Lancet:肺气肿后严重的α1抗胰蛋白酶缺乏患者应考虑强化治疗

2015-05-28 MedSci MedSci原创

背景:α1蛋白酶抑制剂(A1PI)强化治疗α1抗胰蛋白酶缺乏症的疗效尚未通过随机、安慰剂对照试验得到证实。和肺活量测定相比,CT-测量在α1抗胰蛋白酶缺乏肺气肿疾病进展的肺密度时灵敏度更大,因此,该研究的目的是应用此措施评估强化治疗的功效。方法:RAPID研究是一项A1PI治疗α1抗胰蛋白酶缺乏症患者的多中心,双盲,随机,平行组,安慰剂对照试验。研究人员在13个国家28个国际研究中心招募合格的非吸

背景:α1蛋白酶抑制剂(A1PI)强化治疗α1抗胰蛋白酶缺乏症的疗效尚未通过随机、安慰剂对照试验得到证实。和肺活量测定相比,CT-测量在α1抗胰蛋白酶缺乏肺气肿疾病进展的肺密度时灵敏度更大,因此,该研究的目的是应用此措施评估强化治疗的功效。

方法:RAPID研究是一项A1PI治疗α1抗胰蛋白酶缺乏症患者的多中心,双盲,随机,平行组,安慰剂对照试验。研究人员在13个国家28个国际研究中心招募合格的非吸烟者(18岁–65年),他们有严重的α1抗胰蛋白酶缺乏症(血清浓度<11μm),1秒钟用力呼气量35–70%(预测)。研究人员排除了那些经历过,或者正在等待肺移植,肺叶切除,或肺减容手术,或有选择性IgA缺乏的患者。使用计算机化伪随机数发生器(四个块大小)与中心分层随机分配患者(1:1,由Accovion完成)每周接收A1PI静脉60毫克/千克或安慰剂,持续24个月。整个研究过程中所有患者和研究者(包括评估的结果)都不知道治疗分配。初级终点在0,3,12,21,和24个月时肺总容量(TLC)和功能残气量(FRC)组合的CT肺密度,通过改良的意向治疗分析(患者需要至少一个可评价肺密度测量)。

结果:在2006年3月1日和2010年11月3日之间,研究人员随机分配93例(52%)患者接受A1PI治疗,87例(48%)患者接受安慰剂,最终安慰剂组有85例纳入分析,A1PI组92例纳入分析。TLC和FRC联合后肺密度年损失率没有组间差异(每年A1PI -1.50g /L[SE 0.22];安慰剂每年-2.12克/L[0.24];差异为每年0.62克/L [95%Cl -0.02到1.26],p值=0.06)。然而,在TLC单独治疗时肺密度年损失率A1PI组患者(每年-1.45克/L.[SE 0.23])显著少于安慰剂组(-2·22克/L每年[0·25];差异为每年0.74克/ L[95%Cl 0.06-1.42],p=0.03),但FRC单独治疗并没有发生这种情况(A1PI每年-1.54克/升[0.24];安慰剂组每年-2.02克/升[0.26];差异为每年0.48克/L[-0.22到1.18],P=0.18)。治疗后出现的不良事件两组相似,1298在A1PI组发生92例(99%)患者在,1068在安慰剂组发生86例(99%)。71治疗严重不良事件A1PI组出现25例(27%)患者,58发生在安慰剂组27例(31%)。1种治疗后出现的不良事件,导致从A1PI组中撤出一个患者(1%),10种不良事件发生在安慰剂组4例患者身上(5%)。一例死亡发生在A1PI组(呼吸衰竭),三例发生在安慰剂组(败血症,肺炎,和转移性乳腺癌)。

结论:单独使用TLC时使用CT测量肺密度的测量提供的证据表明,纯化的A1PI强化治疗减慢了肺气肿的进展,这一发现不能由FRC单独使用时肺密度测量或由两个测量相结合得到证实。这些发现应促进了面对肺气肿严重的继发α1抗胰蛋白酶缺乏患者,应及时考虑强化治疗。

原始出处:

Prof Kenneth R Chapman, MDcorrespondenceemail, Jonathan G W Burdon, MD, Eeva Piitulainen, MD, Prof Robert A Sandhaus, MD, Niels Seersholm, MD, James M Stocks, MD, Berend C Stoel, PhD, Liping Huang, MD, Zhenling Yao, MD, Jonathan M Edelman, MD, Prof Noel G McElvaney, MD on behalf of the RAPID Trial Study Group,Intravenous augmentation treatment and lung density in severe α1 antitrypsin deficiency (RAPID),Lancet,2015.5.27

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    0

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    2015-05-28 summer474cn

    学习了!medsci真的挺好的

    0

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    2015-05-28 summer474cn

    个人感觉比医学时间捞的更干!讲的东西更实用

    0

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