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Abstract Title:

The Beneficial Effect of Anthocyanidin-Rich Vitis vinifera L. Grape Skin Extract on Metabolic Changes Induced by High-Fat Diet in Mice Involves Antiinflammatory and Antioxidant Actions.

Abstract Source:

Phytother Res. 2017 Oct ;31(10):1621-1632. Epub 2017 Aug 25. PMID: 28840618

Abstract Author(s):

Gisele França da Costa, Izabelle Barcellos Santos, Graziele Freitas de Bem, Viviane Silva Cristino Cordeiro, Cristiane Aguiar da Costa, Lenize Costa Reis Marins de Carvalho, Dayane Teixeira Ognibene, Angela Castro Resende, Roberto Soares de Moura

Article Affiliation:

Gisele França da Costa

Abstract:

We hypothesized that a polyphenol-rich extract from Vitis vinifera L. grape skin (GSE) may exert beneficial effects on obesity and related metabolic disorders induced by a high-fat diet (HFD). C57/BL6 mice were fed a standard diet (10% fat, control, and GSE groups) or an HFD (60% fat, high fat (HF), and HF + GSE) with or without GSE (200 mg/kg/day) for 12 weeks. GSE prevented weight gain; dyslipidemia; insulin resistance; the alterations in plasma levels of leptin, adiponectin, and resistin; and the deregulation of leptin and adiponectin expression in adipose tissue. These beneficial effects of GSE may be related to a positive modulation of insulin signaling proteins (IR, pIRS, PI3K, pAKT), pAMPK/AMPK ratio, and GLUT4 expression in muscle and adipose tissue. In addition, GSE prevented the oxidative damage, evidenced by the restoration of antioxidant activity and decrease of malondialdehyde and carbonyl levels in muscle and adipose tissue. Finally, GSE showed an anti-inflammatory action, evidenced by the reduced plasma and adipose tissue inflammatory markers (TNF-α, IL-6). Our results suggest that GSE prevented the obesity and related metabolic disorders in HF-fed mice by regulating insulin sensitivity and GLUT4 expression as well as by preventing the oxidative stress and inflammation in skeletal muscle and adipose tissue. Copyright © 2017 John Wiley&Sons, Ltd.

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