Heart:烟酸他汀联合疗法不优于他汀单一疗法

2013-09-30 coffeecoffee DXY

研究要点: 他汀治疗可降低患者LDL胆固醇水平,但不能完全消除残余心血管风险。 烟酸可升高HDL胆固醇水平,因此,Christopher Sibley等人研究了烟酸他汀联合疗法是否能减少残余风险。 结果发现,烟酸他汀联合疗法在动脉粥样硬化斑块消退方面不优于他汀单一疗法。 他汀治疗通过降低LDL胆固醇水平降低心血管风险,但即使是最优化他汀疗法仍不能消除残余风险。目前,临床上可在他汀治疗的基础

研究要点:

1.他汀治疗可降低患者LDL胆固醇水平,但不能完全消除残余心血管风险。

2.烟酸可升高HDL胆固醇水平,因此,Christopher Sibley等人研究了烟酸他汀联合疗法是否能减少残余风险。

3.结果发现,烟酸他汀联合疗法在动脉粥样硬化斑块消退方面不优于他汀单一疗法。

他汀治疗通过降低LDL胆固醇水平降低心血管风险,但即使是最优化他汀疗法仍不能消除残余风险。目前,临床上可在他汀治疗的基础上加用烟酸,以期通过升高HDL胆固醇降低残余心血管风险。然而,Christopher Sibley及其同事在Heart杂志上发表文章称,在最优他汀疗法基础上加用烟酸并未显著加速动脉粥样硬化斑块的消退。该研究结果显示,加用烟酸治疗与否对于斑块消退没有影响,而AIM-HIGH试验也发现联合降脂疗法(包括烟酸)不能减少心血管事件。”【原文下载

Sibley等人招募了145名65周岁以上的受试者,所有受试者均有心血管病史或动脉粥样硬化征兆(血管造影或非侵入性影像显示超过50%狭窄),通过他汀治疗(主要是阿托伐他汀)达到国家胆固醇教育计划指南规定的LDL胆固醇目标水平。此外,患者还经随机分配分别接受缓释烟酸(12周达到靶剂量1,500mg/日)或安慰剂。

研究开始时,两组间基线LDL和HDL水平无显著差异。随访18个月后共计117名患者完成试验,与他汀治疗组相比,“烟酸+他汀”治疗组HDL胆固醇水平相对增加了17%,LDL胆固醇水平减少10%,没有显著性。研究6、12和18个月时磁共振成像发现,两组间颈内动脉壁体积减小没有显著差异,他汀治疗组每月减小0.5%,而“他汀+烟酸”治疗组每月减小0.7%。

研究人员由此得出结论,烟酸联合他汀疗法并不优于他汀单一疗法,两种疗法对斑块消退的影响相近,而患者只服用他汀就可以达到推荐的LDL胆固醇水平。

原文下载

Sibley CT, Vavere AL, Gottlieb I, Cox C, Matheson M, Spooner A, Godoy G, Fernandes V, Wasserman BA, Bluemke DA, Lima JA.MRI-measured regression of carotid atherosclerosis induced by statins with and without niacin in a randomised controlled trial: the NIA plaque study.Heart. 2013 Jul 19.

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    2013-10-02 zhaojie88
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    2013-10-02 slcumt