Plasmid-Determined AmpC-Type β-Lactamases

Alain Philippon , Guillaume Arlet and George A . Jacoby - Lactamases β Plasmid - Determined AmpC

AmpC β lactamases in Urinary Klebsiella pneumoniae Isolates: First Report of ACC Type AmpC β-lactamase Resistance in Iran

Background & Objective: The production of plasmid-mediated AmpC beta-lactamases (PMABLs) among urinary Klebsiella pneumoniae isolates causes a severe problem to the successful treatment of urinary tract infections (UTIs). This study was designed to evaluate antimicrobial resistance, the presence of AmpC beta-lactamase genes, and the genetic relatedness among K. pneumoniae strains separated from...

Kinetic Properties of Four Plasmid-Mediated AmpC -Lactamases

Kinetic Properties of Four Plasmid-Mediated AmpC -Lactamases Cédric Bauvois, Akiko Shimizu Ibuka, Almeida Celso, Jimena Alba, Yoshikazu Ishii, Jean-Marie Frère, and Moreno Galleni* Centre d’Ingénierie des Protéines, Université de Liège, Sart Tilman, Belgium; Department of Food and Nutritional Sciences, University of Shizuoka, 52-1 Yada, Shizuoka 422-8526, Japan; and Department of Microbiology, ...

Widespread distribution of CTX-M and plasmid-mediated AmpC β-lactamases in Escherichia coli from Brazilian chicken meat

The dissemination of plasmid-mediated antimicrobial resistance genes may pose a substantial public health risk. In the present work, the occurrences of blaCTX-M and plasmid-mediated ampC and qnr genes were investigated in Escherichia coli from 16 chicken carcasses produced by four commercial brands in Brazil. Of the brands tested, three were exporters, including one of organic chicken. Our stud...

Dissemination of plasmid-encoded AmpC β-lactamases in antimicrobial resistant Salmonella serotypes originating from humans, pigs and the swine environment.

The aim of this study was to characterize and determine the inter-serovar exchange of AmpC β-lactamase conferring plasmids isolated from humans, pigs and the swine environment. Plasmids isolated from a total of 21 antimicrobial resistant (AMR) Salmonella isolates representing human clinical cases (n=6), pigs (n=6) and the swine farm environment (n=9) were characterized by replicon typing and re...