帕金森病患者非运动症状疗法

2012-04-10 陈蓉 EurekAlert

       一项新的研究报告显示,提高脑中的多巴胺水平可能不足以解决帕金森氏症患者中的非运动性症状,例如抑郁症和疲劳。除了严重的运动损害这一帕金森氏病的标志之外,该病还会引起显著影响生活品质的非运动性症状,诸如抑郁症、疲劳、视幻觉和睡眠问题[Sci Transl Med 4 April 2012: Vol. 4, Issue 128, p. 128ra41

       一项新的研究报告显示,提高脑中的多巴胺水平可能不足以解决帕金森氏症患者中的非运动性症状,例如抑郁症和疲劳。除了严重的运动损害这一帕金森氏病的标志之外,该病还会引起显著影响生活品质的非运动性症状,诸如抑郁症、疲劳、视幻觉和睡眠问题[Sci Transl Med 4 April 2012: Vol. 4, Issue 128, p. 128ra41]。
       Marios Politis及其同事们在此采集了在13-16年前移植了富含多巴胺的胚胎移植物的3名帕金森氏病患者的成像数据。这些人感受到了主要的运动技能的恢复并甚至停用左旋多巴达数年。不幸的是,即便他们的运动症状减少了,这些患者仍然得与抑郁症、疲劳和其它非运动性症状作斗争。
       研究人员对患者脑中的多巴胺神经元用放射性示踪剂进行了标记,并用一种叫做正电子发射断层扫描的成像技术显示,胚胎移植物恢复了多巴胺神经元的功能,从而带来患者运动技能的改善。然而,其它的用一种与产生5-羟色胺的神经元结合的显像剂所进行的脑扫描显示,在与调节睡眠、唤醒、食欲、情绪和情感有关的脑部区域中的5-羟色胺神经元数目低于正常。
       这些发现表明,多巴胺神经元替代疗法应该与其它的促进5-羟色胺的疗法相结合从而为患者提供针对帕金森氏病的更为完全的、长期的缓解。
 

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