生物标志物 生物标志物
Jonathan Graff-Radford1, Jeremy A Syrjanen2, Prashanthi Vemuri3
1Department of Neurology, Mayo Clinic, Rochester, MN, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 24, 2025
概括
血%p-tau217水平预测tau-PET阳性,类似于粉样蛋白-PET扫描. 这一发现有助于利用血液生物标志物预测阿尔茨海默病的进展.
科学领域:
- 神经学 神经学
- 生物标志物发现发现
- 阿尔茨海默氏症疾病研究研究
背景情况:
- 准确预测tau-PET阳性对于了解阿尔茨海默病进展至关重要.
- 像粉胺PET这样的现有方法在可访问性和成本方面存在局限性.
- 对于早期和高效的疾病检测,需要新的血生物标志物.
研究的目的:
- 评估血%p-tau217的预测值,Aβ42/40比率,以及发生tau-PET阳性的粉样蛋白概率得分 (APS2).
- 为了比较血生物标志物的预测性能与粉样-PET百叶状物.
- 在独立的队列中验证这些预测因素.
主要方法:
- 利用了梅奥诊所衰老研究 (MCSA) 和BioFINDER-2队列的数据.
- 使用质谱法 (IP-MS;C2N) 测量了血标记物,并进行了粉样蛋白-PET扫描.
- 采用考克斯的比例危险模型来评估基线预测因子与事件tau-PET阳性之间的关联,并对共变量进行调整.
主要成果:
- 较高的基线血%p-tau217,粉样蛋白-PET百分位蛋白和APS2显著与两组人群中进展到tau-PET阳性的风险增加有关.
- 血Aβ42 / 40比率在MCSA队列中没有显著的关联与事件tau阳性,但在BioFINDER-2中相反相关.
- 血%p-tau217的预测性能与粉样蛋白-PET百叶蛋白相比较.
结论:
- 血%p-tau217是tau-PET转化的一个有价值的预测器,提供与粉样蛋白-PET相似的预测信息.
- 这些发现支持了血%p-tau217作为预测阿尔茨海默病进展的非侵入性生物标志物的潜力.
- 该研究强调了血生物标志物在大规模查和临床试验中的有用性.
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