Background The problem of resistance to beta-lactam antibiotics, which is caused by ESBL
and AmpC β-lactamases, is getting worse globally. Infections caused by bacterial isolates …

Background: Many clinical laboratories have problems detecting various [sz]-lactamases.
Confusion exists about the importance of these resistance mechanisms, optimal test …

Abstract Background and Objective: AmpC β lactamases are one of the important causes of
drug resistance in gram negative bacteria. Failure to detect these enzymes in the laboratory …

Plasmid-mediated AmpC (pAmpC) and ESBL co-production was detected in Escherichia
coli a major etiologic agent of urinary tract infection. Isolates resistant to cefoxitin by CLSI …

Escherichia coli (E. coli) has been observed. Aims: Of this study was done to detect the
prevelance of ESBL, AmpC producing and ESBL and AmpC co-producing strains of …

AmpC β-lactamase is a cephalosporinase, which exhibits resistance against all existing β-
lactam antibiotics except carbapenems. Their occurrence in many bacterial pathogens …

Background. Carbapenem resistance among Gram‐negative isolates caused by the
production of the metallo‐β‐lactamase (MBL) enzyme is being increasingly reported …

Background: Antimicrobial resistance is a growing threat worldwide. The predominant
mechanisms for resistance to the β-lactam antibiotics in gram negative bacilli is the …

Background Resistant Pseudomonas aeruginosa is a serious concern for antimicrobial
therapy, as the common isolates exhibit variable grades of resistance, involving beta …

Methods: A total of 41 MDR E. coli isolates were randomly collected from various clinical
samples and processed. Isolated organisms were tested for antibiotics resistance pattern …