Dietary supplementation withLactobacillus plantarummodified gut microbiota, bile acid profile and glucose homoeostasis in weaning piglets
文献类型： 外文期刊
作者： Lin, Sen 1 ; Yang, Xiaomin 1 ; Long, Yanrong 1 ; Zhong, Heju 1 ; Wang, Peng 1 ; Yuan, Peiqiang 1 ; Zhang, Xiaoling 1 ; Ch 1 ;
作者机构： 1.Sichuan Agr Univ, Anim Nutr Inst, Key Lab Anim Dis Resistance Nutr, Minist Educ, Chengdu 611130, Peoples R China
2.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Guangzhou 510610, Peoples R China
关键词： Lactobacillus plantarum; Microbiota; Bile acids; Glucose homoeostasis; Piglets
期刊名称：BRITISH JOURNAL OF NUTRITION （ 影响因子：3.718； 五年影响因子：4.816 ）
ISSN： 0007-1145
年卷期： 2020 年 124 卷 8 期
页码：
收录情况： SCI
摘要： Bile acids (BA) have emerged as signalling molecules regulating intestinal physiology. The importance of intestinal microbiota in production of secondary BA, for example, lithocholic acid (LCA) which impairs enterocyte proliferation and permeability, triggered us to determine the effects of oral probiotics on intestinal BA metabolism. Piglets were weaned at 28 d of age and allocated into control (CON,n14) or probiotic (PRO,n14) group fed 50 mg ofLactobacillus plantarumdaily, and gut microbiota and BA profile were determined. To test the potential interaction of LCA with bacteria endotoxins in inducing damage of enterocytes, IPEC-J2 cells were treated with LCA, lipopolysaccharide (LPS) and LCA + LPS and expressions of genes related to inflammation, antioxidant capacity and nutrient transport were determined. Compared with the CON group, the PRO group showed lower total LCA level in the ileum and higher relative abundance of theLactobacillusgenus in faeces. In contrast, the relative abundances ofBacteroides,Clostridium_sensu_stricto_1,ParabacteroidesandRuminococcus_1, important bacteria genera in BA biotransformation, were all lower in the PRO than in the CON group. Moreover, PRO piglets had lower postprandial glucagon-like peptide-1 level, while higher glucose level than CON piglets. Co-administration of LPS and LCA led to down-regulated expression of glucose and peptide transporter genes in IPEC-J2 cells. Altogether, oralL. plantarumaltered BA profile probably by modulating relative abundances of gut microbial genera that play key roles in BA metabolism and might consequently impact glucose homoeostasis. The detrimental effect of LCA on nutrient transport in enterocytes might be aggravated under LPS challenge.
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