›› 2012, Vol. 39 ›› Issue (2): 203-206.

• 流行病防治 • 上一篇    下一篇

猪源大肠杆菌O157∶H7耐药表型和消毒剂抗性调查

李军1, 谢宇舟1, 冯世文2, 彭昊1, 陈泽祥1, 禤雄标1, 胡帅1, 马春霞1, 谢永平1, 杨威1, 曾芸2   

  1. 1. 广西兽医研究所,广西南宁 530001;2. 广西大学动物科学技术学院,广西南宁 530005
  • 收稿日期:1900-01-01 修回日期:2011-08-02 出版日期:2012-02-20 发布日期:2012-02-20
  • 通讯作者: 杨威; 曾芸

Investigation of Drug and Disinfectants Resistance of Pig Source E.coli O157∶H7

LI Jun1, XIE Yu-zhou1, FENG Shi-wen2, PENG Hao1, CHEN Ze-xiang1, XUAN Xiong-biao1, HU Shuai1, MA Chun-xia1, XIE Yong-ping1, YANG Wei1, ZENG Yun2   

  1. 1. Guangxi Veterinary Research Institute,Nanning 530001,China;2. College of Animal Science and Technology,Guangxi University,Nanning 530005,China
  • Received:1900-01-01 Revised:2011-08-02 Online:2012-02-20 Published:2012-02-20

摘要: 为了调查广西猪源大肠杆菌O157∶H7分离株的耐药表型和消毒剂抗性情况,本研究测定5株猪源大肠杆菌O157∶H7广西分离株的药物敏感性和消毒剂抗性,并应用PCR对5株细菌的耐氨基糖苷类抗生素基因:氨基糖苷磷酸转移酶基因aph(3)-Iia、乙酰转移酶基因aadAaadB进行扩增。27种抗菌药物的敏感结果表明,5株菌株只对氟苯尼考、头孢曲松、头孢西丁和头孢噻肟敏感;对罗红霉素、多黏菌素B、利福平、林可霉素、阿莫西林、氨苄西林和头孢噻吩的耐药率为100%;对壮观霉素、链霉素、头孢拉定等药物的耐药率在20%~60%之间。在5株大肠杆菌O157∶H7广西分离株中,分别有1株、1株和3株菌株对23种、11种和9种抗菌药产生耐药性。PCR结果证实,5株细菌携带有耐氨基糖苷类抗生素基因,耐药基因的存在与其耐药表型有一定的相关性。消毒剂抗性结果显示,5株细菌对聚维酮碘溶液、新洁尔灭消毒液、稀戊二醛溶液、双季铵盐—碘消毒液、复方过氧乙酸具有抗性,只对二氯异氰尿酸钠粉敏感。研究结果对预防和控制广西大肠杆菌O157∶H7提供了数据。

关键词: 大肠杆菌O157∶H7; 耐药性; 消毒剂抗性

Abstract: To investigate the information of drug resistance phenotypes and disinfectants resistance of pig source E.coli O157∶H7 isolated from Guangxi,the drug sensitive and disinfectants resistance were assayed. Meanwhile,3 aminoglycoside antibiotic resistance genes,aph(3)-Iia,aadA and aadB were amplified by PCR. The results of drug sensitive to 27 antibiotics showed that 5 strains were sensitive to Florfenicol,Ceftriaxone,Cefoxitin and Cefotaxime. The rate of drug resistance to Roxithromycin,Polymyxin B,Rifampin,Lincomycin,Amoxycilin,Ampicilin and Cephalothin were 100%. The rate of drug resistance to other antibiotics,such as Trobicin,Streptomycin,Cefradine were between 20% and 60%. Among of 5 strains,1 strain,1 strain and 3 strains were resistances to 23,11 and 9 antibiotics,respectively. The results of PCR confirmed that genome of 5 strains contained aminoglycoside antibiotic resistance genes. Antibiotic resistance genes had a certain correlation with drug resistance phenotypes. The results of disinfectants resistance showed that 5 strains were resistance to Povidone lodine solution,Bromogeramine solution,Glutaraldehyde solution,double quaternary ammonium salt-iodine disinfection liquid and compound of peracetic acid,except dischloroisocyanuric acid sodium chloride powder. Our results will provide information to prevention and control of E.coli O157∶H7 in Guangxi.

Key words: E.coli O157∶H7; drug resistance; disinfectant resistance

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