整个生命过程中的累积压力和成年期的生物衰老
Shakira F Suglia1, Elizabeth S Clausing, Rachel C Shelton
1From the Department of Epidemiology (Suglia), Rollins School of Public Health, Emory University, Atlanta, Georgia; School of Global Integrative Studies (Clausing) and Center for Brain, Biology, and Behavior (Clausing), University of Nebraska-Lincoln, Lincoln, Nebraska; Department of Sociomedical Sciences (Shelton), Mailman School of Public Health, New York, New York; Department of Human Genetics (Conneely, Baccarelli), School of Medicine, Emory University, Atlanta, Georgia; Department of Environmental Health (Prada-Ortega), Mailman School of Public Health, New York, New York; Department of Epidemiology (DeVivo), Harvard T. H. Chan School of Public Health; Channing Division of Network Medicine (DeVivo), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts; Department of Epidemiology (Factor-Litvak), Mailman School of Public Health, New York, New York; Child Health and Development Studies (Cirillo, Cohn), Public Health Institute, Berkeley; and Department of Sociology (Link), University of California Riverside, Riverside, California.
在一生中累积的心理社会压力加快生物衰老,特别是在女性. 这种加速表观遗传衰老与童年和成人压力有关,尽管吸烟状态影响了这种关联. 端粒长度没有受到影响.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 老年学是一门学科.
- 心理社会流行病学心理学
背景情况:
- 心理社会压力因素与成人加速生物衰老有关.
- 很少有研究研究了生命过程压力因素对生物衰老的影响.
研究的目的:
- 检查整个生命过程中累积的心理社会压力因素与生物衰老之间的关联.
- 研究生命过程压力因素与表观遗传衰老之间的关系中的性别差异.
主要方法:
- 在359个人中,在多个生命点 (出生,9,15,50岁) 评估了经济,社会和创伤性压力因素.
- 使用6个表观遗传钟和50岁时的端粒长度测量了表观遗传年龄.
- 分析了使用回归模型的年龄加速,并根据种族,性别和吸烟状况等共变量进行调整.
主要成果:
- 总体生活压力,童年压力和成人压力独立预测了加速表观遗传衰老 (GrimAge) 和更快的衰老速度 (DunedinPace).
- 在调整吸烟状况后,关联得到了减弱.
- 儿童时期的压力与女性的表观遗传衰老加速有关,但与男性无关;与端粒长度没有发现任何关联.
结论:
- 累积的生命过程压力因素与加速表观遗传年龄有关,具有显著的性别差异.
- 在暴露于童年压力的女性中,加速衰老更为明显.
- 需要对不同种群进行进一步的研究来证实这些发现.
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