Effects of Bacillus subtilis natto JLCC513 on gut microbiota and intestinal barrier function in obese rats
文献类型： 外文期刊
作者： Sun, Ruiyue 1 ; Mu, Honghong 1 ; Sun, Mubai 1 ; Miao, Xinyu 1 ; Xin Ji 3 ; Xu, Xifei 1 ; Chi Yanping 1 ; Hua Mei 1 ; Wang, Jinghui 1 ; Li Da 1 ; Ying Su 1 ;
作者机构： 1.Jilin Acad Agr Sci, Inst Agroprod Proc, Changchun 130033, Jilin, Peoples R China
2.Yanbian Univ, Agr Coll, Dept Food Sci & Engn, Yanji, Peoples R China
3.Jilin Agr Univ, Coll Food Sci & Engn, Changchun, Peoples R China
关键词： Bacillus subtilis natto; gut microbiota; inflammation; intestinal barrier; obesity
期刊名称：JOURNAL OF APPLIED MICROBIOLOGY （ 影响因子：4.059； 五年影响因子：4.439 ）
ISSN： 1364-5072
年卷期： 2022 年 133 卷 6 期
页码：
收录情况： SCI
摘要： Aims This study aimed to investigate the effects of Bacillus subtilis natto JLCC513 (JLCC513) on gut microbiota, inflammation and intestinal barrier function in high-fat-diet (HFD) rats. Methods and Results Sprague-Dawley (SD) rats were fed HFD for 16 weeks, and treated with JLCC513 in 9th week. The oral administration of JLCC513 decreased body weight and reduced the inflammation level in HFD rats. Pathologically, JLCC513 prevented the detachment of ileal villus and increased the villus height in rats. Mechanistically, western blot analysis showed that the protein levels of tight junction (TJ) proteins involved in intestinal barrier function, including zonula occludens-1 (ZO-1), occludin and claudin-1, were increased after JLCC513 treatment. Meanwhile, JLCC513 treatment also decreased the protein levels of toll-like receptor 4 (TLR4), nuclear factor kappa-B (NF-kappa B) and NOD-like receptor protein 3 (NLRP3), indicating inhibition of the TLR4/NF-kappa B/NLRP3 pathway. Furthermore, faecal analysis showed that JLCC513 increased the abundance of Lactobacillus and Oscillospira and the ratio of Firmicutes/Bacteroidetes (F/B), and decreased the levels of Blautia and C_Clostridium. Conclusions JLCC513 alleviated intestinal barrier dysfunction by inhibiting TLR4/NF-kappa B/NLRP3 pathway and regulating gut microbiota disorders. Significance and Impact of Study Our study might provide new treatment strategies for obesity and metabolic diseases.
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