血氨基酸-β 42/40与在轻度认知障碍中语义入侵错误的百分比之间的关联
Rosie E Curiel Cid1,2, Alexandra Ortega1,2, David Vaillancourt1,3
11Florida Alzheimer's Disease Research Center (ADRC), Miami, FL, USA.
Journal of Alzheimer's disease : JAD
|October 11, 2024
概括
语义入侵错误 (SIE) 是阿尔茨海默病 (AD) 病理学的敏感标志物. 患有amnestic轻度认知障碍 (aMCI) 个体中较高的SIEs与粉样β (Aβ) 阳性相关,这表明SIEs反映了AD进展.
科学领域:
- 神经科学是一个神经科学.
- 生物标志物 生物标志物
- 认知科学 认知科学
背景情况:
- 语义入侵错误 (SIEs) 是阿米洛伊德-β (Aβ) 负担的敏感和特定指标,在老年人中具有无记忆性轻度认知障碍 (aMCI).
- 血Aβ生物标志物,特别是Aβ42 / 40比率,在临床环境中对阿尔茨海默病 (AD) 诊断越来越重要.
研究的目的:
- 调查血Aβ状态和认知缺陷,特别是SIE在aMCI的个体之间的关联.
- 确定SIEs是否可以作为与AD病理学相关的临床信息标记.
主要方法:
- 这项研究包括来自佛罗里达州ADRC的119名老年人,将他们分为aMCI粉样蛋白β阳性 (Aβ+) 和阴性 (Aβ-) 组,以及一个认知无损 (CU) Aβ-组.
- 使用质谱法 (Quest AD-DetectTM测定) 测量了血Aβ42/40比率,截止值为0.160,以确定Aβ状态.
- 认知表现被评估,重点是SIEs,特别是未能从主动语义干扰 (frPSI) 中恢复.
主要成果:
- aMCI Aβ+组显示SIE的百分比最高,其次是aMCI Aβ-组,而CU Aβ-组则是最低的.
- 即使对全球认知障碍进行调整后,aMCI Aβ+个体与aMCI Aβ-个体相比,表现出更多与frPSI相关的SIE.
- 在8.3%的CU Aβ-,37.8%的aMCI Aβ-,和74.0%的aMCI Aβ+参与者中存在frPSI的赤字.
结论:
- SIEs,特别是那些反映frPSI的SIEs,与aMCI Aβ+状态显著相关,该状态由血Aβ42/40比率决定.
- 这些发现凸显了SIEs作为突出的认知标志物的潜力,这些标志与血液生物标志物中检测到的潜在阿尔茨海默病病理相关.
关键词:
阿尔茨海默氏症是阿尔茨海默氏症的一种疾病.Aβ42/4040 这种情况是什么?在LASSI-L的过程中,粉样蛋白-β-β 的存在.轻度的认知障碍 轻度的认知障碍血生物标志物 血生物标志物语义入侵错误是一个错误.更多相关视频
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