血压升高在中年后期妇女中加速白质大脑衰老:英国生物银行的一项门德尔随机化研究
Li Feng1, Zhenyao Ye2,3, Chen Mo4
1Department of Nutrition and Food Science, College of Agriculture & Natural Resources, University of Maryland, College Park.
Journal of hypertension
|September 8, 2023
概括
高血压 (BP) 加快白质大脑衰老,特别是在中年女性. 控制BP可能有助于减轻这个人口中的老龄化影响.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学是一种遗传学.
- 心脏病学 心脏病学
背景情况:
- 血压升高是认知障碍和脑血管疾病的已知危险因素.
- 血压对白质大脑衰老的确切因果影响仍然不完全理解.
研究的目的:
- 为了研究血压和白质大脑衰老之间的因果关系.
- 为了确定这种关系是否根据性别和年龄有所不同.
主要方法:
- 利用了大量的英国生物库队列 (N=228,473) 与遗传和BP数据.
- 开发了一种机器学习模型,从白质微观结构 (微分异性) 计算大脑年龄差距 (BAG).
- 采用双样本门德尔随机化来评估BP对BAG白质的因果作用.
主要成果:
- 患有高血压的个体表现出明显更老的白质大脑年龄.
- 门德尔的随机化揭示了透气血压 (DBP) 对白质BAG的积极因果作用.
- 这种因果作用在50-69岁的女性中最为明显.
结论:
- 高血压加速白质大脑衰老,特别是在中年后期的女性中.
- 研究结果表明,针对这个年龄段的女性,有针对性地制定高血压管理策略,以保持大脑健康.
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