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多参数磁共振成像和血氨基酸β蛋白在主观认知衰退中的变化
Qiaoqiao Xu1,2, Jiajia Yang1, Fang Cheng2
1Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, China.
Brain sciences
|December 23, 2023
概括
主观认知衰退 (SCD) 患者表现出更高的血氨基酸β (Aβ) 水平和明显的脑成像模式. 这些变化,包括大脑体积的减少和网络效率的改变,与认知得分相关,表明早期的阿尔茨海默氏症变化.
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
- 神经成像是一种神经成像.
背景情况:
- 血氨基酸β (Aβ) 与主观认知衰退 (SCD) 之间的联系仍在争论中.
- SCD可能代表神经退行性疾病的早期阶段,如阿尔茨海默氏症.
研究的目的:
- 为了研究血Aβ水平,神经成像标记物和SCD患者的认知功能之间的关系.
- 在患有SCD的个体中识别阿尔茨海默病的潜在早期生物标志物.
主要方法:
- 利用磁共振成像 (MRI) 进行基于voxel的形态测量和皮质功能网络分析.
- 测量了血Aβ42和Aβ40水平.
- 使用蒙特利尔认知评估 (MoCA) 评估了53名SCD患者和46名健康对照者的认知功能.
主要成果:
- 与HC患者相比,SCD患者的血Aβ42水平较高,MoCA得分较低.
- 在SCD患者中观察到大脑体积减少 (左海马,右直肠,右前中心) 和网络效率改变 (PerAF增加,aSigma降低,aEg降低).
- 在大脑体积,血Aβ水平和MoCA得分之间发现了显著的相关性,左海马体积和Aβ42之间存在负相关性,右直肠回环体积和Aβ42/40.
结论:
- SCD患者表现出类似于阿尔茨海默病的血Aβ变化和多参数MRI变化.
- 这些发现支持了血Aβ和先进的MRI技术作为SCD干预早期指标的潜力.
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