一个双阶段的孟德尔随机化,涉及慢性阻塞性肺病,COVID-19和危险因素
吸烟增加了COVID-19的严重程度,特别是住院和严重病例. 然而,慢性阻塞性肺部疾病 (COPD) 和肺功能并不介导吸烟者的这种风险增加.
科学领域:
- 遗传学和流行病学
- 呼吸系统医学 呼吸系统医学
- 传染病研究 传染病研究
背景情况:
- 吸烟是严重COVID-19的已知的危险因素,原因是它对心脏和肺部的有害影响.
- 慢性阻塞性肺部疾病 (COPD) 和肺功能在吸烟和COVID-19严重程度之间的关联中的中介作用仍然不完全理解.
研究的目的:
- 通过使用孟德尔的随机化方法,研究COPD和肺功能对吸烟和COVID-19严重程度之间的关系的潜在调解效应.
- 为了澄清吸烟,肺功能,COPD和COVID-19结果之间的遗传联系.
主要方法:
- 采用两步的门德尔随机化设计,利用大规模的全基因组关联研究 (GWAS) 数据.
- 与吸烟,COPD,肺功能 (每秒强制呼气量 - FEV1) 和COVID-19表型 (住院治疗,严重) 相关的精选遗传变异.
- 进行了敏感性分析,以确保调查结果的可靠性.
主要成果:
- 发现了显著的遗传关联,将吸烟与严重 (OR = 1.48) 和住院 (OR = 1.67) COVID-19 的可能性增加.
- 吸烟,以终身吸烟指数衡量,显示出一致的定向效应,增加了COVID-19风险 (OR = 1.19 per SD).
- 慢性肺炎和肺功能 (FEV1) 并没有对吸烟和COVID-19严重程度之间的关联产生中介作用.
结论:
- 强有力的遗传证据支持吸烟,环境因素,肺功能和COVID-19严重程度之间的联系.
- 虽然低肺功能会加剧COPD,但它并不能调解与吸烟相关的COVID-19风险增加.
- 这些发现对公共卫生政策和针对吸烟者关于COVID-19风险的信息有重大影响.
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