时间型,白天小睡和睡眠时间在生物和功能衰老中的不同作用:一个单变量和多变量门德尔随机化研究
Zheng Zhang1,2,3, Xinglian Wang1,2,3, Haitang Qiu4
1Department of Sleep and Psychology, Chongqing Health Center for Women and Children, Chongqing, 401147, China.
Clinical epigenetics
|March 13, 2026
概括
白天小睡与不良的衰老有关,而更长的睡眠时间可以防止虚弱. 时型 (您的自然睡眠偏好) 有利于面部衰老和认知,独立于其他睡眠习惯.
科学领域:
- 遗传学 是一个遗传学.
- 衰老研究研究 衰老研究
- 睡眠科学 睡眠科学
背景情况:
- 观察性研究表明,睡眠特征与衰老之间存在联系.
- 睡眠行为对衰老的因果关系和明显影响尚不清楚.
研究的目的:
- 通过使用孟德尔随机化来研究时型,白天小睡和睡眠时间对多种衰老结果的因果关系.
- 为了区分睡眠特征对衰老的总和直接影响.
主要方法:
- 两个样本的孟德尔随机化 (MR) 使用大型全基因组关联研究 (GWAS) 数据.
- 对白细胞端粒长度,面部衰老,表观遗传钟 (GrimAge等) 的评估影响. ),脆弱性和认知能力.
- 使用反变量加权 (IVW),MR-Egger,加权中位数和MR-PRESSO进行灵敏度分析;使用单变量 (UVMR) 和多变量MR (MVMR) 来估计总和直接影响.
主要成果:
- 白天小睡显示与端粒长度,面部衰老,GrimAge,脆弱性和认知不变的MR的不良关联.
- 年代型与表观遗传衰老 (HannumAge,IEAA) 和认知有关.
- 较长的睡眠时间与虚弱相反地相关.
- 在多变量MR中,小睡仍然与GrimAge和虚弱相关;时间型对面部衰老和认知有保护作用;睡眠时间和虚弱之间的反向关联得到加强.
结论:
- 睡眠特征对衰老有明显的,部分独立的因果影响.
- 过度小睡会对衰老和脆弱产生负面影响.
- 充足的睡眠时间提供了对脆弱性的独立保护.
- 时刻型对面部衰老和认知功能有积极的影响,即使考虑到其他睡眠行为.
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