人体肠道微生物群在肝硬化风险中的作用:双样本孟德尔随机化研究
Ouyang Li1, Han Xu2, Dayoung Kim2
1Shanghai Key Laboratory of Clinical Geriatric Medicine, Shanghai, China; Department of Gastroenterology, Huadong Hospital Affiliated to Fudan University, Shanghai, China.
The Journal of nutrition
|November 20, 2023
概括
这项研究使用了门德尔的随机化方法,以因果关系地将肠道细菌与肝硬化联系起来. 特定的细菌,如拉克诺西拉属和乳杆菌,显示关联,为肝脏疾病提供新的治疗途径.
科学领域:
- 胃肠病学和肝病学 胃肠学和肝病学
- 微生物组研究 微生物组研究
- 遗传流行病学遗传流行病学
背景情况:
- 肠道微生物组合的变化越来越多地与肝硬化有关.
- 肠道微生物群在肝硬化发展中的确切作用尚不清楚.
研究的目的:
- 确定肠道微生物群与肝纤维化和肝硬化发展之间的因果关系.
- 用遗传分析研究特定肠道细菌对肝硬化病的潜在影响.
主要方法:
- 进行了一种双样本的门德尔随机化 (MR) 分析.
- 使用全基因组关联研究 (GWAS) 对肠道微生物群 (MiBioGen) 和肝硬化 (FinnGen) 的总结统计数据.
- 应用了多种MR方法 (IVW,MR-Egger,WME,加权模式) 和灵敏度分析.
主要成果:
- 在四个肠道微生物群特征和肝硬化之间发现了因果关系.
- 具体来说,Lachnosiraceae和Lactobacillaceae家族以及Butyricicoccus和Lactobacillus属具有显著的关联.
- 几率比率和置信区间表明与这些细菌相关的风险增加和减少.
结论:
- 这项研究提供了强有力的证据,证明了欧洲人口中肠道微生物群和肝硬化之间的因果关系.
- 已识别的细菌种类可能在调节肝纤维化和肝硬化发育方面发挥作用.
- 这些发现表明肝硬化治疗的潜在新型治疗点.
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