阿普拉素在体外对Mycobacterium结核病具有很高的活性
Qing Sun1, Jun Yan2, Sibo Long2
1National Clinical Laboratory on Tuberculosis, Beijing Tuberculosis and Thoracic Tumor Institute, Beijing Chest Hospital, Capital Medical University, Beijing, PR China.
Journal of medical microbiology
|July 8, 2024
概括
阿普拉素在实验室中显示出强烈的抗 Mycobacterium 结核病 (Mtb) 菌株的活性,包括耐药结核病 (DR-TB). 这表明阿普拉素可能是对耐药结核病感染的潜在治疗方法.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 药理学 药理学是指药理学的学科.
背景情况:
- 像阿米卡辛和卡纳米辛这样的氨基糖化物对于治疗Mycobacterium结核病 (Mtb) 至关重要.
- 临床Mtb菌株中氨基糖化物耐药性的增加需要探索替代抗生素.
- 在兽医中使用的氨基糖化物apramycin是潜在的候选药物.
研究的目的:
- 评估阿普拉素对Mtb的体外疗效.
- 为了确定阿普拉米辛与Mtb.的流行病学切断值 (ECOFF),
- 评估阿普拉素对各种耐药结核病 (DR-TB) 菌株的活性.
主要方法:
- 最低抑制度 (MIC) 测定在100Mtb的分离物 (17种泛敏感,83种DR-TB) 上进行.
- 确定MIC50和MIC90值以评估阿普拉米辛的抑制度.
- 基因分析发现了与阿普拉素耐药性相关的突变,特别是在rrs基因中.
主要成果:
- 阿普拉素在体外表现出对Mtb的显著活性,MIC50为0.5μg/mL,MIC90为1μg/mL.
- 对于阿普拉米辛,已确定了一个初步的ECOFF值为1μg/mL.
- 抗药性结核病菌株之间的耐药性率有所不同:MDR-TB (12.12%),XDR-TB前 (20.69%) 和XDR-TB (66.67%).
- rrs基因A1401G突变与阿普拉米辛耐药性和与其他氨基糖化物交叉耐药性有关.
结论:
- 阿普拉素在体外对Mtb临床隔离物,特别是MDR-TB菌株表现出强烈的活性.
- 这些发现支持进一步调查阿普拉素在治疗耐药结核病的体内疗效.
- 阿普拉素代表了对多药耐药结核病的有前途的治疗选择.
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