Prevalence and characteristics of extended spectrum beta-lactamase-producing Escherichia coli from bovine mastitis cases in China

文献类型： 外文期刊

第一作者： Yang Feng

作者： Yang Feng;Zhang Shi-dong;Shang Xiao-fei;Wang Xu-rong;Wang Ling;Yan Zuo-ting;Li Hong-sheng

作者机构：

关键词： extended spectrum beta-lactamase; Escherichia coli; multidrug-resistance; bovine mastitis

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2018 年 17 卷 6 期

页码：

收录情况： SCI

摘要： The aim of the study was to investigate the prevalence and characterization of extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli isolated from bovine mastitis cases in China. ChromID ESBL agar was used to confirm ESBL-producing E. coli. PCR and DNA sequencing were employed to characterize the genotype of ESBL-producers. Antimicrobial susceptibility was measured by disc diffusion. Overall, 73 of 318 E. coli isolates (22.96%) were identified as ESBL-producers. Of these ESBL-producing E. coli, the prevalence of bla(CTX-M) and bla(TEM-1) was 97.26 and 71.23%, respectively. The predominant CTX-M-type ESBL was CTX-M-15 (65.75%), followed by CTX-M-14 (10.96%), CTX-M-55 (9.59%), CTX-M-64 (5.48%), CTX-M-65 (4.11%) and CTX-M-3 (1.37%). This study is the first report of CTX-M-64 and CTX-M-65 in E. coli isolated from bovine mastitis. Furthermore, 72 ESBL-producing E. coli isolates (98.63%) were found to be multidrug-resistance. This study noted high prevalence and rates of antimicrobial resistance of ESBL-producing E. coli isolates from bovine mastitis cases in China.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序