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吸烟和饮酒对端粒长度的影响:一个单变量和多变量门德尔随机化研究
Changqiang Feng1,2, Songxin Zhong1,2, Rida Li1,2
1Department of Neurology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China.
Medicine
|October 1, 2025
概括
这项研究使用了门德尔的随机化来研究吸烟和饮酒对端粒长度的因果关系. 研究结果表明,吸烟和饮酒都会导致端粒长度缩短,这表明这些干预措施可能会减缓衰老.
科学领域:
- 遗传学和衰老研究研究
- 衰老的生物标志物
- 生活方式和健康结果.
背景情况:
- 端粒长度是生物衰老的生物标志物,与与年龄相关的疾病有关.
- 观察性研究表明,生活方式因素会影响端粒磨损,但因果关系仍在争论中.
- 吸烟,酒精和端粒长度之间的因果关系需要严格的调查.
研究的目的:
- 研究吸烟和饮酒对端粒长度的因果关系.
- 使用孟德尔随机化 (MR) 分析来进行强大的因果推断.
- 为影响细胞衰老的生活方式因素提供遗传证据.
主要方法:
- 孟德尔随机化 (MR) 分析使用大规模的基因总结统计数据来分析吸烟开始,酒精消费和端粒长度.
- 单变量和多变量MR分析以评估独立的因果关系.
- 灵敏度分析包括科克兰Q测试,MR埃格尔拦截测试,施泰格过,留出一个漏洞分析和漏洞图,以确保有效性和可靠性.
主要成果:
- 基因预测的吸烟开始与较短的端粒长度显著相关 (IVW:β = -0.08,P <.001).
- 对饮酒的遗传倾向与较短的端粒长度有因果关系 (IVW:β = -0.06,P = .006).
- 灵敏度分析证实了这些发现的稳定性和定向因果关系,没有检测到显著的质变异.
结论:
- 这项研究提供了强有力的遗传证据,表明吸烟和饮酒都会导致端粒长度缩短.
- 针对吸烟和饮酒的干预措施可能是减缓细胞衰老的有效策略.
- 减少吸烟和酒精的暴露可能通过保持端粒长度来减轻与年龄有关的疾病的风险.
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