Lancet:鞘内注射2-羟丙基-β-环糊精缓解尼曼皮克病神经系统疾进展

2017-08-11 zhangfan MedSci原创

鞘内2羟丙基-β环糊精治疗可显著改善C1型尼曼皮克病患者神经系统症状并表现出良好的安全性,大规模的临床对照研究即将开展

C1型尼曼皮克病 (NPC1)是以渐进性神经变性为特征的溶酶体贮积症。在临床前试验中,2羟丙基-β环糊精(HPβCD) 可显著延缓小脑浦肯野细胞死亡,减缓神经系统进展。近日研究人员公布了HPβCD用于NPC1的I-II期临床结果。

研究招募存在神经系统异常的NPC1患者,患者最初接受每月50、200、300或400mg的鞘内HPβCD注射。部分耐受良好的患者逐步增加注射剂量至每月900mg或每2周注射200或400mg。研究对患者血浆以及脑脊液中的24羟基胆固醇进行检测,采用NPC神经功能缺损程度评分(NNSS)考察治疗效果。以21名患者的治疗资料作为研究对照。

研究招募了32名NPC1患者,最终14人参与了研究,其中50mg组3人,200mg组3人,300mg组3人,400mg组3人,900mg组2人。所有参与者均完成了治疗12个月的效果评价,1名参与者在治疗的第17个月因肝癌终止研究,共11人完成了18个月的药物治疗。3名患者在2013-14年级进行了治疗效果评估,生物标志物结果与胆固醇代谢改善一致,并且神经病理得到缓解。用药后(900或1200mg)血浆24羟基胆固醇的AUC浓度显著高于对照组,在给予600mg或900mg的药物后,脑脊液24羟基胆固醇的浓度提高2倍。未发生严重的不良事件,所有参与者均发生中高频听力损伤。治疗后NNSS评分,每年增长1.22分,对照组患者年分数增长2.92分,患者行动、认知以及语言能力得到改善。

研究认为,鞘内2羟丙基-β环糊精治疗可显著改善C1型尼曼皮克病患者神经系统症状并表现出良好的安全性,大规模的临床对照研究即将开展。

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