生物标志物 生物标志物
Clara Gallay1,2, Jordi Huguet3, Armand González Escalante1,4,5
1Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, Barcelona, Spain.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
概括
产妇病史可以保护绝经后妇女的认知能力下降,患有白质过强度 (WMH). 更多的分娩与WMH较高的女性的认知变化较慢有关,独立于粉样蛋白负担.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 公共卫生 公共卫生
背景情况:
- 脑血管疾病显著影响中年人的认知能力.
- 产后的荷尔蒙变化会影响大脑血管系统,但它们对认知的影响尚不清楚.
- 这项研究调查了分娩史,白质超强度 (WMH) 和认知不受损 (CU) 的绝经后妇女的认知变化与阿尔茨海默病 (AD) 风险增加之间的联系.
研究的目的:
- 检查分娩数量和WMH如何影响CU绝经后妇女的认知变化.
- 评估分娩史对WMH和认知衰退之间的关联的缓解作用.
- 在认知轨迹上探索分娩,WMH和AD病理 (粉样阳性) 之间的相互作用.
主要方法:
- 从ALFA+研究中分析了201个CU的绝经后妇女,并对AD风险因素进行了丰富分析.
- 量化了区域WMH体积,并通过CSF Aβ42/40比率确定了粉样蛋白 (Aβ) 阳性.
- 线性回归模型评估了WMH和分娩对认知表现的影响 (PACC在±3年内变化),控制了包括Aβ状态和APOE-ε4载体在内的共变量.
主要成果:
- 在WMH或分娩数量和认知变化之间没有发现显著的独立关联.
- 粉样蛋白阳性倾向于与更的认知衰退相关.
- 一个显著的相互作用表明,更高的分娩数量减轻了头顶叶WMH和认知变化之间的关联,更多的分娩与WMH负载较高的女性的衰退相联系.
结论:
- 在CU前没有心血管疾病的绝经后妇女中,WMH和分娩数量不是3年认知结果的独立预测因素.
- 出生史调节了WMH-认知关系,这表明,不管粉样蛋白负担如何,在患有较高形WMH的女性中,对认知衰退有保护作用,不管粉样蛋白负担如何.
- 这些发现表明,几十年后,怀孕史会影响大脑血管健康和认知,因此需要对潜在机制进行进一步研究.
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