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在台湾从肺部感染中分离出来的Mycobacterium avium复杂物种中的异质性
Hsiu-Mei Lin1, Chin-Chung Shu2, Chun-Hao Chen3
1Department of Family Medicine, Linkou Chang Gung Memorial Hospital, Taoyuan, Taiwan.
Microbiology spectrum
|July 7, 2025
概括
区分Mycobacterium avium复合体 (MAC) 种类对于有效治疗肺部感染至关重要. 这项研究在台湾的MAC物种中发现了不同的抗微生物敏感性,强调个性化治疗而不是通用指南.
科学领域:
- 临床微生物学和传染病.
- 抗微生物耐药性和敏感性测试
- 细菌病原体的分子鉴定
背景情况:
- 在全球范围内,Mycobacterium avium复合体 (MAC) 导致新出现的非结核性肺部感染.
- 目前的临床指导方针将MAC视为单个实体,建议统一的组合疗法.
- 对于量身定制的抗微生物战略,有必要区分MAC物种.
研究的目的:
- 在台湾区分Mycobacterium avium复合体 (MAC) 内的物种.
- 调查已识别的MAC物种的抗微生物敏感性概况.
- 根据物种和区域数据,为MAC肺部感染提供最佳抗菌剂选择的信息.
主要方法:
- 使用矩阵辅助激光脱/离子化飞行时间质谱法 (MALDI-TOF MS) 进行初始MAC确认.
- 多基因测序 (16S rRNA,23S rRNA,hsp65,ITS,rpoB) 和遗传学分析用于精确的物种识别.
- 对294个MAC分离物进行了抗微生物敏感性测试 (AST),对抗13种抗微生物药物.
主要成果:
- 确定的主要MAC物种是Mycobacterium细胞内菌类A (41.5%),M.细胞内菌亚种. 喜梅拉 (29.6%),M. 细胞内亚种. 细胞内 (13.3%) 和M. avium (11.9%) 的情况.
- 克拉里思罗米辛和阿米卡辛在大多数已识别的MAC物种中显示出高敏感率.
- 利尼佐利德和莫西弗洛克萨的抗药率较高;M. avium的抗药性较高,而且各个物种的敏感性各不相同.
结论:
- 在台湾,对肺部感染进行有效治疗,对MAC的物种级别鉴定至关重要.
- 区域AST数据和特定物种的敏感性模式应指导抗微生物选择,超出普遍治疗准则.
- 建议针对特定的MAC物种量身定制的个性化抗菌疗法,以改善患者的治疗结果.
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