virulent and resistant strains pseudomonas aeruginosa ( p. aeruginosa) is one of the most important cause of utis in pediatrics. the present study was carried to investigate the frequency of virulence factors in the multi-drug resistant strains of  p. aeruginosa isolated from pediatrics hospitalized due to the utis. one - hundred and forty three urine samples were collected from pediatric patie...

background: as for human trichomoniasis the host-parasite relationship is very complex, and the broad ranges of clinical symptoms are unlikely be attributable to a single pathogenic mechanism. specific random amplified polymorphic dna (rapd) markers of 490 bp, 720 bp and 460 bp using the primers tv-5, opa-6 and opa-11, respectively, were reported. this was the first description of possible ge­n...

helicobacter hepaticus was discovered in 1992 as a cause of liver cancer in the a/jcr mouse model. in susceptible mice, infection by h. hepaticus causes chronic gastrointestinal inflammation leading to neoplasia. it can also cause morphological changes in breast-glands leading to neoplasm and adenocarcinoma in mouse models. studies performed on humans have revealed that h. hepaticus may also be...

conclusions our study illustrates the importance of constantly monitoring the prevalent serotypes in any region in order to aid in the development of more effective vaccines. results our results revealed that in egypt, currently, the most prevalent serotypes were serogroup 6 and serotype 19f as they represented 58% of all isolates. high rates of resistance were found to different antibiotic cla...

BACKGROUND: Escherichia coli (E.coli) is one of the most common and important causative bacterium of urinary tract infections (UTIs) in both dogs and humans. OBJECTIVES: This study aimed to identify virulence genes and a phylogenetic group of E. coli isolated from the urine of dogs suffering from UTIs. METHODS: <em...

Human Leishmania infantum infection results in a spectrum of clinical expressions ranging from cutaneous to either asymptomatic or fatal visceral disease. In this context, characterization of parasite virulence appears to be relevant as a biological marker of intrinsic parasitic factors that can affect the pathology of leishmaniasis. Since parasite populations in naturally infected hosts are li...

Ten isolates of Paracoccidioides brasiliensis were examined for differences in virulence in outbred mice intravenously inoculated with the fungus, associated with mycelial morphology, and genetic patterns measured by random amplified polymorphic DNA (RAPD). Virulence was evaluated by viable yeast cell recovery from lungs and demonstration of histopathologic lesions in different organs. The resu...