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利福平-硝唑尼特联合用药,而非利福平-异烟肼-吡嗪酰胺-乙胺丁醇,可在中性 pH 缺氧条件下杀死休眠状态的结核分枝杆菌。

The Combination Rifampin-Nitazoxanide, but Not Rifampin-Isoniazid-Pyrazinamide-Ethambutol, Kills Dormant Mycobacterium tuberculosis in Hypoxia at Neutral pH.

机构信息

Dipartimento di Malattie Infettive, Istituto Superiore di Sanità, Rome, Italy.

Organismo Notificato Unificato, Istituto Superiore di Sanità, Rome, Italy.

出版信息

Antimicrob Agents Chemother. 2019 Jun 24;63(7). doi: 10.1128/AAC.00273-19. Print 2019 Jul.

Abstract

The activities of rifampin, nitazoxanide, PA-824, and sutezolid were tested against dormant under conditions mimicking caseous granulomas (hypoxia at pH 7.3) in comparison with those of the combination rifampin-isoniazid-pyrazinamide-ethambutol (R-I-Z-E), which is used for human therapy. Mycobacterial viability was monitored by CFU and regrowth in MGIT 960. As shown by lack of regrowth in MGIT, rifampin-nitazoxanide-containing combinations, but not R-I-Z-E, killed dormant cells in 28 to 35 days. These observations might be important in designing new tuberculosis therapies.

摘要

利福平、硝唑尼特、PA-824 和苏替唑利的活性在模拟干酪样肉芽肿(低氧 pH7.3)的条件下进行了测试,并与用于人类治疗的利福平-异烟肼-吡嗪酰胺-乙胺丁醇(R-I-Z-E)组合进行了比较。通过 CFU 和 MGIT960 中的再生长监测分枝杆菌的活力。如 MGIT 中无再生长所示,含有利福平-硝唑尼特的组合,而不是 R-I-Z-E,可在 28 至 35 天内杀死休眠细胞。这些观察结果在设计新的结核病治疗方法方面可能很重要。

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