objective(s) extensive use of quinolones has been associated with raising level of resistance. in the current, we focused on assessing the prevalence of escherichia coli resistance to quinolones and frequency of qnra, qnrb and qnrs in non esbls (extended spectrum beta-lactamases) and esbls producing e. coli with blashv and blatem. materials and methods one hundred and fifty e. coli isolates wer...

conclusions the results indicate that the rates of esbls are high in urine e. coli and k. pneumoniae isolates from tehran hospitals. also this study indicates that the urine isolates from male patients are significantly more resistant than the female isolates. materials and methods a total of 190 e. coli and k. pneumoniae isolates were collected from patients’ urine samples in hospitals from te...

background and objectives: the pathogenic strains of escherichia coli cause severe septicemia, urinary tract infection and wound sepsis. resistance of this organism to the expanded-spectrum cephalosporins occurs via the production of extended-spectrum β-lactamases (esbls) such as tem and shv. these enzymes hydrolyze oxyimino cephalosporins (cefotaxime, ceftazidime) and monobactams (aztreonam). ...

the present study was conducted to detect the occurrence, serotype, genotype, phylogenetic relationship and antimicrobial resistance pattern of stec from healthy goats of west bengal, india. from the 125 faecal samples collected from healthy goats, 245 isolates were identified as escherichia coli. the e. coli harbouring any gene for shiga toxins (stx1/stx2) was detected in 36 (14.7%) of the 245...

Introduction: Production of extended-spectrum beta-lactamase enzymes (ESBLs) in E. coli creates many problems for patients. These enzymes are located on transferable elements and can hydrolyze penicillins, broad-spectrum cephalosporins, and aztreonam. This study aimed to determine the clinical isolates of E. coli producing ESBLs of blaSHV and blaTEM in the city of Zanjan. Methods: This cross...

Background: Multidrug resistance and production of extended spectrum β-lactamases (ESBLs) by enteric gram-negative rods in hospitals and community continue to be worsened. We aimed to characterize the multidrug resistance and determine the prevalence of ESBL production by clinical isolates of Enterobacteriaceae in southeast Iran. Methods: Gram-negative bacteria isolated from clinical samples of...

conclusions our findings showed a high occurrence of metallo-β-lactamase production among p. aeruginosa isolates in burn patient infections in our region. also, there are p. aeruginosa isolates carrying the bla-vim-1 and bla-vim-2 genes in isfahan province. background metallo-β-lactamase-production among gram-negative bacteria, including pseudomonas aeruginosa, has become a challenge for treatm...

conclusions: this study highlighted the need to establish antimicrobial resistance surveillance networks for p. aeruginosa to determine the appropriate empirical treatment regimens. the high prevalence of multidrug resistance and production of esbls in p. aeruginosa isolates confirms the necessity of protocols considering these issues in the hospitals. results: the resistance against broad-spect...