公共卫生 公共卫生
Madeline Wood Alexander1,2, Jane Paterson1, Yuen Yan Wong1,3
1University of Toronto, Toronto, ON, Canada.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 23, 2025
概括
身体活动可能会保护绝经后妇女的认知功能,特别是那些有Met等位基因和更早更年期的女性. 保持活跃可以减轻与更年期时间和影响大脑健康的遗传因素相关的风险.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 是一个遗传学.
- 老年学是指老年学的学科.
背景情况:
- 早期更年期与认知能力下降和痴呆症有关.
- 该BDNF Val66Met多态 (Met等位基) 与脑衍生的神经营养因子减少和较差的认知结果有关.
- 身体活动可以提高BDNF水平,可能抵消早期更年期或Met等位基运输的认知缺陷.
研究的目的:
- 研究更年期时年龄,BDNF基因型 (Met载体) 和体力活动对更年期后妇女认知功能的相互作用影响.
- 为了确定身体活动是否可以减轻早期更年期和BDNF Met等位基因的负面认知影响.
主要方法:
- 利用了加拿大长度老龄化研究 (N=8,101名绝经后妇女) 的基线数据.
- 评估BDNF Val66Met基因型,自我报告的更年期年龄,以及使用PASE评分的身体活动.
- 通过神经心理测试和线性回归模型分析了全球认知,并根据共变量进行调整.
主要成果:
- 较早的更年期和较低的体力活动独立地与较差的认知分数有关.
- 单独BDNF Met携带并没有显著影响认知.
- 一个显著的三方相互作用表明,较高的体力活动减轻了早期更年期的负面认知影响在Met载体中,但不是在非载体中.
结论:
- 更年期的年龄,BDNF基因型和身体活动相互作用,影响更年期后妇女的认知功能.
- 身体活动似乎特别有利于保持早期更年期的女性的认知健康,并携带BDNF Met等位基因.
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