体重指数,2型糖尿病和骨矿物质密度之间的因果关系:孟德尔的随机化
Weiwei Ma1, Xiaohong Zhou1, Xin Huang1
1School of Acupuncture-Moxibustion and Orthopedics, Hubei University of Chinese Medicine, Wuhan, 430061, China.
PloS one
|October 2, 2023
概括
更高的身体质量指数 (BMI) 和2型糖尿病与骨矿物质密度 (BMD) 有积极的联系. 2型糖尿病中介于BMI对BMD的影响,这表明两者在骨健康方面都起着保护作用.
科学领域:
- 遗传学和流行病学
- 代谢障碍 代谢障碍 代谢障碍
- 骨健康 骨健康 骨健康
背景情况:
- 体重指数 (BMI) 表示的肥胖和2型糖尿病是全球普遍存在的健康问题.
- 像BMI和2型糖尿病与骨矿物质密度 (BMD) 等代谢因素之间的关系需要进一步澄清.
- 门德尔随机化 (MR) 提供了一种强大的方法来调查暴露和结果之间的因果关系,最大限度地减少混因素.
研究的目的:
- 阐明身体质量指数 (BMI),2型糖尿病和骨矿物质密度 (BMD) 之间的因果关系.
- 为了确定2型糖尿病是否介导着BMI对BMD的影响.
- 为了利用孟德尔的随机化 (MR) 方法进行可靠的推断.
主要方法:
- 利用来自IEU GWAS数据库的BMI,2型糖尿病和BMD的全基因组关联研究 (GWAS) 数据.
- 采用单变量,多变量和介导的门德尔随机化 (MR) 分析.
- 应用逆方差加权,MR-Egger回归和加权中位数方法来进行可靠的估计.
主要成果:
- 无变MR表明BMI和2型糖尿病与BMD的积极关联.
- 在多变量MR中,BMI和BMD之间的关联变得无意义,而2型糖尿病仍然与BMD有显著的关联.
- 介导式MR分析显示,2型糖尿病通过BMI调节BMD.
结论:
- 这项研究提供了BMI,2型糖尿病和BMD之间的积极因果关系的证据.
- 2型糖尿病在BMI如何影响BMD方面起着调解作用.
- 增加的BMI和2型糖尿病似乎都对骨矿物质密度有保护作用.
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