脊髓细胞生物标志物变化的纵向速率与随后的 PET负担在早期养阶段之间的关联
Nisha Rani1, Abhay Moghekar2, Daniel D Callow1
1Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD.
Neurology
|January 28, 2026
概括
脑脊液 (CSF) tau和化tau (p-tau) 的纵向增加预测了阿尔茨海默病 (AD) 早期阶段未来的tau PET负担. 这些发现增强了对AD生物标志物关系的理解.
科学领域:
- 神经科学是一个神经科学.
- 生物标志物研究 生物标志物研究
- 阿尔茨海默氏症疾病的诊断方法
背景情况:
- 阿尔茨海默病 (AD) 的生物标志物,如CSF tau和粉样蛋白-β (Aβ),在症状出现前几年就发生了变化.
- 在AD早期的CSF生物标志物和定子发射断层扫描 (PET) 之间的时间关系尚未得到充分证实.
研究的目的:
- 在早期布拉克阶段的子区域中,研究CSFAD生物标志物和tau PET测量在纵向变化之间的关联.
- 确定以前的CSF生物标志物水平及其变化率是否预测了随后的陶沉积.
主要方法:
- 从正常个体中的认知衰退生物标志物队列对认知正常个体的回顾性分析.
- 化 (p-tau) 181,总 (t-tau) 和Aβ42/Aβ40在PET获得之前的12.8年内每两年测量一次.
- 线性混合效应模型用于评估CSF生物标志物变化和BRAAK I和II阶段的TAU PET负担之间的关系.
主要成果:
- 较高的CSF p-tau181和t-tau水平,以及这些标记物的较快增长率,与布拉克I和II阶段的更大的后续tau PET负担有显著的关联.
- 较低的基线Aβ42/Aβ40水平与随后的tau负担有关,但Aβ42/Aβ40的变化率没有.
- 这项研究包括120名认知不受损的个人,其中78人提供了纵向的CSF数据.
结论:
- 脊髓液tau和p-tau的纵向增加与早期布拉克阶段 (I和II) 的tau PET负担有关.
- 这些发现提供了对关键AD生物标志物的时间动态的见解.
- 需要进一步的研究才能充分理解PET-CSF关系的时间演变,因为PET是在一个时间点获得的.
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