临床表现 临床表现
Yi Jin Leow1, Justin Jit Hong Ong2, Nagaendran Kandiah2
1nil, nil, nil, Nicaragua.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
主观认知衰退 (SCD) 患有粉样蛋白和血管问题的患者表现出最严重的认知衰退. 单独的粉样蛋白阳性可能会导致早期的情绪变化,突出SCD作为干预的关键临床前阶段.
科学领域:
- 神经学 神经学
- 神经科学是一个神经科学.
- 老年学是指老年学的学科.
背景情况:
- 主观认知衰退 (SCD) 是阿尔茨海默病 (AD) 的一个关键早期阶段.
- 了解SCD机制对于早期阿尔茨海默氏症干预至关重要.
- 这项研究检查了粉样蛋白病理,脑血管负担和SCD中的认知行为表型.
研究的目的:
- 研究粉样蛋白和血管病理对SCD认知和行为结果的综合影响.
- 使用液体生物标志物,神经成像和神经心理测试,划出临床前阿尔茨海默病的发展轨迹.
- 确定与不同组合的粉样蛋白和血管负担相关的独特模式.
主要方法:
- 根据粉样β (Aβ42/40) 和血管负担 (Fazekas评分) 将270名患有SCD的认知正常人分为四组.
- 使用ANOVA和千平方测试来分析群体差异.
- 评估了认知功能 (MoCA,ROCF,TMT-B),生物标志物 (GFAP,p-tau181/Aβ42),神经成像 (Fazekas,缺口,缩) 和行为方面 (DASS,MBI-C).
主要成果:
- 粉样蛋白阳性/血管阳性 (A+V+) 组是最年长的,表现出最严重的认知障碍 (全球,视觉空间,执行功能).
- 血管阳性组患有心血管风险因素和脑血管疾病神经成像标志物的患病率较高.
- 单独的粉样蛋白阳性 (A+V-) 与增加的压力和冷漠,以及更高的GFAP水平有关.
结论:
- 在SCD中共存的粉样蛋白和血管病理协同恶化认知功能.
- 单独的粉样蛋白阳性可能有助于SCD的早期情绪和行为变化.
- 在SCD中整合认知,生物标志物和行为评估对于识别高风险个体和指导干预至关重要.
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