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来自墨西哥的牛群中出现多药耐药性腹性大肠杆菌

Yaraymi Ortiz¹, Brenda Cerino¹, Mauricio Moreno¹

¹Universidad Autónoma de Nuevo León, Facultad de Ciencias Biológicas, San Nicolás de los Garza, Nuevo León, México 66455, Mexico.

Journal of food protection

|February 29, 2024

概括

在墨西哥的牛群中发现了抗生素耐药的致病性大肠杆菌菌株,这构成了公共卫生风险. 在阿瓜斯卡利昂特斯的牛群中,感染这些耐药菌株的风险更高,特别是EHEC,EPEC和ETEC.

科学领域:

兽医微生物学兽医微生物学
食品安全食品安全
抗微生物耐药性抗微生物耐药性

背景情况:

墨西哥是主要的牛生产国,人们越来越担心牲畜对抗生素的耐药性.
大肠杆菌 (E. coli) 病变型是动物和人类健康的重要病原体.

研究的目的:

确定牛肉和奶牛便中的大肠杆菌病型的流行率和抗生素耐药性模式.
为了比较E.大肠杆菌病型发生在墨西哥阿瓜斯卡利昂特斯和纽埃沃莱昂之间.

主要方法:

分析了Aguascalientes和Nuevo Leon的110头牛 (牛肉/奶牛) 的便样本.
使用选择性和染色基媒体对大肠杆菌进行隔离和确认.
多重PCR用于腹引起的大肠杆菌的鉴定,Kirby-Bauer用于抗菌敏感性测试.

主要成果:

所有动物都携带大肠杆菌;34%的动物携带病变型,主要是肠出血性大肠杆菌 (EHEC),肠病原性大肠杆菌 (EPEC) 和肠毒性大肠杆菌 (ETEC).
与新莱昂相比,阿瓜斯卡利昂特斯的牛患大肠杆菌病变型的风险高出8.5倍.
所有病型菌株都对红红素,四环素和三甲/硫甲醇表现出耐药性;奶牛菌株也对五种β-乳酸盐有耐药性.

结论:

引起腹的大肠杆菌病型存在于墨西哥牛群中,在阿瓜斯卡利昂特斯的流行率更高.
在这些病变型中观察到显著的抗微生物耐药性,包括多药耐药性.
这些抗药性病原体在食物链中的存在是一个重大的公共卫生问题.

关键词:

抗生素耐药性抗生素耐药性牛群是牛群,牛群是牛群,牛群是牛群.这种腹是致腹的.埃舍里希亚大肠杆菌 (Escherichia coli) 是一个大肠杆菌.病态型病态型病态型

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