Molecular characterization of multiresistant Escherichia coli producing or not extended-spectrum β-lactamases.

ABSTRACT:

Background

The prevalence and type of plasmids, resistance genes and integrons carried by two collections of multiresistant E. coli producing or not extended-spectrum β-lactamases have been compared. Rep-PCR was used to determine the clonal relationship of the organisms. Plasmids were classified according to their incompatibility. Class 1 and Class 2 integrons and antibiotic resistance genes were analysed by PCR and sequencing.

Results

Both collections of organisms contained a large diversity of unrelated strains with some clones distributed in both groups of isolates. Large plasmids were identified in the two groups of organisms. Plasmids with replicons repK and repColE were more frequent among ESBL-producing isolates, while repFIA, repFII and repA/C replicons were more fre

SUBMITTER: Ruiz del Castillo B 

PROVIDER: S-EPMC3637601 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature