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 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: Extended-spectrum beta-lactamases (ESBLs) may not always be detected in
routine susceptibility tests. This study reports the performance of the cefepime-clavulanate …

Abstract Background: Detecting plasmid-mediated AmpC (pAmpC) β-lactamase-producing
organism is important for optimal infection control and providing accurate and effective …

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

Background & objectives: AmpC β-lactamases are Group I cephalosporinases that confer
resistance to a wide variety of β-lactam drugs. Plasmid mediated AmpC β-lactamases has …

In this study, 121 Escherichia coli samples isolated from clinical specimens obtained from
Pakistan Institute of Medical Science, Islamabad, Pakistan, were analyzed for extended …

Abstract β-lactamases represent the most common mechanism of β-lactam resistance.
Extended spectrum β-lactamases (ESBLs) represent a major group of β-lactamses currently …

Objective The production of β-lactamase enzymes such as AmpC β-lactamases and
extended-spectrum β-lactamases (ESBLs) is among the main mechanisms for resistance to …