title: Comparison of antibiotic resistant and sensitive strains of Haemophilus influenzae type b in The Netherlands by outer-membrane protein subtyping.
abstract: The percentage of beta-lactamase producing Haemophilus influenzae strains from patients with meningitis in The Netherlands increased from 0% in 1975/1976 to 4.6% in 1985/1986 (n = 1559). Twenty-three isolates resistant to ampicillin, penicillin, chloramphenicol, rifampicin and/or tetracycline were subtyped to determine if one resistant strain was spreading. (Sub)typing was performed by capsular typing, analysis of the major outer membrane protein patterns on sodium dodecylsulfate gels (SDS-PAGE subtypes), lipopolysaccharide serotyping and biotyping. The (sub)types of the resistant strains were similar to those of sensitive strains, thus indicating that antibiotic resistant strains develop at random.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001425:Bacterial Outer Membrane Proteins / Q000032:analysis*; D004352:Drug Resistance, Microbial; D004591:Electrophoresis, Polyacrylamide Gel; D006193:Haemophilus influenzae / Q000145:classification* / Q000187:drug effects / Q000201:enzymology; D006801:Humans; D008070:Lipopolysaccharides / Q000032:analysis; D008583:Meningitis, Haemophilus / Q000134:cerebrospinal fluid / Q000382:microbiology*; D009426:Netherlands; D012703:Serotyping; D001618:beta-Lactamases / Q000096:biosynthesis
chemical_list: D000900:Anti-Bacterial Agents; D001425:Bacterial Outer Membrane Proteins; D008070:Lipopolysaccharides; D001618:beta-Lactamases