预示不同痴呆实体发病的认知轨迹:使用NACC数据库进行描述性的纵向研究
Ioannis Liampas1, Nefeli Dimitriou2, Vasileios Siokas3
1Department of Neurology, School of Medicine, University Hospital of Larissa, University of Thessaly, Mezourlo Hill, Larissa, 41100, Greece. iliampas@uth.gr.
Aging clinical and experimental research
|May 23, 2024
概括
认知能力下降在痴呆症发病前几年就会发生变化. 阿尔茨海默病 (AD) 早期影响记忆力,而莱维体痴呆症 (LBD) 和血管痴呆症 (VD) 影响执行功能比AD更早.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 认知心理学 认知心理学
背景情况:
- 痴呆症是一个重大的全球健康挑战,特别是在老年人群中.
- 了解临床前认知变化对于早期诊断和干预至关重要.
- 四种最常见的痴呆类型 - - 阿尔茨海默病 (AD),莱维体痴呆症 (LBD),血管痴呆症 (VD) 和前性痴呆症 (FTD) - - 呈现出不同的病理途径.
研究的目的:
- 划出AD,LBD,VD和FTD发病前的10年临床前认知轨迹.
- 将这些轨迹与认知不受损 (CU) 个体的轨迹进行比较.
主要方法:
- 来自国家阿尔茨海默氏症协调中心 (NACC) 数据库的纵向数据的分析,包括60岁及以上的参与者.
- 形成四个不同的预症状痴呆症组 (AD,LBD,VD,FTD) 和一个CU比较组.
- 每年进行综合性认知评估,包括情节性记忆,口语流,命名,处理速度,注意力,执行功能和认知灵活性,使用调整的一般线性模型进行分析.
主要成果:
- 在痴呆症类型之间观察到认知轨迹的显著差异,直到诊断前10年.
- 与血管痴呆症 (VD) 和莱维体痴呆症 (LBD) 组相比,阿尔茨海默病 (AD) 参与者在情节性记忆方面出现了较早的下降.
- 前性痴呆症 (FTD) 以独特的口头流利和命名模式而闻名,而LBD和VD与AD相比,更早地表现出执行功能和处理速度缺陷.
结论:
- 在最常见的痴呆类型中,症状前的认知轨迹是异质的.
- 这些独特的临床前模式为在临床诊断前几年区分痴呆症亚型提供了潜在的生物标志物.
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