抗生素对肠道微生物群的作用调节了C57BL/6小鼠中饮食诱导的代谢功能障碍与相关的脂肪肝炎的发展
Shun Takano1, Koudai Kani1, Kaichi Kasai1
1Department of Pharmaceutical Engineering, Faculty of Engineering, Toyama Prefectural University, Imizu, Japan.
概括
范科米辛治疗通过改变肠道细菌和胆汁酸,使小鼠的代谢功能障碍相关的脂肪肝炎 (MASH) 恶化. 这突出了肠道微生物群.
科学领域:
- 微生物学 微生物学
- 肝病学 肝病学是一种肝病学.
- 胃肠病学 胃肠病学
背景情况:
- 人们越来越认识到肠道微生物群在代谢功能障碍相关的脂肪肝炎 (MASH) 中的作用.
- 高脂肪/高胆固醇/高胆酸盐 (iHFC) 饮食诱导MASH,但具体的微生物贡献尚不清楚.
研究的目的:
- 研究肠道微生物群调节对小鼠饮食诱导的MASH进展的影响.
- 阐明特定细菌群体,胆酸代谢和肝脏病理之间的关系.
主要方法:
- 给C57BL/6小鼠提供iHFC饮食以诱导MASH.
- 小鼠接受了针对格拉姆阳性细菌的万科米辛 (VCM) 或针对无氧细菌的甲尼达.
- 分析了肝损伤,肥胖症,纤维化,基因表达,免疫细胞透,肠道微生物群组成 (16S rRNA测序) 和胆酸概况.
主要成果:
- VCM治疗显著加剧了肝损伤,脂肪和纤维化.
- VCM增加了肝炎和纤维化基因表达以及F4/80+巨细胞的丰富性.
- VCM减少了肠道微生物的α-多样性,减少了Bacteroidetes和Firmicutes,增加了蛋白质细菌和Verrucomicrobia.
- VCM治疗极大地改变了胆酸的组成和平衡.
结论:
- 香草素介导的MASH恶化与肠道微生物群失调和改变胆酸代谢有关.
- 这些发现强调了MASH病变发生过程中肠道微生物群,胆汁酸和肝炎之间的复杂相互作用.
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