Prevalence of Plasmid mediated Quinolone Resistance Genes among 16SrRNA Methylase producing Escherichia coli Strains Isolated from Diseased Chickens

doi:10.7668/hbnxb.2010.01.045

Abstract

Abstract: In order to investigate the prevalence of plasmid-mediated quinolone resistance determinants(qnrA,qnrB,qnrS,qepA and aac(6′)-Ib-cr) among 16S rRNA methylase-producing Escherichia coli strains isolated from diseased chickens in Henan province,158 16S rRNA methylase-producing Escherichia coli strains isolated from diseased chickens during the years 2005-2008 were subjected to PCR for the presence of plasmid-mediated quinolone resistance determinants.The results revealed,of 158 16S rRNA methylase-producing E.coli strains,qnrA,qnrB,qnrS,qepA and aac(6′)-Ib-cr were detected in 0.6%,2.5%,13.9%,2.5% and 58.2%,respectively,suggesting plasmid-mediated quinolone resistance determinants were prevalent among 16S rRNA methylase-producing Escherichia coli strains isolated from diseased chickens in Henan province,with qnrS and aac(6′)-Ib-cr dominant.

Key words: Escherichia coli, Quinolone, Resistance, Plasmid mediated

CLC Number:

XIAO Fang,LI Xin-sheng,ZHANG Su-mei,LIU He-bing,PAN Yu-shan,LIU Jian-hua,DU Xiang-dang. Prevalence of Plasmid mediated Quinolone Resistance Genes among 16SrRNA Methylase producing Escherichia coli Strains Isolated from Diseased Chickens[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(1): 222-225. doi: 10.7668/hbnxb.2010.01.045.

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