临床表现 临床表现
Julia A Sinople1, Em Teixeira1, Charles Denby1
1Rhode Island Hospital, Providence, RI, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 26, 2025
概括
新的数字认知测试在早期检测阿尔茨海默病 (AD) 风险方面表现有前途. 这些工具,包括罗德岛移动认知评估工具 (RIMCAT),对认知不受损的老年人粉样蛋白水平敏感.
科学领域:
- 神经科学是一个神经科学.
- 老年学是指老年学的学科.
- 生物标志物研究 生物标志物研究
背景情况:
- 数字认知查为早期阿尔茨海默病和相关痴呆症 (ADRD) 检测提供了潜在的潜力.
- 目前的数字工具对临床前ADRD阶段缺乏敏感性.
- 罗德岛移动认知评估工具 (RIMCAT) 在区分受损和无损个体方面表现出很高的准确性.
研究的目的:
- 提高RIMCAT对早期/临床前AD风险检测的敏感性.
- 研究四种新的认知范式,针对早期AD受影响的大脑区域.
- 评估数字认知评估与无认知障碍的老年人血氨基酸β 42/40 (Ab42/40) 水平之间的关系.
主要方法:
- 招募了24名没有认知障碍的老年人 (平均年龄73岁).
- 使用PrecivityAD平台对粉样蛋白概率评分 (APS) 分析了血样本.
- 管理RIMCAT和四个新的计算机化子测试 (感知歧视,熟悉性记忆,特征结合,反应抑制).
主要成果:
- 粉样蛋白负担较高的个体在RIMCAT和三个新子测试中表现更差 (p < .05).
- 较高的Ab42/40比率 (较少的粉样蛋白) 与RIMCAT和所有新子测试的更好的表现相关 (r = .23-.40).
结论:
- 新的数字认知查措施表明,在认知不受损的个体中,对粉样蛋白负担的初步敏感性.
- 这些发现表明,在早期AD检测中,数字工具的潜力很大.
- 需要使用更大的样本和额外的生物标志物 (例如tau) 进行进一步的验证.
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