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The protective effect of resveratrol on islet insulin secretion and morphology in mice on a high-fat diet.

Abstract：

:The aim of this study was to investigate the effect of resveratrol on beta cells in male C57BL/6J mice fed a high-fat diet and the possible mechanisms. Male C57BL/6J mice were randomly divided into three groups: normal control (NC) group, high-fat diet (HF) group and high-fat diet and resveratrol treatment (HFR) group (15 in each group). HFR group was fed with high fat diet for 8 weeks and then orally administered resveratrol at 400mg/kg daily. Twenty-four weeks later, the function of insulin secretion in vivo and in vitro was improved robustly in HFR group compared with HF group. The levels of glucose and lipid metabolism, beta cell mass, lipid content, and oxidative stress were lower in HFR group than in HF group. Simultaneously, resveratrol administration promoted the expression of SIRT1 in islets, while the expression of uncoupling protein 2 (UCP2) was restrained. Resveratrol, as well, also had a beneficial effect on the ratios of expressions of Bcl-2/Bax and levels of malondialdehyde/glutathione peroxidase. Resveratrol can protect islets from abnormal insulin secretion and morphological changes induced by a high-fat diet. The effect might be partly related to activated SIRT1 signal pathway, improved oxidative stress induced damage and incidence of apoptosis.

journal_name

Diabetes Res Clin Pract

journal_title

Diabetes research and clinical practice

authors

Zhang J,Chen L,Zheng J,Zeng T,Li H,Xiao H,Deng X,Hu X

doi

10.1016/j.diabres.2012.02.029

subject

Has Abstract

pub_date

2012-09-01 00:00:00

pages

474-82

issue

3

eissn

0168-8227

issn

1872-8227

pii

S0168-8227(12)00102-7

journal_volume

97

pub_type

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