Background: This study aimed to describe the association between age groups and antimicrobial susceptibility patterns, also integron presence in Escherichia coli and Klebsiella pneumoniae  isolates from Tabriz, Iran. Materials and methods: 140 isolates of E. coli and 150 isolates of K. pneumoniae, both comprising the same number of children and adult isolates were examined for susceptibil...

Background: Enterohemorrhagic Escherichia coli (EHEC) O157:H7 is an infectious zoonotic pathogen causing human infections. These infections, in some cases, can lead to hemolytic uremic syndrome and its life-threatening complications and even death worldwide. The first intimate bacterial adhesion, intimin (I), with its own receptor translocated intimin receptor (Tir) and E. coli secreted protein...

In this study, it has been our purpose to isolate and serotype enteropathogenic E. coli, salmonella and shigella and determine their resistance to antibiotics. 502 swab specimens were collected during mid-July to midNovember. 1986. from two children's hospitals in Tenran. From 502 cultured specimens. 108 specimens were positive for salmonella. shigella and enteropathogenic E. coli. corresp...

introduction:  the aim of the present study was to investigate the presence and the frequency of eaec as etiologic agent of diarrhea in shiraz. enteroaggregative e. coli (eaec) is increasingly recognized as a cause of often persistent diarrhoea in children and adults in both developing and developed countries, and have been identified as the cause of several outbreaks worldwide.   materials and...

introduction chicken is the only avian species in which polyclonal antibodies, like igg is transported from the hen to the egg yolk in a similar manner as the transport of mammalian igg from the mother to the fetus. immunoglobulin y in the chicken is transported to the egg and accumulates in the egg yolk in large quantities. igy is an egg yolk antibody that has been used widely for treatment an...

conclusions the analysis recommended that ta genes are prevalent in clinical isolates of e. coli strains. the analysis revealed that hipba ta system is associated with biofilm formation. results the results of the analysis revealed that 107 e. coli isolates were potent for biofilm formation by cra. the findings by microtiter plates showed that 102 e. coli isolates were biofilm producers. the re...

background: escherichia coli is a commensal-pathogenic organism, which includes a wide range of strains. despite several advanced molecular-genomic technologies for detecting and identifying different strains of e. coli, enterobacterial repetitive intergenic consensus polymerase chain reaction (eric-pcr) technique is a quick, sharp and cost effective fingerprint method. the major purpose of the...

background: integrons are mobile genetic elements able to obtain the antibiotic resistance gene cassettes. the prevalence of integrons in the enterobacteriaceae family has been varied and played an important role in the development of the drug resistant bacteria. the present study aimed to investigate the contribution of class 2 and 3 integrons in drug resistant diarrheagenic escherichia coli s...

resistance to oxyimino cephalosporins antibiotics in enterobacteriaceae is primarily done by the extended spectrum β-lactamases (esbls). clear identification of risk factors for esbl-producing infections is necessary. therefore, efficient strategies can be developed to decrease outbreak of these infections. the aim of this study was to determine the antibacterial susceptibility and esbls patter...

conclusions the results showed that e. coli isolated from patients with uti had eight virulence factors with high frequencies. moreover, these results alleged a direct connection between virulence factors and antimicrobial resistance in e. coli. results the frequency of virulence factors papc, afa, sfa/foc, fimh, hly, neuc, ibea, and iucc were 53.3%, 51.7%, 53.3%, 56.7%, 23.3%, 31.7%, 20%, and ...