血清克洛托水平,大脑结构和认知表现
Alec M Czaplicki1,2, Ira Frahmand Driscoll1,2, Yue Ma1,2
1Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, Madison.
JAMA neurology
|February 2, 2026
概括
较高的克洛托水平可能会保护老年人患阿尔茨海默病 (AD) 风险的认知功能免受大脑缩. 在年轻的成年人中没有观察到这种效应,这表明klothootho.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 生物化学 生物化学
背景情况:
- 心室-大脑体积比 (VBR) 表明大脑缩,并预测阿尔茨海默病 (AD) 的进展.
- 更高的克洛托度与更好的认知有关,但其在修改VBR-认知联系中的作用尚不清楚.
研究的目的:
- 调查血清克洛托是否能缓和VBR与认知之间的关联.
- 为了确定这种适度是否在年轻人 (≤61.6岁) 和老年人之间有所不同.
主要方法:
- 横截面研究 (2009-2023) 使用来自威斯康星州AD研究中心和注册表的数据.
- 包括308名非认知障碍的中年和老年人,大多数人父母有AD病史.
- 测量了血清可溶性α-klotho,VBR和认知功能 (全球认知,执行功能,延迟回忆,立即学习).
主要成果:
- 在整个样本中发现了显著的VBR × klotho相互作用:尽管VBR更高,但更高的klotho与更好的全球认知和执行功能相关.
- 在年轻的成年人中,这种相互作用并不显著.
- 在老年人中,更高的克洛托与更好的全球认知,执行功能和即时学习有关,即使增加了VBR.
结论:
- 血清中klotho水平似乎改变了老年人患AD风险的脑缩和认知之间的负面关联.
- 克洛托的神经保护作用可能取决于年龄,在老年人中更为明显.
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