在一个健康的视角中,Streptococcus dysgalactiae中的抗菌素耐药性模式
Marte Glambek1, Steinar Skrede1,2, Audun Sivertsen3
1Department of Medicine, Haukeland University Hospital, Bergen, Norway.
Frontiers in microbiology
|August 28, 2024
概括
链球菌 (Streptococcus dysgalactiae,SD) 的抗生素耐药性是一个越来越令人担忧的问题. 这项研究在人类和动物菌株中发现了明显的耐药性模式,很少有宿主之间耐药性基因交换的证据,这表明耐药性特征的动物传播有限.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 一个健康,一个健康.
背景情况:
- 斑马球菌 (Streptococcus dysgalactiae,SD) 是人类和动物的一种重要病原体.
- 在SD中抗生素耐药性的增加需要对其跨物种传播的研究.
- 一个健康的观点对于理解动物传播和抗药性交换至关重要.
研究的目的:
- 探索人类和动物之间的SD动物性传播.
- 研究来自不同宿主群体的SD之间的抗生素耐药性特征交换的可能性.
- 分析来自不同宿主的SD分离物的抗微生物敏感性和基因组数据.
主要方法:
- 全基因组测序和表型抗微生物敏感性测试对407个SD分离物进行.
- 分离物包括来自挪威 (2018-2019) 的人类血液感染 (n=274) 和动物感染 (n=133).
- 遗传学分析被用来划分与宿主相关的基因型抵抗体.
主要成果:
- 在26%的人类,25%的伴侣动物和2%的牲畜中检测到抗菌素耐药性基因.
- 观察到明显的宿主相关的基因型抗体,与不同的人类对红色素的抗性基因 (erm(A) 与动物的 erm(B) / lsa(C).
- 在人类和动物SD中,在不同的移动基因元素中发现了四环素耐药性基因tet(O),在宿主中几乎相同的移动元素的罕见实例.
结论:
- SD菌株表现出与宿主适应和利基专业化一致的基因划分.
- 在挪威,不同生态之间的SD菌株或耐药基因的直接传播似乎并不常见.
- 虽然宿主专业化是显而易见的,但抗性元素罕见交换的可能性需要持续监测.
关键词:
挪威 挪威 挪威 挪威 挪威一个健康,一个健康.链球菌 dysgalactiaeae 这种疾病.动物动物动物动物动物动物动物抗生素耐药性 抗生素耐药性横向基因转移是指横向的基因转移.人类 人类 人类 人类 人类 人类 人类整个基因组测序是全基因组测序.更多相关视频
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