生物标志物 生物标志物
Karly Cody1, Andrzej Sokolowski2, Joseph R Winer1
1Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
这项研究表明,粉样蛋白和蛋白PET成像揭示了阿尔茨海默病在临床阶段的不同生物阶段. 结果突出了NACC和ADNI队列之间疾病进展的差异,特别是在痴呆症中.
科学领域:
- 神经学 神经学
- 神经成像是一种神经成像.
- 生物标志物 生物标志物
背景情况:
- 阿尔茨海默病研究中心 (ADRC) 的参与者被分析了基于粉样蛋白和蛋白的PET阶段.
- 临床异质性是理解阿尔茨海默病进展的一个关键因素.
研究的目的:
- 在临床连续过程中描述基于粉样蛋白和粉样蛋白的阶段的频率.
- 为了在NACC和ADNI群体之间比较这些基于PET的阶段.
主要方法:
- 包括1013名NACC和926名ADNI参与者,他们拥有PET成像和诊断数据.
- 用粉样蛋白PET (粉样蛋白) 和粉样蛋白PET (高斯混合模型) 来定义生物阶段.
- 顺序逻辑回归模拟了基于年龄,队列和临床阶段的生物阶段的流行情况.
主要成果:
- 在NACC队列中,痴呆症病例较多,其中非AD病因的病因占35%.
- 型PET阶段随着粉样蛋白和临床严重程度的增加.
- 与ADNI相比,NACC显示D阶段 (晚期tau病理) 的比例更高.
结论:
- 基于粉样和PET的分期框架适用于异质样本.
- 在NACC和ADNI队列之间存在生物学阶段分布的显著差异.
- 年龄较小与痴呆症中晚期tau病理 (阶段D) 的概率较高有关.
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