Background: The emergence and propagation of different phylogenetic groups of antimicrobial-resistant E. coli have become a worldwide health concern in human and veterinary medicine. Therefore, the evaluation of the phylogenetic distribution of antibiotic-resistant E. coli is important for therapeutic and economic purposes. The aims of this study were to determine phylogenetic groups and patter...

Background and Objectives: E. coli and Klebsiella spp. are recognized as most prevalent bacteria causing urinary tract infection (UTI), the most common bacterial infection. Decreasing of antimicrobial susceptibility in urinary pathogens has made difficulty in treatment of UTI. The aim of this study was to determine antibiotic susceptibility of E. coli and Klebsiella spp. isolated from urine of ...

With the aim of the secretion of human granulocyte macrophage-colony stimulating factor (hGM-CSF) in Escherichia coli, hGM-CSF cDNA was fused in-frame next to the signal sequence of ST toxin (ST-I) of exteroxigenic E. coli, containing 53 or 19 amino acids of signal peptide. The fused STsig::hGM-CSF coding fragments were inserted into a T7-based expression plasmid. The recombinant plasmids were ...

background and objectives: shiga toxin-producing escherichia coli (stec) have emerged as human pathogens and con- tamination via animal origin has been a major public health concern. we compared the distribution of phylogenetic groups and prevalence of stx gene variants among the pathogenic strains of escherichia coli isolated from feces of diarrheatic calves in tehran suburb farms. materials a...

the aim study antibacterial effects of silver nanoparticles against resistant strains of e.coli bacteria.12 strains of e. coli strains arising urinary infection were isolated from hospitalized patient in zabolhospitals. minimum inhibitory concentration of winter cherry were determined by dilution method in various concentration on bacteria. the highest mic values was found to be 100ppm against ...

results the results showed that the isolated e. coli strains were sensitive to these antibiotics: erythromycin (52.94%), tetracycline (76.47%), ceftazidime (41.17%), cefixime (35.29%), penicillin (76.47%), ampicillin (58.82%) and nalidixic acid (41.17%). examination of the herbal extracts showed that the highest maximum inhibitory concentration (mic) against drug resistant e. coli was 200 ppm. ...

In modern medical processes, new antimicrobial drugs are being widely used in order to rapid and essential eradication of resistant bacterial strains. Broad-spectrum beta-lactamases are enzymes originated from mutations in the common plasmid genes mediators for beta-lactamases such as TEM-1, TEM-2, and SHV-1 are transferred among bacterial species. The genes coding the production of ESBL are of...