Characterization of plasmid-mediated quinolone resistance by the <I>qnrS</I> gene in <I>Escherichia coli </I>isolated from healthy chickens and pigs
نویسندگان
چکیده
منابع مشابه
Emergence of the plasmid-mediated quinolone resistance gene qnrS1 in Escherichia coli isolates in Greece.
Three major groups of the plasmid-mediated quinolone resistance (Qnr) determinants have been identified so far in Enterobacteriaceae: the QnrA group, which includes 6 variants, the QnrB group, which includes 19 variants, and the QnrS group, which includes 3 variants (5). Although Qnr proteins produce only low-level resistance, they provide a favorable background for higher resistance to occur a...
متن کاملEmergence of plasmid-mediated quinolone resistance genes in Enterobacteriaceae isolated from chickens in China.
increase in the number of different qnr-positive serotypes was observed in 2007, although the total number of positive isolates was evenly distributed between 2003 and 2007 (Table 1). The qnrS1 variant was highly prevalent in Salmonella Corvallis supporting the results recently published from Denmark, the Netherlands and the UK. 2,6,8 The Danish study included a restricted set of Salmonella Cor...
متن کاملAssociation of plasmid-mediated quinolone resistance and virulence markers in Escherichia coli isolated from water.
This work aimed to investigate the association of the carriage of plasmid-mediated quinolone resistance (PMQR) genes, the virulence potential encoded in pathogenicity islands (PAIs) and the phylogenetic background in Escherichia coli strains isolated from waters of diverse origin. Antimicrobial susceptibilities were determined by the disc diffusion method. Screening for PMQR (qnr, aac(6')-Ib-va...
متن کاملPrevalence of plasmid-mediated quinolone resistance in Escherichia coli isolated from diseased animals in Taiwan
Escherichia coli (E. coli) is a zoonotic pathogen that often causes diarrhea, respiratory diseases or septicemia in animals. Fluoroquinolones are antimicrobial agents used to treat pathogenic E. coli infections. In this study, 1,221 E. coli strains were isolated between March, 2011 and February, 2014. The results of the antimicrobial susceptibility testing showed a high prevalence of quinolone ...
متن کاملqnrB, another plasmid-mediated gene for quinolone resistance.
A novel plasmid-mediated quinolone resistance gene, qnrB, has been discovered in a plasmid encoding the CTX-M-15 beta-lactamase from a Klebsiella pneumoniae strain isolated in South India. It has less than 40% amino acid identity with the original qnr (now qnrA) gene or with the recently described qnrS but, like them, codes for a protein belonging to the pentapeptide repeat family. Strains with...
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ژورنال
عنوان ژورنال: Veterinární Medicína
سال: 2009
ISSN: 0375-8427,1805-9392
DOI: 10.17221/108/2009-vetmed