In vitro activity of doripenem against Acinetobacter baumannii clinical isolates.
Doripenem is a carbapenem with activity against Gram-positive and Gram-negative pathogens. This study evaluated the in vitro activity of doripenem against a collection of 87 Acinetobacter baumannii clinical isolates, showing that the activity of doripenem was superior to imipenem and meropenem for strains carrying the bla(OXA-58) gene. A. baumannii clinical isolates expressing the bla(OXA-24) gene were resistant to doripenem, imipenem and meropenem. However, in clinical isolates expressing the bla(OXA-58) gene, the percentage of isolates with a doripenem minimum inhibitory concentration >8microg/mL was much lower than that of imipenem and meropenem. This study shows that the activity of doripenem was superior to imipenem and meropenem for strains carrying the bla(OXA-58) gene.
Marti
Sara
S
Servei de Microbiologia, Centre de Diagnòstic Biomèdic, Hospital Clínic, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.
Sánchez-Céspedes
Javier
J
Alba
Verónica
V
Vila
Jordi
J
D000151:Acinetobacter Infections / Q000382:microbiology*; D040981:Acinetobacter baumannii / Q000187:drug effects* / Q000302:isolation & purification; D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D015780:Carbapenems / Q000494:pharmacology*; D000077726:Doripenem; D006801:Humans; D015378:Imipenem / Q000494:pharmacology; D000077731:Meropenem; D008826:Microbial Sensitivity Tests; D013845:Thienamycins / Q000494:pharmacology; D001618:beta-Lactamases / Q000235:genetics
D000900:Anti-Bacterial Agents; D015780:Carbapenems; D013845:Thienamycins; D015378:Imipenem; D000077726:Doripenem; D001618:beta-Lactamases; C410345:beta-lactamase OXA-24; C534889:beta-lactamase OXA-58, Acinetobacter baumannii; D000077731:Meropenem