在健康的奶牛中,阴道细菌的分布和抗菌素耐药性概况
Brandi M Macleod1, Theodoros Ntallaris2, Jane M Morrell2
1College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, United States.
Frontiers in veterinary science
|March 2, 2026
概括
乳牛的阴道细菌,包括像大肠杆菌这样的常见物种,对几种抗生素表现出耐药性. 这凸显了监测这些细菌抗微生物药物耐药性 (AMR) 的必要性,以防止在群体和人类中传播.
科学领域:
- 兽医微生物学 兽医微生物学
- 动物健康 动物健康
- 抗微生物耐药性 抗微生物耐药性
背景情况:
- 来自奶牛的阴道细菌分离物对于了解动物健康和预防病原体传播至关重要.
- 这些细菌的抗菌素耐药性 (AMR) 对动物和人类都构成风险.
研究的目的:
- 描述奶牛阴道微生物群的可培养细菌组成.
- 为了确定这些阴道细菌分离物的抗微生物耐药性 (AMR) 概况.
- 用机器学习研究细菌共同发生的模式.
主要方法:
- 从40只健康的奶牛中分离和识别阴道细菌.
- 使用磁盘扩散方法 (EUCAST断点) 进行抗菌敏感性测试.
- 无监督机器学习 (围绕Medoids进行分区,并发网络分析) 用于微生物群分析.
主要成果:
- 确定了127个分离体,代表34个物种; *Histophilus somni*, *Streptococcus pluranimalium* 和 *Escherichia coli* 是最常见的.
- 网络分析显示,S. pluranimalium和H. somni是微生物相互作用中的关键物种.
- * 葡萄球菌* spp., * 菌* spp. 和 * 大肠杆菌* 对包括青素,tigecycline,四环素和levofloxacin在内的各种抗生素表现出显著的耐药性.
结论:
- 奶牛中的共生生殖道细菌可以作为AMR基因的储存库.
- 在这些细菌中监测AMR对于有效的群体管理和公共卫生战略至关重要.
- 了解阴道微生物群的组成和耐药性对于控制AMR传播至关重要.
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