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PMID |
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1 |
8275944
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By contrast, insulin treatment resulted in only a small increase in c-jun mRNA levels in both adipose tissue and cardiac muscle.
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2 |
8275944
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Similarly, the expression of c-jun mRNA was only slightly responsive to insulin in these tissues from streptozocin-induced insulin-deficient diabetic rats.
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3 |
8275944
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These data demonstrate that in contrast to c-jun, c-fos is transiently increased in both cardiac muscle and adipose tissue by insulin treatment.
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4 |
7512956
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In differentiated 3T3-F442A adipocytes, insulin stimulated rapid and transient phosphorylation of c-Jun.
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5 |
8049217
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However, they fail to undergo insulin-stimulated internalization, do not regulate the phosphorylation of insulin receptor substrate 1, and are unable to mediate an insulin-stimulated increase in DNA synthesis and c-jun and c-fos expression.
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6 |
11147798
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Addition of the peptides to the insulin-secreting betaTC-3 cell line results in a marked inhibition of IL-1beta-induced c-jun and c-fos expression.
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7 |
11160134
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Recently, we discovered that recombinant NH2-terminal Jun kinase phosphorylates IRS-1 at Ser307, which inhibits insulin-stimulated tyrosine phosphorylation of IRS-1.
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8 |
15161746
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Effects of diverse stimuli, including insulin, muscle contraction, and phorbol 12-myristate-13-acetate (PMA), were determined on phosphorylation of mitogen-activated protein kinase (MAPK) signaling modules (c-Jun NH(2)-terminal kinase [JNK], p38 MAPK, and extracellular signal-related kinase [ERK1/2]) in skeletal muscle from lean and ob/ob mice.
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9 |
16293713
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In contrast, PD98059 (2'-amino-3'-methoxyflavone), an inhibitor of mitogen-activated protein kinase kinase, SP600125 (1,9-pyrazoloanthrone), an inhibitor of c-Jun N-terminal kinase, SB203580 [4-(4-fluorophenyl)-2-(4-methylsulfinylphenyl)-5-(4-pyridyl)1H-imadazole], an inhibitor of p38 mitogen-activated protein kinase, or bisindolylmaleimide, a broad spectrum inhibitor of protein kinase C, did not inhibit the insulin-mediated increase in alpha-class GST protein levels in hepatocytes.
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10 |
16622294
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A novel approach to reverse insulin resistance involves inhibition of the stress-activated protein kinase Jun N-terminal kinase (JNK) and the protein tyrosine phosphatases (PTPs).
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11 |
17003331
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In contrast, insulin-stimulated extracellular signal-regulated kinase1/2 and Jun NH2-terminal kinase (JNK) activation were decreased in the presence of bradykinin, accompanied by decreased IRS-1 Ser307 phosphorylation.
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12 |
16854579
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We propose that in the liver, the mitogen-activated protein kinase, c-jun N-terminal kinase (JNK), links excessive nutrient metabolism with impaired insulin regulation of glucose production.
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13 |
17416798
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Activation of c-Jun NH2-terminal kinase (JNK) inhibits insulin signaling in cultured cells and in vivo and thereby promotes insulin resistance.
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14 |
18187553
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Exogenous TNF-alpha infusion increased c-Jun N-terminal kinase phosphorylation and insulin receptor substrate-1 serine 307 phosphorylation, and inhibited insulin-induced signaling in liver.
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15 |
18434357
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However, there was no insulin-stimulated protein kinase B (PKB) Ser473 or glycogen synthase kinase (GSK)-3beta Ser9 phosphorylation in the LIP rats, compared with at least a twofold increase over basal in GLYC rats for both proteins. c-Jun N-terminal kinase, inhibitor of kappa kinase beta and inhibitor of nuclear factor-kappaB phosphorylation and total protein expression, as well as Ser307-IRS-1 phosphorylation, were not altered by lipid infusion compared with GLYC infusion.
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16 |
18567823
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Impaired insulin sensitivity is accompanied by increased activation of hepatic c-Jun NH(2)-terminal kinase/stress-activated protein kinase in Cd39/Entpd1 mice after injection of ATP in vivo.
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17 |
18678273
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Inhibition of c-Jun N-terminal kinases by a small cell-permeable peptide improves insulin sensitivity in mice.
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18 |
18678273
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Hepatic inhibition of c-Jun N-terminal kinases using a dominant-negative protein or knockdown of c-Jun N-terminal kinase-1 gene by RNA interference reduces blood glucose and insulin levels and enhances hepatic insulin signaling in mice.
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19 |
18796617
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Three mechanisms seem to operate in IL-6-induced insulin resistance: activation of c-Jun NH(2)-terminal kinase 1/2 (JNK1/2), accumulation of suppressor of cytokine signaling 3 (socs3) mRNA, and an increase in PTP1B activity.
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20 |
19108709
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Insulin-induced increases in c-Jun NH2-terminal kinase-1 (JNK1) activity were partially inhibited by m7E3 and eptifibatide whereas antagonism of alphavbeta3 integrins had no effect on insulin-induced increases in extracellular signal-regulated kinase (ERK) activity.
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21 |
19073766
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Heat treatment resulted in decreased activation of Jun NH2-terminal kinase (JNK) and inhibitor of kappaB kinase (IKK-beta), stress kinases implicated in insulin resistance, and upregulation of HSP72 and HSP25, proteins previously shown to inhibit JNK and IKK-beta activation, respectively.
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22 |
19243309
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JNK1 (c-Jun N-terminal kinase 1) plays a crucial role in the regulation of obesity-induced insulin resistance and is implicated in the pathology of Type 2 diabetes.
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23 |
20424231
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Costaining of these factors in the islets of db/db mice clearly showed that MafA and insulin levels are decreased in c-Jun-positive cells.
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24 |
20424231
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Importantly, MafA overexpression restored the insulin promoter activity and protein levels that were suppressed by c-Jun.
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25 |
20424231
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These results indicate that the decreased insulin biosynthesis induced by c-Jun is principally mediated by the suppression of MafA activity.
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26 |
20424231
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It is likely that the augmented expression of c-Jun in diabetic islets decreases MafA expression and thereby reduces insulin biosynthesis, which is often observed in type 2 diabetes.
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27 |
21073655
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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.
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28 |
21239612
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Insulin-induced intracellular signaling, activation of stress (c-Jun N-terminal kinase) signaling, and glucose metabolism were all normalized by superoxide dismutase 2 overexpression or by pretreatment with antioxidants.
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29 |
21252113
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Furthermore, troxerutin significantly inhibited the activation of c-jun N-terminal kinase 1 and I?B kinase ?/nuclear factor-?B induced by endoplasmic reticulum stress and enhanced insulin signalling pathway, which prevented obesity, restored normal levels of blood glucose, fatty acids and cholesterol and increased the phosphorylation of cyclic adenosine monophosphate response element-binding protein and the expression levels of c-fos in the hippocampus.
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30 |
21090814
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This approach was used to screen both the c-Jun N-terminal protein kinase Jnk-1 (involved in insulin signaling) and p38? (involved in the formation of TNF? and other cytokines).
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31 |
21487310
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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.
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32 |
21962514
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Saturated FA, but not unsaturated FA, activate Jun N-terminal kinase (JNK), which has been linked to obesity and insulin resistance in mice and humans.
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33 |
20232313
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Importantly, selective inhibition of c-Src, c-Jun N-terminal kinase (JNK), and extracellular signal-regulated kinase (ERK) prior to exposure to C-IV prevented mesenchymal transition and effectively preserved insulin expression.
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