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嗅觉杏仁体的收缩意味着帕金森病患者的认知障碍
Ulaş Ay1,2,3, Zerrin Yıldırım1,2,4, Emel Erdogdu2,5
1Department of Neuroscience, Aziz Sancar Institute of Experimental Medicine, Istanbul University, 34093 Istanbul, Turkey.
Cognitive neurodynamics
|October 3, 2023
概括
帕金森病 (PD) 早期涉及杏仁体. 在特定的杏仁体分区,如皮质-杏仁体过渡区域 (CAT) 和表面皮质类区域 (sCLR) 中,体积减少与PD患者的认知能力下降有关.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 神经解剖学是一个神经解剖学.
背景情况:
- 在帕金森病 (PD) 中的Lewy病理进展涉及杏仁体的早期.
- 杏仁体细分的体积变化不太清楚,尽管嗅觉杏仁体也参与其中.
- 认知障碍是PD的重要连续性.
研究的目的:
- 在PD认知障碍谱中调查杏仁核和部门细分的体积差异.
- 为了在认知正常的PD患者,轻度认知障碍,痴呆症患者和健康对照者之间比较这些体积.
- 探索杏仁体体积和PD中的嗅觉功能之间的关系.
主要方法:
- 使用FreeSurfer分析的T1加权的MRI图像用于杏仁核分片 (NP).
- 估计了9个杏仁核体积,并将其合并为3个部门进行部门分片 (SP).
- 帕金森病 (PD-CN,PD-MCI,PD-D) 和健康对照 (HC) 组之间的体积比较,以及缺血性和正常性PD患者之间的体积比较.
主要成果:
- 在四组中观察到总杏仁体体积的显著差异.
- 与正常认知 (PD-CN) 和HC的PD相比,在轻度认知障碍 (PD-MCI) 和痴呆症 (PD-D) 的PD中发现了减少的双边皮质-桃体过渡区域 (CAT) 和表面皮质状区域 (sCLR) 卷.
- 左侧CAT和左侧sCLR卷精确地分类了认知障碍PD (PD-CI) 的高精度 (90.7%NP,85.2%SP).
- 左嗅觉杏仁体积差异化认知障碍在PD.
结论:
- 特定的杏仁体细分,特别是左侧的CAT和sCLR,显示与帕金森病的认知障碍相关的显著体积减少.
- 这些体积变化,特别是在嗅觉杏仁体中,可以作为神经成像生物标志物来诊断PD的认知障碍.
- 研究结果强调了杏仁体结构变化的作用在PD认知衰退的病理生理学中.
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