对阿尔茨海默氏症的认知表型和解释 血液生物标志物
Vincent Bouteloup1,2, Nicolas Villain3,4, Jean Sebastien Vidal5,6
1Bordeaux Population Health, University of Bordeaux, Inserm, UMR1219, Bordeaux, France.
JAMA neurology
|April 4, 2025
概括
血化tau 217 (p-tau217) 能够有效地预测大脑粉样化症,但其准确性因没有痴呆症的个体的认知表现而异. 详细的认知表型与p-tau217血液检测一起至关重要,以防止误诊.
科学领域:
- 神经学 神经学
- 生物标志物研究 生物标志物研究
- 阿尔茨海默氏症疾病的诊断方法
背景情况:
- 血化tau 217 (p-tau217) 在预测大脑粉症方面表现出有效性.
- 在不同认知特征的非痴呆个体中,p-tau217的诊断效用需要进一步研究.
研究的目的:
- 评估血液p-tau217的准确性,正预测值 (PPV) 和负预测值 (NPV) 如何在没有痴呆症的患者的不同临床表现中进行预测.
- 确定详细的认知表型对p-tau217结果的解释的影响.
主要方法:
- 分析了两个潜在的观察队列 (MEMENTO和BALTAZAR),包括具有主观认知障碍 (SCI),常见阿尔茨海默病 (AD) 现型MCI (cAD-MCI) 和不常见的AD或其他现型MCI (uAD-MCI) 的参与者.
- 测量了血液中的p-tau217度,并通过脑脊液 (CSF) 或正子发射断层扫描 (PET) 确定了大脑粉症状态.
- 纳入年龄,性别和APOE基因型的后勤回归模型被用于推导氨基粉症概率,分析了已发表和内部开发的切断点.
主要成果:
- 在认知表型 (SCI,cAD-MCI,uAD-MCI) 之间,大脑粉症的患病率有显著差异.
- 测量受体操作特征曲线 (AUC) 下面面积的p-tau217模型的诊断性能在cAD-MCI子组 (0.91) 中最高.
- 积极的预测值 (PPV) 从52.6%到90.0%不等,取决于所使用的子组和切割点,而负预测值 (NPV) 仍然很高 (84.2%94.6%).
结论:
- 粉样蛋白的患病率和血液p-tau217的诊断性能用于预测大脑粉样蛋白症受认知表型的影响.
- 在临床实践中,在使用p-tau217等血液生物标志物时,全面的认知表型是必不可少的,以避免潜在的误诊,特别是假阳性.
- 这些发现强调需要根据个体患者的认知概况对p-tau217结果进行细致的解释.
相关概念视频
Alzheimer's Disease: Overview
350
Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
The clinical diagnosis of AD hinges on the presence of memory and other cognitive impairments. Biomarkers, such as changes in Aβ...
350
Alzheimer's Disease: Treatment
133
Alzheimer's Disease (AD), a neurodegenerative disorder, is pathologically identified by amyloid plaques and neurofibrillary tangles composed of tau protein. AD pharmacotherapy aims to manage cognitive symptoms, delay disease progression, and treat behavioral symptoms. The treatment is primarily symptomatic and palliative, with no definitive disease-modifying therapy available. Cholinesterase inhibitors, including donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne), are...
133


