生物标志物 生物标志物
Ashwati Vipin1, Gurveen Kaur Sandhu2, Rasyiqah Binte Shaik Mohamed Salim3
1Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
高化-tau 181 (p-tau181) 与通过白质超强度 (WMH) 减少灰质 (GM) 脑 perfusion 有关. 这表明p-tau181可能通过影响大脑血液流动而导致痴呆风险.
科学领域:
- 神经科学是一个神经科学.
- 生物标志物 生物标志物
- 神经成像是一种神经成像.
背景情况:
- 减少大脑输液是认知能力下降和痴呆症的标志.
- 像Aβ1-40这样的等离子体生物标志物和神经炎症标志物与血管衰老有关.
- 大脑血流 (CBF) 变化与核心病理 (Aβ1-40,tau) 之间的关系尚未完全理解.
研究的目的:
- 为了研究血Aβ1-40,酸化-tau 181 (p-tau181) 和年龄对大脑输液的影响.
- 探索白质超强度 (WMH) 和质纤维酸蛋白 (GFAP) 在这些关系中的调解作用.
- 阐明影响灰质 (GM) perfusion 的直接和间接因果途径.
主要方法:
- 利用了来自新加坡生物标志物和认知队列研究的数据.
- 雇佣的横截面动脉脊柱标记输液MRI和血生物标志物的评估 (p-tau181,Aβ1-40,GFAP).
- 进行了路径分析,以建模预测因子 (p-tau181,Aβ1-40,年龄),调解因子 (WMH,GFAP) 和结果 (GM输液) 之间的关系.
主要成果:
- p-tau181和年龄显著预测了GFAP和WMH.
- 增加的WMH体积与减少的GM perfusion有关.
- 观察到p-tau181对转基因输液有显著的间接作用,由WMH介导,表明p-tau181通过WMH促进了低输液.
结论:
- p-tau181和年龄间接通过WMH和GFAP影响转基因输液.
- 增加的p-tau181似乎通过增加WMH负担对转基因低 perfusion 有因果作用.
- 这些发现突出了潜在的途径,将tau病理与与痴呆风险相关的脑血管变化联系起来.
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