在Mycobacterium abscessus亚种中异常高的克拉里素耐药性. 从人类胃上皮质中分离出来的
Deepak Chouhan1,2, R J Retnakumar1,2, T Barani Devi1
1Pathogen Biology Group, Rajiv Gandhi Centre for Biotechnology (RGCB), Thiruvananthapuram, India.
Frontiers in microbiology
|September 13, 2023
概括
大多数胃肠道菌群Mycobacterium abscessus亚种. 的菌株表现出克拉里素耐药性,这是由于 erm 基因中的特定突变造成的. 建议进行进一步的基因组研究,以了解高耐药性机制.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 遗传学 是一个遗传学.
背景情况:
- 这种细菌属于Mycobacterium abscessus亚种. ,一个可选的细胞内病原体,通常感染肺和皮肤表皮.
- 最近的发现表明它有可能殖民人类的胃上皮,尽管它在胃疾病中的作用尚不清楚.
- 虽然Helicobacter pylori是已确定的胃病原体,但M. abscessus亚种. 的殖民化需要调查.
研究的目的:
- 为了确定胃M. abscessus亚种的克拉里素耐药性概况. 的菌株. 的菌株.
- 为了确定与清胺素耐药性相关的rrl和erm41) 基因中的点突变.
- 为了研究胃隔离物中克拉里思罗米辛耐药性的遗传基础.
主要方法:
- 抗生素分析以确定克拉里胺的最小抑制度 (MIC).
- 在117个胃M. abscessus亚种中对rrl和erm41) 基因进行核酸序列分析. 的菌株. 的菌株.
- 克拉里胺素敏感和耐药菌株之间的基因序列的比较.
主要成果:
- 观察到高患病率的克拉里素耐药性:79.48%的菌株是耐药的 (MIC90 ≤512μg/mL),而20.51%是敏感的 (MIC90 ≤8μg/mL).
- 在rrl基因中没有发现赋予克拉里胺抗性的相关突变.
- 在erm41) 基因中特定的核酸变异 (C 到 T 在位置28,159,330;G 到 A 在位置238) 与克拉里素耐药性相关.
结论:
- erm(41) 基因突变与胃M. abscessus亚种的克拉里素耐药性密切相关. 一个. .
- 在这些隔离物中,rrrl基因似乎没有在明素耐药性方面发挥显著作用.
- 建议进一步进行基因组分析,以阐明其他可能的机制,这些机制有助于胃M. abscessus亚种的高克拉里素耐药性. 一个. .
关键词:
在Helicobacter Pylori的研究中,这种细菌是Mycobacterium abscessus的亚种.抗生素耐药性 抗生素耐药性克拉里基素耐药性 克拉里基素耐药性 克拉里基素耐药性时间 (41) erm (41)胃部疾病 胃部疾病更多相关视频
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