Addition of berberine to formulated feed changes the glucose utilisation, intestinal microbiota and serum metabolites of Largemouth bass (Micropterus salmoides)
文献类型： 外文期刊
作者： Xia, Yun 1 ; Wang, Guangjun 1 ; Yu, Ermeng 1 ; Tian, Jingjing 1 ; Li, Zhifei 1 ; Zhang, Kai 1 ; Gong, Wangbao 1 ; Xie, Jun 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Pearl River Fisheries Res Inst, Key Lab Trop & Subtrop Fishery Resource Applicat, Minist Agr, Guangzhou 510380, Peoples R China
关键词： Micropterus salmoides; Serum glucose; Berberine; Intestinal microbiota; Serum metabolites
期刊名称：AQUACULTURE REPORTS （ 影响因子：3.385； 五年影响因子：3.645 ）
ISSN： 2352-5134
年卷期： 2022 年 23 卷
页码：
收录情况： SCI
摘要： Largemouth bass (Micropterus salmoides) is extremely intolerant to carbohydrates in diets. To address this problem, this work studied the effects of berberine (BBR), a Chinese herbal extract with the serum glucoselowering activity in mammals, on regulating the serum glucose and intestinal microbiota in largemouth bass. The changes in glucose metabolism-related genes and serum metabolites were also determined to explore the possible pathways and underlying mechanisms. Our results showed that BBR reduced the serum contents of total cholesterol, triglyceride and glucose, and increased intestinal farnesoid X receptor (fxr) expression in largemouth bass (P < 0.001). BBR dramatically altered fxr downstream glycolysis- and gluconeogenesis-related genes, along with their enzyme activities (P < 0.001). Moreover, BBR changed the diversity of the intestinal microbiota, including decreasing the abundance of Fusobacteria and elevating those of Firmicutes and Proteobacteria (P < 0.001). Correlation analysis showed that the above increased bacteria in BBR group were strongly and positively related to the intestinal fxr genes. It was further found that the bacterial functions of "Glycolysis/Gluconeogenesis, " "Nitrogen metabolism " and "Energy metabolism " were enriched in the BBR group. Serum metabolomics analysis showed that BBR supplementation changed the metabolic processes, especially the metabolism of amino acids and carbohydrates. Correlation analysis found that, in the BBR group, the decreased abundance of Cetobacterium and increased abundances of Lachnospiracea and Ruminococcaceae were significantly correlated with the serum metabolites with serum glucose-lowering activity including butyrate, inosine, and N-methylhydantoin. Overall, these results confirmed that dietary supplementation of BBR decreased the serum glucose level of largemouth bass, possibly related to the changes of intestinal bacteria and their regulation on the intestinal-FXR signal pathways. Dietary BBR would provide new ways to improve the carbohydrate metabolism of largemouth bass.
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