祖母与OXTR DNA甲基化减少有关
James K Rilling1, Minwoo Lee2, Carolyn Zhou2
1Department of Psychology, Emory University, United States; Department of Psychiatry and Behavioral Sciences, Emory University, United States; Center for Behavioral Neuroscience, Emory University, United States; Emory National Primate Research Center, Emory University, United States; Center for Translational Social Neuroscience, Emory University, United States.
Psychoneuroendocrinology
|July 13, 2024
概括
祖母显示OXTR基因甲基化减少,与积极的情绪和照顾有关. 这种表观遗传变化可能会支持照顾无血缘关系的孩子的动机.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 心理学 心理学 心理学
背景情况:
- 哺乳动物的家长和全家长护理涉及增加的催产素信号传递.
- 祖母在人类家庭中扮演着至关重要的角色,作为全父母.
- 动物模型表明,外围的Oxtr甲基化与大脑的Oxtr表达相关.
研究的目的:
- 调查祖母照顾是否与较低的外周OXTRDNA甲基化有关.
- 探索OXTR甲基化,积极情绪和祖母的护理参与之间的关系.
- 检查通过祖母OXTR甲基化对神经反应的调制.
主要方法:
- 在祖母和非祖母对照中比较了外围OXTR DNA甲基化.
- 与祖母对孙子的自我报告的积极感受相关的OXTR甲基化水平.
- 评估了甲基化,积极情绪和照顾者参与之间的联系.
- 使用fMRI测量对孙子照片的神经反应,检查OXTR甲基化效应.
主要成果:
- 与对照人群相比,祖母在特定的OXTR区域中表现出较低的DNA甲基化.
- OXTR甲基化与祖母的积极情绪有很强的相关性,预测了护理.
- 有限证据表明,OXTR甲基化调节神经对自己孙子照片的反应.
- 在甲基化和对未知的孙子照片的神经反应之间发现了负相关性.
结论:
- 祖母照顾与减少外围OXTR甲基化有关.
- 对孙子的积极情绪与甲基化和照顾行为有关.
- 通过OXTR传递的催产素信号可能会支持对所有父母的照顾的动机,特别是对非亲属儿童的照顾.
- 需要进一步的纵向研究来确认在过渡到祖母期间的甲基化变化.
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