SCI TRANSL MED:帕金森病患者的福音-吸入型左旋多巴

2016-10-20 xing.T MedSci原创

这些结果支持进一步发展CVT-301,以期更好地用于PD的治疗。

吸入药物有许多优点,其中之一就是起效快速,但这需要很好的配方和输送系统以便于重复和方便给药。CVT-301是一种由呼吸驱动吸入器递送的左旋多巴粉末配方,已被开发用于治疗帕金森病(PD)患者症状发作(在更换口服左旋多巴标准剂量时运动症状波动)。

目前,CVT-301的1期和2期临床前实验已经完成。犬吸入左旋多巴粉末后,所有实验动物犬在用药2.5分钟后血浆左旋多巴达到高峰;相反,犬口服左旋多巴联合卡比多巴后,直到用药后30分钟才在血浆中检测到左旋多巴。在18名健康人中进行试验,发现吸入CVT-301与口服卡比多巴联合左旋多巴比较存在相似的药代动力学差异。在24例PD患者中,症状发作时单次吸入CVT-301剂量为50mg,77%的患者显示用药后10分钟内血浆中左旋多巴(大于400ng/ml)的增加。而口服卡比多巴(25mg)联合左旋多巴(100mg)只有27%的患者10分钟内血浆中左旋多巴含量升高。定时手指敲击和整体运动功能(统一帕金森氏病评定量表的第三部分)最早分别能够在吸入用药后5分钟和15分钟内得到改善。对于吸入用药导致患者平均和最好的变化情况,与安慰剂相比都具有显著的统计学差异。吸入CVT-301最常见的不良事件是咳嗽,但是只是在吸入药物时的轻度至中度咳嗽,并且迅速缓解,最初用药后咳嗽发作并不频繁。

这些结果支持进一步发展CVT-301,以期更好地用于PD的治疗。

原始出处:

Michael M. Lipp, et al. Preclinical and clinical assessment of inhaled levodopa for OFF episodes in Parkinson’s disease. Science Translational Medicine.2016 Oct 12;8(360):360ra136   DOI:10.1126/scitranslmed.aad8858

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    2017-08-22 bsmagic9140
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    2016-10-21 刘煜

    学习新知识。

    0

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本文原载于《中华神经科杂志》2016年第4期帕金森病(Parkinson's disease)是以静止性震颤、肌张力增高、运动迟缓等为主要临床表现的神经系统变性疾病,也伴有各种非运动症状,如睡眠障碍、嗅觉减退、认知功能障碍、自主神经功能障碍等,其中自主神经功能障碍是非运动症状的一个重要组成部分。近年来,研究发现自主神经功能障碍可出现于帕金森病运动前期,并且是帕金森病常见的临床症状,对自主神经症

JBC:帕金森病研究取得重大突破

来自澳大利亚昆士兰大学的一项新研究可能导致人们开发出治疗帕金森病的新方法,而且在未来有潜力用于治疗将近50种其他疾病。 在帕金森病---影响着全世界大约800万人---中,大脑内至关重要的神经元发生功能故障或者死亡。 在这项研究中,来自昆士兰大学分子生物科学研究所的研究人员研究了一种干扰神经元内的物质运输并且允许废弃产物堆积从而导致帕金森病的基因突变。相关研究结果发表在2016年8月26日那期

帕金森病步态障碍临床特点及研究进展

本文原载于《中华神经医学杂志》2016年第4期帕金森病(Parkinson's disease)是一种中老年人常见的神经系统退行性疾病,其病理改变主要表现为选择性中脑黑质多巴胺能神经元的进行性变性死亡,残余神经元内路易小体形成,进而引起纹状体多巴胺含量显著减少。帕金森病的临床表现主要为运动迟缓、静止性震颤、肌强直和姿势步态障碍[1]。其中步态障碍是帕金森病运动功能缺损的常见表现,更是导致帕金森

Science:科学家找到治疗帕金森病的新策略

来自约翰斯霍普金斯大学医学院的研究人员报告称他们发现了一种蛋白能让一种天然毒性物质在哺乳动物的脑细胞之间进行扩散,同时还找到了阻断该蛋白发挥作用的方法。他们在小鼠和细胞上进行的研究表明一种已经处于癌症临床试验阶段的免疫治疗药物有望延缓帕金森病的进展。 相关研究发表在国际学术期刊Science上。 在此之前德国科学家曾发表证据提出一个新的理论,帕金森病的进展伴随着α-突触核蛋白聚集体在脑细胞之间