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对抑郁症的遗传影响和选择进入不利的生活经历
Tamkinat Rauf1, Jeremy Freese2
1Department of Sociology, University of Wisconsin-Madison, USA.
Social science & medicine (1982)
|February 7, 2024
概括
抑郁症的多基因指数 (PGIs) 预测了许多不利的生活经历的风险,特别是那些受行为影响的经历. 这表明遗传倾向可以影响环境暴露,影响抑郁风险.
科学领域:
- 行为遗传学 行为遗传学
- 精神病学流行病学 精神病学流行病学
- 基因与环境的相互作用
背景情况:
- 全基因组关联研究发现了许多影响抑郁风险的遗传变异,通过多基因指数 (PGI) 总结.
- 然而,PGI并不能解释将基因与抑郁症联系起来的因果机制.
- 众所周知,不良生活经历会增加抑郁症的风险,通常是通过基因与环境的相关性.
研究的目的:
- 调查PGI是否预测各种不良生活经历的风险.
- 探索遗传影响如何导致差异性选择导致负面的生活经历,创造基因环境相关性.
- 为了检查明显的遗传影响抑郁风险是否可能是虚假的,由于间接的遗传影响.
主要方法:
- 利用来自美国中年和老年成年人两项大型调查的数据,评估抑郁症PGI对27种不同逆境的预测能力.
- 进行了原始的预注册调查,以测量对各种逆境的行为依赖的文化认知,增强了主要的分析.
- 在统计模型中对阶级背景和先前抑郁症进行控制.
主要成果:
- 抑郁症PGI显著预测了大多数研究的不利因素的风险.
- 预测风险在文化上被认为依赖于个人的行为所造成的逆境中显著更高.
- 调查结果表明,PGIs捕捉了与行为影响的逆境相关的风险,并在较小程度上捕捉了其他环境影响.
结论:
- 通过PGIs测量的遗传倾向似乎会影响选择特定的不良生活经历,特别是涉及个人行为的经历.
- 基因与环境的相关性在将遗传变异与抑郁症联系起来的途径中起着重要作用.
- 需要进一步的研究来阐明行为和互动过程中介于遗传差异和整体福祉之间的关系.
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