社区获得的甲素耐药黄金葡萄球菌序列1型与山羊乳腺炎相关的基因组分析
Priscylla C Vasconcelos1, Elma L Leite1, Mauro M S Saraiva1,2
1Department of Animal Science, College for Agricultural Sciences, Federal University of Paraiba (CCA/UFPB), Areia 58051-900, PB, Brazil.
Pathogens (Basel, Switzerland)
|January 22, 2024
概括
在巴西发现了一种耐美西林的金黄色葡萄球菌 (MRSA) ST1菌株,导致山羊的亚临床乳腺炎. 这种社区获得的MRSA菌株与人类感染有关,这表明人类对动物的潜在传播.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 流行病学 流行病学
背景情况:
- 羊的亚临床乳腺炎在乳制品生产中构成了重大经济挑战.
- 甲素耐药黄金葡萄球菌 (MRSA) 是全球日益严重的公共卫生问题.
- 了解MRSA菌株的基因组和流行病学特征对于有效控制至关重要.
研究的目的:
- 为了研究MRSA ST1菌株的基因组和流行病学特征,该菌株从巴西山羊亚临床乳腺炎中分离出来.
- 确定确定的MRSA菌株的抗微生物耐药性概况,毒性因子和家族遗传关系.
- 为了探索MRSA菌株在乳制品山羊环境中的潜在起源和传播途径.
主要方法:
- 从山羊奶中分离金黄色葡萄球菌和对抗菌素敏感性的测试.
- 使用Illumina MiSeq平台进行全基因组测序.
- 在分析包括MLST,抗菌素耐药性基因检测,毒性因子识别和基于SNP的家族遗传学分析.
主要成果:
- 隔离的MRSA菌株被确定为ST1和spa类型t128,对素,青素和四环素具有耐药性.
- 这种菌株含有SCCmec类型IVa (2B) 和毒性基因lukF-PV和lukS-PV.
- 遗传学分析显示,该菌株与社区获得的MRSA (CA-MRSA) 菌株密切相关,与全球人类感染有关,这表明动物人类传播.
结论:
- 这是首次报告在美洲与山羊奶相关的CA-MRSA菌株.
- 这些发现表明MRSA ST1菌株的潜在人类起源,突出了复杂的水平基因转移机制.
- 该研究强调了对动物群体中MRSA的监测对潜在的动物传播和公共卫生影响的重要性.
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