Theasinensin A attenuated diabetic development by restoring glucose homeostasis, improving hepatic steatosis and modulating gut microbiota in high-fat-diet/streptozotocin-induced diabetic mice  

作　　者：Weiqi Xu Yujie Huang Wangting Zhou Yujia Peng Xuhui Kan Wei Dong Guijie Chen Xiaoxiong Zeng Zhonghua Liu 

机构地区：[1]College of Food Science and Technology,Nanjing Agricultural University,Nanjing 210095,China [2]Key Laboratory of Ministry of Education for Tea Science,Hunan Agricultural University,Changsha 410128,China [3]National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients,Changsha 410128,China

出　　处：《Food Science and Human Wellness》2023年第6期2073-2086,共14页食品科学与人类健康（英文）

基　　金：supported by the Key Technology R&D Program of Jiangsu Province(BE2020341);the Priority Academic Program Development of Jiangsu Higher Education Institutions.

摘　　要：Theasinensin A(TSA),a dimer of epigallocatechin gallate,has been preliminarily demonstrated to have hypoglycemia and anti-inflammatory effects.However,little information is available on its potential mechanisms of anti-diabetes.Therefore,the present study aimed to investigate the influence of TSA on glucose and lipid metabolism and gut microbiota in high-fat-diet/streptozotocin-induced diabetic mice.As result,TSA improved polydipsia,polyphagia and impaired glucose tolerance of diabetic mice,declined the fasting blood glucose and hepatic triglyceride level,and enhanced the expression at mRNA level of insulin receptor substrate,phosphoinositide 3-kinase,protein kinase B and glucagon-like peptide 1 receptor(GLP-1R)in the diabetic liver.Moreover,TSA could restore the disorder of gut microbiota of diabetic mice.High-dose(100 mg/kg)TSA showed better benefi cial effects from the blood biochemical parameters,hepatic function and gut microbiota.In general,high-dose TSA significantly modulated gut microbiota by increasing the relative abundance of Akkermansia and decreasing the relative abundances of Acetatifactor,Anaerotruncus,Pseudofl avonifactor,Oscillibacter and Clostridium clusters.The results indicated that TSA could exert an anti-diabetes effect in diabetic mice through restoring glucose homeostasis,declining hepatic steatosis,activating insulin and GLP-1 signaling pathways,and ameliorating gut microbiota dysbiosis.

关 键 词：TEA Theasinensin A Diabetes Glucose homeostasis Gut microbiota Hepatic steatosis 

分 类 号：TS201.4[轻工技术与工程—食品科学] R587.1[轻工技术与工程—食品科学与工程]