Detecting VIM-1 Production in Proteus mirabilis by an Imipenem-Dipicolinic Acid Double Disk Synergy Test

Characterization of a transmissible plasmid encoding VEB-1 and VIM-1 in Proteus mirabilis.

Outbreak of Acinetobacter baumannii with chromosomally encoded VIM-1 undetectable by imipenem-EDTA synergy tests.

Infections due to multidrugand carbapenem-resistant isolates of Acinetobacter baumannii were frequent among patients treated in the Tzannion General Hospital in Piraeus, Greece, throughout the period 2005 to 2006. Six of these isolates, derived from blood cultures of patients in three different wards (four were from patients in the intensive care unit) and taken at least 1 month apart from each...

Detection of CMY-99, a novel acquired AmpC-Type β-lactamase, and VIM-1 in Proteus mirabilis isolates in Bulgaria.

During the last years, outbreaks and countrywide spread of isolates producing -lactamases of the AmpC type or carbapenemases have been reported (1, 2). We detected three Proteus mirabilis isolates with reduced susceptibility to cephalosporins and carbapenems at the Alexandrovska University Hospital in Sofia. They were isolated between November 2011 and January 2012 from the urine of three patie...

Lipoprotein from Proteus mirabilis.

The biosynthesis of a Proteus mirabilis outer membrane protein of molecular weight of approximately 7,000 was found to be relatively resistant to puromycin and rifampin, as is the case for the Escherichia coli liporotein. Furthermore, the existence of the lipoprotein in P. mirabilis was indicated by a comparison of the amino acid compositions of the purified free and bound forms of this protein...

Hidden VIM-1 metallo-beta-lactamase phenotypes among Acinetobacter baumannii clinical isolates.

A total of 87 Acinetobacter baumannii nonrepetitive consecutive clinical isolates were tested for the presence of metallo-beta-lactamases (MBLs). Results of phenotypic assays (MBL Etest, imipenem/imipenem-EDTA combined-disk test, and imipenem/EDTA double-disk synergy test) were negative in all cases, but molecular testing revealed the presence of two bla(VIM-1)-carrying isolates. One isolate ha...