Lancet:新药AMG145有助降低LDL胆固醇水平

2012-11-12 Lancet Lancet

  对于许多胆固醇高的人来说,他汀类药物(statins serve) 往往是治疗的第一选择。然而,一些患者在使用此类药物时无法有效地降低低密度脂蛋白胆固醇(LDL cholesterol),或称为“坏胆固醇”的浓度,因为他们的身体无法对这些药物做出足够的反应。   来自Brigham and Women's Hospital 的研究人员近期研发了一种新型药物:AMG145,如果病患在使用他汀类

  对于许多胆固醇高的人来说,他汀类药物(statins serve) 往往是治疗的第一选择。然而,一些患者在使用此类药物时无法有效地降低低密度脂蛋白胆固醇(LDL cholesterol),或称为“坏胆固醇”的浓度,因为他们的身体无法对这些药物做出足够的反应。

  来自Brigham and Women's Hospital 的研究人员近期研发了一种新型药物:AMG145,如果病患在使用他汀类药物的同时加入这种药物,能在12周后有效降低LDL胆固醇水平66%。这一研究结果在今年的美国心脏协会年会上公布,并发表于11月6日Lancet杂志。

  研究人员在一项双盲,广剂量范围,并带有安慰剂对照的试验中,分析了631位年龄介于18岁到80岁之间的患者,他们胆固醇高并稳定使用一定剂量的他汀类药物(或有或无 ezetimibe),研究人员将患者随机分成两组,一组接受六种不同AMG145剂量的治疗,另外一组则使用安慰剂,之后每两个星期或每四个星期进行皮下注射,共十二周分析药效。

  对于每两周接受一次AMG145治疗的患者,研究人员发现到这十二周结束的时候,相比于安慰剂组,这种药物能以剂量依赖方式降低42%至66%的LDL胆固醇。

  而每四周接受一次AMG145治疗的患者,则相比于安慰剂组,LDL胆固醇降低了42%至50%。而且,在短短的一个星期的药物治疗后,研究人员就发现了高达85%的LDL胆固醇降低。

  “我们观察到的LDL胆固醇水平降低疗效非常引人注目,尤其是那些进行他汀类药物治疗的患者,”文中的第一作者,BWH心血管科 Robert Giugliano说。

  每两周注射一次最高剂量的患者也出现了93.5%的最高降低水平,此外研究人员也指出在利用AMG145治疗的患者没有出现严重不良反应。

  “这些数据令人兴奋,为降低LDL胆固醇提出了一种新的范例,下一步将是进行大规模的,长期的心血管检测试验,”文章的通讯作者,TIMI研究组主任Marc Sabatine说。

  AMG145是一种单克隆抗体,它能结合到一种促进LDL胆固醇受体被降解的蛋白上,通过阻断这种蛋白的作用,AMG145保护受体免遭降解,从而增加了肝脏表面上的LDL胆固醇受体数量,帮助血液中LDL胆固醇的代谢。

  这项研究由Amgen公司资助,Amgen公司相关研究人员也参与了研究设计和数据收集。数据分析和解释是由BWH研究组成员单独进行。

   链接:Dr Robert P Giugliano MD a , Nihar R Desai MD a, Payal Kohli MD a, Prof William J Rogers MD b, Ransi Somaratne MD c, Fannie Huang MS c, Thomas Liu PhD c, Satishkumar Mohanavelu MS a, Elaine B Hoffman PhD a, Shannon T McDonald BSN a, Timothy E Abrahamsen BA a, Scott M Wasserman MD c, Robert Scott MD c, Marc S Sabatine MD a.Efficacy, safety, and tolerability of a monoclonal antibody to proprotein convertase subtilisin/kexin type 9 in combination with a statin in patients with hypercholesterolaemia (LAPLACE-TIMI 57): a randomised, placebo-controlled, dose-ranging, phase 2 stu.The Lancet,6 November 2012


 

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    2013-03-17 howi
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    2012-11-14 zhwj
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    2012-11-14 zhouqu_8