title: Relationship between antibiotic use and incidence of MexXY-OprM overproducers among clinical isolates of Pseudomonas aeruginosa.
abstract: In a university hospital, time-series analysis revealed a significant relationship between antibiotic (aminoglycoside, fluoroquinolone, and cefepime) use and incidence of MexXY-OprM-overproducing Pseudomonas aeruginosa. In vitro experiments confirm that such mutants were readily selected from both PAO1 and clinical strains when grown in the presence of these antibiotics.
authors.affiliation: National Reference Centre for Antibiotic Resistance--P. aeruginosa, Besançon, France. dhocquet@chu-besancon.fr
authors.forename: Didier
authors.initials: D
authors.lastname: Hocquet
authors.forename: Arno
authors.initials: A
authors.lastname: Muller
authors.forename: Karine
authors.initials: K
authors.lastname: Blanc
authors.forename: Patrick
authors.initials: P
authors.lastname: Plésiat
authors.forename: Daniel
authors.initials: D
authors.lastname: Talon
authors.forename: Dominique Louis
authors.initials: DL
authors.lastname: Monnet
authors.forename: Xavier
authors.initials: X
authors.lastname: Bertrand
mesh_terms: D000617:Aminoglycosides / Q000494:pharmacology / Q000627:therapeutic use; D000900:Anti-Bacterial Agents / Q000494:pharmacology / Q000627:therapeutic use*; D001425:Bacterial Outer Membrane Proteins / Q000235:genetics / Q000378:metabolism*; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism*; D000077723:Cefepime; D002511:Cephalosporins / Q000494:pharmacology / Q000627:therapeutic use; D003470:Culture Media; D018432:Drug Resistance, Multiple / Q000235:genetics*; D024841:Fluoroquinolones / Q000494:pharmacology / Q000627:therapeutic use; D005602:France; D006785:Hospitals, University; D006801:Humans; D015994:Incidence; D026901:Membrane Transport Proteins / Q000235:genetics / Q000378:metabolism*; D008826:Microbial Sensitivity Tests; D009154:Mutation; D011552:Pseudomonas Infections / Q000188:drug therapy* / Q000382:microbiology; D011550:Pseudomonas aeruginosa / Q000187:drug effects* / Q000302:isolation & purification / Q000378:metabolism
chemical_list: D000617:Aminoglycosides; D000900:Anti-Bacterial Agents; D001425:Bacterial Outer Membrane Proteins; D001426:Bacterial Proteins; D002511:Cephalosporins; D003470:Culture Media; D024841:Fluoroquinolones; D026901:Membrane Transport Proteins; C402791:MexXY protein, Pseudomonas aeruginosa; C402263:OprM protein, Pseudomonas aeruginosa; D000077723:Cefepime