First survey of metallo-beta-lactamases in clinical isolates of Pseudomonas aeruginosa in a German university hospital
G. Valenza, B. Joseph, J. Elias, H. Claus, A. Oesterlein, K. Engelhardt, D. Turnwald, M. Frosch, M. Abele-Horn, and C. Schoen.
Antimicrobial Agents and Chemotherapy 54 (8): 3493--3497 (August 2010)PMID: 20498315.

A total of 489 clinical isolates of Pseudomonas aeruginosa was investigated for metallo-beta-lactamase (MBL) production. Molecular analysis detected a blaVIM-1 gene in the chromosome of one isolate and a blaVIM-2 gene carried on the plasmid in seven isolates. Moreover, we showed that an initial screening by combined susceptibility testing of imipenem and ceftazidime followed by a confirmatory EDTA combination disk test represents a valid alternative to the molecular investigation of MBL genes, making MBL detection possible in routine diagnostic laboratories.
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