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PMID |
Sentence |
1 |
7636235
|
Stimulation of T cells resulted in a rapid activation of CaM kinase II and protein kinase C (PKC) activity as determined by the phosphorylation of synthetic peptide substrates recognized by these enzymes.
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2 |
7869038
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Calcium/calmodulin-dependent protein kinase II downregulates both calcineurin and protein kinase C-mediated pathways for cytokine gene transcription in human T cells.
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3 |
7869038
|
Engagement of the T cell receptor for antigen activates phospholipase C resulting in an increase in intracellular free calcium concentration ([Ca2+]i) and activation of protein kinase C (PKC).
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4 |
7869038
|
Recent studies have identified calcineurin as a key enzyme for interleukin (IL)-2 and IL-4 promoter activation.
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5 |
7869038
|
The inhibitory effect of CaM-K II on IL-2 promoter was associated with decreased transcription of its AP-1 and NF-AT transactivating pathways.
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6 |
7869038
|
Similar results were obtained when a construct containing the IL-4 promoter also was used. gamma B*CaM-K also downregulated the activation of AP-1 in response to transfection with a constitutively active mutant of PKC or stimulation with PMA.
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7 |
9677319
|
Rad, Gem and Kir possess unique structural features in comparison with other Ras-like GTPases, including a C-terminal 31-residue extension that lacks typical prenylation motifs.
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8 |
9677319
|
Here we show that Rad serves as a substrate for phosphorylation by CaMKII, cAMP-dependent protein kinase (PKA), protein kinase C (PKC) and casein kinase II (CKII) with stoichiometries in vitro of 0.2-1.3 mol of phosphate/mol of Rad.
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9 |
9677319
|
By deletion and point mutation analysis we show that phosphorylation by CaMKII and PKA occurs on a single serine residue at position 273, whereas PKC and CKII phosphorylate multiple C-terminal serine residues, including Ser214, Ser257, Ser273, Ser290 and Ser299.
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10 |
9677319
|
Rad, Gem and Kir possess unique structural features in comparison with other Ras-like GTPases, including a C-terminal 31-residue extension that lacks typical prenylation motifs.
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11 |
9677319
|
Here we show that Rad serves as a substrate for phosphorylation by CaMKII, cAMP-dependent protein kinase (PKA), protein kinase C (PKC) and casein kinase II (CKII) with stoichiometries in vitro of 0.2-1.3 mol of phosphate/mol of Rad.
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12 |
9677319
|
By deletion and point mutation analysis we show that phosphorylation by CaMKII and PKA occurs on a single serine residue at position 273, whereas PKC and CKII phosphorylate multiple C-terminal serine residues, including Ser214, Ser257, Ser273, Ser290 and Ser299.
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13 |
10078549
|
Site-specific phosphorylation of synapsin I by Ca2+/calmodulin-dependent protein kinase II in pancreatic betaTC3 cells: synapsin I is not associated with insulin secretory granules.
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14 |
10078549
|
Increasing evidence supports a physiological role of Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) in the secretion of insulin from the pancreatic beta-cell, but the precise sites of action are not known.
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15 |
10078549
|
By immunoprecipitation, in situ phosphorylation of synapsin I was induced in permeabilized betaTC3 cells within a Ca2+ concentration range shown to activate endogenous CaM kinase II under identical conditions.
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16 |
10078549
|
Proteolytic digests of these immunoprecipitates revealed that calcium primarily induced the increased phosphorylation of sites identified as CaM kinase II-specific and distinct from protein kinase A-specific sites.
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17 |
10078549
|
Immunofluorescence and immunogold electron microscopy verified synapsin I expression in betaTC3 cells and pancreatic slices but demonstrated little if any colocalization of synapsin I with insulin-containing dense core granules.
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18 |
10078549
|
Thus, although this study establishes that synapsin I is a substrate for CaM kinase II in the pancreatic beta-cell, this event appears not to be important for the mobilization of insulin granules.
|
19 |
10078549
|
Site-specific phosphorylation of synapsin I by Ca2+/calmodulin-dependent protein kinase II in pancreatic betaTC3 cells: synapsin I is not associated with insulin secretory granules.
|
20 |
10078549
|
Increasing evidence supports a physiological role of Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) in the secretion of insulin from the pancreatic beta-cell, but the precise sites of action are not known.
|
21 |
10078549
|
By immunoprecipitation, in situ phosphorylation of synapsin I was induced in permeabilized betaTC3 cells within a Ca2+ concentration range shown to activate endogenous CaM kinase II under identical conditions.
|
22 |
10078549
|
Proteolytic digests of these immunoprecipitates revealed that calcium primarily induced the increased phosphorylation of sites identified as CaM kinase II-specific and distinct from protein kinase A-specific sites.
|
23 |
10078549
|
Immunofluorescence and immunogold electron microscopy verified synapsin I expression in betaTC3 cells and pancreatic slices but demonstrated little if any colocalization of synapsin I with insulin-containing dense core granules.
|
24 |
10078549
|
Thus, although this study establishes that synapsin I is a substrate for CaM kinase II in the pancreatic beta-cell, this event appears not to be important for the mobilization of insulin granules.
|
25 |
10078549
|
Site-specific phosphorylation of synapsin I by Ca2+/calmodulin-dependent protein kinase II in pancreatic betaTC3 cells: synapsin I is not associated with insulin secretory granules.
|
26 |
10078549
|
Increasing evidence supports a physiological role of Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) in the secretion of insulin from the pancreatic beta-cell, but the precise sites of action are not known.
|
27 |
10078549
|
By immunoprecipitation, in situ phosphorylation of synapsin I was induced in permeabilized betaTC3 cells within a Ca2+ concentration range shown to activate endogenous CaM kinase II under identical conditions.
|
28 |
10078549
|
Proteolytic digests of these immunoprecipitates revealed that calcium primarily induced the increased phosphorylation of sites identified as CaM kinase II-specific and distinct from protein kinase A-specific sites.
|
29 |
10078549
|
Immunofluorescence and immunogold electron microscopy verified synapsin I expression in betaTC3 cells and pancreatic slices but demonstrated little if any colocalization of synapsin I with insulin-containing dense core granules.
|
30 |
10078549
|
Thus, although this study establishes that synapsin I is a substrate for CaM kinase II in the pancreatic beta-cell, this event appears not to be important for the mobilization of insulin granules.
|
31 |
10078549
|
Site-specific phosphorylation of synapsin I by Ca2+/calmodulin-dependent protein kinase II in pancreatic betaTC3 cells: synapsin I is not associated with insulin secretory granules.
|
32 |
10078549
|
Increasing evidence supports a physiological role of Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) in the secretion of insulin from the pancreatic beta-cell, but the precise sites of action are not known.
|
33 |
10078549
|
By immunoprecipitation, in situ phosphorylation of synapsin I was induced in permeabilized betaTC3 cells within a Ca2+ concentration range shown to activate endogenous CaM kinase II under identical conditions.
|
34 |
10078549
|
Proteolytic digests of these immunoprecipitates revealed that calcium primarily induced the increased phosphorylation of sites identified as CaM kinase II-specific and distinct from protein kinase A-specific sites.
|
35 |
10078549
|
Immunofluorescence and immunogold electron microscopy verified synapsin I expression in betaTC3 cells and pancreatic slices but demonstrated little if any colocalization of synapsin I with insulin-containing dense core granules.
|
36 |
10078549
|
Thus, although this study establishes that synapsin I is a substrate for CaM kinase II in the pancreatic beta-cell, this event appears not to be important for the mobilization of insulin granules.
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37 |
10102681
|
CaM kinase II: a protein kinase with extraordinary talents germane to insulin exocytosis.
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38 |
10102681
|
CaM kinase II, a multifunctional Ca2+/calmodulin-dependent protein kinase, is expressed in the pancreatic beta-cell and is activated by glucose and other secretagogues in a manner correlating with insulin secretion.
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39 |
10102681
|
It is proposed that the activation of CaM kinase II mediates some of the actions of Ca2+ on the exocytosis of insulin secretory granules.
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40 |
10102681
|
This suggestion is supported by the localization of CaM kinase II to the insulin secretory granule and by the identification of two secretory-relevant proteins, MAP-2 and synapsin I, as endogenous substrates in the beta-cell.
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41 |
10102681
|
CaM kinase II: a protein kinase with extraordinary talents germane to insulin exocytosis.
|
42 |
10102681
|
CaM kinase II, a multifunctional Ca2+/calmodulin-dependent protein kinase, is expressed in the pancreatic beta-cell and is activated by glucose and other secretagogues in a manner correlating with insulin secretion.
|
43 |
10102681
|
It is proposed that the activation of CaM kinase II mediates some of the actions of Ca2+ on the exocytosis of insulin secretory granules.
|
44 |
10102681
|
This suggestion is supported by the localization of CaM kinase II to the insulin secretory granule and by the identification of two secretory-relevant proteins, MAP-2 and synapsin I, as endogenous substrates in the beta-cell.
|
45 |
10102681
|
CaM kinase II: a protein kinase with extraordinary talents germane to insulin exocytosis.
|
46 |
10102681
|
CaM kinase II, a multifunctional Ca2+/calmodulin-dependent protein kinase, is expressed in the pancreatic beta-cell and is activated by glucose and other secretagogues in a manner correlating with insulin secretion.
|
47 |
10102681
|
It is proposed that the activation of CaM kinase II mediates some of the actions of Ca2+ on the exocytosis of insulin secretory granules.
|
48 |
10102681
|
This suggestion is supported by the localization of CaM kinase II to the insulin secretory granule and by the identification of two secretory-relevant proteins, MAP-2 and synapsin I, as endogenous substrates in the beta-cell.
|
49 |
10102681
|
CaM kinase II: a protein kinase with extraordinary talents germane to insulin exocytosis.
|
50 |
10102681
|
CaM kinase II, a multifunctional Ca2+/calmodulin-dependent protein kinase, is expressed in the pancreatic beta-cell and is activated by glucose and other secretagogues in a manner correlating with insulin secretion.
|
51 |
10102681
|
It is proposed that the activation of CaM kinase II mediates some of the actions of Ca2+ on the exocytosis of insulin secretory granules.
|
52 |
10102681
|
This suggestion is supported by the localization of CaM kinase II to the insulin secretory granule and by the identification of two secretory-relevant proteins, MAP-2 and synapsin I, as endogenous substrates in the beta-cell.
|
53 |
10215590
|
KN-62 did not affect basal 2-deoxyglucose transport, but it did inhibit both insulin- and hypoxia-stimulated glucose transport activity by 46 and 40% respectively. 1-[N,O-Bis-(1, 5-isoquinolinesulphonyl)-N-methyl-l-tyrosyl]-4-phenylpiperazine (KN-04), a structural analogue of KN-62 that does not inhibit CAMKII, had no effect on hypoxia-or insulin-stimulated glucose transport.
|
54 |
10215590
|
Accordingly, KN-62 decreased the stimulated cell-surface GLUT4 labelling by a similar extent as the inhibition of glucose transport (insulin, 49% and hypoxia, 54%).
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55 |
10215590
|
Additionally, KN-62 affected neither insulin-stimulated phosphoinositide 3-kinase nor Akt activity, suggesting that the effects of KN-62 are not due to non-specific effects of this inhibitor on these regions of the insulin-signalling cascade.
|
56 |
10215590
|
The results of the present study suggest that CAMKII might have a distinct role in insulin- and hypoxia-stimulated glucose transport, possibly in the vesicular trafficking of GLUT4.
|
57 |
10215590
|
KN-62 did not affect basal 2-deoxyglucose transport, but it did inhibit both insulin- and hypoxia-stimulated glucose transport activity by 46 and 40% respectively. 1-[N,O-Bis-(1, 5-isoquinolinesulphonyl)-N-methyl-l-tyrosyl]-4-phenylpiperazine (KN-04), a structural analogue of KN-62 that does not inhibit CAMKII, had no effect on hypoxia-or insulin-stimulated glucose transport.
|
58 |
10215590
|
Accordingly, KN-62 decreased the stimulated cell-surface GLUT4 labelling by a similar extent as the inhibition of glucose transport (insulin, 49% and hypoxia, 54%).
|
59 |
10215590
|
Additionally, KN-62 affected neither insulin-stimulated phosphoinositide 3-kinase nor Akt activity, suggesting that the effects of KN-62 are not due to non-specific effects of this inhibitor on these regions of the insulin-signalling cascade.
|
60 |
10215590
|
The results of the present study suggest that CAMKII might have a distinct role in insulin- and hypoxia-stimulated glucose transport, possibly in the vesicular trafficking of GLUT4.
|
61 |
10331647
|
The CD38-cyclic ADP-ribose signaling system in insulin secretion.
|
62 |
10331647
|
Cyclic ADP-ribose then binds to FK506-binding protein 12.6 in the ryanodine receptor Ca2+ channel (RyR), dissociating the binding protein from RyR to induce the release of Ca2+ from the endoplasmic reticulum.
|
63 |
10331647
|
Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) phosphorylates RyR to sensitize and activate the Ca2+ channel.
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64 |
10331647
|
Ca2+, released from the RyR, further activates CaM kinase II and amplifies the process.
|
65 |
10331647
|
The CD38-cyclic ADP-ribose signaling system in insulin secretion.
|
66 |
10331647
|
Cyclic ADP-ribose then binds to FK506-binding protein 12.6 in the ryanodine receptor Ca2+ channel (RyR), dissociating the binding protein from RyR to induce the release of Ca2+ from the endoplasmic reticulum.
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67 |
10331647
|
Ca2+/calmodulin-dependent protein kinase II (CaM kinase II) phosphorylates RyR to sensitize and activate the Ca2+ channel.
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68 |
10331647
|
Ca2+, released from the RyR, further activates CaM kinase II and amplifies the process.
|
69 |
10630371
|
In this experiment, to assess the significance of G protein signaling pathways in the pathogenesis of diabetic cardiomyopathy, we analyzed the expression of G proteins and the activities of second messenger dependent protein kinases: cAMP-dependent protein kinase (PKA), DAG-mediated protein kinase C (PKC), and calmodulin dependent protein kinase II (CaM kinase II) in the streptozotocin induced diabetic rat heart.
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70 |
10673339
|
While CaMKII has been implicated in learning and memory, the biological role of the other multifunctional CaM kinases, CaMKI and CaMKIV, is largely unknown.
|
71 |
11522681
|
In view of the depressed sarcoplasmic reticulum (SR) Ca2+-pump and Ca2+-release activities in the diabetic heart and the critical role of phosphorylation in regulating the SR function, we examined the status of Ca2+-calmodulin-dependent protein kinase (CaMK) and cAMP-dependent protein kinase (PKA)-mediated phosphorylations in the diabetic heart.
|
72 |
11815461
|
We suggest that three families of PKs (calmodulin-dependent PK [CaMK], PKA, and PKC) function as distal amplifiers for stimulus-secretion coupling signals originating from fuel metabolism, as well as from incretins acting through membrane receptors, adenylate cyclase, and phospholipase C.
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73 |
11908465
|
In contrast, 4 months after induction of diabetes NR2B subunit immunoreactivity, CaMKII and Tyr-dependent phosphorylation of the NR2A/B subunits of the NMDA receptor were reduced and alphaCaMKII autophosphorylation and its association to the NMDA receptor complex were impaired in STZ-rats compared with age-matched controls.
|
74 |
11908465
|
Insulin treatment prevented the reduction in kinase activities, NR2B expression levels, CaMKII-NMDA receptor association and NMDA currents.
|
75 |
11914736
|
The majority of the islet-restricted (BETA2, PDX-1, RIP3b1-Act/C1) and ubiquitous (E2A, HEB) insulin-binding proteins have been characterized.
|
76 |
11914736
|
Their DNA binding activity and their transactivating potency can be modified in response to nutrients (glucose, NEFA) or hormonal stimuli (insulin, leptin, glucagon like peptide-1, growth hormone, prolactin) through kinase-dependent signalling pathways (PI3-K, p38MAPK, PKA, CaMK) modulating their affinities for DNA and/or for each other.
|
77 |
12032636
|
Human calcium/calmodulin-dependent protein kinase II gamma gene (CAMK2G): cloning, genomic structure and detection of variants in subjects with type II diabetes.
|
78 |
14565535
|
Calcium/calmodulin-dependent protein kinase II (CaMKII) has an important function in mediating insulin release but its role in the development of diabetes-induced cardiovascular complications is not known. 2.
|
79 |
14565535
|
The vasoconstrictor responses induced by noradrenaline (NE), endothelin-1 (ET-1), and angiotensin II (Ang II), were significantly increased whereas, vasodilator responses to carbachol and histamine were significantly reduced in the perfused mesenteric bed of the STZ-diabetic rats as compared with non-diabetic controls. 4.
|
80 |
15161751
|
RT-PCR, Western blotting, and immunohistochemical staining analysis revealed that CaM-K kinase-alpha (CaM-KKalpha) and CaM-KIV were localized in rat pancreatic beta-cells and their cell line, INS-1.
|
81 |
15235326
|
These DNA elements have been shown to bind the transcription factors myocyte enhancer factor 2 (MEF2) and GLUT4 enhancer factor (GEF).
|
82 |
15235326
|
Signals that link muscle contraction to the activation of transcription factors (MEF2, GEF) involved in increased expression of GLUT4 during exercise is another area needing further research.
|
83 |
15235326
|
Two signals that show promise are changes in the energy charge (acting through AMP activated kinase [AMPK]) and changes in intracellular calcium (acting through calcineurin [a calcium-calmodulin activated phosphatase] and calcium-calmodulin activated kinase [CAMK]).
|
84 |
15235326
|
There is good evidence that both increased AMPK activity and increased CAMK activity cause increased transcription of the GLUT4 gene.
|
85 |
15235326
|
These DNA elements have been shown to bind the transcription factors myocyte enhancer factor 2 (MEF2) and GLUT4 enhancer factor (GEF).
|
86 |
15235326
|
Signals that link muscle contraction to the activation of transcription factors (MEF2, GEF) involved in increased expression of GLUT4 during exercise is another area needing further research.
|
87 |
15235326
|
Two signals that show promise are changes in the energy charge (acting through AMP activated kinase [AMPK]) and changes in intracellular calcium (acting through calcineurin [a calcium-calmodulin activated phosphatase] and calcium-calmodulin activated kinase [CAMK]).
|
88 |
15235326
|
There is good evidence that both increased AMPK activity and increased CAMK activity cause increased transcription of the GLUT4 gene.
|
89 |
15362510
|
Increased inhibition of SERCA2 by phospholamban in the type I diabetic heart.
|
90 |
15362510
|
Depressed SR Ca2+-uptake was also due to a reduction in the phosphorylation of PLB by the Ca2+-calmodulin-dependent protein kinase (CaMK) and cAMP-dependent protein kinase (PKA).
|
91 |
15362510
|
Although the activities of the SR-associated Ca2+-calmodulin-dependent protein kinase (CaMK), cAMP-dependent protein kinase (PKA) were increased in the diabetic heart, depressed phosphorylation of PLB could partly be attributed to an increase in the SR-associated protein phosphatase activities.
|
92 |
15362510
|
Increased inhibition of SERCA2 by phospholamban in the type I diabetic heart.
|
93 |
15362510
|
Depressed SR Ca2+-uptake was also due to a reduction in the phosphorylation of PLB by the Ca2+-calmodulin-dependent protein kinase (CaMK) and cAMP-dependent protein kinase (PKA).
|
94 |
15362510
|
Although the activities of the SR-associated Ca2+-calmodulin-dependent protein kinase (CaMK), cAMP-dependent protein kinase (PKA) were increased in the diabetic heart, depressed phosphorylation of PLB could partly be attributed to an increase in the SR-associated protein phosphatase activities.
|
95 |
15886012
|
These data indicate that chronic blockade of CaMKII, Ras-GTPase or the production of 20-HETE normalizes the altered vascular reactivity to ET-1 and carbachol in the carotid artery of STZ-induced diabetic rats.
|
96 |
16009379
|
We have recently identified that protein kinases (CaMKII and PKC-alpha) and brain neurotransmitters are altered during diabetes as well as in hyperglycemic and acidotic conditions.
|
97 |
16554480
|
Human astrocytes are resistant to Fas ligand and tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis.
|
98 |
16554480
|
Here, we report that calcium/calmodulin-dependent protein kinase II (CaMKII) is constitutively activated in human astrocytes and protects the cells from apoptotic stimulation by Fas agonist.
|
99 |
16554480
|
Once stimulated, Fas recruits Fas-associated death domain and caspase-8 for the assembly of the death-inducing signaling complex (DISC); however, caspase-8 cleavage is inhibited in the DISC.
|
100 |
16554480
|
Inhibition of CaMKII kinase activity inhibits the expression of phosphoprotein enriched astrocytes-15 kDa/phosphoprotein enriched in diabetes (PEA-15/PED) and cellular Fas-associated death domain-like interleukin-1beta-converting enzyme-inhibitory protein (c-FLIP), thus releasing their inhibition of caspase-8 cleavage.
|
101 |
16554480
|
Inhibition of PEA-15/PED or c-FLIP by small interfering RNA sensitizes human astrocytes to Fas-induced apoptosis.
|
102 |
16554480
|
In contrast, inhibition of CaMKII, PEA-15, or c-FLIP does not affect the sensitivity of human astrocytes to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL).
|
103 |
16554480
|
TRAIL death receptors (DR4, DR5) are weakly expressed at mRNA, protein, and cell surface levels and thus fail to mediate the assembly of the DISC in human astrocytes.
|
104 |
16554480
|
Overexpression of DR5 restores TRAIL signaling pathways and sensitizes the human astrocytes to TRAIL-induced apoptosis if CaMKII kinase activity or expression of PEA-15 and c-FLIP is inhibited; the results suggest that CaMKII-mediated pathways prevent TRAIL-induced apoptosis in human astrocytes under conditions in which TRAIL death receptors are upregulated.
|
105 |
16554480
|
This study has therefore identified the molecular mechanisms that protect normal human astrocytes from apoptosis induced by Fas ligand and TRAIL.
|
106 |
16554480
|
Human astrocytes are resistant to Fas ligand and tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis.
|
107 |
16554480
|
Here, we report that calcium/calmodulin-dependent protein kinase II (CaMKII) is constitutively activated in human astrocytes and protects the cells from apoptotic stimulation by Fas agonist.
|
108 |
16554480
|
Once stimulated, Fas recruits Fas-associated death domain and caspase-8 for the assembly of the death-inducing signaling complex (DISC); however, caspase-8 cleavage is inhibited in the DISC.
|
109 |
16554480
|
Inhibition of CaMKII kinase activity inhibits the expression of phosphoprotein enriched astrocytes-15 kDa/phosphoprotein enriched in diabetes (PEA-15/PED) and cellular Fas-associated death domain-like interleukin-1beta-converting enzyme-inhibitory protein (c-FLIP), thus releasing their inhibition of caspase-8 cleavage.
|
110 |
16554480
|
Inhibition of PEA-15/PED or c-FLIP by small interfering RNA sensitizes human astrocytes to Fas-induced apoptosis.
|
111 |
16554480
|
In contrast, inhibition of CaMKII, PEA-15, or c-FLIP does not affect the sensitivity of human astrocytes to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL).
|
112 |
16554480
|
TRAIL death receptors (DR4, DR5) are weakly expressed at mRNA, protein, and cell surface levels and thus fail to mediate the assembly of the DISC in human astrocytes.
|
113 |
16554480
|
Overexpression of DR5 restores TRAIL signaling pathways and sensitizes the human astrocytes to TRAIL-induced apoptosis if CaMKII kinase activity or expression of PEA-15 and c-FLIP is inhibited; the results suggest that CaMKII-mediated pathways prevent TRAIL-induced apoptosis in human astrocytes under conditions in which TRAIL death receptors are upregulated.
|
114 |
16554480
|
This study has therefore identified the molecular mechanisms that protect normal human astrocytes from apoptosis induced by Fas ligand and TRAIL.
|
115 |
16554480
|
Human astrocytes are resistant to Fas ligand and tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis.
|
116 |
16554480
|
Here, we report that calcium/calmodulin-dependent protein kinase II (CaMKII) is constitutively activated in human astrocytes and protects the cells from apoptotic stimulation by Fas agonist.
|
117 |
16554480
|
Once stimulated, Fas recruits Fas-associated death domain and caspase-8 for the assembly of the death-inducing signaling complex (DISC); however, caspase-8 cleavage is inhibited in the DISC.
|
118 |
16554480
|
Inhibition of CaMKII kinase activity inhibits the expression of phosphoprotein enriched astrocytes-15 kDa/phosphoprotein enriched in diabetes (PEA-15/PED) and cellular Fas-associated death domain-like interleukin-1beta-converting enzyme-inhibitory protein (c-FLIP), thus releasing their inhibition of caspase-8 cleavage.
|
119 |
16554480
|
Inhibition of PEA-15/PED or c-FLIP by small interfering RNA sensitizes human astrocytes to Fas-induced apoptosis.
|
120 |
16554480
|
In contrast, inhibition of CaMKII, PEA-15, or c-FLIP does not affect the sensitivity of human astrocytes to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL).
|
121 |
16554480
|
TRAIL death receptors (DR4, DR5) are weakly expressed at mRNA, protein, and cell surface levels and thus fail to mediate the assembly of the DISC in human astrocytes.
|
122 |
16554480
|
Overexpression of DR5 restores TRAIL signaling pathways and sensitizes the human astrocytes to TRAIL-induced apoptosis if CaMKII kinase activity or expression of PEA-15 and c-FLIP is inhibited; the results suggest that CaMKII-mediated pathways prevent TRAIL-induced apoptosis in human astrocytes under conditions in which TRAIL death receptors are upregulated.
|
123 |
16554480
|
This study has therefore identified the molecular mechanisms that protect normal human astrocytes from apoptosis induced by Fas ligand and TRAIL.
|
124 |
16554480
|
Human astrocytes are resistant to Fas ligand and tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis.
|
125 |
16554480
|
Here, we report that calcium/calmodulin-dependent protein kinase II (CaMKII) is constitutively activated in human astrocytes and protects the cells from apoptotic stimulation by Fas agonist.
|
126 |
16554480
|
Once stimulated, Fas recruits Fas-associated death domain and caspase-8 for the assembly of the death-inducing signaling complex (DISC); however, caspase-8 cleavage is inhibited in the DISC.
|
127 |
16554480
|
Inhibition of CaMKII kinase activity inhibits the expression of phosphoprotein enriched astrocytes-15 kDa/phosphoprotein enriched in diabetes (PEA-15/PED) and cellular Fas-associated death domain-like interleukin-1beta-converting enzyme-inhibitory protein (c-FLIP), thus releasing their inhibition of caspase-8 cleavage.
|
128 |
16554480
|
Inhibition of PEA-15/PED or c-FLIP by small interfering RNA sensitizes human astrocytes to Fas-induced apoptosis.
|
129 |
16554480
|
In contrast, inhibition of CaMKII, PEA-15, or c-FLIP does not affect the sensitivity of human astrocytes to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL).
|
130 |
16554480
|
TRAIL death receptors (DR4, DR5) are weakly expressed at mRNA, protein, and cell surface levels and thus fail to mediate the assembly of the DISC in human astrocytes.
|
131 |
16554480
|
Overexpression of DR5 restores TRAIL signaling pathways and sensitizes the human astrocytes to TRAIL-induced apoptosis if CaMKII kinase activity or expression of PEA-15 and c-FLIP is inhibited; the results suggest that CaMKII-mediated pathways prevent TRAIL-induced apoptosis in human astrocytes under conditions in which TRAIL death receptors are upregulated.
|
132 |
16554480
|
This study has therefore identified the molecular mechanisms that protect normal human astrocytes from apoptosis induced by Fas ligand and TRAIL.
|
133 |
17227770
|
TPA effect was also prevented by antisense inhibition of protein kinase C (PKC)-zeta and by the expression of a dominant-negative PKC-zeta mutant cDNA in HEK293 cells.
|
134 |
17227770
|
Similar to long term TPA treatment, overexpression of wild-type PKC-zeta increased cellular content and phosphorylation of WT-PED/PEA-15 and PED(S104G) but not of PED(S116G).
|
135 |
17227770
|
At variance, the proteasome inhibitor lactacystin mimicked TPA action on PED/PEA-15 intracellular accumulation and reverted the effects of PKC-zeta and CaMK inhibition.
|
136 |
17227770
|
Moreover, we show that PED/PEA-15 bound ubiquitin in intact cells.
|
137 |
17227770
|
PED/PEA-15 ubiquitinylation was reduced by TPA and PKC-zeta overexpression and increased by KN-93 and PKC-zeta block.
|
138 |
17227770
|
Furthermore, in HEK293 cells expressing PED(S116G), TPA failed to prevent ubiquitin-dependent degradation of the protein.
|
139 |
18059607
|
Regularly performed aerobic exercise leads to increases in skeletal muscle mitochondria and glucose transporter 4 (GLUT4) protein content, resulting in an enhanced capacity to oxidize substrates and improvements in insulin- and contraction-mediated glucose uptake.
|
140 |
18059607
|
Treating L6 muscle cells with agents that increase Ca2+ without causing reductions in ~P or the activation of 5'-AMP-activated protein kinase leads to increases in GLUT4 and mitochondrial protein contents.
|
141 |
18059607
|
Recent findings provide evidence that the activation of p38 mitogen-activated protein kinase (MAPK) is involved in the pathway through which Ca2+/CaMK mediates mitochondrial and GLUT4 biogenesis. p38 MAPK initiates GLUT4 and mitochondrial biogenesis through the activation of transcription factors and transcriptional coactivators such as myocyte enhancer factor 2 (MEF2) and peroxisome proliferator-activated receptor gamma coactivator 1 alpha (PGC-1 alpha).
|
142 |
18059607
|
Since decreases in mitochondrial and GLUT4 contents are associated with skeletal muscle insulin resistance, an understanding of the mechanisms by which these processes can be normalized will aid in the prevention and treatment of type 2 diabetes.
|
143 |
18703049
|
Protein kinase A (PKA) and calcium/calmodulin dependent protein kinase II (CAMK-II) activities, as well as Akt phosphorylation, were measured as indices of downstream target activation.
|
144 |
18703049
|
Akt-mediated phosphorylation of endothelial nitric oxide synthase (eNOS) was not altered, but phosphorylation of the transcription factor FOXO-3 was increased.
|
145 |
18703049
|
Metoprolol increased the expression of beta(1), beta(2) and beta(3) adrenoceptors, associated with repression of FOXO-3 expression. beta-adrenoceptor signaling shifted from PKA to Akt-mediated signaling, associated with phosphorylation of FOXO-3 but not eNOS.
|
146 |
18711746
|
Our previous studies have shown that serotonin (5-HT) altered under diabetic condition was accompanied by alterations of protein kinase C-alpha (PKC-alpha) and CaMKII, and those alterations were reversed after insulin administration.
|
147 |
18711746
|
The current study showed that alloxan-induced diabetic animals revealed hyperglycemia and was associated with an increase in the content of 5-HT, PKC-alpha expression and PKC activity (P < 0.05) simultaneously in striatum (ST), midbrain (MB), pons medulla (PM), cerebellum (CB), and cerebral cortex (CCX) from 7 days to 60 days.
|
148 |
18711746
|
Although the 5-HT levels in hippocampus (HC) and hypothalamus (HT) were not altered, the PKC-alpha expression and PKC activity showed increases (P < 0.05) in level in HC.
|
149 |
18711746
|
In contrast, the in vitro study has shown that the 5-HT levels correlated with PKC-alpha expressions as well as PKC activity (P < 0.05) only in ST, MB, and CB either after induction with phorbol 12-myristate 13-acetate (PMA) or blocking with chelerythrine, whereas PM and CCX remained elevated (P < 0.05), implying a regulatory role for PKC-alpha only in ST, MB, and CB.
|
150 |
18711746
|
However, our consecutive studies have shown that the 5-HT level in PM was regulated by p38-mitogen-activated protein kinase (p38-MAPK) both in vivo and in vitro, whereas the 5-HT level in CCX was coregulated by S-100beta by protein-protein interaction with serotonin transporter (SERT) via 8-bromoadenosine 3',5'-cyclic monophosphate sodium salt (8-Br-cAMP)-induced cAMP/PKAII pathway(s).
|
151 |
19131475
|
ExT also normalized the responsiveness of RyR2 to Ca(2+) activation, attenuated increases in RyR2 phosphorylation at Ser(2808) and Ser(2814), and normalized CaMKII and PKA activities.
|
152 |
19188609
|
Protection of synapses against Alzheimer's-linked toxins: insulin signaling prevents the pathogenic binding of Abeta oligomers.
|
153 |
19188609
|
Synapse deterioration underlying severe memory loss in early Alzheimer's disease (AD) is thought to be caused by soluble amyloid beta (Abeta) oligomers.
|
154 |
19188609
|
Before spine loss, ADDLs caused major downregulation of plasma membrane insulin receptors (IRs), via a mechanism sensitive to calcium calmodulin-dependent kinase II (CaMKII) and casein kinase II (CK2) inhibition.
|
155 |
19531639
|
PED/PEA-15 is an endogenous substrate for protein kinase C (PKC), calcium/calmodulin-dependent protein kinase II (CAM kinase II), and Akt.
|
156 |
19531639
|
In particular, PKC phosphorylates PED/PEA-15 at Ser(104) and CAM kinase II or Akt at Ser(116), modifying its stability.
|
157 |
19531639
|
Indeed, PED/PEA-15 has been identified as an ERK1/2 interactor, which modifies its subcellular localization and targeting to a specific subset of substrates.
|
158 |
19531639
|
PED/PEA-15 is an endogenous substrate for protein kinase C (PKC), calcium/calmodulin-dependent protein kinase II (CAM kinase II), and Akt.
|
159 |
19531639
|
In particular, PKC phosphorylates PED/PEA-15 at Ser(104) and CAM kinase II or Akt at Ser(116), modifying its stability.
|
160 |
19531639
|
Indeed, PED/PEA-15 has been identified as an ERK1/2 interactor, which modifies its subcellular localization and targeting to a specific subset of substrates.
|
161 |
20215576
|
CaMKII regulates contraction- but not insulin-induced glucose uptake in mouse skeletal muscle.
|
162 |
20215576
|
Studies using chemical inhibitors have suggested that the Ca(2+)-sensitive serine/threonine kinase Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is a key regulator of both insulin- and contraction-stimulated glucose uptake in skeletal muscle.
|
163 |
20215576
|
We sought to determine whether specific inhibition of CaMKII impairs insulin- and/or contraction-induced glucose uptake in mouse skeletal muscle.
|
164 |
20215576
|
After 1 wk, muscles were assessed for peptide expression, CaMK activity, insulin- and contraction-induced 2-[(3)H]deoxyglucose uptake, glycogen concentrations, and changes in intracellular signaling proteins.
|
165 |
20215576
|
The CaMKII inhibitory peptide did not alter expression of the glucose transporter GLUT4 and did not impair contraction-induced increases in the phosphorylation of AMP-activated protein kinase (Thr(172)) or TBC1D1/TBC1D4 on phospho-Akt substrate sites.
|
166 |
20215576
|
These results demonstrate that CaMKII does not regulate insulin-stimulated glucose uptake in skeletal muscle.
|
167 |
20215576
|
CaMKII regulates contraction- but not insulin-induced glucose uptake in mouse skeletal muscle.
|
168 |
20215576
|
Studies using chemical inhibitors have suggested that the Ca(2+)-sensitive serine/threonine kinase Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is a key regulator of both insulin- and contraction-stimulated glucose uptake in skeletal muscle.
|
169 |
20215576
|
We sought to determine whether specific inhibition of CaMKII impairs insulin- and/or contraction-induced glucose uptake in mouse skeletal muscle.
|
170 |
20215576
|
After 1 wk, muscles were assessed for peptide expression, CaMK activity, insulin- and contraction-induced 2-[(3)H]deoxyglucose uptake, glycogen concentrations, and changes in intracellular signaling proteins.
|
171 |
20215576
|
The CaMKII inhibitory peptide did not alter expression of the glucose transporter GLUT4 and did not impair contraction-induced increases in the phosphorylation of AMP-activated protein kinase (Thr(172)) or TBC1D1/TBC1D4 on phospho-Akt substrate sites.
|
172 |
20215576
|
These results demonstrate that CaMKII does not regulate insulin-stimulated glucose uptake in skeletal muscle.
|
173 |
20215576
|
CaMKII regulates contraction- but not insulin-induced glucose uptake in mouse skeletal muscle.
|
174 |
20215576
|
Studies using chemical inhibitors have suggested that the Ca(2+)-sensitive serine/threonine kinase Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is a key regulator of both insulin- and contraction-stimulated glucose uptake in skeletal muscle.
|
175 |
20215576
|
We sought to determine whether specific inhibition of CaMKII impairs insulin- and/or contraction-induced glucose uptake in mouse skeletal muscle.
|
176 |
20215576
|
After 1 wk, muscles were assessed for peptide expression, CaMK activity, insulin- and contraction-induced 2-[(3)H]deoxyglucose uptake, glycogen concentrations, and changes in intracellular signaling proteins.
|
177 |
20215576
|
The CaMKII inhibitory peptide did not alter expression of the glucose transporter GLUT4 and did not impair contraction-induced increases in the phosphorylation of AMP-activated protein kinase (Thr(172)) or TBC1D1/TBC1D4 on phospho-Akt substrate sites.
|
178 |
20215576
|
These results demonstrate that CaMKII does not regulate insulin-stimulated glucose uptake in skeletal muscle.
|
179 |
20215576
|
CaMKII regulates contraction- but not insulin-induced glucose uptake in mouse skeletal muscle.
|
180 |
20215576
|
Studies using chemical inhibitors have suggested that the Ca(2+)-sensitive serine/threonine kinase Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is a key regulator of both insulin- and contraction-stimulated glucose uptake in skeletal muscle.
|
181 |
20215576
|
We sought to determine whether specific inhibition of CaMKII impairs insulin- and/or contraction-induced glucose uptake in mouse skeletal muscle.
|
182 |
20215576
|
After 1 wk, muscles were assessed for peptide expression, CaMK activity, insulin- and contraction-induced 2-[(3)H]deoxyglucose uptake, glycogen concentrations, and changes in intracellular signaling proteins.
|
183 |
20215576
|
The CaMKII inhibitory peptide did not alter expression of the glucose transporter GLUT4 and did not impair contraction-induced increases in the phosphorylation of AMP-activated protein kinase (Thr(172)) or TBC1D1/TBC1D4 on phospho-Akt substrate sites.
|
184 |
20215576
|
These results demonstrate that CaMKII does not regulate insulin-stimulated glucose uptake in skeletal muscle.
|
185 |
20215576
|
CaMKII regulates contraction- but not insulin-induced glucose uptake in mouse skeletal muscle.
|
186 |
20215576
|
Studies using chemical inhibitors have suggested that the Ca(2+)-sensitive serine/threonine kinase Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is a key regulator of both insulin- and contraction-stimulated glucose uptake in skeletal muscle.
|
187 |
20215576
|
We sought to determine whether specific inhibition of CaMKII impairs insulin- and/or contraction-induced glucose uptake in mouse skeletal muscle.
|
188 |
20215576
|
After 1 wk, muscles were assessed for peptide expression, CaMK activity, insulin- and contraction-induced 2-[(3)H]deoxyglucose uptake, glycogen concentrations, and changes in intracellular signaling proteins.
|
189 |
20215576
|
The CaMKII inhibitory peptide did not alter expression of the glucose transporter GLUT4 and did not impair contraction-induced increases in the phosphorylation of AMP-activated protein kinase (Thr(172)) or TBC1D1/TBC1D4 on phospho-Akt substrate sites.
|
190 |
20215576
|
These results demonstrate that CaMKII does not regulate insulin-stimulated glucose uptake in skeletal muscle.
|
191 |
20215576
|
CaMKII regulates contraction- but not insulin-induced glucose uptake in mouse skeletal muscle.
|
192 |
20215576
|
Studies using chemical inhibitors have suggested that the Ca(2+)-sensitive serine/threonine kinase Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) is a key regulator of both insulin- and contraction-stimulated glucose uptake in skeletal muscle.
|
193 |
20215576
|
We sought to determine whether specific inhibition of CaMKII impairs insulin- and/or contraction-induced glucose uptake in mouse skeletal muscle.
|
194 |
20215576
|
After 1 wk, muscles were assessed for peptide expression, CaMK activity, insulin- and contraction-induced 2-[(3)H]deoxyglucose uptake, glycogen concentrations, and changes in intracellular signaling proteins.
|
195 |
20215576
|
The CaMKII inhibitory peptide did not alter expression of the glucose transporter GLUT4 and did not impair contraction-induced increases in the phosphorylation of AMP-activated protein kinase (Thr(172)) or TBC1D1/TBC1D4 on phospho-Akt substrate sites.
|
196 |
20215576
|
These results demonstrate that CaMKII does not regulate insulin-stimulated glucose uptake in skeletal muscle.
|
197 |
20512929
|
Our findings also demonstrate that berberine significantly down-regulates LPS- or interferon (IFN)-gamma-induced nitric oxide synthase (iNOS) and cyclo-oxygenase-2 (COX-2) expression in BV-2 microglia cells.
|
198 |
20512929
|
Berberine also inhibited LPS- or IFN-gamma-induced nitric oxide production.
|
199 |
20512929
|
In addition, berberine effectively inhibited proinflammatory cytokines such as TNF-alpha, IL-1beta, and IL-6 expression.
|
200 |
20512929
|
On the other hand, upon various inflammatory stimulus including LPS and IFN-gamma, berberine suppressed the phosphorylated of ERK but not p38 and JNK in BV-2 microglia.
|
201 |
20512929
|
AMPK activation is catalyzed by upstream kinases such as LKB1 and Ca2+/calmodulin-dependent protein kinase kinase-II (CaMKK II).
|
202 |
20512929
|
Moreover, berberine induced LKB1 (Ser428), CaMKII (Thr286), and AMPK (Thr172) phosphorylation, but not AMPK (Ser485).
|
203 |
20512929
|
Furthermore, the inhibitory effect of berberine on iNOS and COX-2 expression was abolished by AMPK inhibition via Compound C, an AMPK inhibitor.
|
204 |
21331776
|
Inducible nitric oxide synthase (iNOS) is an essential mediator in diabetic vascular lesions and known to be regulated by activation of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII).
|
205 |
21331776
|
The aim of this study was to investigate whether CaMKII affects iNOS-mediated pericyte death in the retina of diabetic mice with early stage disease.
|
206 |
21331776
|
Total- and phospho-CaMKII, iNOS, and active caspase-3 protein levels were assessed by Western blotting, and CaMKII activity was measured by kinase assay. iNOS-related pericyte death was assessed by double immunofluorescent staining for iNOS and α-smooth muscle actin, followed by the TUNEL assay.
|
207 |
21331776
|
Autocamtide-2-related inhibitory peptide (AIP), a specific inhibitor of CaMKII, was injected into the right vitreous 2 days before sacrifice of mice, to examine the effect of CaMKII inactivation in diabetic retinas.
|
208 |
21331776
|
The levels of total- and phospho-CaMKII, iNOS, and active caspase-3 protein, and CaMKII activity were significantly increased in the diabetic retinas compared with those of control retinas.
|
209 |
21331776
|
However, inactivation of CaMKII by AIP treatment inhibited all these changes, which was accompanied by less pericyte loss.
|
210 |
21331776
|
Our results demonstrate that CaMKII contributes to iNOS-related death of pericytes in the diabetic retina and that inactivation of this enzyme may be a potential treatment for retinal vascular lesion.
|
211 |
21331776
|
Inducible nitric oxide synthase (iNOS) is an essential mediator in diabetic vascular lesions and known to be regulated by activation of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII).
|
212 |
21331776
|
The aim of this study was to investigate whether CaMKII affects iNOS-mediated pericyte death in the retina of diabetic mice with early stage disease.
|
213 |
21331776
|
Total- and phospho-CaMKII, iNOS, and active caspase-3 protein levels were assessed by Western blotting, and CaMKII activity was measured by kinase assay. iNOS-related pericyte death was assessed by double immunofluorescent staining for iNOS and α-smooth muscle actin, followed by the TUNEL assay.
|
214 |
21331776
|
Autocamtide-2-related inhibitory peptide (AIP), a specific inhibitor of CaMKII, was injected into the right vitreous 2 days before sacrifice of mice, to examine the effect of CaMKII inactivation in diabetic retinas.
|
215 |
21331776
|
The levels of total- and phospho-CaMKII, iNOS, and active caspase-3 protein, and CaMKII activity were significantly increased in the diabetic retinas compared with those of control retinas.
|
216 |
21331776
|
However, inactivation of CaMKII by AIP treatment inhibited all these changes, which was accompanied by less pericyte loss.
|
217 |
21331776
|
Our results demonstrate that CaMKII contributes to iNOS-related death of pericytes in the diabetic retina and that inactivation of this enzyme may be a potential treatment for retinal vascular lesion.
|
218 |
21331776
|
Inducible nitric oxide synthase (iNOS) is an essential mediator in diabetic vascular lesions and known to be regulated by activation of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII).
|
219 |
21331776
|
The aim of this study was to investigate whether CaMKII affects iNOS-mediated pericyte death in the retina of diabetic mice with early stage disease.
|
220 |
21331776
|
Total- and phospho-CaMKII, iNOS, and active caspase-3 protein levels were assessed by Western blotting, and CaMKII activity was measured by kinase assay. iNOS-related pericyte death was assessed by double immunofluorescent staining for iNOS and α-smooth muscle actin, followed by the TUNEL assay.
|
221 |
21331776
|
Autocamtide-2-related inhibitory peptide (AIP), a specific inhibitor of CaMKII, was injected into the right vitreous 2 days before sacrifice of mice, to examine the effect of CaMKII inactivation in diabetic retinas.
|
222 |
21331776
|
The levels of total- and phospho-CaMKII, iNOS, and active caspase-3 protein, and CaMKII activity were significantly increased in the diabetic retinas compared with those of control retinas.
|
223 |
21331776
|
However, inactivation of CaMKII by AIP treatment inhibited all these changes, which was accompanied by less pericyte loss.
|
224 |
21331776
|
Our results demonstrate that CaMKII contributes to iNOS-related death of pericytes in the diabetic retina and that inactivation of this enzyme may be a potential treatment for retinal vascular lesion.
|
225 |
21331776
|
Inducible nitric oxide synthase (iNOS) is an essential mediator in diabetic vascular lesions and known to be regulated by activation of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII).
|
226 |
21331776
|
The aim of this study was to investigate whether CaMKII affects iNOS-mediated pericyte death in the retina of diabetic mice with early stage disease.
|
227 |
21331776
|
Total- and phospho-CaMKII, iNOS, and active caspase-3 protein levels were assessed by Western blotting, and CaMKII activity was measured by kinase assay. iNOS-related pericyte death was assessed by double immunofluorescent staining for iNOS and α-smooth muscle actin, followed by the TUNEL assay.
|
228 |
21331776
|
Autocamtide-2-related inhibitory peptide (AIP), a specific inhibitor of CaMKII, was injected into the right vitreous 2 days before sacrifice of mice, to examine the effect of CaMKII inactivation in diabetic retinas.
|
229 |
21331776
|
The levels of total- and phospho-CaMKII, iNOS, and active caspase-3 protein, and CaMKII activity were significantly increased in the diabetic retinas compared with those of control retinas.
|
230 |
21331776
|
However, inactivation of CaMKII by AIP treatment inhibited all these changes, which was accompanied by less pericyte loss.
|
231 |
21331776
|
Our results demonstrate that CaMKII contributes to iNOS-related death of pericytes in the diabetic retina and that inactivation of this enzyme may be a potential treatment for retinal vascular lesion.
|
232 |
21331776
|
Inducible nitric oxide synthase (iNOS) is an essential mediator in diabetic vascular lesions and known to be regulated by activation of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII).
|
233 |
21331776
|
The aim of this study was to investigate whether CaMKII affects iNOS-mediated pericyte death in the retina of diabetic mice with early stage disease.
|
234 |
21331776
|
Total- and phospho-CaMKII, iNOS, and active caspase-3 protein levels were assessed by Western blotting, and CaMKII activity was measured by kinase assay. iNOS-related pericyte death was assessed by double immunofluorescent staining for iNOS and α-smooth muscle actin, followed by the TUNEL assay.
|
235 |
21331776
|
Autocamtide-2-related inhibitory peptide (AIP), a specific inhibitor of CaMKII, was injected into the right vitreous 2 days before sacrifice of mice, to examine the effect of CaMKII inactivation in diabetic retinas.
|
236 |
21331776
|
The levels of total- and phospho-CaMKII, iNOS, and active caspase-3 protein, and CaMKII activity were significantly increased in the diabetic retinas compared with those of control retinas.
|
237 |
21331776
|
However, inactivation of CaMKII by AIP treatment inhibited all these changes, which was accompanied by less pericyte loss.
|
238 |
21331776
|
Our results demonstrate that CaMKII contributes to iNOS-related death of pericytes in the diabetic retina and that inactivation of this enzyme may be a potential treatment for retinal vascular lesion.
|
239 |
21331776
|
Inducible nitric oxide synthase (iNOS) is an essential mediator in diabetic vascular lesions and known to be regulated by activation of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII).
|
240 |
21331776
|
The aim of this study was to investigate whether CaMKII affects iNOS-mediated pericyte death in the retina of diabetic mice with early stage disease.
|
241 |
21331776
|
Total- and phospho-CaMKII, iNOS, and active caspase-3 protein levels were assessed by Western blotting, and CaMKII activity was measured by kinase assay. iNOS-related pericyte death was assessed by double immunofluorescent staining for iNOS and α-smooth muscle actin, followed by the TUNEL assay.
|
242 |
21331776
|
Autocamtide-2-related inhibitory peptide (AIP), a specific inhibitor of CaMKII, was injected into the right vitreous 2 days before sacrifice of mice, to examine the effect of CaMKII inactivation in diabetic retinas.
|
243 |
21331776
|
The levels of total- and phospho-CaMKII, iNOS, and active caspase-3 protein, and CaMKII activity were significantly increased in the diabetic retinas compared with those of control retinas.
|
244 |
21331776
|
However, inactivation of CaMKII by AIP treatment inhibited all these changes, which was accompanied by less pericyte loss.
|
245 |
21331776
|
Our results demonstrate that CaMKII contributes to iNOS-related death of pericytes in the diabetic retina and that inactivation of this enzyme may be a potential treatment for retinal vascular lesion.
|
246 |
21331776
|
Inducible nitric oxide synthase (iNOS) is an essential mediator in diabetic vascular lesions and known to be regulated by activation of Ca(2+)/calmodulin-dependent protein kinase II (CaMKII).
|
247 |
21331776
|
The aim of this study was to investigate whether CaMKII affects iNOS-mediated pericyte death in the retina of diabetic mice with early stage disease.
|
248 |
21331776
|
Total- and phospho-CaMKII, iNOS, and active caspase-3 protein levels were assessed by Western blotting, and CaMKII activity was measured by kinase assay. iNOS-related pericyte death was assessed by double immunofluorescent staining for iNOS and α-smooth muscle actin, followed by the TUNEL assay.
|
249 |
21331776
|
Autocamtide-2-related inhibitory peptide (AIP), a specific inhibitor of CaMKII, was injected into the right vitreous 2 days before sacrifice of mice, to examine the effect of CaMKII inactivation in diabetic retinas.
|
250 |
21331776
|
The levels of total- and phospho-CaMKII, iNOS, and active caspase-3 protein, and CaMKII activity were significantly increased in the diabetic retinas compared with those of control retinas.
|
251 |
21331776
|
However, inactivation of CaMKII by AIP treatment inhibited all these changes, which was accompanied by less pericyte loss.
|
252 |
21331776
|
Our results demonstrate that CaMKII contributes to iNOS-related death of pericytes in the diabetic retina and that inactivation of this enzyme may be a potential treatment for retinal vascular lesion.
|
253 |
22860017
|
Full-length RAGE, a cell surface-located type I membrane protein, can proteolytically be converted by metalloproteinases ADAM10 and MMP9 into a soluble RAGE form.
|
254 |
22860017
|
We chose three different GPCRs coupled to distinct signaling cascades: the V2 vasopressin receptor (V2R) activating adenylyl cyclase, the oxytocin receptor (OTR) linked to phospholipase Cβ, and the PACAP receptor (subtype PAC1) coupled to adenylyl cyclase, phospholipase Cβ, calcium signaling and MAP kinases.
|
255 |
22860017
|
We generated HEK cell lines stably coexpressing an individual GPCR and full-length RAGE and then investigated GPCR ligand-induced activation of RAGE shedding.
|
256 |
22860017
|
By using specific inhibitors we have identified Ca(2+) signaling, PKCα/PKCβI, CaMKII, PI3 kinases and MAP kinases to be involved in PAC1 receptor-induced RAGE shedding.
|
257 |
22860017
|
Furthermore, by using a selective metalloproteinase inhibitor and siRNA-mediated knock-down approaches, we show that ADAM10 and/or MMP9 are playing important roles in constitutive and PACAP-induced RAGE shedding.
|
258 |
23267764
|
Sex differences in pain-related behavior and expression of calcium/calmodulin dependent protein kinase II (CaMKII) in dorsal root ganglia were studied in rat models of Diabetes mellitus type 1 (DM1) and type 2 (DM2).
|
259 |
23395857
|
Also, rutin-induced glucose uptake via CaMKII may result in GLUT-4 translocation to the plasma membrane, characterizing an insulin-independent pathway.
|
260 |
23516528
|
Effects of CaMKII-mediated phosphorylation of ryanodine receptor type 2 on islet calcium handling, insulin secretion, and glucose tolerance.
|
261 |
23516528
|
This elevation in [Ca(2+)]cyt leads to activation of Ca(2+)/calmodulin-dependent protein kinase II (CAMKII), which, in turn, controls multiple aspects of insulin secretion.
|
262 |
23516528
|
CaMKII is known to phosphorylate ryanodine receptor 2 (RyR2), an intracellular Ca(2+)-release channel implicated in Ca(2+)-dependent steps of insulin secretion.
|
263 |
23516528
|
Our data show that RyR2 is CaMKII phosphorylated in a pancreatic β-cell line in a glucose-sensitive manner.
|
264 |
23516528
|
However, it is not clear whether any change in CaMKII-mediated phosphorylation underlies abnormal RyR2 function in β cells and whether such a change contributes to alterations in insulin secretion.
|
265 |
23516528
|
Therefore, knock-in mice with a mutation in RyR2 that mimics its constitutive CaMKII phosphorylation, RyR2-S2814D, were studied.
|
266 |
23516528
|
These observations were supported by immunohistochemical analyses of islets in diabetic human and mouse pancreata that revealed significantly enhanced CaMKII phosphorylation of RyR2 in type 2 diabetes.
|
267 |
23516528
|
Together, these studies implicate that the chronic gain-of-function defect in RyR2 due to CaMKII hyperphosphorylation is a novel mechanism that contributes to pathogenesis of type 2 diabetes.
|
268 |
23516528
|
Effects of CaMKII-mediated phosphorylation of ryanodine receptor type 2 on islet calcium handling, insulin secretion, and glucose tolerance.
|
269 |
23516528
|
This elevation in [Ca(2+)]cyt leads to activation of Ca(2+)/calmodulin-dependent protein kinase II (CAMKII), which, in turn, controls multiple aspects of insulin secretion.
|
270 |
23516528
|
CaMKII is known to phosphorylate ryanodine receptor 2 (RyR2), an intracellular Ca(2+)-release channel implicated in Ca(2+)-dependent steps of insulin secretion.
|
271 |
23516528
|
Our data show that RyR2 is CaMKII phosphorylated in a pancreatic β-cell line in a glucose-sensitive manner.
|
272 |
23516528
|
However, it is not clear whether any change in CaMKII-mediated phosphorylation underlies abnormal RyR2 function in β cells and whether such a change contributes to alterations in insulin secretion.
|
273 |
23516528
|
Therefore, knock-in mice with a mutation in RyR2 that mimics its constitutive CaMKII phosphorylation, RyR2-S2814D, were studied.
|
274 |
23516528
|
These observations were supported by immunohistochemical analyses of islets in diabetic human and mouse pancreata that revealed significantly enhanced CaMKII phosphorylation of RyR2 in type 2 diabetes.
|
275 |
23516528
|
Together, these studies implicate that the chronic gain-of-function defect in RyR2 due to CaMKII hyperphosphorylation is a novel mechanism that contributes to pathogenesis of type 2 diabetes.
|
276 |
23516528
|
Effects of CaMKII-mediated phosphorylation of ryanodine receptor type 2 on islet calcium handling, insulin secretion, and glucose tolerance.
|
277 |
23516528
|
This elevation in [Ca(2+)]cyt leads to activation of Ca(2+)/calmodulin-dependent protein kinase II (CAMKII), which, in turn, controls multiple aspects of insulin secretion.
|
278 |
23516528
|
CaMKII is known to phosphorylate ryanodine receptor 2 (RyR2), an intracellular Ca(2+)-release channel implicated in Ca(2+)-dependent steps of insulin secretion.
|
279 |
23516528
|
Our data show that RyR2 is CaMKII phosphorylated in a pancreatic β-cell line in a glucose-sensitive manner.
|
280 |
23516528
|
However, it is not clear whether any change in CaMKII-mediated phosphorylation underlies abnormal RyR2 function in β cells and whether such a change contributes to alterations in insulin secretion.
|
281 |
23516528
|
Therefore, knock-in mice with a mutation in RyR2 that mimics its constitutive CaMKII phosphorylation, RyR2-S2814D, were studied.
|
282 |
23516528
|
These observations were supported by immunohistochemical analyses of islets in diabetic human and mouse pancreata that revealed significantly enhanced CaMKII phosphorylation of RyR2 in type 2 diabetes.
|
283 |
23516528
|
Together, these studies implicate that the chronic gain-of-function defect in RyR2 due to CaMKII hyperphosphorylation is a novel mechanism that contributes to pathogenesis of type 2 diabetes.
|
284 |
23516528
|
Effects of CaMKII-mediated phosphorylation of ryanodine receptor type 2 on islet calcium handling, insulin secretion, and glucose tolerance.
|
285 |
23516528
|
This elevation in [Ca(2+)]cyt leads to activation of Ca(2+)/calmodulin-dependent protein kinase II (CAMKII), which, in turn, controls multiple aspects of insulin secretion.
|
286 |
23516528
|
CaMKII is known to phosphorylate ryanodine receptor 2 (RyR2), an intracellular Ca(2+)-release channel implicated in Ca(2+)-dependent steps of insulin secretion.
|
287 |
23516528
|
Our data show that RyR2 is CaMKII phosphorylated in a pancreatic β-cell line in a glucose-sensitive manner.
|
288 |
23516528
|
However, it is not clear whether any change in CaMKII-mediated phosphorylation underlies abnormal RyR2 function in β cells and whether such a change contributes to alterations in insulin secretion.
|
289 |
23516528
|
Therefore, knock-in mice with a mutation in RyR2 that mimics its constitutive CaMKII phosphorylation, RyR2-S2814D, were studied.
|
290 |
23516528
|
These observations were supported by immunohistochemical analyses of islets in diabetic human and mouse pancreata that revealed significantly enhanced CaMKII phosphorylation of RyR2 in type 2 diabetes.
|
291 |
23516528
|
Together, these studies implicate that the chronic gain-of-function defect in RyR2 due to CaMKII hyperphosphorylation is a novel mechanism that contributes to pathogenesis of type 2 diabetes.
|
292 |
23516528
|
Effects of CaMKII-mediated phosphorylation of ryanodine receptor type 2 on islet calcium handling, insulin secretion, and glucose tolerance.
|
293 |
23516528
|
This elevation in [Ca(2+)]cyt leads to activation of Ca(2+)/calmodulin-dependent protein kinase II (CAMKII), which, in turn, controls multiple aspects of insulin secretion.
|
294 |
23516528
|
CaMKII is known to phosphorylate ryanodine receptor 2 (RyR2), an intracellular Ca(2+)-release channel implicated in Ca(2+)-dependent steps of insulin secretion.
|
295 |
23516528
|
Our data show that RyR2 is CaMKII phosphorylated in a pancreatic β-cell line in a glucose-sensitive manner.
|
296 |
23516528
|
However, it is not clear whether any change in CaMKII-mediated phosphorylation underlies abnormal RyR2 function in β cells and whether such a change contributes to alterations in insulin secretion.
|
297 |
23516528
|
Therefore, knock-in mice with a mutation in RyR2 that mimics its constitutive CaMKII phosphorylation, RyR2-S2814D, were studied.
|
298 |
23516528
|
These observations were supported by immunohistochemical analyses of islets in diabetic human and mouse pancreata that revealed significantly enhanced CaMKII phosphorylation of RyR2 in type 2 diabetes.
|
299 |
23516528
|
Together, these studies implicate that the chronic gain-of-function defect in RyR2 due to CaMKII hyperphosphorylation is a novel mechanism that contributes to pathogenesis of type 2 diabetes.
|
300 |
23516528
|
Effects of CaMKII-mediated phosphorylation of ryanodine receptor type 2 on islet calcium handling, insulin secretion, and glucose tolerance.
|
301 |
23516528
|
This elevation in [Ca(2+)]cyt leads to activation of Ca(2+)/calmodulin-dependent protein kinase II (CAMKII), which, in turn, controls multiple aspects of insulin secretion.
|
302 |
23516528
|
CaMKII is known to phosphorylate ryanodine receptor 2 (RyR2), an intracellular Ca(2+)-release channel implicated in Ca(2+)-dependent steps of insulin secretion.
|
303 |
23516528
|
Our data show that RyR2 is CaMKII phosphorylated in a pancreatic β-cell line in a glucose-sensitive manner.
|
304 |
23516528
|
However, it is not clear whether any change in CaMKII-mediated phosphorylation underlies abnormal RyR2 function in β cells and whether such a change contributes to alterations in insulin secretion.
|
305 |
23516528
|
Therefore, knock-in mice with a mutation in RyR2 that mimics its constitutive CaMKII phosphorylation, RyR2-S2814D, were studied.
|
306 |
23516528
|
These observations were supported by immunohistochemical analyses of islets in diabetic human and mouse pancreata that revealed significantly enhanced CaMKII phosphorylation of RyR2 in type 2 diabetes.
|
307 |
23516528
|
Together, these studies implicate that the chronic gain-of-function defect in RyR2 due to CaMKII hyperphosphorylation is a novel mechanism that contributes to pathogenesis of type 2 diabetes.
|
308 |
23516528
|
Effects of CaMKII-mediated phosphorylation of ryanodine receptor type 2 on islet calcium handling, insulin secretion, and glucose tolerance.
|
309 |
23516528
|
This elevation in [Ca(2+)]cyt leads to activation of Ca(2+)/calmodulin-dependent protein kinase II (CAMKII), which, in turn, controls multiple aspects of insulin secretion.
|
310 |
23516528
|
CaMKII is known to phosphorylate ryanodine receptor 2 (RyR2), an intracellular Ca(2+)-release channel implicated in Ca(2+)-dependent steps of insulin secretion.
|
311 |
23516528
|
Our data show that RyR2 is CaMKII phosphorylated in a pancreatic β-cell line in a glucose-sensitive manner.
|
312 |
23516528
|
However, it is not clear whether any change in CaMKII-mediated phosphorylation underlies abnormal RyR2 function in β cells and whether such a change contributes to alterations in insulin secretion.
|
313 |
23516528
|
Therefore, knock-in mice with a mutation in RyR2 that mimics its constitutive CaMKII phosphorylation, RyR2-S2814D, were studied.
|
314 |
23516528
|
These observations were supported by immunohistochemical analyses of islets in diabetic human and mouse pancreata that revealed significantly enhanced CaMKII phosphorylation of RyR2 in type 2 diabetes.
|
315 |
23516528
|
Together, these studies implicate that the chronic gain-of-function defect in RyR2 due to CaMKII hyperphosphorylation is a novel mechanism that contributes to pathogenesis of type 2 diabetes.
|
316 |
23516528
|
Effects of CaMKII-mediated phosphorylation of ryanodine receptor type 2 on islet calcium handling, insulin secretion, and glucose tolerance.
|
317 |
23516528
|
This elevation in [Ca(2+)]cyt leads to activation of Ca(2+)/calmodulin-dependent protein kinase II (CAMKII), which, in turn, controls multiple aspects of insulin secretion.
|
318 |
23516528
|
CaMKII is known to phosphorylate ryanodine receptor 2 (RyR2), an intracellular Ca(2+)-release channel implicated in Ca(2+)-dependent steps of insulin secretion.
|
319 |
23516528
|
Our data show that RyR2 is CaMKII phosphorylated in a pancreatic β-cell line in a glucose-sensitive manner.
|
320 |
23516528
|
However, it is not clear whether any change in CaMKII-mediated phosphorylation underlies abnormal RyR2 function in β cells and whether such a change contributes to alterations in insulin secretion.
|
321 |
23516528
|
Therefore, knock-in mice with a mutation in RyR2 that mimics its constitutive CaMKII phosphorylation, RyR2-S2814D, were studied.
|
322 |
23516528
|
These observations were supported by immunohistochemical analyses of islets in diabetic human and mouse pancreata that revealed significantly enhanced CaMKII phosphorylation of RyR2 in type 2 diabetes.
|
323 |
23516528
|
Together, these studies implicate that the chronic gain-of-function defect in RyR2 due to CaMKII hyperphosphorylation is a novel mechanism that contributes to pathogenesis of type 2 diabetes.
|
324 |
23820268
|
Folic acid reverses nitric oxide synthase uncoupling and prevents cardiac dysfunction in insulin resistance: role of Ca2+/calmodulin-activated protein kinase II.
|
325 |
23820268
|
Nitric oxide synthase (NOS) may be uncoupled to produce superoxide rather than nitric oxide (NO) under pathological conditions such as diabetes mellitus and insulin resistance, leading to cardiac contractile anomalies.
|
326 |
23820268
|
Nonetheless, the role of NOS uncoupling in insulin resistance-induced cardiac dysfunction remains elusive.
|
327 |
23820268
|
Given that folic acid may produce beneficial effects for cardiac insufficiency partially through its NOS recoupling capacity, this study was designed to evaluate the effect of folic acid on insulin resistance-induced cardiac contractile dysfunction in a sucrose-induced insulin resistance model.
|
328 |
23820268
|
Our results revealed whole body insulin resistance after sucrose feeding associated with diminished NO production, elevated peroxynitrite (ONOO(-)) levels, and impaired echocardiographic and cardiomyocyte function along with a leaky ryanodine receptor (RYR) and intracellular Ca(2+) handling derangement.
|
329 |
23820268
|
Western blot analysis showed that insulin resistance significantly promoted Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) phosphorylation, which might be responsible for the leaky RYR and cardiac mechanical dysfunction.
|
330 |
23820268
|
NOS recoupling using folic acid reversed insulin resistance-induced changes in NO and ONOO(-), CaMKII phosphorylation, and cardiac mechanical abnormalities.
|
331 |
23820268
|
Taken together, these data demonstrated that treatment with folic acid may reverse cardiac contractile and intracellular Ca(2+) anomalies through ablation of CaMKII phosphorylation and RYR Ca(2+) leak.
|
332 |
23820268
|
Folic acid reverses nitric oxide synthase uncoupling and prevents cardiac dysfunction in insulin resistance: role of Ca2+/calmodulin-activated protein kinase II.
|
333 |
23820268
|
Nitric oxide synthase (NOS) may be uncoupled to produce superoxide rather than nitric oxide (NO) under pathological conditions such as diabetes mellitus and insulin resistance, leading to cardiac contractile anomalies.
|
334 |
23820268
|
Nonetheless, the role of NOS uncoupling in insulin resistance-induced cardiac dysfunction remains elusive.
|
335 |
23820268
|
Given that folic acid may produce beneficial effects for cardiac insufficiency partially through its NOS recoupling capacity, this study was designed to evaluate the effect of folic acid on insulin resistance-induced cardiac contractile dysfunction in a sucrose-induced insulin resistance model.
|
336 |
23820268
|
Our results revealed whole body insulin resistance after sucrose feeding associated with diminished NO production, elevated peroxynitrite (ONOO(-)) levels, and impaired echocardiographic and cardiomyocyte function along with a leaky ryanodine receptor (RYR) and intracellular Ca(2+) handling derangement.
|
337 |
23820268
|
Western blot analysis showed that insulin resistance significantly promoted Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) phosphorylation, which might be responsible for the leaky RYR and cardiac mechanical dysfunction.
|
338 |
23820268
|
NOS recoupling using folic acid reversed insulin resistance-induced changes in NO and ONOO(-), CaMKII phosphorylation, and cardiac mechanical abnormalities.
|
339 |
23820268
|
Taken together, these data demonstrated that treatment with folic acid may reverse cardiac contractile and intracellular Ca(2+) anomalies through ablation of CaMKII phosphorylation and RYR Ca(2+) leak.
|
340 |
23820268
|
Folic acid reverses nitric oxide synthase uncoupling and prevents cardiac dysfunction in insulin resistance: role of Ca2+/calmodulin-activated protein kinase II.
|
341 |
23820268
|
Nitric oxide synthase (NOS) may be uncoupled to produce superoxide rather than nitric oxide (NO) under pathological conditions such as diabetes mellitus and insulin resistance, leading to cardiac contractile anomalies.
|
342 |
23820268
|
Nonetheless, the role of NOS uncoupling in insulin resistance-induced cardiac dysfunction remains elusive.
|
343 |
23820268
|
Given that folic acid may produce beneficial effects for cardiac insufficiency partially through its NOS recoupling capacity, this study was designed to evaluate the effect of folic acid on insulin resistance-induced cardiac contractile dysfunction in a sucrose-induced insulin resistance model.
|
344 |
23820268
|
Our results revealed whole body insulin resistance after sucrose feeding associated with diminished NO production, elevated peroxynitrite (ONOO(-)) levels, and impaired echocardiographic and cardiomyocyte function along with a leaky ryanodine receptor (RYR) and intracellular Ca(2+) handling derangement.
|
345 |
23820268
|
Western blot analysis showed that insulin resistance significantly promoted Ca(2+)/calmodulin-dependent protein kinase II (CaMKII) phosphorylation, which might be responsible for the leaky RYR and cardiac mechanical dysfunction.
|
346 |
23820268
|
NOS recoupling using folic acid reversed insulin resistance-induced changes in NO and ONOO(-), CaMKII phosphorylation, and cardiac mechanical abnormalities.
|
347 |
23820268
|
Taken together, these data demonstrated that treatment with folic acid may reverse cardiac contractile and intracellular Ca(2+) anomalies through ablation of CaMKII phosphorylation and RYR Ca(2+) leak.
|