the genus pseudomonas consists of more than 120 species that are ubiquitous in moist environments such as water and soil ecosystems and are pathogenic to animals and humans. within the genus of pseudomonas, p. aeruginosa is most frequently associated with human infections. the bacterium is regarded as an opportunistic pathogen, primarily causing nosocomial infections in immunocompromised patien...

conclusions sphingomonas paucimobilis can cause serious infections, especially in immunocompromised patients with determined risk factors such as indwelling catheters and diabetes mellitus, due to the effects of multiple virulence factors, together with biofilm formation. results all the clinical isolates of s. paucimobilis produced biofilms. primary bacteraemia (n = 16) was the most common cli...

the incidence of virulence factors among 114 enterococcus faecalis and 35 enterococcus faecium strains from different clinical specimens were compared with those isolated from control groups. a few of the isolates expressed two or more of the following traits simultaneously: hemolysin, aggregation substance, gelatinase, dnase, hemagglutinin and antibiotic resistance. the frequencies of hemolysi...

background and objectives: pseudomonas aeruginosa possesses a variety of virulence factors that may contribute to its pathogenicity. the aim of this study was to evaluate opri , oprl and toxa genes for pcr identification of clinical p. aeruginosa . in order to find out any relation between special virulence factors and special manifestation of p. aeruginosa infections, we detected virulence fac...

conclusions: high percentage of hemolysins, biofilm and beta lactamase production by isolated staphylococci, suggests an important role of these virulence factors in the pathogenesis of isolated staphylococci from dermatitis lesions. the s. aureus isolates from wound infections, show a high sensitivity pattern to all examined antibiotics. only ciprofloxacin was found to be active against all is...

background putative virulence factors are responsible for the pathogenicity of utis caused by pseudomonas aeruginosa (p. aeruginosa). resistance of p. aeruginosa to commonly used antibiotics is caused by the extreme overprescription of those antibiotics. objectives the goal of the present study was to investigate the prevalence of virulence factors and the antibiotic resistance patterns of p. a...

extra-intestinal pathogenic escherichia coli (expec) strains are divided into uropathogenic e. coli (upec), strains causing neonatal meningitis and septicaemic e. coli. the most common pathotype of expec is found among patients with urinary tract infection (uti), defined as upec. these bacteria are responsible for >90% of cases of uti and are often found amongst the faecal flora of the same hos...

helicobacter pylori infection is a common gastrointestinal infection that can cause pathological effects, increase oxidative stress and induce an inflammatory response in gastric mucosa. inflammatory aspects may prompt the production of radical oxygen substance (ros) which may damage cells and release 8-hydroxydyoxyguanosine (8-ohdg) to serum. in this study, we evaluate the prevalence of h. pyl...

conclusions by studying the profiles of virulence genes and mlva, it can be concluded that eiec isolates do not have high heterogeneity and are derived from a limited number of clones. background enteroinvasive escherichia coli (eiec) isolates cause dysentery in humans. several virulence factors associated with eiec pathogenesis have been characterized. multilocus variable-number tandem-repeat ...

background: the aim of this study was to determine the prevalence of virulence-associated genes and enterobacterial repetitive intergenic consensus pcr (eric-pcr) analysis of campylobacter spp. isolated from children with diarrhea in iran. methods: a total of 200 stool specimens were obtained from children under 5 years during july 2012 to july 2013. detection of c. jejuni and c. coli was perfo...