Stevioside ameliorates high-fat diet-induced insulin resistance and adipose tissue inflammation by downregulating the NF-¦ÊB pathway

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• 作者：Zhiquan Wang¹ ; Liqiong Xue¹ ; Cuicui Guo¹ ; Bing Han ; Chunming Pan ; Shuangxia Zhao ; Huaidong Song ; Qinyun Ma ; ^{qinyunma@126.com}
• 关键词：SVS ; stevioside ; HFD ; high-fat diet ; HEC ; hyperinsulinemic-euglycemic cl GIR ; glucose infusion rate ; T2DM ; type 2 diabetes mellitus ; NF-¦ÊB ; nuclear factor-kappa b
• 刊名：Biochemical and Biophysical Research Communications
• 出版年：2012
• 出版时间：27 January 2012
• 年：2012
• 卷：417
• 期：4
• 页码：1280-1285
• 全文大小：617 K

文摘

Accumulating evidence suggests that adipose tissue is the main source of pro-inflammatory molecules that predispose individuals to insulin resistance. Stevioside (SVS) is a widely used sweetener with multiple beneficial effects for diabetic patients. In this study, we investigated the effect of SVS on insulin resistance and the pro-inflammatory state of adipose tissue in mice fed with a high-fat diet (HFD). Oral administration of SVS for 1 month had no effect on body weight, but it significantly improved fasting glucose, basal insulin levels, glucose tolerance and whole body insulin sensitivity. Interestingly, these changes were accompanied with decreased expression levels of several inflammatory cytokines in adipose tissue, including TNF-¦Á, IL6, IL10, IL1¦Â, KC, MIP-1¦Á, CD11b and CD14. Moreover, macrophage infiltration in adipose tissue was remarkably reduced by SVS. Finally, SVS significantly suppressed the nuclear factor-kappa b (NF-¦ÊB) signaling pathway in adipose tissue. Collectively, these results suggested that SVS may ameliorate insulin resistance in HFD-fed mice by attenuating adipose tissue inflammation and inhibiting the NF-¦ÊB pathway.