background: escherichia coli is the most causative agent of urinary tract infections (utis). apart from all human infectious diseases, uti have a high prevalence and in most cases, escherichia coli is a dominance bacterium which can cause pyelonephritis and cystitis. the aim of the study was to determine the occurrence of some virulence genes expressing fimbriae, production of hemolysin and aer...

results the frequency of the baba2, icea1 and icea2 genes in the total isolates were 34 (54%), 14 (22.2%) and 34 (54%), respectively. the association of these virulence factors based on sex and age groups were not statistically significant (p > 0.05). there was a borderline significant association between icea1 and the clinical outcomes (p = 0.094). patients and methods in this study, 63 positi...

Due to the genetic similarity of pathogenic Escherichia coli isolated from birds and pathotypes human origin, it is suggested that they have a common ancestor may exchange virulence-associated genes. This study aimed detect genes in E. strains Red-browed Amazon parrot (Amazona rhodocorytha) kept at conservation institute Brazil. High variability virulence was observed, since 12 profiles were fo...

The phylogenetic profile of a gene is a reflection of its evolutionary history and can be defined as the differential presence or absence of a gene in a set of reference genomes. It has been employed to facilitate the prediction of gene functions. However, the hypothesis that the application of this concept can also facilitate the discovery of bacterial virulence factors has not been fully exam...

pasteurella multocida is an opportunistic pathogen responsible for pneumonia of lambs and goats, respiratory atrophic rhinitis of swine. although the molecular basis of the pathogenicity and host specificity of p. multocida is not well understood, several studies have reported that a number of proteins are correlated with the pathogenic mechanisms. adhesins have a crucial role in mediating colo...

INTRODUCTION The prevalence of virulence genes in non-typhoidal Salmonella (NTS) and its association with commonly used antibiotics in West Africa is unknown. METHODOLOGY We tested 185 NTS isolates from children, animals, and food products for the presence of twelve virulence genes by PCR. Ten of the virulence genes tested belonged to the five Salmonella pathogenicity islands implicated in it...

Objective(s): Pseudomonas aeruginosa is one of the most important nosocomial pathogens causing a high rate of mortality among hospitalized patients. Herein, we report the prevalence of antibiotic resistance genes, class 1 integrons, major virulence genes and clonal relationship among multidrug- resistant (MDR) P. aeruginosa, isolated from four referral hospitals in the...