J4 ›› 2010, Vol. 36 ›› Issue (1): 205-209.

• 基础研究 • 上一篇    下一篇

长春地区部分医院革兰阴性杆菌超广谱β-内酰胺酶的基因类型及分布

李蓓菡1|2, 张学英3, 李菁华1, 孙延波1   

  1. 1.吉林大学基础医学院病原生物学教研室|吉林 长春 130021;2.浙江省东阳市疾病预防控制中心|浙江 东阳 322100;3.吉林大学中日联谊医院检验科|吉林 长春 130033
  • 收稿日期:2009-09-23 出版日期:2010-01-28 发布日期:2010-01-28
  • 通讯作者: 李菁华(Tel:0431-85619574,E-mail:ljh@jlu.edu.cn) E-mail:ljh@jlu.edu.cn
  • 作者简介:李蓓菡(1982-)|女|浙江省东阳市人|医学硕士|主要从事细菌耐药性的研究。
  • 基金资助:

    吉林省科技厅科研基金资助课题(200705374)

Genotypes and distribution of extended-spectrmu β-lactamases in gram-negative bacterial species isolated from infectious specimens in hospitals in Changchun

 LI Bei-Han1|2, ZHANG Xue-Ying3, LI Jing-Hua1, SUN Yan-Bo1   

  1. 1.Department of Pathogenobiology,School of Basic Medical Sciences,Jilin University| Changchun 130021, China;2.Dongyang Center of Disease Control and Prevention of Zhejiang Province,Dongyang 322100,China;3.Department of Laboratory|China-Japan Union Hospital, Jilin University,Changchun |130033, China
  • Received:2009-09-23 Online:2010-01-28 Published:2010-01-28

摘要:

目的:了解长春地区部分医院超广谱β-内酰胺酶 (ESBLs)基因在革兰阴性杆菌中的分布及类型,为合理使用抗生素提供依据。方法:对165株临床分离革兰阴性杆菌采用 PCR方法分别扩增SHV、TEM和CTX基因片段。PCR产物经测序后,登录GenBank查询并比较基因类型。结果:在165株革兰阴性杆菌中检出耐药基因及多重耐药基因68株, 其中 TEM型检出率最高(12.12%),其余依次为CTX-M-1型(4.24%),SHV型(3.64%)和CTX-M-9型(3.03%);同时检出 SHV+TEM型、TEM+CTX-M-1型、TEM+CTX-M-9型、TEM+CTX-M-1+CTX-M-9型和 SHV+TEM+CTX -M-1+CTX-M-9型等多组多重耐药基因。随机选择扩增阳性的 PCR产物进行测序,得到 SHV-11亚型、TEM-1亚型、CTX-M-3亚型、CTX-M-15亚型、CTX-M-14和CTX-M-18亚型。结论:长春地区部分医院革兰阴性杆菌ESBLs的基因类型主要为TEM-1亚型、SHV-11亚型、CTX-M-14亚型和CTX-M-18亚型。

关键词: 超广谱β-内酰胺酶; 革兰阴性杆菌; , 聚合酶链反应

Abstract:

Abstract:Objective To illustrate the genotypes and distribution of the extended-spectrmu β-lactamases (ESBLs) of gram-negative bacterial isolates from several hospitals in Changchun,Jilin,China and to provide the reliable basis for antibiotic application. Methods Drug-resistant genes associated with ESBLs in gram-negative bacterial isolates were amplified by PCR. PCR products were sequenced and compared with the genotypes reported in  GenBank.Results  68 strains of 165 isolates exhibited drug resistance such as  TEM-type (12.12%),CTX-M-1 type (4.24%),SHV-type (3.64%) and CTX-M-9 type (3.03%).The multi-drug resistant genes including SHV + TEM-type,TEM + CTX-M-1 type,TEM + CTX-M-9 type,TEM + CTX-M-1 + CTX-M-9 type and SHV + TEM + CTX-M-1 + CTX-M-9 type were also detected. The positive PCR amplification products were  randomly selected and  sequenced,the SHV-11 subtype,TEM-1 subtype,CTX-M-3 subtype and the CTX-M-15 subtype,CTX-M-14 and CTX-M-18 subtype were obtained. Conclusion The genotypes of ESBLs in gram-negative bacterial  isolates mainly include TEM-1 subtype,CTX-M-14 subtype,CTX-M-18 subtype,SHV-11 in Changchun area.

Key words: extended-spectrum β-lactamases;gram-negative bacilli;polymerase chain reaction

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