探索肠道微生物群和阿尔茨海默病之间的因果关系:双向孟德尔随机化研究
Anqi Chen1, Yuquan Wang1, Yue-Qing Hu1,2
1State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China.
Journal of Alzheimer's disease reports
|August 8, 2024
概括
这项研究使用了门德尔的随机化来研究肠道微生物群和阿尔茨海默病 (AD) 之间的因果关系. 发现某些肠道细菌增加了AD风险,而其他细菌可能会提供保护.
科学领域:
- 微生物组研究的研究.
- 神经退行性疾病遗传学 神经退行性疾病遗传学
- 人类健康和疾病.
背景情况:
- 观察性研究表明肠道微生物群与阿尔茨海默氏症 (AD) 之间存在联系,但因果关系仍然未被证明.
- 了解肠-大脑轴对于阿尔茨海默病的发病过程至关重要.
- 现有研究强调了肠道微生物群与AD关系的因果关系证据的必要性.
研究的目的:
- 确定特定肠道微生物群与阿尔茨海默病 (AD) 风险之间的因果关系.
- 使用门德尔随机化 (MR) 来从观测数据中推断因果关系.
- 确定影响AD发展的特定细菌种群.
主要方法:
- 采用了两个样本的门德尔随机化 (MR) 研究设计.
- 使用全基因组关联研究 (GWAS) 关于AD (85,934例,401,577例对照) 和肠道微生物群 (MiBioGen联盟) 的总结统计数据.
- 进行了逆方差加权 (IVW) 和灵敏度分析,以评估因果关系并排除变性.
主要成果:
- 七种肠道微生物种群表现出与AD风险的因果关系.
- 顺序 *Selenomonadales*,家族 *Pasteurellaceae*,和属 *Methanobrevibacter* 与阿尔茨海默病风险增加有关.
- 类*Mollicutes*,属*Ruminiclostridium9*,属*Clostridiuminnocuumgroup*和属*Eggerthella*与降低了阿尔茨海默病的风险有关.
结论:
- 这项研究为特定肠道微生物群在阿尔茨海默病 (AD) 中的作用提供了因果关系证据.
- 研究结果表明,在肠道微生物群中,有潜在的治疗点,用于AD的预防或治疗.
- 肠-大脑轴代表了未来AD研究和临床干预的有希望的途径.
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