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与皮症相关的特征和严重抑郁症之间的因果关系:双向,双样本的门德尔随机研究
Yu Zhang1,2, Mengfan Yang1, Mingquan Li3
1Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.
肌肉软弱,而不是肌肉质量低,增加了主要抑郁症 (MDD) 的风险. 抑郁症还会导致骨肌肉质量丧失,从而建立了sarcopenia和抑郁症之间的双向因果关系.
科学领域:
- 遗传学 是一个遗传学.
- 流行病学 流行病学
- 老年学是一门学科.
背景情况:
- 观察性研究表明,缩症和抑郁症之间存在联系,但由于混因素,因果关系尚不清楚.
- 现有研究可能受到潜在偏差的限制,需要强大的方法来建立因果关系.
研究的目的:
- 通过使用孟德尔随机化 (MR) 调查缩症和严重抑郁症 (MDD) 之间的因果关系.
- 区分肌肉强度和骨肌肉质量对MDD风险的因果关系.
主要方法:
- 采用双向,双样本的孟德尔随机化 (MR) 设计.
- 使用全基因组关联研究总结数据用于仪器变量.
- 应用逆方差加权,MR-Egger和加权中位数方法进行MR分析.
- 进行了敏感性分析,包括异质性,性和留出一个测试.
主要成果:
- 握力降低和步行速度减慢导致MDD风险增加 (ORs < 1,P < .05).
- 大型抑郁症 (MDD) 导致尾肌肉量减少 (β = -0.065,P = .005).
结论:
- 建立了与肉症相关的特征和MDD之间的双向因果关系.
- 肌肉力量的损失,而不是肌肉质量的减少,与较高的MDD风险有关.
- 患有MDD的个体容易减少骨肌肉质量.
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