在患有帕金森病,有REM睡眠行为障碍的患者中,谷氨酸信号
Christopher E J Doppler1, Aline Seger1, Ezequiel Farrher1
1From the Cognitive Neuroscience (C.E.J.D., A.S., L.H., G.R.F., M.S.), Institute of Neuroscience and Medicine (INM-3), Forschungszentrum Jülich; Department of Neurology (C.E.J.D., A.S., L.H., G.R.F., M.S.), Faculty of Medicine and University Hospital Cologne, University of Cologne, Köln; Institute of Neuroscience and Medicine (INM-4) (E.F., C.R.B., A.G., N.J.S., C.W.L., K.-J.L.), Forschungszentrum Jülich; Department of Nuclear Medicine (C.P.F., K.-J.L.), RWTH University Hospital, Aachen; Institute of Medical Statistics and Computational Biology (M.H.), Faculty of Medicine and University Hospital of Cologne, University of Cologne; Faculty of Medicine (A.G.), RWTH Aachen University, Germany; Engineering Physics Department (A.G.), Georgian Technical University, Tbilisi, Georgia; Institute of Neuroscience and Medicine (INM-11) (N.J.S.), Molecular Neuroscience and Neuroimaging, JARA, Forschungszentrum Jülich; JARA-BRAIN-Translational Medicine (N.J.S.), Aachen; Department of Neurology (N.J.S.), RWTH Aachen University; and Institute of Neuroscience and Medicine (INM-5) (B.N.), Forschungszentrum Jülich, Germany.
患有REM睡眠行为障碍 (RBD) 的帕金森病 (PD) 患者表现出改变的谷氨酸信号传递,由更高的[11C]ABP688吸收证明. 这表明一种新的机制有助于PD异质性和更快的疾病进展.
科学领域:
- 神经科学是一个神经科学.
- 神经学 神经学
- 放射化学 放射化学是指辐射化学.
背景情况:
- 帕金森病 (PD) 呈现出显著的临床异质性.
- 带有REM睡眠行为障碍 (RBD) 的PD代表了一个更严重的表型,具有加速的运动进展和增加的非运动症状.
- 底层的神经机制,特别是神经递质系统失衡,仍然不清楚.
研究的目的:
- 在患有或没有RBD的PD患者中调查谷氨酸信号传递机制.
- 探索谷氨基基信号传递,RBD状态和PD临床进展之间的关系.
主要方法:
- 在混合PET/MR系统上同时使用磁共振 (MR) 光谱和[11C]ABP688位子发射断层扫描 (PET).
- 患有PD的患者根据RBD状态被分类,该状态是通过多睡眠学确定的.
- 量化[11C]ABP688总分布体积 (VT) 和基底腺谷氨酸,谷氨酸和谷氨水平.
主要成果:
- 在患有RBD的PD患者中,与没有RBD和健康对照患者相比,观察到[11C]ABP688的全球升高VT.
- 谷氨酸代谢物在不同组之间没有差异,也与[11C]ABP688 VT没有相关.
- 在PD患者中,增加的[11C]ABP688 VT与REM睡眠无无和多巴胺治疗反应相关.
结论:
- 患有RBD的PD患者表现出改变的谷氨酸信号传递,以增加的[11C]ABP688 VT表示,尽管谷氨酸水平正常.
- 这表明谷氨酸受体的不平衡,导致PD异质性.
- 需要对向甲基酸盐受体5 (mGluR5) 的药物进行进一步的研究.
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