伊朗反刍动物面部分离的大肠埃希菌o157:H7/NM的耐药性

E. Rahimi, F. Nayebpour
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引用次数: 18

摘要

细菌对抗菌药物的耐药性是一种现象性问题,对耐药性获得和传播的理解有助于制定新的策略,以解决这一现象的临床和社会经济影响,特别是在反刍动物中。对327份反刍动物粪便标本进行O157:H7/NM大肠杆菌检测,并采用圆盘扩散法进行抗生素药敏试验。根据美国临床实验室标准协会的规定,采用micellar - hinton琼脂,采用Kirby-Bauer圆盘扩散法检测分离物对抗菌药物的敏感性。分离到25株(7.6%)O157:H7/NH大肠杆菌,24株(96%)对一种或多种抗生素耐药。6例(24%)对1种抗生素耐药,11例(44%)对2种抗生素耐药,28%对多种抗生素耐药。以庆大霉素耐药表型最常见(56.0%),其次是氨苄西林(48.0%)、红霉素(40.0%)、阿莫西林(16.0%)、四环素(12.0%)、氯霉素(8.0%)、萘啶酸(8.0%)和链霉素(4.0%),所有大肠杆菌O157分离株均对头孢呋辛敏感。考虑到大肠杆菌在兽医医学中的临床意义,对细菌病原体的监测是更好地了解和感染控制方法的必要条件。关键词:大肠杆菌o157;反刍动物粪便;抗生素耐药性;
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Antimicrobial resistance of Escherichia coli O 157:H7/NM isolated from feaces of ruminant animals in Iran
Bacterial resistance to antimicrobial agents is a phenomenon problem, and the understanding of resistance acquisition and transmission can contribute to the development of new strategies to the clinical and socio-economic implication of this phenomenon, especially in ruminant animals. A total of 327 fecal samples of ruminant animals were examined for E. coli O157:H7/NM and the antibiotic susceptibility testing was determined by disc diffusion according to the Clinical Laboratory Institute. Isolates were tested for susceptibility to antimicrobial drugs by the Kirby-Bauer disc diffusion method using MI‹ellar-Hinton agar according to the Clinical Laboratory Standards Institute. Twenty-five (7.6%)Escherichia coli O157:H7/NH were isolated, 24(96%) were resistant to one or more antibiotic agent. Six (24%) E. coli were resistant to one antibiotic agent, 11(44%) to two agents and 28% exhibited multi drug resistance. Gentamycin resistance phenotype was the most common (56.0%), followed by ampicillin (48.0%), erythromycin (40.0%), amoxicillin (16.0%), tetracycline (12.0%), chloramphenicol (8.0%) nalidixic acid (8.0%), and streptomycin (4.0%) and all E. coli O157 isolates were susceptible to cefuroxime. Considering the clinical implication of E. coli in veterinary medicine, surveillance of the bacterial pathogens became imperative for better understanding and infection control approach.   Key words: Escherichia coli O 157, ruminant feces, antibiotic resistance, Iran.
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