血素对抗抗卡巴因耐药的大肠杆菌的活性:简要报告
Priti Kambli1, Shaoli Basu1, Susan Rodrigues1
1Department of Laboratory Medicine (Microbiology), P. D. Hinduja National Hospital and Medical Research Centre, Mumbai, India.
Indian journal of medical microbiology
|February 14, 2026
概括
血素有效地治疗了具有常见抗药基因的耐卡巴因耐药大肠杆菌 (CR-E. coli). 然而,新兴的16S rRNA甲基转移酶 (RMTs) 显著降低了 плазмоцицин.
科学领域:
- * 传染病 传染病
- * 微生物学 微生物学
- *抗微生物耐药性 *抗微生物耐药性
背景情况:
- *耐卡巴尼姆的大肠杆菌 (CR-E. coli) 在全球范围内存在重大治疗挑战.
- *新型耐药机制的出现需要不断评估抗生素的疗效.
- *氨基糖化物修饰酶 (AME) 和16S rRNA甲基转移酶 (RMT) 是产生耐药性的关键机制.
研究的目的:
- * 评估血素对孟买CR-E. coli分离物的体外活性.
- * 调查特定耐药基因 (包括卡巴酶,AME和RMT) 对等离子素敏感性的影响.
主要方法:
- *使用最小抑制度 (MIC) 确定52个CR-E. coli分离物的敏感性测试.
- *耐药基因的表征包括NDM,OXA-48类卡巴酶,AME和RMT (例如rmtB1,rmtC,rmtF1).
主要成果:
- * 血素对含有NDM或OXA-48类卡巴酶的大肠杆菌具有强烈活性 (MICs 0.19-2 mg/L),有或没有AME.
- *表达16S rRNA甲基转移酶 (RMTs) 的分离体对血素表现出高水平的耐药性 (MIC ≥256 μg/mL).
结论:
- * 血素是一种有前途的治疗选择,用于具有AME但缺乏RMT的CR-E.大肠杆菌菌株.
- * RMT介导的耐药性的出现对血素和其他氨基糖胺的临床效用构成重大威胁.
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