American Society for Microbiology, Journal of Clinical Microbiology, 8(45), p. 2740-2742, 2007
DOI: 10.1128/jcm.01093-07
American Urological Association (AUA), The Journal of Urology, 4S(183), 2010
DOI: 10.1016/j.juro.2010.02.913
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ABSTRACT Mutations in the quinolone resistance-determining regions of gyrA , gyrB , parC , and parE were studied in 30 fluoroquinolone-resistant clinical isolates of Escherichia coli producing extended-spectrum β-lactamases. Ten isolates showed a mutation in parE that was significantly associated with an increase in the MIC for fluoroquinolones.