血p-Tau 181,白质超强度和老化中的结构性大脑变化之间的神经病理联系
Liangpeng Wei1,2,3, Wen Zhang1,2,3, Jiaming Lu1,2,3
1Department of Radiology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China.
Quantitative imaging in medicine and surgery
|February 11, 2026
概括
严重的白质过强度 (WMH) 与老年人尾状核扩大有关. 白质过强度可能会调解高血化tau 181和尾状核扩大之间的联系,表明混合的大脑病理.
科学领域:
- 神经成像是一种神经成像.
- 神经病理学神经病理学
- 老年学是一门学科.
背景情况:
- 白质过强度 (WMH) 与老化期间的大脑结构变化和阿尔茨海默病 (AD) 病理学有关.
- 了解将大脑血管病理,大脑结构变化和AD病理联系在一起的机制对于衰老研究至关重要.
研究的目的:
- 在衰老过程中探索将脑血管病理,结构性大脑变化和AD病理联系在一起的潜在机制.
- 调查白质强度过高 (WMH) 负担,阿尔茨海默病的血生物标志物和认知正常的老年人脑结构变化之间的关联.
主要方法:
- 对218名认知正常的老年人的MRI扫描和血样本进行了回顾性分析.
- 使用Fazekas得分分层分为轻度 (n=113) 和严重 (n=105) 的WMH组.
- 评估皮层厚度,皮层下核体积,血氨基酸β (Aβ) 42和化 (p-Tau) 181水平,以及大脑小血管疾病 (CSVD) 标志物. 使用调解分析来评估WMH负担的作用.
主要成果:
- 严重的WMH组与轻度WMH组相比,表现出更高的年龄和更高的血p-Tau 181水平.
- 严重的WMH与左尾状核扩大有关.
- 血p-Tau 181水平与WMH严重程度正相关 (法泽卡斯得分).
- WMH负担部分介导了血p-Tau 181水平和左尾状核扩大之间的关系.
结论:
- 严重的WMH与老年人的尾状核扩大有关.
- WMH可能会在血p-Tau 181升高和尾状核扩大之间起到调解作用,这表明混合病理.
- 强调控制血管风险因素对老化期间大脑健康的重要性.
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