NEJM:普瑞巴林不能改善急性和慢性坐骨神经痛

2017-03-23 MedSci MedSci原创

普瑞巴林在神经病理性疼痛的有效治疗某些类型,但最新的临床结果表明,普瑞巴林对于坐骨神经痛未表现出显著治疗效果

研究人员开展了一项随机,双盲,安慰剂对照试验用普瑞巴林治疗坐骨神经痛。患者被随机分配到安慰剂组或者治疗组,治疗组最开始每天接受150毫克的普瑞巴林并逐渐调整到调整每天600毫克,治疗过程持续8周。主要终点是在第8周的腿部疼痛程度评分(0表示无疼痛和10最严重的疼痛),在第52周腿部疼痛程度评分作为第二个主要临床终点评价时间点;次要终点包括残疾程度,背部疼痛强度,和预定终点之后1年生活质量监测。

209例病人随机分组,其中108接受普瑞巴林和101接受安慰剂。在治疗8周后,普瑞巴林组未经调整的平均腿部疼痛强度评分为3.7而安慰剂组为3.1(校正后的平均差,0.5;95%可信区间[CI],-0.2到1.2;P = 0.19)。在52周,普瑞巴林组未经调整的平均腿疼痛强度评分为3.4而安慰剂组为3.0(校正后的平均差,0.3;95%可信区间[CI],-0.5到1.0;P = 0.46);第二个主要终点两组也没有显著的差异。普瑞巴林组一共报告了227例不良事件而安慰剂组为124例,眩晕为主要的不良事件。

结果表明普瑞巴林治疗并未显着降低腿部疼痛与坐骨神经痛的程度;与安慰剂组相比,在8周的持续治疗过程中,普瑞巴林组不良事件的发生率明显高于安慰剂组。

关于普瑞巴林Lyrica(乐瑞卡),为γ-氨基丁酸受体拮抗剂,曾被《时代》周刊评为"2007十大医学进步之一"。目前该药已在数十个国家和地区上市,是名副其实的重磅炸弹级药物,普瑞巴林2016年全球销量为49.66亿美元,较2015年上涨2.6%。普瑞巴林与中枢神经系统中电压门控钙通道辅助性亚单位(α2-δ蛋白)结合,具有抗癫痫、止痛和抗焦虑作用。FDA和欧盟于2004年批准辉瑞公司的普瑞巴林胶囊上市,目前FDA和欧盟均批准的适应症为糖尿病性周围神经病变有关的神经痛,疱疹后神经痛和辅助治疗成人部分性癫痫发作。此外,欧盟于2006年3月还批准用于治疗广泛性焦虑障碍,2006年9月批准治疗成人中枢神经痛(包括脊髓损伤、卒中和多发硬化伴随的神经痛);2007年在美国获得批准用于治疗纤维肌痛。

原文出处:
Stephanie Mathieson, M.Chiro., Christopher G. et al. Trial of Pregabalin for Acute and Chronic Sciatica N Engl J Med 2017; 376:1111-1120March 23, 2017DOI: 10.1056/NEJMoa1614292.

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    2017-04-01 baihao215

    看似合理未必就是好的

    0

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