Background Enterobacterales are among the most common causes of bacterial infections in
the community and among hospitalized patients, and multidrug-resistant (MDR) strains have …

The purpose of this investigation was to determine the prevalence of plasmid-mediated
AmpC (pAmpC) and carbapenemases in Enterobacteriaceae collected from 35 hospitals in …

In this prospective study all Enterobacteriaceae isolates (n= 2,129) recovered in the clinical
microbiology laboratory during October 2009 to April 2010 were analyzed for AmpC …

Understanding the nuances of AmpC β-lactamase–mediated resistance can be challenging,
even for the infectious diseases specialist. AmpC resistance can be classified into 3 …

Some bacteria that possess chromosomally determined AmpC β-lactamases may express
these enzymes at a high level following exposure to β-lactams, either by induction or …

ABSTRACT Enterobacter spp., Serratia marcescens, Citrobacter freundii, and Morganella
morganii are characterized by chromosomally encoded AmpC β-lactamases and possess …

AmpC β-lactamases are clinically important cephalosporinases encoded on the
chromosomes of many of the Enterobacteriaceae and a few other organisms, where they …

In vivo induction of AmpC beta-lactamases produces high-level resistance to many beta-
lactam antibiotics in Enterobacteriaceae, often resulting in the need to use carbapenems or …

The burden of antibiotic-resistant infections among Gram-negative bacteria is increasing.
Resistance to third-generation cephalosporins (3GCs) in Enterobacteriaceae is mainly …

Objectives The objective of this study was to determine the occurrence of chromosomal and
plasmid-mediated β-lactamases (AmpC) genes in a collection of Malaysian isolates of …