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PMID |
Sentence |
1 |
7556949
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Intravenous injection of insulin moderately activated both the 42-kDa MAP kinase (p42mapk) and a 44-kDa MAP kinase (p44erk1) in the 2-month control rats but not in the 2-month diabetic rats.
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2 |
10969830
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Cell death could be elicited by overexpressing the catalytic domain of MAPK kinase kinase 1, a specific activator of JNK and nuclear factor-kappaB, which does not recruit ERK-1/2 or p38.
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3 |
10940302
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Insulin activates a complex set of intracellular responses, including the activation of mitogen-activated protein kinases Erk1,2.
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4 |
10940302
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In Chinese hamster ovary cells, expression of beta(2)-adrenergic receptors enhanced 5-10-fold the activation of Erk1,2 by insulin and prolonged the activation, the greatest enhancement occurring at 5 min post-insulin.
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5 |
10940302
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The potentiation of insulin signaling on Erk1,2 was proportional to the level of expression of beta(2)-adrenergic receptor.
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6 |
10940302
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The potentiation of insulin signaling requires the integrity of Tyr(350) of the beta(2)-adrenergic receptor, a residue phosphorylated in response to insulin. beta(2)-adrenergic receptors with a Y350F mutation failed to potentiate insulin activation of Erk1,2.
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7 |
10940302
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Blockade of beta(2)-adrenergic receptor sequestration does not alter the ability of the beta(2)-adrenergic receptor to potentiate insulin action on Erk1,2.
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8 |
12663469
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However, the signaling mechanism by which glucose induces Erk-1/2 and p70(S6K) phosphorylation activation is undefined.
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9 |
12663469
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Blocking Ca(2+) influx with verapamil, or inhibiting protein kinase A (PKA) with H89, prevented glucose-induced Erk-1/2 phosphorylation.
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10 |
12663469
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Collectively, our study indicates that a glucose-induced rise in [Ca(2+)](i) leads to cAMP-induced activation of PKA that acts downstream of Ras and upstream of the MAP/Erk kinase, MEK, to mediate Erk-1/2 phosphorylation via phosphorylation activation of Raf-1.
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11 |
16506055
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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.
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12 |
16873684
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Our results indicate that ERK1 and -2 control the phosphorylation and protein level of CREB and play a key role in glucose-mediated pancreatic beta-cell survival.
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13 |
19029977
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ET(A) and ET(B) receptors, ERK-1/2 and MEK-1/2 protein expression and endothelin-1-stimulated ERK phosphorylation were all increased in aortae from insulin-treated diabetic rats.
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14 |
19741193
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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.
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15 |
19706988
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Interestingly, insulin I and II, anti-apoptotic bcl-2, and proliferation promoting ERK-1 gene expressions were significantly upregulated in db/m mice.
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16 |
19706988
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Expressions of insulin I and II, bcl-2, and ERK-1 gene were increased in db/m mice, but not in m/m fed a high fat diet.
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17 |
20375985
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Furthermore, visfatin induced tyrosine phosphorylation of the insulin receptor, activated downstream insulin signaling pathways such as Erk-1, Akt, and p38 MAPK, and markedly increased the levels of TGFbeta1, PAI-1, type I collagen, and MCP-1 in both renal cells.
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18 |
20953578
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Our results demonstrate that the targeting of ERK1 could partially protect obese mice against insulin resistance and liver steatosis by decreasing adipose tissue inflammation and by increasing muscle glucose uptake.
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19 |
14693700
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The ability of TNF-alpha to phosphorylate extracellular signal-regulated kinase 1 (ERK1) and ERK2 and to downregulate perilipin (which has been implicated in the lipolytic effect of TNF-alpha) was not affected by glucose.
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