黑色质子区域中的微观结构模式与帕金森病的抑郁和嗅觉障碍有关
Mehrdad Mozafar1, Zobeydeh Dehghan Manshadi2, Zohreh Molaei3
1School of Medicine, Tehran University of Medical Sciences, Tehran, Iran; Division of Vascular and Endovascular Surgery, Department of Surgery, Shohada-Tajrish Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Clinical neurology and neurosurgery
|March 13, 2025
概括
扩散张力成像 (DTI) 揭示了与帕金森病 (PD) 患者的抑郁和嗅觉功能障碍相关的黑色物质 (SN) 的大脑微结构差异,即使这些患者没有明显的多巴胺缺陷.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 大脑解剖学 大脑解剖学
背景情况:
- 帕金森病 (PD) 呈现出运动和非运动症状,通常是运动缺陷之前的非运动症状.
- 抑郁症和嗅觉功能障碍等非运动症状与特定黑色物质 (SN) 亚区域之间的关系不太清楚.
- 扩散张力成像 (DTI) 提供了一种研究大脑微观结构模式的方法.
研究的目的:
- 调查SN亚区域微结构模式与PD患者的运动/非运动症状之间的关联.
- 为了比较这些协会在PD患者和没有明显的多巴胺缺乏与健康对照 (HC).
- 探索DTI在检测PD微结构变化的实用性,包括那些没有多巴胺缺陷 (SWEDD) 证据的扫描.
主要方法:
- 利用了来自帕金森氏症进展标记计划 (PPMI) 数据库的DTI数据.
- 包括260名参与者,156名PD,36名SWEDD和68名HC.
- 采用多重线性回归模型来分析症状得分和DTI发现之间的关联.
主要成果:
- 抑郁症在各组之间有显著的差异,SWEDD患者的患病率最高 (约1. 36.1%) 的情况.
- 与非抑郁的SWEDD患者相比,抑郁的SWEDD患者在右面SN中表现出更高的分数异质性 (FA).
- 与SWEDD和HC组相比,PD患者嗅觉功能障碍的患病率更高 (54.5%的低,34%的无).
结论:
- 大脑SN的微观结构差异与PD患者的抑郁和嗅觉功能障碍有关,无论多巴胺基缺乏症.
- DTI对于检测SN中微妙的微观结构变化非常有价值,特别是在患有SWEDD的患者中.
- 这些发现增强了对帕金森病非运动症状病理学的理解.
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