Fiche publication
Date publication
octobre 2014
Journal
Journal of microbiological methods
Auteurs
Membres identifiés du Cancéropôle Est :
Pr HOCQUET Didier
Tous les auteurs :
Sauget M, Cabrolier N, Manzoni M, Bertrand X, Hocquet D
Lien Pubmed
Résumé
The emergence of Enterobacteriaceae producing the class D carbapenemase OXA-48 has become a public health concern, particularly in southern Europe and in the Mediterranean area. The existing MALDI-TOF MS assays that detect carbapenemase activity have disregarded the Enterobacteriaceae producing OXA-48-like enzymes. Here, we assessed the ability of an optimized MALDI-TOF MS imipenem hydrolysis assay to detect OXA-48-like-producing Enterobacteriaceae. We tested 372 non duplicate isolates of Enterobacteriaceae from 9 species, among which 92 harbored a blaOXA-48-like gene and 180 were non-susceptible to ertapenem. The vast majority (98.9%) of the OXA-48-like producers were detected and 97.8% of the ertapenem non-susceptible isolates were correctly classified. From the agar plate to the final result, the turnaround time of the test was 90min. This quick, easy and accurate MALDI-TOF MS test can expedite the implementation of hygiene measures to prevent dissemination of OXA-48-like-producing Enterobacteriaceae and limit outbreaks.
Mots clés
Carbapenemase, Infection control, Klebsiella pneumoniae, MALDI-TOF MS
Référence
J. Microbiol. Methods. 2014 Oct;105:88-91