整合等离子体,MRI和认知生物标志物,以个性化预测认知领域的衰退
Elaheh Moradi1, Robert Dahnke2, Vandad Imani3
1A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Kuopio 70150, Finland.
Neurobiology of aging
|July 25, 2025
概括
血生物标志物和MRI在预测没有痴呆症的个体的认知衰退方面表现有前途. 这些标志物,特别是记忆,可以帮助预测阿尔茨海默病的早期进展.
科学领域:
- 神经科学和神经病学 神经科学和神经病学
- 生物标志物发现发现
- 机器学习在医学中的应用
背景情况:
- 血生物标志物与认知表现和阿尔茨海默病 (AD) 的下降有关.
- 早期发现认知衰退对于及时干预至关重要.
- 需要采取非侵入性措施来补充现有的诊断工具.
研究的目的:
- 调查血生物标志物的预测价值与非侵入性措施相结合,在没有痴呆症的个体中研究认知衰退.
- 开发和评估一种多式机器学习方法,用于预测各个认知领域的认知衰退率.
- 评估这些预测因素在预测进展到轻度认知障碍 (MCI) 或痴呆症方面的相关性.
主要方法:
- 开发了一种多式机器学习模型,该模型包含了血生物标记物 (粉样β 42/40比 (Aβ42/40),酸化tau 181 (p-tau181),神经丝光 (NfL),MRI,人口统计,APOE4状态和认知评估.
- 模型旨在预测记忆,执行功能,语言和视觉空间能力的认知衰退率.
- 交叉验证用于评估预测和实际认知衰退率之间的相关性.
主要成果:
- 预测与实际认知衰退率的交叉验证相关性是:0.50 (记忆),0.49 (语言),0.42 (执行功能) 和0.44 (视觉空间能力).
- 磁力共振成像显示出比单独的血生物标志物具有更大的预测重要性.
- 在等离子体生物标志物中,NfL和p-tau181显示出比Aβ42/40.0更高的预测值. 这些生物标志物显著增强了对记忆衰退和痴呆症进展的预测模型.
结论:
- 血生物标志物,特别是当与MRI,人口统计,APOE4状态和认知测量相结合时,显示出预测没有痴呆症的个体内记忆衰退的巨大潜力.
- 多式联络数据的结合在评估痴呆症进展风险方面是有效的,即使在认知上没有受损的个体中也是如此.
- 血生物标志物,特别是AD特定的生物标志物,如p-tau181和NfL,对于预测与记忆相关的衰退和进展最有价值.
相关概念视频
01:24Prosopagnosia
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
01:22Dementia l: Introduction
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...