公共卫生 公共卫生
Nigus G Asefa1, Tesfa Dejenie Habtewold2, Valborg Gudmundsdottir3
1Laboratory of Epidemiology and Population Sciences, National Institute on Aging, BALTIMORE, MD, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
概括
产前环境会影响以后的健康. 出生大小全基因组关联研究 (EWAS) 通过DNA甲基化变化将早期生活因素与认知衰退联系起来.
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.
- 健康和疾病的发育起源 (DOHaD)
- 神经科学是一个神经科学.
背景情况:
- 不良的产前环境越来越多地与生命后期不良的健康结果有关.
- 早期的生活暴露可以塑造长期的健康轨迹.
- 了解这些早期影响对于公众健康至关重要.
研究的目的:
- 调查出生大小与生命晚期DNA甲基化之间的关联.
- 根据出生大小开发一个表观遗传分数.
- 评估这种表观遗传分数和认知功能之间的关系.
主要方法:
- 全表观基因组关联研究 (EWAS) 在795名参与者从年龄,基因/环境敏感性-雷克雅未克研究 (AGES-RS).
- 分析出生体重和长度数据 (1914-1935) 和晚年DNA甲基化 (MethylEPIC V1 BeadChip).
- 构建一个表观遗传分数,并评估其与认知功能的关联,调整共变量.
主要成果:
- 出生大小与cg24617612的甲基化显著相关,并且与其他47个cpg位点有暗示.
- 相关的CpG位点与神经发育异常,血管炎症和环境暴露有关.
- 表观遗传分数的增加与记忆分数的下降相关.
结论:
- 晚年DNA甲基化模式与认知能力下降有关.
- 产前暴露可能会影响表观遗传特征和长期健康.
- 生命早期的因素在塑造表观遗传修饰和健康结果方面发挥着重要作用.
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