结核下丘脑的微观结构变化与Lewy体疾病中的白天嗜睡有关
Jesse S Cohen1,2, Hamsanandini Radhakrishnan1, Christopher A Olm1
1Department of Neurology, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
概括
在勒维体疾病中,过度的白天嗜睡与下丘脑的变化有关. 扩散MRI显示了结核下丘脑中平均扩散率的增加,这表明受损的完整性有助于嗜睡.
科学领域:
- 神经成像是一种神经成像.
- 神经学 神经学
- 睡眠医学 睡眠医学
背景情况:
- 过度的白天嗜睡 (EDS) 是莱维体疾病 (LBD) 的重要症状.
- 下丘脑,一个关键的睡眠-清醒调节器,与LBD病理有关,但其在EDS中的作用尚未完全理解.
研究的目的:
- 在LBD患者中使用扩散权重核磁共振来研究下丘脑微观结构.
- 探索下丘脑变化与LBD中的EDS症状之间的关系.
主要方法:
- 102名LBD患者 (帕金森病,PD痴呆症,勒维体痴呆症) 接受了MRI.
- 扩散MRI测量了在下丘脑亚区域的平均扩散度 (MD).
- 在患有 (ESS ≥10) 和没有 (ESS <10) EDS的患者之间进行了MD的比较,并控制了共变量.
主要成果:
- 与EDS-患者相比,EDS+患者的整体,上层结核和下层结核下丘脑中观察到MD的增加.
- 这些结核区域的MD与爱普沃思睡眠度量表 (ESS) 评分有显著的相关性.
- 在下丘脑MD或体积与认知,运动或其他临床症状之间没有发现显著的相关性.
结论:
- 结核下丘脑的完整性受损与LBD中的EDS有关.
- 这些发现表明,下丘脑的变化有助于LBD患者的白天嗜睡.
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