AmpC enzymes can be differentiated from other extended-spectrum β-lactamases by their
ability to hydrolyse cephamycins as well as other extended-spectrum cephalosporins. The …

Background: AmpC type β-lactamases are commonly isolated from extended-spectrum
Cephalosporin-resistant Gram-negative bacteria. Also, resistance appeared in bacterial …

AmpC β-lactamases are cephalosporinases that hydrolyze cephamycins as well as other
extended-spectrum cephalosporins and are poorly inhibited by clavulanic acid. Although …

The purpose of this study was to simultaneously screen for Extended-spectrum β-
lactamases (ESBL) and AmpC β-lactamases in gram negative clinical isolates from four …

BACKGROUND AND OBJECTIVE: The widespread use of beta-lactam antibiotics has lead
to the development of resistance to this group of antibiotics in bacterial pathogens due to …

AmpC beta-lactamases are cephalosporinases that confer resistance to a wide variety of β-
lactam drugs and that may thereby create serious therapeutic problems. Although reported …

Background: AmpC β-lactamases are often plasmid mediated that hydrolyze all b-lactam
antibiotics except cefepime and carbapenems. Aim of the study: We aimed to evaluate the …

Methods: The study included 909 consecutive Gram-negative isolates recovered from
clinically significant specimens during June 2007-May 2008 as part of an ICMR-ESBL study …

Although plasmid-mediated AmpC β-lactamases were first reported in the late 1980s, many
infectious disease personnel remain unaware of their clinical importance. These enzymes …

ABSTRACT A new cefoxitin-agar medium (CAM)-based assay was compared to the
previously published modified three-dimensional (M3D) assay for the detection of AmpC …