Emerg Microbes Infect:中国上海金黄色葡萄球菌ST188的感染分析

2018-04-01 MedSci MedSci原创

金黄色葡萄球菌是人类和家畜物种感染的重要病原体,但对金黄色葡萄球菌在相同地理环境和同一时期内引起不同宿主物种感染的克隆分布的了解尚未清楚。2012年至2014年,通过鉴定中国上海的牛、小儿和成人患者金黄色葡萄球菌引起的感染,我们确定甲氧西林敏感的金黄色葡萄球菌(MSSA)ST188是引起多种宿主物种感染的主要谱系。全基因组测序和表型分析表明ST188可能来自家畜,而且从牲畜和人类中分离的ST188

金黄色葡萄球菌是人类和家畜物种感染的重要病原体,但对金黄色葡萄球菌在相同地理环境和同一时期内引起不同宿主物种感染的克隆分布的了解尚未清楚。

2012年至2014年,通过鉴定中国上海的牛、小儿和成人患者金黄色葡萄球菌引起的感染,我们确定甲氧西林敏感的金黄色葡萄球菌(MSSA)ST188是引起多种宿主物种感染的主要谱系。全基因组测序和表型分析表明ST188可能来自家畜,而且从牲畜和人类中分离的ST188之间没有明显的基因组或毒力差异。ST188的毒力与其粘附性和鼻定殖能力有关。该结果与ST188较强的上皮细胞粘附和生物膜形成特性一致。此外,粘附和生物膜形成相关基因以多个拷贝存在并且在ST188中的表达明显增加。

总之,该研究结果表明,金黄色葡萄球菌ST188是中国上海引起人和家畜感染的主要菌株。由于其与细菌粘附和生物膜形成相关的因子的高表达,ST188具有定殖和感染不同宿主物种的能力。

原始出处:

Wang Y, Liu Q, et al., Phylogenetic analysis and virulence determinant of the host-adapted Staphylococcus aureus lineage ST188 in China. Emerg Microbes Infect. 2018 Mar 29;7(1):45. doi: 10.1038/s41426-018-0048-7.

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    2018-08-09 xjy02
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