title: Efflux pump overexpression in multiple-antibiotic-resistant mutants of Bacteroides fragilis.
abstract: Multidrug-resistant mutants of a wild-type Bacteroides fragilis strain (strain ADB77) and a quadruple resistance nodulation division family efflux pump deletion mutant (ADB77 Delta bmeB1 Delta bmeB3 Delta bmeB12 Delta bmeB15) were selected with antimicrobials. Ampicillin, doripenem, imipenem, levofloxacin, and metronidazole selected for mutants from both strains; cefoxitin selected for mutants from strain ADB77 only; and sodium dodecyl sulfate selected mutants from ADB77Delta bmeB1 Delta bmeB3 Delta bmeB12 Delta bmeB15 only. The mutants overexpressed one or more efflux pumps.
authors.affiliation: Greater Los Angeles Veterans Administration Healthcare Systems, University of California, Los Angeles, CA 90073, USA.
authors.forename: Lilian
authors.initials: L
authors.lastname: Pumbwe
authors.forename: Daniel
authors.initials: D
authors.lastname: Glass
authors.forename: Hannah M
authors.initials: HM
authors.lastname: Wexler
mesh_terms: D000900:Anti-Bacterial Agents / Q000493:pharmacokinetics* / Q000494:pharmacology; D001425:Bacterial Outer Membrane Proteins / Q000096:biosynthesis* / Q000235:genetics / Q000378:metabolism; D001441:Bacteroides fragilis / Q000235:genetics* / Q000378:metabolism*; D024881:Drug Resistance, Bacterial; D026901:Membrane Transport Proteins / Q000096:biosynthesis* / Q000235:genetics / Q000378:metabolism
chemical_list: D000900:Anti-Bacterial Agents; D001425:Bacterial Outer Membrane Proteins; D026901:Membrane Transport Proteins