Parathyroid hormone suppresses insulin signaling in adipocytes.
Parathyroid hormone suppresses insulin signaling in adipocytes.
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DOI:
10.1016/j.mce.2009.03.024
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发表时间:
2009-08-13
影响因子:
4.1
通讯作者:
Teegarden, Dorothy
中科院分区:
文献类型:
--
作者:
Chang, Eugene;Donkin, Shawn S.;Teegarden, Dorothy
Previous reports suggest that parathyroid hormone (PTH) is associated with insulin resistance. This research investigated the effects of PTH on insulin signaling in differentiated 3T3-L1 adipocytes. PTH (10 nM, 24 h) treatment induced a reduction in insulin-stimulated glucose uptake, AKT activity (phosphorylated AKT/total AKT protein expression) and a decrease in GLUT4 and IRS-1 protein expression compared to vehicle treated controls in differentiated adipocytes. PTH treatment also induced increased phosphorylation of IRS-1 on serine 307, which suppresses insulin signaling. In addition, treatment of cells with adenyl cyclase inhibitor SQ52236 ameliorated the effects of PTH on insulin-stimulated glucose uptake, whereas inhibition of phospholipase C α(U73122) did not significantly alter the effects of PTH. Thus, PTH treatment of differentiated 3T3-L1 adipocytes suppresses insulin-stimulated glucose uptake and insulin signaling via cAMP pathway, potentially through the phosphorylation of IRS-1 at serine 307.
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影响因子:
7.7
作者:
Ruan, H;Miles, PDG;Lodish, HF
通讯作者:
Lodish, HF
影响因子:
4.8
作者:
Stephens, JM;Lee, J;Pilch, PF
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Saad, MF
DOI:
10.1073/pnas.151252898
发表时间:
2001-07-31
影响因子:
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作者:
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通讯作者:
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影响因子:
3.2
作者:
KUMAR, S;OLUKOGA, AO;BOULTON, AJM
通讯作者:
BOULTON, AJM