The expanded-spectrum beta-lactamase (ESBL) gene bla(VEB-1), identified worldwide in Enterobacteriaceae and Pseudomonas aeruginosa, is associated with either class 1 integrons or repeated elements. We report here the first association of bla(VEB-1a) with the insertion sequence ISCR2 in six Acinetobacter species isolates recovered from Argentina. That genetic structure was likely at the origin o...

One hundred fifty canine and feline Escherichia coli isolates associated with urinary tract infections were screened for the presence of extended-spectrum beta-lactamase (ESBL) genes. Out of 60 isolates suspected to be ESBL positive based on antimicrobial susceptibility testing, 11 ESBLs were identified, including one SHV-12 gene, one CTX-M-14 gene, and nine CTX-M-15 genes. This study provides ...

Background & Aims: One of the most common causes of bacterial resistance to beta-lactam antibiotics is beta-lactamase producing. The aim of this study was to compare the antibiotic resistance of urinary Escherichia coli (E. coli) isolates producing CTX-M and TEM type beta-lactamases, and to determine the strains with co-resistance to multiple antibiotics in Mashhad, Iran. Methods: E. coli b...

Introduction and objective: Klebsiella is an opportunistic pathogen that is an important cause of nosocomial infections. The prevalence of extended spectrum beta-lactamases (ESBLs)-producing strains and their resistance to betalactam antibiotics has had a daily increase. Because of the importance of these enzymes in Klebsiella pneumonia, this study was carried out to investigate it’s prevalence...

UNLABELLED The aim of the study was to evaluate the association of drug resistance with β-lactamase gene types in ESBL positive E. coli and Klebsiella pneumoniae-Kp. MATERIAL AND METHODS A total of 251 ESBL-positive E. coli and Kp isolates obtained from urine, tracheal aspirate, wound swab and blood from patients hospitalised at the University Clinics in Skopje were detected using the ESBL se...

Objectives: The aim of this prospective study was to assess the extent of dissemination of extended-spectrum  -lactamase (ESBL)-producing Enterobacteriaceae at the hospital level in the United Arab Emirates (UAE). Materials and Methods: A total of 662 Escherichia coli and Klebsiella pneumoniae samples were collected from three UAE hospitals between January and December 2008. ESBL screening and...

Emergence of extended-spectrum β-lactamase (ESBL) and fluoroquinolone resistance among ocular Enterobacteriaceae is increasing in higher frequency. Therefore, studies are being carried out to understand their multidrug resistance pattern. A total of 101 Enterobacteriaceae isolates recovered from various ocular diseases in a tertiary eye care center at Chennai, India during the period of January...

This study aimed to investigate antimicrobial resistance and molecular epidemiology of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli (E. coli) isolated from outpatients in town hospitals of Shandong province, China. Antimicrobial susceptibility of ESBL-producing E. coli was tested using the disk diffusion and resistance genes encoding for β-lactamases (blaTEM, blaCTXM, and bla...

The use of antibiotics in veterinary and human treatment can cause the development antibiotic resistance bacteria for β-lactam antibiotics. Worldwide, this has become a growing concern public health. Limited data are currently available regarding Extended Spectrum β-Lactamase (ESBL) Escherichia coli Indonesia. current study determined prevalence characteristics ESBL genes E. retail chicken meat...

BACKGROUND A common mechanism of resistance to beta-lactam antibiotics is the production of beta-lactamase by Gram-negative bacteria. Recently, nonderivative extended-spectrum beta-lactamases (ESBLs) from the TEM and SHV enzymes, such as CTX-M, that were related to different geographical regions have been recognized. OBJECTIVES The aim of this study was to determine the frequency of the CTX-M...