pseudomonas aeruginosa is a leading cause of bum infections, and antibiotic- resistant strains of this bacterium are emerging due to extensive application of antibiotics in the bum unit of hospitals. in this study 50 strains of p. aeruginosa were isolated from bum patients infected with this micro-organism in the bum unit of a general hospital in kerman, iran over one year [may 1999-aprii2000]....

To obtain a general framework for understanding selection of antibiotic-resistant mutants, allelic diversity was examined with about 600 fluoroquinolone-resistant mutants of mycobacteria. Selection at low fluoroquinolone concentration produced many low-level resistance mutants. Some of these contained mutations that conferred unselected antibiotic resistance; none contained alterations in the q...

background :    unfortunately, antibiotic resistance has become an increasingly critical problem in many countries like iran. since there are very few published data on antibiotics resistance in alborz province, the aim of this study was to survey the pattern of antimicrobial resistance and prevalence detection of tem-type beta-lactamases among clinical isolates of escherichia coli using univer...

Aim: The aim was to determine the prevalence and evaluation of antibiotic resistance pattern and minimum inhibitory concentration (MIC) of Campylobacter species isolated from foods of animal origin. Materials and Methods: A total of 280 samples (comprising 150 chicken meat, 50 chevon and 80 milk) were collected from retail meat markets, slaughter houses and dairy farms and analyzed for isolatio...

conclusions ctx-m was the most prevalent esbl genotype in uropathogenic e. coli (upec) isolated from uti. in addition, a high frequency of qnr genes among esbl-producing e. coli was identified in this study. in order to avoid treatment failures, we recommend using phenotypic and molecular methods to diagnose these enzymes and qnr genes. results the highest sensitivity was seen to imipenem (96.7...

infectious diseases are one of the most common causes of morbidity and mortality and the spread of resistant microorganisms is playing a significant role in this regard. the purpose of this study was to assess the trend in antimicrobial resistance of gram-positive bacteria at the main referral teaching hospital in tehran during a 4-year period. all patients' biological isolates such as blood, u...

objective(s):helicobacter pylori (h. pylori) is a pathogenic bacterium that colonizes the stomachs of approximately 50% of the world’s population. resistance of h. pylori to antibiotics is considered as the main reason for the failure to eradicate this bacterium. the aim of this study was to determine the rate of resistant h. pylori strains to various antimicrobial agents in different areas of ...