title: Antimicrobial resistance profile of Actinobacillus pleuropneumoniae and Actinobacillus porcitonsillarum.
abstract: A total of 83 Actinobacillus pleuropneumoniae and 58 Actinobacillus porcitonsillarum strains collected from slaughtered pigs in Switzerland were screened for susceptibility to 20 antimicrobial agents by MIC determinations. Resistance to sulfamethoxazole, the combination sulfamethoxazole-trimethoprim, tiamulin, tilmicosin, tetracycline, penicillin and ampicillin were found. A few A. porcitonsillarum isolates displayed decreased susceptibility to enrofloxacin. PCR analysis revealed the presence of the sul2 gene in approximately one-fifth of the sulfonamide-resistant A. pleuropneumoniae and A. porcitonsillarum isolates. The tetracycline-resistant A. pleuropneumoniae harbored tet(B) and tet(H), whereas the tetracycline-resistant A. porcitonsillarum isolates harbored the tet(B) gene. The penicillin and ampicillin-resistant A. pleuropneumoniae and A. porcitonsillarum harbored the bla(ROB-1) gene.
authors.affiliation: Institute of Veterinary Bacteriology, University of Berne, Länggass-Strasse 122, Postfach, CH-3001 Bern, Switzerland.
authors.forename: Denise
authors.initials: D
authors.lastname: Matter
authors.forename: Alexandra
authors.initials: A
authors.lastname: Rossano
authors.forename: Sandra
authors.initials: S
authors.lastname: Limat
authors.forename: Lorianne
authors.initials: L
authors.lastname: Vorlet-Fawer
authors.forename: Isabelle
authors.initials: I
authors.lastname: Brodard
authors.forename: Vincent
authors.initials: V
authors.lastname: Perreten
mesh_terms: D000188:Actinobacillus / Q000187:drug effects*; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D024901:Drug Resistance, Multiple, Bacterial; D008826:Microbial Sensitivity Tests
chemical_list: D000900:Anti-Bacterial Agents