RT Journal Article T1 In Vivo Selection of Fluoroquinolone-Resistant Escherichia coli Isolates Expressing Plasmid-Mediated Quinolone Resistance and Expanded-Spectrum β-Lactamase T2 [In vivo selection of fluoroquinolone-resistant Escherichia coli isolates expressing plasmid-mediated quinolone resistance and expanded-spectrum beta-lactamase] A1 Poirel, Laurent A1 Pitout, Johann D.D. A1 Calvo, Lucy A1 Rodriguez-Martinez, Jose-Manuel A1 Church, Deirdre A1 Nordmann, Patrice K1 Escherichia coli K1 Plásmidos K1 Secuencia de Bases K1 Ciprofloxacino K1 Conjugación Genética K1 Farmacorresistencia Bacteriana K1 Fluoroquinolonas K1 Datos de Secuencia Molecular K1 beta-Lactamasas K1 Antiinfecciosos AB A ciprofloxacin-resistant Escherichia coli isolate, isolate 1B, was obtained from a urinary specimen of a Canadian patient treated with norfloxacin for infection due to a ciprofloxacin-susceptible isolate, isolate 1A. Both isolates harbored a plasmid-encoded sul1-type integron with qnrA1 and blaVEB-1 genes. Isolate 1B had amino acid substitutions in gyrase and topoisomerase. PB American Society for Microbiology SN 0066-4804 YR 2006 FD 2006-04 LK http://hdl.handle.net/10668/1570 UL http://hdl.handle.net/10668/1570 LA en NO Poirel L, Pitout JD, Calvo L, Rodriguez-Martinez JM, Church D, Nordmann P. In Vivo Selection of Fluoroquinolone-Resistant Escherichia coli Isolates Expressing Plasmid-Mediated Quinolone Resistance and Expanded-Spectrum β-Lactamase. [In vivo selection of fluoroquinolone-resistant Escherichia coli isolates expressing plasmid-mediated quinolone resistance and expanded-spectrum beta-lactamase]. Antimicrob. Agents Chemother. 2006; 50(4):1525-7 NO Journal Article; Research Support, Non-U.S. Gov't; DS RISalud RD Apr 19, 2025