中国农业科学 ›› 2012, Vol. 45 ›› Issue (17): 3608-3616.doi: 10.3864/j.issn.0578-1752.2012.17.018

• 兽医 • 上一篇    下一篇

中国部分地区猪源和牛源金黄色葡萄球菌耐药性及凝固酶分型研究

 刘洋, 梁耀峰, 焦新安, 宋立, 张纯萍, 宁宜宝, 徐士新   

  1. 1.扬州大学兽医学院,江苏扬州 225009
    2.中国兽医药品监察所, 北京 100081;3华南农业大学,广州 510642
  • 收稿日期:2012-03-09 出版日期:2012-09-01 发布日期:2012-07-26
  • 通讯作者: 通信作者宋 立,Tel:010-62103679;E-mail:songyili0625@126.com
  • 作者简介:刘 洋,Tel:18655263080;E-mail:ex3022096@163.com
  • 基金资助:

    “十一五”国家科技支撑计划子课题(2006BAK02A03-1)

Antibiotic Resistance and Coagulase Typing of Staphylococcus aureus Isolates from Pigs and Cows in Part of China

 LIU  Yang, LIANG  Yao-Feng, JIAO  Xin-An, SONG  Li, ZHANG  Chun-Ping, NING  Yi-Bao, XU  Shi-Xin   

  1. 1.扬州大学兽医学院,江苏扬州 225009
    2.中国兽医药品监察所, 北京 100081;3华南农业大学,广州 510642
  • Received:2012-03-09 Online:2012-09-01 Published:2012-07-26

摘要: 【目的】了解中国动物源金黄色葡萄球菌的耐药现状,以及凝固酶血清型和基因型分布情况,为控制动物源金黄色葡萄球菌的传播和流行提供理论依据。【方法】用微量肉汤稀释法测定细菌耐药性;用凝固酶分型血清确定血清型别;扩增凝固酶基因(coa)并进行序列测定,用mega软件进行序列分析。【结果】共鉴定出124株金黄色葡萄球菌。耐药性检测结果表明,在13种测试抗菌药中,金黄色葡萄球菌对氨苄西林和青霉素的耐药率最高,接近100%,其次是红霉素75%,其它10种药物的耐药率在50%以下,头孢西丁耐药率27%,未发现万古霉素耐药菌株;凝固酶血清分型率达91%,共分出6个型,VII型,VI型和复合型占优势,未分离到Ⅲ型和Ⅴ型;扩增凝固酶基因,共分为6个基因型;构建了凝固酶基因的系统进化树。【结论】中国动物源金黄色葡萄球菌的耐药状况比较严重,猪源菌株的耐药率要高于牛源菌株。凝固酶血清型别多样,分布相对较集中,具有独特的流行特征;凝固酶表型与其基因的进化特征并没有出现直接对应关系,但为进一步开展兽医临床金黄色葡萄球菌分子流行病学调查研究奠定了理论基础。

关键词: 金黄色葡萄球菌, 耐药性, 凝固酶分型, 猪, 牛 

Abstract: 【Objective】The objective of the experiment is to study the status of antibiotics resistance and coagulase typing distribution of S.aureus in China, and provide a scientific basis for effective control of transmission and prevalence of S.aureus from animals.【Method】Antibiotics resistance was tested by broth dilution method, coagulase serotypes were identified by coagulase grouping serum, coa genes were amplified by PCR method and then sequenced for further analysis by mega software. 【Result】 A total of 124 S.aureus isolates were identified, and the result of resistance detection revealed that the resistant rate of ampicillin and penicillin was near 100%, erythromycin reached 75%, and other 10 antibiotics was below 50%. The positive rate of MRSA was 27%. No vancomycin resistant isolates was found. Six kinds of serotypes were observed and the rate of coagulase serotyping reached 91%: serotypes VII,VI and combined type were prevalent, whereas serotypes Ⅲ and Ⅴwere not found. The phylogenetic tree of coagulase gene was constructed. 【Conclusion】 The status of antibiotics resistance in China was relatively severe, swine isolates were severer than cattle ones. Coagulase serotypes were abundant and the distribution was comparative intensive, and possessed unique prevalence feature. The evolutional characteristic of coa gene had no direct relationship with coagulase serotypes, and this study has provided a theoretical basis for further veterinary research about molecular epidemiology and evolutionary tendency.

Key words: S. aureus, antibiotics resistance, coagulase typing, pig, cow