分子鉴定和全基因组序列分析,对从奶牛中分离出来的6型和2454型甲素耐药性和乳腺炎相关的黄金葡萄球菌序列进行分析
Mohammad H Rahman1, Mohamed E El Zowalaty2, Linda Falgenhauer3
1Department of Microbiology and Hygiene, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.
Journal of genomics
|February 7, 2024
概括
来自孟加拉国感染乳腺炎的奶牛的两个金黄色葡萄球菌菌株被测序. 一种菌株表现出抗生素耐药性基因 (mecA,blaZ),而另一种则没有,为未来的研究提供了基因组数据.
科学领域:
- 微生物学 微生物学
- 基因组学就是基因组学.
- 兽医科学 兽医科学 兽医科学
背景情况:
- 与乳腺炎相关的黄金葡萄球菌 (Staphylococcus aureus) 的抗菌耐药性给全球经济带来了重大挑战.
- 鉴定牛乳腺炎的金黄色葡萄球菌株 (Staphylococcus aureus) 对于了解疾病动态和耐药性模式至关重要.
研究的目的:
- 在孟加拉国从感染乳腺炎的奶牛中分离出来的两个*金黄色葡萄球菌*菌株进行基因组测序草案.
- 分析基因组的毒性因素,抗菌素耐药性基因和遗传关系.
- 为该地区未来的分子流行病学研究建立参考基因组.
主要方法:
- 使用微生物学和PCR技术分离和识别金黄色葡萄球菌.
- 通过Illumina NextSeq 550进行抗生素敏感性测试和全基因组测序.
- 生物信息分析包括连接组装,基因识别,MLST和核心基因组的遗传学分析.
主要成果:
- 从孟加拉国乳腺炎病例中生成了 Staphylococcus aureus 的两个基因组草案 (BR-MHR220 和 BR-MHR281).
- BR-MHR220 携带了 *mecA* 和 *blaZ* 耐药基因,被确定为 ST-6,CC5,spa 类型 t304.4.
- BR-MHR281缺乏检测到的抗性基因,并被确定为ST-2454,CC8,spa类型t7867.
结论:
- 基因组数据提供了关于孟加拉国乳腺炎相关的黄金葡萄球菌的见解.
- 这些参考基因组对于跟踪病原体进化和抗菌素耐药性非常有价值.
- 了解牛乳腺炎中S. aureus的基因组基础对于控制策略至关重要.
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