使用孟德尔随机化解开教育和参与偏见对阿尔茨海默病的因果关系
medRxiv : the preprint server for health sciences
|July 23, 2024
概括
高等教育程度与阿尔茨海默病 (AD) 的风险降低有因果关系. 教育对阿尔茨海默病的这种保护作用似乎独立于参与偏见,这表明像认知储备这样的生物机制可能起作用.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 流行病学 流行病学
背景情况:
- 观察性研究表明,高等教育与阿尔茨海默氏症发病率较低之间存在联系.
- 选择,碰撞器和确定等潜在偏见可能会混教育和AD之间观察到的关系.
- 门德尔随机化 (MR) 提供了一种方法来调查因果关系,减轻混因素.
研究的目的:
- 调查教育程度对阿尔茨海默病 (AD) 风险的因果关系,使用双样本孟德尔随机化 (MR).
- 检查教育和参与对AD的独立影响,控制潜在的偏见.
- 探索潜在的生物机制,如认知储备,是这种关联的基础.
主要方法:
- 利用全基因组关联研究 (GWAS) 对教育成就,参与和AD的总结统计数据.
- 采用固定效应逆方差加权 (IVW) 分析作为主要的MR方法.
- 进行了敏感性分析 (MR Egger,权重中位数,权重模式) 和多变量MR (MVMR) 以评估稳定性和独立效应.
主要成果:
- 教育成就与临床诊断AD的风险降低密切相关 (OR IVW = 0.70).
- 参与健康问卷 (MHQ) 也与降低AD几率 (OR IVW = 0.325) 有关.
- 在MVMR中,教育在调整参与率 (OR IVW = 0.76) 后仍然对AD有保护作用.
结论:
- 门德尔的随机化支持教育对阿尔茨海默病 (AD) 的因果保护作用.
- 教育和AD之间的关联不太可能仅仅由参与偏见来解释.
- 生物机制,可能包括认知储备,可能会调解教育成就对AD的保护作用.
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