Eur Respir J:抗结核治疗,利福平的剂量越大越好吗?

2021-02-09 Nebula MedSci原创

本研究评估了增加利福平剂量的安全性、耐受性、药代动力学以及第7天和14天时的早期杀菌活性(EBA)。

越来越多的数据表明,更大剂量的利福平更有效,还可缩短抗结核治疗的时间。本研究评估了增加利福平剂量的安全性、耐受性、药代动力学以及第7天和14天时的早期杀菌活性(EBA)。

近日发表在《欧洲呼吸杂志》“European Respiratory Journal”上的最新研究“Increased bactericidal activity but dose-limiting intolerability at 50 mg·kg rifampicin”,报告了PANACEA HIGHRIF1研究最终队列的结果,这是一项针对未治疗过的成人涂阳肺结核患者的剂量递增研究。

在连续队列中,患者每日接受一剂40或50 mg/kg 利福平治疗(第1-7天),在第8-14天期间辅以标准剂量的异烟肼、吡嗪酰胺和乙胺丁醇。

在40 mg/kg组(n=15)中,13位患者在单一治疗期间总共发生了36次不良事件(AE),导致一例治疗中断。在50 mg/kg组(n=17)中,所有患者在单一治疗期间均出现了不良反应,共93例,11位患者退出或停止研究用药。

大多AE是轻中度,可耐受,与安全性无关,有胃肠道疾病、瘙痒、高胆红素血症和黄疸。与40 mg/kg相比,利福平50 mg/kg时的几何平均AUC0-24h大幅度增加,571 mg/L·h(范围320-995) vs 387 mg/L·h(201-847),暴露峰值也呈正比增加。

利福平 50 mg/kg后的非蛋白质结合暴露水平与较低剂量利福平的相当。利福平暴露与胆红素浓度相关。EBA随剂量的增加而显著增加,以50 mg/kg用药剂量的最高:第14天时的EBA为-0.427 logCFU/ml·天。

综上所述,虽然利福平用药剂量为50 mg/kg时具有更强的杀菌效果,但其耐受性不佳。40 mg/kg时,利福平耐受性良好,因而被选为IIC期缩短治疗试验的评估剂量。

原始出处:

Te Brake Lindsey H M,de Jager Veronique,Narunsky Kim et al. Increased bactericidal activity but dose-limiting intolerability at 50?mg·kg rifampicin. Eur Respir J, 2021, 10.1183/13993003.00955-2020

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    2021-02-11 wgx309
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    2021-02-10 12464da8m54(暂无昵称)

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