Caveolin-3 is involved in the protection of resveratrol against high-fat-diet-induced insulin resistance by promoting GLUT4 translocation to the plasma membrane in skeletal muscle of ovariectomized rats

The Journal of Nutritional Biochemistry
Z TanT Wang

Abstract

Insulin resistance is recognized as a common metabolic factor which predicts the future development of both type 2 diabetes and atherosclerotic disease. Resveratrol (RSV), an agonist of estrogen receptor (ER), is known to affect insulin sensitivity, but the mechanism is unclear. Evidence suggests that caveolin-3 (CAV-3), a member of the caveolin family, is involved in insulin-stimulated glucose uptake. Our recent work indicated that estrogen via ER improves glucose uptake by up-regulation of CAV-3 expression. Here, we investigated the role of CAV-3 in the effect of RSV on insulin resistance in skeletal muscle both in vivo and in vitro. The results demonstrated that RSV ameliorated high-fat-diet (HFD)-induced glucose intolerance and insulin resistance in ovariectomized rats. RSV elevated insulin-stimulated glucose uptake in isolated soleus muscle in vivo and in C2C12 myotubes in vitro by enhancing GLUT4 translocation to the plasma membrane rather than increasing GLUT4 protein expression. Through ERα-mediated transcription, RSV increased CAV-3 protein expression, which contributed to GLUT4 translocation. Moreover, after knockdown of CAV-3 gene, the effects of RSV on glucose uptake and the translocation of GLUT4 to the plasma memb...Continue Reading

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Citations

Aug 25, 2012·Journal of Agricultural and Food Chemistry·An-Sheng ChengTsu-Liang Chang
Aug 26, 2014·Pharmacological Research : the Official Journal of the Italian Pharmacological Society·Philip Chiu-Tsun TangShun-Wan Chan
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May 1, 2021·International Journal of Molecular Sciences·Tovit Rosenzweig, Sanford R Sampson

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