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Abstract Title:

Grape seed proanthocyanidin extract ameliorates inflammation and adiposity by modulating gut microbiota in high-fat diet mice.

Abstract Source:

Mol Nutr Food Res. 2017 May 12. Epub 2017 May 12. PMID: 28500724

Abstract Author(s):

Wen Liu, Shaoqian Zhao, Jiqiu Wang, Juan Shi, Yingkai Sun, Weiqing Wang, Guang Ning, Jie Hong, Ruixin Liu

Article Affiliation:

Wen Liu

Abstract:

SCOPE: Obesity and associated metabolic complications is a worldwide public health issue. Gut microbiota have been recently linked to obesity and its related inflammation. In this study, we have explored the anti-inflammatory effect of grape seed proanthocyanindin extract (GSPE) in the high-fat diet (HFD)-induced obesity and identified the contribution of the gut microbiota to GSPE effects on metabolism.

METHODS AND RESULTS: Mice were fed a normal diet and a high-fat diet with or without GSPE (300 mg/kg body weight/day) by oral gavage for 7 weeks. Supplementation with GSPE significantly decreased plasma levels of inflammatory factors such as TNF-α, IL-6 and MCP-1, companied with ameliorated macrophage infiltration in epidydimal fat and liver tissues. Furthermore, GSPE also reduced epidydimal fat mass and improved insulin sensitivity. 16S rDNA analyses revealed that GSPE supplementation modulated the gut microbiota composition and certain bacteria including Clostridium XIVa, Roseburia and Prevotella. More importantly, depleting gut microbiota by antibiotics treatment abolished the beneficial effects of GSPE on inflammation and adiposity.

CONCLUSION: Our study identifies the novel links between gut microbiota alterations and metabolic benefits by GSPE supplementation, providing possibilities for the prevention and treatment of metabolic disorders by targeting gut microbiota through a potential prebiotic agent GSPE.

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