Ignet

Gene Pair Information

Gene Pair: AKT1, INS

Related Sentences

#	PMID	Sentence
1	21437903	Insulin treatment (10 mU/ml/30 min) increased the phosphorylation of the IR ?-subunit and Akt.
2	21914810	In the presence of Rheb and insulin, PRAS40 release is abolished by Akt inhibition without diminishing mTORC1 signaling.
3	9392506	In soleus muscle from GK rats, maximal insulin-stimulated (120 nmol/l) Akt kinase activity was reduced by 68% (P < 0.01) and glucose transport was decreased by 39% (P < 0.05), compared with Wistar rats.
4	9392506	At a submaximal insulin concentration (2.4 nmol/l), activity of Akt kinase and glucose transport were unaltered.
5	9392506	In conclusion, improved glucose tolerance in diabetic GK rats by phlorizin treatment fully restored insulin-stimulated activity of Akt kinase and glucose transport.
6	10811851	These data suggest that PKB in liver plays a pivotal role in systemic glucose homeostasis and that PKB activation might be sufficient for reducing insulin resistance even without full activation of PI3K.
7	10861205	Thus acute activation of PKB is sufficient to induce SREBP1 mRNA accumulation in primary hepatocytes, and might be the major signalling event by which insulin induces SREBP1 gene expression in the liver.
8	11274905	At LG, insulin stimulated PKB activity.
9	11274905	Again, both HG and GlcN significantly reduced insulin's ability to stimulate PKB activity.
10	11274905	We conclude that the hexosamine-mediated insulin resistance of GS activity seen in rat-1 cells is mediated by hexosamine regulation of PI-3K and PKB.
11	11342531	SOCS-1 and SOCS-6 do not inhibit insulin-dependent IR autophosphorylation, but both proteins inhibit insulin-dependent activation of ERK1/2 and protein kinase B in vivo and IR-directed phosphorylation of IRS-1 in vitro.
12	11402048	However, cells expressing the eNOS-S1179A mutant (disrupted Akt phosphorylation site) did not produce detectable NO in response to insulin, whereas the response to LPA was similar to that observed in cells expressing wild-type eNOS.
13	11560942	Exposure of R28 cells, a model of retinal neurons, to 20 mm glucose for 24 h attenuated the ability of 10 nm insulin to rescue them from serum deprivation-induced apoptosis and to phosphorylate Akt compared with 5 mm glucose.
14	11560942	Azaserine, a glutamine:fructose-6-phosphate amidotransferase inhibitor, reversed the effect of 20 mm glucose, but not that of 1.5 mm glucosamine, on attenuation of the ability of insulin to promote cell survival and phosphorylate Akt as well as accumulation of UDP-HexNAc.
15	11560942	These results suggest that the excessive glucose flux through the HBP may direct retinal neurons to undergo apoptosis in a bimodal fashion; i.e. via perturbation of the neuroprotective effect of insulin mediated by Akt and via induction of apoptosis possibly by altered glycosylation of proteins.
16	11739095	There was also no change in insulin-stimulated protein kinase B activity (1.3 +/- 0.1 vs. 1.4 +/- 0.2-fold stimulation with insulin) with training.
17	11812753	Insulin-stimulated Akt activity also increased after troglitazone treatment (from 32 +/- 8 to 107 +/- 32% stimulation, P < 0.05) but was unchanged after metformin therapy.
18	11916922	Inhibition of PTEN expression also dramatically reduced insulin concentrations in ob/ob mice, improved the performance of db/db mice during insulin tolerance tests, and increased Akt phosphorylation in liver in response to insulin.
19	12560330	Ectopically expressed SOCS-3 associated with the IR and suppressed insulin-dependent receptor autophosphorylation, insulin receptor substrate-1 (IRS-1) tyrosine phosphorylation, association of IRS-1 with the p85 subunit of phosphatidylinositol 3-kinase, and activation of Akt.
20	12663464	It is unknown, however, which Akt isoform shows impaired activation in insulin resistance.
21	12663464	Insulin activated all Akt isoforms in lean muscles, whereas only Akt-1 was activated in obese muscles.
22	12594228	IRS-2 appears to be the chief molecule responsible for MAPK and PKB activation by insulin, as knockdown of IRS-2 (but not IRS-1) by RNA interference severely impaired activation of both kinases.
23	12594228	In summary, (i) PI3K mediates insulin-induced reduction of IRS-1 by phosphorylating it while a PI3K/mTOR pathway controls insulin-induced reduction of IRS-2, (ii) in L6 cells, IRS-2 is the major adapter molecule linking the insulin receptor to activation of PKB and MAPK, (iii) the mechanism of IRS-1/2 down-regulation is different in L6 cells compared with 3T3-L1 adipocytes.
24	12941762	Downstream PI 3-kinase, activation of Akt, glycogen synthase kinase (GSK)-3 (alpha and beta isoforms), Foxo1, and atypical protein kinase C were blunted in insulin-stimulated IRS-2(-/-) cells.
25	12909611	Exercise synergistically enhanced insulin-stimulated insulin receptor substrate 1-associated phosphatidylinositol 3-kinase activity (P < 0.05) and Akt Ser473 phosphorylation (P < 0.05) in nondiabetic subjects but had little effect in diabetic subjects.
26	12941959	Using transgenic mice expressing activated calcineurin in skeletal muscle, we report that skeletal muscle reprogramming by calcineurin activation leads to improved insulin-stimulated 2-deoxyglucose uptake in extensor digitorum longus (EDL) muscles compared with wild-type mice, concomitant with increased protein expression of the insulin receptor, Akt, glucose transporter 4, and peroxisome proliferator-activated receptor-gamma co-activator 1.
27	12944390	Using phospho-specific antibodies, we observed that either adiponectin or insulin treatment (but not LPA treatment) caused phosphorylation of both Akt at Ser473 and endothelial nitric-oxide synthase (eNOS) at Ser1179 that was inhibitable by wortmannin.
28	14500580	The activity of FOXO proteins is principally regulated by activation of protein kinase B (PKB)/Akt by insulin and other cytokines.
29	14504291	These cells have a 50% decrease in PI 3-kinase activity and a 30% decrease in Akt activity, leading to decreased insulin-induced glucose uptake and anti-apoptosis.
30	14505487	Previous work showed that acute stimulation of a conditionally active protein kinase B (PKB or cAKT) was sufficient to elicit insulin-like induction of GCK (glucokinase) and SREBP1 (sterol regulatory element-binding protein 1) in hepatocytes [Iynedjian, Roth, Fleischmann and Gjinovci (2000) Biochem.
31	15143198	Furthermore, in vivo insulin-induced activation of the protein kinase Akt is enhanced in skeletal muscle and liver from mice lacking phosphatidylinositol 5-phosphate 4-kinase beta.
32	15010337	Although a pharmacological dose of insulin produces a dramatic increase in phosphorylation and activity of Akt isoforms 1 and 2 in mammalian skeletal muscle, few studies have examined the effect of physiological concentrations of insulin on the phosphorylation of Akt-1 and -2 in normal and diabetic tissue.
33	15211372	The IKK inhibitor I229 did not affect protein expression of Akt, but fully restored insulin action in myocytes subjected to co-culture.
34	15240629	Protein kinase B (PKB) expression and phosphorylated PKB levels in response to insulin stimulation (20 nm) were comparable in the diabetic and control cultures. 5-Amino-4-imidazolecarboxamide riboside (AICAR) mimics the effect of exercise on glucose uptake by activating AMP-activated protein kinase.
35	15467831	Reduction of Akt activity in transgenic animals resulted in impaired glucose tolerance due to defective insulin secretion.
36	15339744	Yet unknown mechanisms in insulin signaling downstream of Akt may be responsible.
37	15632103	Insulin increased the phosphorylation of Akt in all cardiomyocyte preparations (control, db/db, COOH-treated db/db) to the same extent.
38	15632103	Thus insulin has selective metabolic actions in mouse cardiomyocytes; deoxyglucose uptake and Akt phosphorylation are increased, but fatty acid oxidation and AMPK phosphorylation are unchanged.
39	16087719	In normal rat adipocytes, GLP-1 and both exendins share with insulin an increasing action upon the activity of all kinases studied (except PKB), PI3K, p44 and p42 MAPKs and possibly PKC, all being required for their stimulating effect upon glucose uptake.
40	16150913	Interestingly, phosphorylation of IRS-1 at Tyr895 continued to increase over the 20-min period, and protein kinase B (PKB) phosphorylation at Ser473 reached a plateau by 5 min, demonstrating that different profiles of phosphorylation are involved in transmission of the insulin signal despite a constant level of insulin stimulation.
41	16150913	These results demonstrate that under conditions of increased insulin, similar to those used to assess insulin action in vivo, chronic high-fat feeding impairs insulin signal transduction related to glucose metabolism at the level of IRS-1 Tyr612 and PKB Ser473 and that these effects are independent of the type of fat used in the high-fat diet.
42	16170201	Pten insufficiency increased peripheral insulin sensitivity in wild type and Irs2(-/-) mice and increased Akt and Foxo1 phosphorylation in the islets.
43	16311104	Glucose transport, insulin receptor (IR), and IR substrate 1 (IRS1) phosphorylation, phosphatidylinositol 3'-kinase (PI3K) activity, as well as Akt-Ser473 phosphorylation have been investigated at the end of the incubation period and after a further short-term insulin stimulation.
44	16311104	After a short-term insulin stimulation (10 nmol/L insulin for 10 minutes), IR and IRS1 tyrosine phosphorylation, PI3K activation, and Akt-Ser473 phosphorylation significantly increased (P < .01 and P < .05 for Akt) in SkMC-L but not in SkMC-H.
45	16176184	Interestingly, insulin injection of wild-type mice, which activates PKB (protein kinase B) and inhibits GSK3 to a greater degree than feeding (50% versus 25%), does not repress these genes.
46	16399506	Conversely, increased PI3K signaling induced by hypothalamic overexpression of either IRS-2 or protein kinase B (PKB, a key downstream mediator of PI3K action) enhanced the glycemic response to insulin by approximately 2-fold in STZ-DM rats.
47	16339499	Using Ser473 phosphorylation of protein kinase B as output for insulin signaling, a 2-fold increase is found in insulin-stimulated normal platelets, but in DM platelets there is no significant response.
48	16341839	Glycogen synthesis correlated inversely with the activity of phosphorylase-a, irrespective of whether this was modulated by insulin, by PKB activation or by a selective phosphorylase ligand, supporting an essential role for phosphorylase inactivation in the glycogenic action of insulin in hepatocytes.
49	16424109	Unlike insulin, the PI3-K inhibitor wortmannin did not reverse GE antilipolysis, and GE did not affect phosphorylation of protein kinase B (PKB).
50	16505232	Insulin-stimulated increases in Akt phosphorylation and cGMP concentration (a measure of NO bioavailability) after euglycemic-hyperinsulinemic clamp were blunted in the aorta of fatty compared with lean rats but were partly normalized after 2 weeks of treatment with the PKCbeta inhibitor ruboxistaurin (LY333531).
51	16505232	In microvessels isolated from transgenic mice overexpressing PKCbeta2 only in vascular cells, Akt phosphorylation stimulated by insulin was decreased compared with wild-type mice.
52	16505232	Thus, activation of PKCbeta in endothelial cells and vascular tissue inhibits Akt activation by insulin and VEGF, inhibits Akt-dependent eNOS regulation by insulin, and causes endothelial dysfunction in obesity-associated insulin resistance.
53	16506055	It is also reduced in Zucker fa/fa rats, which present an impaired ability of insulin to induce Akt, ERK-1/2 and JNK-1/2 phosphorylation.
54	16807405	A marked decrease of basal and insulin-stimulated AKT phosphorylation, which correlated with the increase of patients' insulin resistance, and a significant increase of IRS total protein expression, together with a lower (IRS-2) or absent (IRS-1) increase of insulin-induced tyrosine phosphorylation, were found.
55	16873695	In the present study, we examined whether insulin's effect on PDK4 expression is impaired in acute insulin-resistant states and, if so, whether this change is accompanied by decreased insulin's effects to stimulate Akt and forkhead box class O (FOXO) 1 phosphorylation.
56	16873695	Insulin stimulation of Akt and FOXO1 phosphorylation was also significantly decreased with Intralipid and lactate infusions.
57	16880400	Although PI3K enzymatic activity is diminished in L-Pik3r1KO livers because of a reduced level of regulatory and catalytic subunits of PI3K, insulin-stimulated Akt activity is actually increased.
58	16855220	Corroborating these results, constitutively active Akt upregulated the signaling molecules involved in insulin-induced relaxation such as iNOS, cGK1alpha, and MBP activity, even in the absence of insulin stimulation.
59	17019595	Insulin activation of (1) IRS1, (2) IRS2, (3) phosphotyrosine-associated phosphatidylinositol-3 kinase activity and (4) the substrate of phosphorylated Akt, AS160, a functional Rab GTPase activating protein important for GLUT4 (now known as solute carrier family 2 [facilitated glucose transporter], member 4 [SLC2A4]) translocation, was unchanged after acute or chronic exercise in either group.
60	17028898	The aim of this study was to test the hypothesis that dose-related effects of insulin may account for the reported differences in insulin signalling to PKB in diabetic muscle.
61	17028898	We compared enzymatic activation of aPKC and PKB, and PKB phosphorylation (threonine-308 and serine-473) during hyperinsulinaemic-euglycaemic clamp studies using both submaximal (400-500 pmol/l) and maximal (1400 pmol/l) insulin levels in non-diabetic control and obese diabetic subjects.
62	17028898	In lean control subjects, the submaximal insulin concentration increased aPKC activity and glucose disposal to approximately 50% of the maximal level and PKBbeta activity to 25% of the maximal level, but PKBalpha activity was not increased.
63	17028898	In obese diabetic subjects, whereas aPKC activation was defective at submaximal and maximal insulin concentrations, PKBbeta activation and the phosphorylation of PKBbeta and PKBalpha were defective at submaximal, but not maximal, insulin concentrations.
64	17109620	Inhibitors of insulin receptor tyrosine kinase, PI3K, Akt and mTOR abrogated insulin-induced Nrf2-mediated GCLc expression, redox balance, and IHEC survival.
65	16962100	Acetaldehyde suppressed basal and insulin-stimulated Akt phosphorylation without affecting total Akt expression.
66	16960657	We have already shown that chronic exposure to the ketone body beta-hydroxybutyrate (OHB) decreases insulin-mediated activation of protein kinase B (PKB) and glucose uptake in cardiomyocytes.
67	17218436	We gave insulin intravenously to these rats and determined the association of glucose transporter-4 with plasma membranes, as well as the phosphorylation of phosphoinositide-dependent protein kinase-1 (PDK1), Akt, and PKCzeta.
68	17218436	Insulin stimulation of PDK1, Akt, and PKCzeta phosphorylation was also reduced.
69	17513702	Interestingly, training improved insulin action on thigh blood flow, and, furthermore, in both basal and insulin-stimulated muscle tissue, activities of Akt1 and GS and phosphorylation of AS160 increased with training (all P < 0.05).
70	17533199	Further, there was reduced insulin induced Akt activation and increased tumor necrosis factor-alpha levels in vascular smooth muscle cells from Ren2 and Sprague-Dawley rats treated with angiotensin II, abnormalities that were abrogated by angiotensin type 1 receptor blockade with valsartan or antioxidant N-acetylcysteine.
71	17640984	Cells expressing the Ser(629)Ala mutation, along with increased Ser(636) phosphorylation, had decreased insulin-stimulated association of the p85 regulatory subunit of phosphatidylinositol 3'-kinase with IRS-1 and decreased phosphorylation of Akt at Ser(473).
72	17575262	However, the sensitivity to insulin for downstream signaling to control of protein kinase B and glucose uptake was not affected by RBP4.
73	17652184	Adenovirus-mediated overexpression of miR-29a/b/c in 3T3-L1 adipocytes could largely repress insulin-stimulated glucose uptake, presumably through inhibiting Akt activation.
74	17652184	In this paper, we demonstrate that Akt is not the direct target gene of miR-29 and that the negative effects of miR-29 on insulin signaling might be mediated by other unknown intermediates.
75	17952839	This reduction was associated with enhanced tyrosine phosphorylation of IRS2 and serine (473) phosphporylation of Akt, indicating improved hepatic insulin signaling.
76	18171435	Evidence now suggests that the improvements in insulin sensitivity associated with exercise training are also related to changes in the expression and/or activity of proteins involved in insulin signal transduction in skeletal muscle such as the AMP-activated protein kinase (AMPK) and the protein kinase B (Akt) substrate AS160.
77	18191647	The current wisdom indicates that insulin's positive effects, normoglycemia, vasodilation, and anti-inflammation, are mediated by the canonical phosphoinositide 3-kinase (PI3K)/Akt pathway whereas the negative effects are mediated by the mitogen-activated protein kinase (MAPK)/extracellular regulated kinase (ERK) pathway.
78	18434357	These data indicate that acute, physiological elevation in FFA has a greater impact on insulin signalling downstream of IR and IRS-1, at the level of PKB and GSK-3beta, and that under these conditions stress signalling pathways are not significantly stimulated.
79	18388859	ProF binds to the transcription factor Foxo1 (Forkhead box O1), a negative regulator of insulin action and adipogenesis, and facilitates the phosphorylation and thus inactivation of Foxo1 by Akt.
80	17949249	Renal cortical activity and expression of Akt and mTOR (kinase assay, western blotting) were determined in streptozotocin-diabetic rats (D) with different levels of glycemic control (blood glucose 22.0+/-1.0, 13.4+/-1.5, 8.1+/-0.4 mmol/l, p<0.05 between the groups), achieved by varying insulin treatment (0, 4 and 12 IU/day), and in control rats with (C4) or without (C) chronic insulin administration.
81	17949249	Renal Akt activity was reduced in D rats without insulin treatment and severe hyperglycemia (D-0, -62 %, p<0.01 vs.
82	17949249	Moreover, insulin activated renal Akt (+82 %, p<0.01), but not mTOR in C4.
83	18973876	Insulin phosphorylated its receptor in the neuroblastoma cells but not in astrocytes and, like IGF-1, increased ERK1/2 and Akt phosphorylation.
84	19011679	Insulin stimulated expression of aPKCzeta (p<0.001) and Akt1 (p<0.001) was decreased in muscle of LBW men when compared to insulin stimulated controls.
85	19114996	Because insulin resistance is characterized by a marked reduction in insulin-stimulated PI3K-mediated activation of Akt, we asked whether MES could increase Akt phosphorylation and ameliorate insulin resistance.
86	19330070	The work of numerous different researchers indicates a role of PKB in regulating insulin-stimulated glucose uptake.
87	19218147	Akt is also a factor in the pathomechanism of diabetes as it determines beta-cell apoptosis of Langerhans islets and insulin sensitivity of the cells.
88	19357831	Previous findings in rodents used as a model of diabetes suggest that insulin activation of atypical protein kinase C (aPKC) is impaired in muscle, but, unexpectedly, conserved in liver, despite impaired hepatic protein kinase B (PKB/Akt) activation.
89	19235132	In this study, we investigated the role of protein kinase B (Akt) and p42/44 mitogen-activated protein kinase (ERK 1/2) signaling pathways in mediating the mitogenic action of INS in VSMCs.
90	19235132	Incubation of rat VSMCs with INS (100 nM) for 10 min resulted in an increase of Akt phosphorylation by 6-fold (p<0.001) and ERK 1/2 phosphorylation by 3-fold (p<0.001).
91	19235132	Prolonged treatment of VSMCs with INS for 24 h did not have an effect on either Akt or ERK1/2 phosphorylation.
92	19235132	These results indicate that INS acts through Akt and ERK 1/2 signaling pathways to up-regulate proliferation of VSMC's.
93	19273608	Insulin stimulation of betaIRKO and betaIRS2KO cells led to blunted activation of phosphatidylinositol 3-kinase and Akt kinase, while surprisingly, glucose failed to activate either kinase but phosphorylated extracellular signal-regulated kinase.
94	19289493	Insulin resistance in Akt2(-/-) mice was inhibited by haplodeficiency of Pten, suggesting that other Akt isoforms can compensate for Akt2 function.
95	19336408	Insulin-induced changes in mtDNA, mitochondrial mass, intracellular ATP content, and transcripts of mitochondrion-associated genes were prevented by blockade of Akt activation with the phosphatidylinositol 3-kinase inhibitor LY294002.
96	19416712	Insulin-stimulated activation of Akt and suppression of gluconeogenesis in hepatocytes are enhanced by APPL1 overexpression, but are attenuated by APPL1 knockdown.
97	19531641	This correlated with the ability of rosiglitazone to enhance insulin sensitivity for stimulation of protein kinase B (Akt) phosphorylation and glucose transport; rosiglitazone also corrected high-glucose-induced insulin resistance in L6 cells.
98	19282820	HFCS-55 induced a downregulation of the insulin signaling pathway, as indicated by attenuated (ser473)phosphorylation of AKT1.
99	19717727	The insulin-induced relaxation was inhibited by treatment with an Akt inhibitor in control and diabetic aortas, but not in the HI-diabetic aorta.
100	19717727	These results suggest that the plasma insulin level has a close relation to the level of aortic PDK-1/Akt (at Thr(308))/NOS activities, and that reduced actions of the PDK-1/Akt (at Thr(308)) signal pathway may contribute to the impairments of insulin-induced endothelial functions seen in hyperinsulinemic diabetes.
101	19740738	We show that a mutant of TBC1D1, in which several Akt sites have been converted to alanine, is considerably more inhibitory to insulin-stimulated GLUT4 translocation than wild-type TBC1D1.
102	19741193	No differences in insulin or PDGF-induced phosphorylation of ERK-1/2 or components of the Akt pathway (Akt-Ser473, Akt-Thr308, and GSK-3beta) were apparent between the two populations.
103	19657071	Akt phosphorylation in response to insulin was reduced in adipose and skeletal muscle of adult rats following exposure to LP diet in early life when compared to control-fed animals, but this was only apparent in males.
104	20029537	We have demonstrated that insulin-like growth factor type 1 receptor (IGF-1R) plays a role in transducing the effect of H2O2, leading to protein kinase B (PKB) phosphorylation.
105	20068149	Although lean female MKR mice are insulin resistant and glucose intolerant, displaying accelerated mammary gland development and enhanced phosphorylation of IR/IGF-IR and Akt in mammary tissue, in the context of three different mouse models of breast cancer, these metabolic abnormalities were found to accelerate the development of hyperplastic precancerous lesions.
106	18555856	We measured basal and insulin-stimulated glucose uptake, glycogen accumulation, phosphoinositide 3 (PI-3) kinase activity, and Akt phosphorylation in primary skeletal muscle culture from subjects with type 2 diabetes mellitus incubated with or without various concentrations of PMI 5011.
107	20872961	The phosphoinositide 3-kinase (PI3K)/phosphatase and tensin homolog (PTEN)/Akt axis is a key signal transduction node that regulates crucial cellular functions, including insulin and other growth factors signaling, lipid and glucose metabolism, as well as cell survival and apoptosis.
108	20549472	Studies over the last two decades have firmly established the importance of AKT in the regulation of cell survival, proliferation, and insulin-dependent metabolic cell responses.
109	20730455	Also, intracellular signaling is different with respect to insulin, with a prevalent activation of the ERK rather than the AKT pathway.
110	21109194	These defects were normalized by expression of a constitutively active form of Akt in the islets of ?DKO mice, preserving insulin secretion in response to glucose.
111	20938636	In both groups, training-induced improvements in insulin-stimulated R(d) (~20%) were associated with increased muscle protein content of Akt, TBC1D4, ?2-AMP-activated kinase (AMPK), glycogen synthase, hexokinase II and GLUT4 (20-75%).
112	21073655	Furthermore, high glucose concentrations led to apoptosis of ?-cells by activation of p38MAPK and p53, and dysfunction of ?-cells through phosphatase and tensih homolog (PTEN)-dependent Jun N-terminal kinase (JNK) activation and protein kinase B (AKT/PKB) inhibition, which induced the translocation of forkhead box O1 and pancreatic duodenal homeobox-1, followed by reduced insulin expression and secretion.
113	20962202	Akt phosphorylation following insulin stimulation in soleus muscle was significantly (25%) higher in Hypoxia than Control (P < 0.05).
114	20959631	Inhibition of Akt signalling leads to insulin resistance and type 2 diabetes, whereas hyperactivation of Akt promotes tumorigenesis.
115	20959631	In this study, we investigate how modest changes in the activity of the Akt signalling pathway, to an extent that might be achieved by drug treatment, would impact on insulin resistance and tumorigenesis.
116	20959631	Using insulin-resistant PDK1(K465E/K465E) PH domain knock-in mice, we found that introducing the PTEN(+/-) mutation to slightly stimulate Akt restored normal insulin sensitivity.
117	21145457	IP7 affects this pathway by potently inhibiting the PDK1 phosphorylation of Akt, preventing its activation and thereby affecting insulin signaling.
118	20981553	In contrast, in hearts from HFD-induced insulin resistance rats, EPO decreased infarct size (18.66��1.99 and 34.62��3.41% in EPO-treated and untreated HFD rat hearts, respectively, p�<�0.05) and increased phosphorylation of Akt, ERK1/2, and GSK-3?.
119	21189286	To elucidate the mechanism of how insulin signaling induces RDS, bronchoalveolar epithelium-specific Akt1 transgenic (TG) mice were generated.
120	20022950	To explore the mechanism of insulin resistance, we have developed a novel system to activate Akt independently of its upstream effectors as well as other insulin-responsive pathways such as mitogen-activated protein kinase. 3T3-L1 adipocytes were rendered insulin-resistant either with chronic insulin or dexamethasone treatment, but conditional activation of Akt2 stimulated hemagglutinin-tagged glucose transporter 4 translocation to the same extent in these insulin-resistant and control cells.
121	21241768	In muscle cells and HEK293 cells, downregulation of SIRT1 reduced, while overexpression increased, insulin-induced PKB activatory phosphorylation.
122	20731625	No effect was observed on Akt and ERK1/2 phosphorylation. (1) Physiological FFA elevations require at least 120 min to induce insulin resistance, (2) that insulin resistance peaks 360 min after initiation of FFA exposure and (3) ceases 210 min after termination of the FFA infusion.
123	20888730	DC260126 could significantly decrease serum insulin levels, improve insulin tolerance and increase Akt phosphorylation levels in liver, suggesting improved insulin sensitivity in DC260126-treated rats.
124	19959757	Ceramide is now recognized as a negative regulator of insulin signaling by impairing protein kinase B (PKB)/Akt activation.
125	19996382	We found that 1) skeletal muscle TRIB3 protein levels are significantly elevated in T2DM patients; 2) muscle TRIB3 protein content is inversely correlated with glucose disposal rates and positively correlated with fasting glucose; 3) skeletal muscle TRIB3 protein levels are increased in STZ-diabetic rats, db/db mice, and Zucker fatty rats; 4) stable TRIB3 hyperexpression in muscle cells blocks insulin-stimulated glucose transport and glucose transporter 4 (GLUT4) translocation and impairs phosphorylation of Akt, ERK, and insulin receptor substrate-1 in insulin signal transduction; and 5) TRIB3 mRNA and protein levels are increased by high glucose concentrations, as well as by glucose deprivation in muscle cells.
126	17971451	Insulin action measured by phosphorylation of Akt is not enhanced in muscle, but phosphorylation of AMP-dependent kinase is increased.
127	20051463	EDC3, a component of the mRNA decay and translation repression pathway associated with mRNA processing bodies, was shown to be phosphorylated by AKT downstream of insulin signaling.
128	21479175	Treatment of the isolated fat body with human insulin in an in vitro culture system increased total sugar in the fat body and stimulated Akt phosphorylation.
129	19249087	This study reveals a conserved role for the B56 regulatory subunit in regulating insulin signaling through AKT dephosphorylation, thereby having widespread implications in cancer and diabetes research.
130	21190014	Insulin action is purportedly modulated by Drosophila tribbles homologue 3 (TRIB3), which in vitro prevents thymoma viral proto-oncogene (AKT) and peroxisome proliferator-activated receptor-? (PPAR-?) activation.
131	21194385	Cortical neurons pretreated with insulin, but not glucose or PA, exhibited blunted phosphorylation of Akt, p70S6K, and GSK-3? with no change detected in ERK.
132	21205932	We showed previously that insulin receptor signaling is diminished in retinas of animal models of diabetes and that downstream Akt signaling is involved in insulin-mediated retinal neuronal survival.
133	21205932	To investigate the mechanism by which PKC impairs insulin-stimulated Akt activity, we assessed various upstream mediators of Akt signaling.
134	15671479	Foxo1, a member of the Fox0 subfamily of winged-helix forkhead transcription factors, is a target of insulin and insulin-like growth factor-1 (IGF-1) signal transduction pathways that activate protein kinase B (PKB) in pancreatic beta cells.
135	18487449	Downregulation of PAT proteins also produced insulin resistance, as indicated by decreased insulin stimulation of Akt phosphorylation (P < 0.001).
136	20103738	Hepatic phosphoenolpyruvate carboxykinase (PEPCK) mRNA expression and red skeletal muscle PKB Ser(473) phosphorylation were used to assess tissue-specific insulin sensitivity. mRNA expression of the hypothalamic mineralocorticoid receptor was fivefold upregulated in LBW (P < 0.05 vs.
137	21088934	To investigate insulin sensitivity within the liver, serine phosphorylation of IRS-1 (Ser307) and Akt (Ser473) and expression of gluconeogenic genes, PEPCK and G6Pase, were tested.
138	19139117	The phosphatidylinositol 3-kinase (PI3K)/Akt signaling cascade is an important component of the insulin signaling in normal tissues leading to glucose uptake and homeostasis and for cell survival signaling in cancer cells.
139	20299475	The robust induction of the gluconeogenic program in liver of rapamycin-treated rats underlies the development of severe glucose intolerance even in the face of preserved hepatic insulin signaling to Akt and despite a modest reduction in adiposity.
140	21674027	DLBS3233 was also found to enhance the expression of genes associated with increased insulin signaling and sensitivity, such as peroxisome proliferator-activated receptor gamma, phosphatidylinositol-3 kinase, Akt, and glucose transporter 4.
141	21309058	In isolated extensor digitorum longus muscle, FGF21 potentiated insulin-stimulated glucose transport, without altering phosphorylation of Akt or AMP-activated protein kinase.
142	21646544	Transient down-regulation and overexpression of Akt isoforms in adipocytes demonstrated that insulin-activated PI3-kinase signals to GLUT4 primarily through Akt2 kinase, whereas Akt1 and Akt2 signal to FoxO1.
143	21646544	We propose that the lower threshold of insulin activity for FoxO1's nuclear exclusion is in part due to its regulation by both Akt isoforms.
144	21487310	Intranasal delivery of insulin was associated with greater preservation of the phosphatidylinositol 3-kinase signaling pathway involving Akt, cyclic AMP response element binding protein,and glycogen synthase kinase 3? but did not alter extracellular signal-regulated kinase, mitogen-activated protein kinase/extracellular signal-regulated kinase, or c-Jun amino-terminal kinase.
145	16897074	Myotubes from type 2 diabetic patients displayed marked reduction in the effects of insulin on glycogen synthesis and on PKB phosphorylation.
146	16951716	Cell viability was measured by Trypan Blue exclusion and the response to insulin evaluated by the activation of the extracellular regulated kinase (ERK1/2), ERK kinase (MEK1/2) and protein kinase B (PKB/Akt) signaling components.
147	21754917	Additionally, Akt activation and neurite outgrowth in response to insulin were significantly decreased in DRG cultures from diabetic ob/ob mice.
148	20446576	Since insulin regulates the eNOS activity through the phosphorylation by AKT, insulin resistance is one of major factors associating with the endothelial dysfunction in obesity and diabetes.
149	17351147	Insulin improved Akt phosphorylation in the EX group and increased mTOR/S6 kinase 1 phosphorylation and muscle protein synthesis (EX group: 49 +/- 11 to 89 +/- 23; CTRL group: 58 +/- 8 to 57 +/- 12 nmol x min(-1) x 100 ml leg(-1)) in the EX group only (P < 0.05).
150	21572010	Akt (at Thr(308)) phosphorylation and eNOS (at Ser(1177)) phosphorylation, and also the ?-arrestin2 protein level, were markedly decreased in the membrane fraction of insulin-stimulated ob/ob aortas (vs. insulin-stimulated lean ones).
151	21647634	After the application of anti-STEAP4 antibodies at 0.002�mg/mL, adipocytes exhibited reduced insulin-stimulated glucose transport by attenuating the phosphorylation of IRS-1, PI3K (p85), and Akt.
152	21647634	In conclusion, (i) STEAP4 regulates the function of IRS-1, PI3K, and Akt and decreases insulin-induced GLUT4 translocation and glucose uptake; (ii) ROS-related mitochondrial dysfunction may be related to a reduced IRS-1 correlation with the PI3K signaling pathway, leading to insulin resistance.
153	21519329	OSM in turn attenuated insulin-dependent Akt activation and, as a downstream target, glucokinase induction in hepatocytes, most likely by inducing suppressor of cytokine signaling 3 (SOCS3).
154	11375341	Insulin stimulation of phosphatidylinositol 3-kinase activity and phosphorylation of protein kinase B were not decreased by indinavir.
155	21907143	The protein kinase B(?) (Akt2) pathway is known to�mediate insulin-stimulated glucose transport through increasing glucose transporter GLUT4 translocation from intracellular stores to the plasma membrane (PM).
156	21810948	More importantly, acute insulin stimulation after chronic insulin treatment resulted in blunted phosphorylation of Akt, p70S6K, and glycogen synthase kinase-3?.
157	21810948	Interestingly, when the cells were treated with phosphatidylinositol 3-kinase pathway inhibitor, but not MAPK pathway inhibitor, chronic insulin treatment did not block acute insulin treatment-induced Akt phosphorylation.
158	19521344	Consistent with impaired insulin signaling, we found that insulin-stimulated 3T3-L1 adipocytes exhibited decreased IRS-1(Tyr) phosphorylation, increased IRS-1(Ser) phosphorylation, and impaired Akt phosphorylation when treated with 12/15-LO product.
159	21937027	Although palmitate did not impair insulin signaling as shown by the immunoblotting analysis of AKT phosphorylation, it did inactivate AMP-activated protein kinase (AMPK).
160	20880397	However, these PI3K inhibitors all abolished insulin-induced Na(+) absorption and inactivated PI3K, SGK1 and PKB fully.
161	21861178	Non-cytotoxic MGO concentrations inhibited insulin-induced IRS tyrosine phosphorylation and phosphatidylinositol 3-kinase (PI3K)/protein kinase B (PKB) pathway activation independently from reactive oxygen species (ROS) production.
162	15182363	Depletion of cholesterol from the cells using beta-cyclodextrin blocked insulin stimulation of glucose uptake, insulin inhibition of perilipin phosphorylation in response to isoproterenol, and insulin stimulation of protein kinase B and Map-kinases extracellular signal-related kinase (ERK)1/2 phosphorylation.
163	21893030	Vaspin significantly increased Akt phosphorylation and prevented the impairment of Akt phosphorylation by linoleic acid (LA) in insulin-stimulated endothelial cells, which effects were abolished by pretreatment with the PI3-kinase inhibitor, Wortmannin.
164	16839840	Insulin increased (P < .05) Akt Ser473 and GSK-3alpha/beta Ser21/Ser9 phosphorylation in both trials, with the response tending to be higher in the exercise trial.
165	17223256	However, the expected functional consequences were not observed, as we saw no change in basal or insulin-stimulated glucose uptake and phosphorylation of GSK3beta, Akt (T308 and S473) or ERK1/2.
166	18534819	The decreased ATM expression suggests that ATM is involved in the development of insulin resistance through down-regulation of Akt activity.
167	18701453	High glucose and high insulin augmented activation of Akt, Erk, and p70S6 kinase.
168	19365404	To investigate the mechanism for the resistance to HFD-induced hyperglycemia in PPKO mice, we evaluated AKT phosphorylation in major insulin-responsive tissues: the liver, muscle, and fat.
169	19472218	We have also shown that inhibition of tyrosine kinase activity of insulin receptor (IR) and/or insulin-like growth factor 1 (IGF1) receptor (IGFR) reverses the PLTP-induced increase in levels of phosphorylated Akt (pAkt(Thr308) and pAkt(Ser473)), suggesting that PLTP-mediated activation of the PI3K/Akt pathway is dependent on IR/IGFR receptor tyrosine kinase activity.
170	20004975	Effect of insulin on FcepsilonRI signaling pathways was marked by enhanced phosphorylation of Lyn, Fyn, Gab2 and Akt.
171	21295959	The response to insulin was evaluated through (Ser473)AKT phosphorylation.
172	22087313	Furthermore, inhibition of PP2A by specific inhibitors increased insulin-stimulated activation of Akt and phosphorylation of FoxO1 and Gsk3?.