一种用于定义痴呆症人口中同质子组的三体法
Arvind Caprihan1, Laura Hillmer2, Erik Barry Erhardt3
1The Mind Research Network, Albuquerque, New Mexico, 87106, USA.
Annals of clinical and translational neurology
|August 21, 2023
概括
一种新方法准确地将混合痴呆症 (MX) 分为不同的亚组,包括临床前阿尔茨海默病 (AD) 和血管疾病 (VD). 这有助于在老年大脑中诊断复杂痴呆病例.
科学领域:
- 神经学 神经学
- 生物标志物 生物标志物
- 神经退行性疾病 神经退行性疾病
背景情况:
- 在老年人中诊断痴呆症是具有挑战性的,因为多种并存的病理.
- 混合痴呆症 (MX),结合阿尔茨海默病 (AD) 和血管疾病 (VD),是常见的,但很难在死前诊断.
- 现有的诊断方法很难区分AD,VD和它们的组合.
研究的目的:
- 开发和验证一种用于区分混合痴呆症 (MX) 和识别临床前阿尔茨海默病 (AD) 和临床前血管疾病 (VD) 亚组的新方法.
- 改善复杂痴呆病理的体内诊断.
- 根据生物学和认知因素来定义不同的患者群体.
主要方法:
- 开发了一种三分体法,利用三个诊断轴:来自CSF生物标志物的AD因子 (ADF),来自白质完整性的VD因子 (VDF) 和认知功能 (Cog).
- 该方法应用于来自阿尔茨海默病神经成像计划 (ADNI) 的538名参与者的队列.
- 集群分析确定了基于ADF,VDF和Cog.的不同患者子组.
主要成果:
- 确定了8个生物学定义的子组,包括MX (9.3%),临床前VD (3.9%) 和临床前AD (13.6%).
- 认知与ADF和VDF显著相关,每个因素都有独立的贡献.
- 部分相关性证实了ADF (r=0.46) 和VDF (r=0.24) 对认知的显著影响,即使考虑到其他变量.
结论:
- 三切手术方法成功地创造了八个不同的患者群体,包括MX,临床前的AD和临床前的VD.
- 这种方法为痴呆症亚型的体内特征提供了一个有前途的工具.
- 建议进行纵向研究,以进一步验证这种多模式生物标志物聚类方法的实用性.
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