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肠道微生物群和NAFLD/NASH之间的关联:一个双向的双样本孟德尔随机化研究.

Qilong Zhai1, Hongyu Wu1, Siyuan Zheng1

  • 1Department of Hepatobiliary Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.

Frontiers in cellular and infection microbiology
|December 18, 2023
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概括

这项研究揭示了特定肠道细菌与非酒精性脂肪性肝病 (NAFLD) 和非酒精性脂肪性肝炎 (NASH) 之间的因果关系. 这些发现可能会指导未来的预防和治疗策略对这些肝脏疾病.

关键词:
门德尔的随机化有关因果关系的因果关系我们的肠道微生物群.非酒精性脂肪性肝病是非酒精性脂肪性肝病.非酒精性型肝炎的疾病.

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科学领域:

  • 胃肠病学和肝病学
  • 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:

  • 新出现的证据表明,肠道微生物群组成与非酒精性脂肪肝疾病 (NAFLD) 和非酒精性脂肪肝炎 (NASH) 的发展之间存在联系.
  • 肠道微生物与NAFLD/NASH之间的因果关系的确切性质和方向性在很大程度上仍未确定.

研究的目的:

  • 阐明特定肠道微生物种群与NAFLD和NASH风险之间的潜在因果关系.
  • 通过孟德尔的随机化来研究这些关系的方向性.

主要方法:

  • 采用双样本的孟德尔随机化 (MR),利用肠道微生物群 (MiBioGen) 和NAFLD/NASH (FinnGen) 的总结级基因组广泛关联研究 (GWAS) 数据.
  • 反变量加权 (IVW) 方法是主要的分析方法,补充了灵敏度分析和反向MR以确保稳定性和探索反向因果关系.

主要成果:

  • 确定了四种微生物种群与NAFLD之间的因果关系,以及四种与NASH的种群.
  • 特定的种群如Enterobacteriales,Enterobacteriaceae,Lachnospiraceae UCG-004和Prevotella9与NAFLD风险增加有关.
  • 多雷亚和维隆拉与NASH风险增加有关,而奥斯基洛斯皮拉和鲁米诺科卡ceae UCG-013与NASH风险降低有关.
  • 发现NAFLD可能会增加霍尔德曼尼亚和鲁米诺菌的丰富性2,没有证据表明NASH的反向因果关系.

结论:

  • 这项研究提供了强有力的证据,证明了几个特定的肠道微生物与NAFLD/NASH之间的因果关系.
  • 这些发现为开发用于预防和治疗NAFLD及其向NASH进展的新策略提供了理论基础.