生物标志物 生物标志物
Anne-Brita Knapskog1, Guglielmo Di Molfetta2, Heidi Vihovde Sandvig3
1Oslo University Hospital, Oslo, Norway.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
在急性中风血中,高水平的脑衍生的 (BD-tau),神经纤维光链 (NfL) 和酸化的 (p-tau181) 预测了长期的认知衰退. 这些生物标志物表明中风后持续的神经退行过程,影响中风后认知障碍 (PSCI).
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 生物标志物研究 生物标志物研究
背景情况:
- 血管风险因素增加了阿尔茨海默病 (AD) 的发病率,AD患者的中风风险更高.
- 大约50%的中风幸存者经历了中风后认知障碍 (PSCI).
- 卒中启动炎症和神经退行过程,需要对PSCI的预测生物标志物进行研究.
研究的目的:
- 分析中风患者的纵向血生物标记数据.
- 确定基线神经退行性和急性损伤生物标志物是否预测PSCI.
- 探索血生物标志物和认知衰退之间的联系,直至中风后36个月.
主要方法:
- 包括547名中风患者 (89%为缺血性) 在北海岸子研究中.
- 在多个时间点使用Simoa平台测量BD-tau,p-tau181,t-tau,Aβ40,Aβ42,GFAP和NfL的血度.
- 使用蒙特利尔认知评估 (MoCA) 尺度评估认知功能,直至中风后36个月.
主要成果:
- 3个月内BD-tau,t-tau和GFAP下降;NfL稳定了18个月;p-tau181逐渐增加.
- 在缺血性中风患者中,BD-tau,NfL和p-tau181的急性阶段度更高预测了在36个月内较低的MoCA得分.
- 关联因临床参数而减弱,并未在出血性中风患者中观察到.
结论:
- 血BD-tau,NfL,GFAP和t-tau在中风后急剧升高,稳定时间不同.
- 急性BD-tau,NfL和p-tau181度升高与更糟糕的长期认知结果相关.
- 脑卒中引发持续的神经退行,通过增加p-tau181来证明,导致PSCI.
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