Recently another MITE-like structure, called the integron mobilization unit (IMU), has been described flanking a defective class 1 integron harbouring a carbapenem resistance gene, blaGES-5, in a clinical Enterobacter cloacae strain. Although the IMU sequence is not related to the MITE reported in our study, IMU-based mobilization of the integron could be demonstrated using a transposase provid...

In this study, we aimed to evaluate the performance of different phenotypic tests to detect carbapenem-resistant Enterobacteriaceae. Three different phenotypic methods were evaluated: (1) combined-disk test of meropenem plus phenylboronic acid or EDTA reading after 24 h and 48 h; (2) selective/chromogenic read after 24 h and after 48 h; and (3) overnight selective enrichment broth containing 10...

background and objective : carbapenems are therapeutic choice against infections caused by gram-negative bacilli including strains of acinetobacter baumannii. resistance to these antibiotics is mediated by efflux pumps, porins, pbps and ß-lactamases. the aim of this study was to determine the possibility of existence of mbls, oxas and ges-1 betalactamase genes among clinical isolates of acineto...

1. Yigit H, Queenan AM, Anderson GJ et al. Novel carbapenemhydrolyzing b-lactamase, KPC-1, from a carbapenem-resistant strain of Klebsiella pneumoniae. Antimicrob Agents Chemother 2001; 45: 1151–61. 2. Smith Moland E, Hanson ND, Herrera VL et al. Plasmidmediated, carbapenem-hydrolysing b-lactamase, KPC-2, in Klebsiella pneumoniae isolates. J Antimicrob Chemother 2003; 51: 711–4. 3. Yigit H, Que...

Members of the genus Aeromonas that commonly occur in various aquatic ecosystems are taken into account as vectors spreading antibiotic resistance genes (ARGs) in the environment. In our study strains of Aeromonas spp. (n = 104) not susceptible to ampicillin were isolated from municipal sewage of different levels of purification - raw sewage, activated sludge and treated wastewater. The crucial...