在孤立的快速眼动睡眠行为障碍中,胆功能障碍与即将发生的表态转换有关
Miriam H Terkelsen1,2, Alex Iranzo3,4,5, Mónica Serradell3,5
1Department of Nuclear Medicine and PET, Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark.
患有孤立的快速眼动睡眠行为障碍 (iRBD) 的患者,表现出表皮皮层11C-donepezil吸收减少的患者,面临更高的风险转化为synucleinopathies. 多巴胺功能障碍也预测了疾病的进展.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 睡眠医学 睡眠医学
背景情况:
- 大多数患有孤立的快速眼动睡眠行为障碍 (iRBD) 的患者最终会发展出帕金森症的α-synucleinopathies.
- 在iRBD患者中,表转化率有显著差异.
研究的目的:
- 为了确定iRBD患者的胆固醇和多巴胺功能障碍是否预测了表转化.
- 研究神经化学缺陷与突核蛋白病变的进展之间的关联.
主要方法:
- 在21名iRBD患者中使用了用11C-多尼佩西尔 (胆固醇) 和18F-DOPA (多巴胺) 的正子发射断层扫描 (PET).
- 监测患者长达8年,以检测他们是否转变为帕金森病或勒维体痴呆症.
- 使用线性回归和考克斯回归分析PET数据,比较低和高标志物吸收组.
主要成果:
- 在17名随访患者中,有8名患者进展到同核蛋白病变.
- 与非转换剂相比,转换剂在皮质区域 (,额头) 和丘脑中显示出明显较低的11C-多内佩西尔吸收.
- 在所有转换器中观察到骨中较低的18F-DOPA吸收.
- 较低的体11C-多尼佩西尔吸收增加了13.46倍的转化率 (p=0.023).
结论:
- 皮质胆固醇功能障碍,特别是在头皮质皮质,可以作为预测iRBD短期变异的生物标志物.
- 这些发现支持先前的研究,该研究将多巴胺基功能障碍与iRBD即将发生的转化联系起来.
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