产前和生命早期暴露于空气污染物和表观遗传衰老加速
Dong-Wook Lee1, Youn-Hee Lim2, Yoon-Jung Choi3
1Department of Occupational and Environmental Medicine, Inha University Hospital, Inha University, Incheon, the Republic of Korea.
Ecotoxicology and environmental safety
|August 3, 2024
概括
产前和早期儿童暴露于空气污染,包括颗粒物和臭氧,与儿童的表观遗传衰老加速 (EAA) 有关. 这表明空气污染可能会从年轻时引起过早的生物衰老.
科学领域:
- 环境表观遗传学环境表观遗传学
- 儿科 环境卫生 儿童 环境卫生
- 分子流行病学分子流行病学
背景情况:
- 产前和幼儿期暴露于环境空气污染是一个日益严重的公共卫生问题.
- 表观遗传衰老加速 (EAA) 是生物衰老的生物标志物.
- 了解早期环境暴露对表观遗传衰老的影响对于儿童健康至关重要.
研究的目的:
- 调查产前和幼儿期空气污染暴露与六岁时表观遗传衰老加速 (EAA) 之间的关联.
- 检查特定的空气污染物,包括PM2.5,PM10,NO2,O3,CO和SO2.
- 利用来自环境和儿童发展队列 (EDC队列) 的数据.
主要方法:
- 估计空气污染水平是基于怀孕期间和六岁前一年的住宅地址.
- 全血中的甲基化水平在6岁时被测量.
- 四个表观遗传时钟 (Horvath的,Horvath的皮肤和血液,PedBE,Wu的) 用于估计EAA.
- 用多变量线性回归模型来分析关联.
主要成果:
- 增加对PM2.5和CO的产前暴露与显著的EAA有关.
- 根据Horvath和Wu的时钟,儿童中增加的PM2.5暴露与EAA有关.
- 儿童时期暴露于PM10和O3也与特定表观遗传钟中的EAA有关.
结论:
- 产前和幼儿期暴露于环境空气污染物与儿童的表观遗传年龄加速有关.
- 这些发现表明,空气污染可能会导致过度的生物衰老,甚至从产前期开始.
- 早期暴露于空气污染是儿童加速生物衰老的潜在危险因素.
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