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Selenium Affects The Activity Of B.lack Tea In Preventing M etabolic Syndrome In High-Fat Diet-Fed Sprague-Dawley Rats

文献类型： 外文期刊

作者： Gao, Y; Xu, YQ; Ruan, JY; Yin, JF

作者机构：

关键词： selenium; black tea; metabolic syndrome; blood glucose regulation; hepatoprotection; gut microbiota

期刊名称： JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE

ISSN： 0022-5142

年卷期： 2019 年

页码：

收录情况： JCR（2021版）

摘要： BACKGROUND Metabolic syndrome, a group of factors that increase the risk of health problems, is becoming increasingly common. Strategies to prevent metabolic syndrome have received substantial attention. Black tea consumption and selenium (Se) intake have been reported to be associated negatively with the prevalence of metabolic syndrome. We therefore sought to investigate whether Se-rich black tea might have a stronger effect than Se-deficient black tea in the prevention of metabolic syndrome. RESULTS Sprague-Dawley rats were divided into four groups and fed a normal rodent diet, high-fat diet, high-fat diet containing 3% Se-rich black tea, or a high-fat diet containing 3% Se-deficient black tea for 4 weeks. Blood and tissue samples were tested at the end of the experiment. The results suggested that both types of black tea ameliorated high-fat diet-induced body-weight gain, lowered serum triglycerides and attenuated intestinal barrier dysfunction. Selenium-rich black tea showed stronger activity in decreasing fasting serum glucose and increasing insulin sensitivity, as well as stronger hepatoprotection, owing to higher total antioxidant capacity and activated hepatic antioxidant enzymes. However, it did not exhibit better effects in preventing fat accumulation. The different effects of Se-rich and Se-deficient black tea on the gut microbiota might have been partially responsible for the results. CONCLUSION Compared with Se-deficient black tea, Se-rich black tea displayed stronger activity in preventing high-fat diet-induced hyperglycemia and liver damage but was not better at preventing fat accumulation and attenuating dysbiosis. More experiments are needed to understand the underlying mechanisms further. (c) 2019 Society of Chemical Industry

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