Aerobactin and other virulence factor genes among strains of Escherichia coli causing urosepsis: association with patient characteristics
نویسندگان
چکیده
منابع مشابه
Virulence characteristics and antimicrobial susceptibility of uropathogenic Escherichia coli strains.
Eight virulence factors associated with uropathogenic Escherichia coli (UPEC) were investigated in 204 clinical isolates of E. coli recovered from urine cultures at counts ≥10(5). The bacteria were classified into two groups according to the number of leukocytes in urine samples from which they were isolated: group I ≤8 leukocytes/hpf, 104 strains; group II >8 leukocytes/hpf, 100 strains....
متن کاملProduction of cytolethal distending toxin and other virulence characteristics of Escherichia coli strains of serogroup O86.
Genetic and phenotypic virulence markers of different categories of diarrhoeagenic Escherichia coli were investigated in 106 strains of enteropathogenic E. coli (EPEC) serogroup O86. The most frequent serotype found was O86:H34 (86%). Strains of this serotype and the non motile ones behaved as EPEC i.e., carried eae, bfpA and EAF DNA sequences and presented localised adherence to HeLa cells. Se...
متن کاملPrevalence of virulence genes in Escherichia coli isolates of patients with UTI
Abstract Background and Objective: Urinary tract infection refers to the presence of microbial pathogens in the urinary tract and is one of the most common infections in outpatient and hospitalized patients. A wide variety of extra-intestinal infections in humans and animals are caused by the extracellular strains of Escherichia coli (EXPEC). Materials and methods: A total of 50 E. coli iso...
متن کاملExtended virulence genotypes of Escherichia coli strains from patients with urosepsis in relation to phylogeny and host compromise.
Among 75 urosepsis isolates of Escherichia coli, 29 virulence factor (VF) genes were detected by use of a novel polymerase chain reaction (PCR) assay. Compared with probe hybridization, the PCR assay's specificity was 100% and sensitivity 97.1%. fyuA (yersiniabactin: overall prevalence, 93%), traT (serum resistance, 68%), and a pathogenicity-associated island marker (71%) occurred in most strai...
متن کاملFrequency of selected virulence-associated genes in intestinal and extra-intestinal Escherichia coli isolates from chicken
Background: Although Escherichia coli (E. coli)is a part of intestinal normal microflora of warm-blooded animals, includingpoultry, outbreaks occur in poultry raised below standard sanitation and duringthe course of respiratory or immunosuppressive diseases. Avian pathogenic E.coli (APEC) harbors several genes associated with virulence andpathogenicity. APEC strains are responsible for some dis...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1988
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.56.2.405-412.1988