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Updated: May 12, 2025

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二手烟暴露与加速生物衰老之间的关联:基于人口的研究和门德尔随机化分析
Yue Zhu1, Yufan Gao2, Yangguang Lu3
1The School of Public Health and Management, Wenzhou Medical University, Wenzhou, China.
Tobacco induced diseases
|May 9, 2025
概括
暴露于二手烟 (SHS) 加快了生物衰老,更高的暴露导致更显著的衰老效应. 这种加快的衰老部分是由糖尿病介导的,这强调了减少SHS暴露的重要性.
科学领域:
- 环境健康 环境健康
- 老年学是指老年学的学科.
- 代谢疾病 代谢疾病
背景情况:
- 衰老是一个复杂的生物过程,受氧化应激的影响.
- 吸烟对衰老的直接影响已知,但二手烟 (SHS) 的影响不太清楚.
- 暴露于SHS与慢性炎症和氧化应激有关,可能加速衰老.
研究的目的:
- 调查SHS暴露与生物衰老之间的关联.
- 探索糖尿病在SHS-衰老关系中的调解作用.
- 通过使用遗传方法,确定SHS暴露与生物衰老之间的因果关系.
主要方法:
- 分析NHANES数据 (1999-2010) 使用血清丁因SHS暴露和生物衰老的表型年龄.
- 多因素线性回归和受限立方线来评估剂量反应关系.
- 采用GWAS数据的双样本孟德尔随机化 (MR) 来确定工作场所SHS暴露和年龄加速之间的因果关系.
主要成果:
- 暴露于SHS与增加的生物衰老有关 (低暴露0.37年,高暴露0.76年).
- 在SHS暴露和生物衰老之间观察到U形的剂量反应曲线.
- 糖尿病占SHS与衰老相关的31.25%;MRI证实了工作场所SHS与加速衰老 (3.05年) 之间的因果关系.
结论:
- 暴露在二手烟中显著加快了生物衰老.
- 糖尿病在SHS暴露和加速衰老之间的关系中起着调解作用.
- 遗传证据支持因果关系,突出了减少SHS暴露的必要性,以防止过早衰老.
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