肥胖和缺血性中风后的功能结果之间的关系:孟德尔的随机化研究
Jieyi Lu1,2, Siqi Gong1,2, Juehua Zhu3
1Department of Neurology, The First Affiliated Hospital of Soochow University, 899 Pinghai Road, Suzhou, 215006, China.
概括
基因预测较高的腰与部比率 (WHR) 与缺血性中风后更糟糕的功能结果有关. 然而,体重指数 (BMI) 没有显著的关联,这表明有针对性的肥胖干预措施可以改善中风恢复.
科学领域:
- 遗传学 遗传学 是一个
- 神经学 神经学
- 公共卫生 公共卫生
背景情况:
- 肥胖对缺血性中风结果的影响受到争议,一些研究表明有保护作用 (肥胖悖论).
- 以前的研究表明,肥胖可能会恶化中风后的功能结果.
- 对肥胖的遗传倾向需要进一步调查关于中风恢复的情况.
研究的目的:
- 通过使用孟德尔随机化 (MR) 调查遗传预测的肥胖和缺血性中风后的功能结果之间的关联.
- 区分身体质量指数 (BMI) 和腰比 (WHR) 对中风后功能恢复的影响.
主要方法:
- 利用来自英国生物银行和GIANT联盟的大规模遗传数据来计算BMI和WHR仪器变量.
- 从缺血性中风遗传学功能性结果网络中获得的功能性结果数据.
- 采用反变量加权 (IVW) 分析作为主要方法,使用替代MR方法和异质性评估 (I2,Q统计) 的灵敏度分析.
主要成果:
- 无变性MR显示,在缺血性中风 (OR=1.47 [1.07, 2.02],P=0.016) 后,对WHR的遗传责任和更糟糕的功能结果 (mRS 3) 之间存在显著的关联.
- 对BMI的遗传责任与中风后的功能性结果没有显著相关 (P>0.05).
- 多变量MR分析,调整BMI,减弱了WHR和功能性结果之间的关联 (OR=1.26 [0.76,1.67],P=0.56).
结论:
- 对较高WHR的遗传倾向,但BMI不是,与缺血性中风后不良的功能结果相关.
- 研究结果表明,针对中心肥胖的干预措施 (反映在WHR) 可能有助于改善中风恢复.
- 进一步研究将WHR与中风结局联系在一起的具体机制是有必要的.
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