium levels affect these neurons.
3558 23735822 As a metabolic disorder depression has been associated with obesity, diabetes, insulin sensitivity, neuropeptide Y, glucose regulation, poor glycemic control, glucagone-like peptide-1, cholezystokinin, ghrelin, leptin, the endocannabinoid system, insulin-like growth factor and gastrin-releasing peptide.
3559 23735822 Additionally blood coagulation, fibrinolysis, D-dimers, plasminogen activator inhibitor-1 protein, platelet activation, VEGF, plasma nitric oxide and its synthase are changed in depressed patients.
3560 23735822 As an endocrinological and stress disorder depression has been connected with the concentration of free T4, TSH, CRH, arginine vasopressin, corticotrophin, corticosteroid release and ACTH.
3561 23735822 Depression as an inflammatory disorder is mediated by pro-inflammatory cytokines, interleukin-1, interleukin-6, TNF-alpha, soluble interleukin-2 receptors, interferon-alpha, interleukin 8, interleukin-10, hs-CRP, acute phase proteins, haptoglobin, toll like receptor 4, interleukin-1beta, mammalian target of rapamycin pathway, substance P, cyclooxygenase-2, prostaglandin-E2, lipid peroxidation levels and acid sphingomyelinase.
3562 23735822 The neurodegenerative hypothesis of depression explains decreased hippocampal volumes in depressed patients and changes of neurotrophic support by BDNF, erythropoietin, GDNF, FGF-2, NT3, NGF and growth hormone.
3563 23735822 Hence, GABA, AMPA, EAAT, NMDA- and metabotropic glutamate receptors (mGluR1 to mGluR8) have gained interest in depression recently.
3564 23817596 The aim of our study is to estimate the prevalence of MS (according to Cook's criteria) in a Chilean cross-sectional sample of 259 obese children (47.1% girls, aged 6-12 years), and to assess the association between common genetic variants of leptin-melanocortin pathway genes (LEP, LEPR, POMC, MC3R and MC4R) with components of the MS using logistic regression.
3565 23835335 Genetic ablation of FoxO1 in selected hypothalamic neurons decreases food intake, increases energy expenditure, and improves glucose homeostasis, highlighting the role of this gene in insulin and leptin signaling.
3566 23835335 Lineage-tracing experiments showed that NPY/AgRP and POMC neurons were minimally affected by the knockout.
3567 23946678 However, within several weeks, plasma ACTH returned to normal, and showed a normal increase response to corticotropin-releasing hormone stimulation test.
3568 23979792 QRFP, a member of the RFamide-related peptide family, is a strongly conserved hypothalamic neuropeptide that has been characterized in various species.
3569 23979792 Additionally, QRFP regulates the expression and release of hypothalamic Neuropeptide Y and proopiomelanocortin/α-Melanocyte-Stimulating Hormone.
3570 24011066 Leptin mimics many of the antidiabetic actions of insulin in insulin-deficient diabetes, but the mechanism is controversial.
3571 24011066 Fujikawa et al. (2013) reveal that leptin receptors in γ-aminobutyric acid (GABA)-ergic and pro-opiomelanocortin (POMC) neurons in the central nervous system are sufficient to mediate the lifesaving and antidiabetic actions of leptin in insulin-deficient mice.