Cited by 1,269Escherichia coli research studiesUrinary Tract Infections ManagementEnterobacteriaceae and Cronobacter Research

Extended Virulence Genotypes of Escherichia coli Strains from Patients with Urosepsis in Relation to Phylogeny and Host Compromise

Johnson, James R., Stell, Adam L.·2000·The Journal of Infectious Diseases

Abstract

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 strains from both compromised and noncompromised hosts. Present in <20% of strains each were sfaS, focG (F1C fimbriae), afa/dra, bmaE (M fimbriae), gafD (G fimbriae), cnf1, cdtB (cytolethal distending toxin), cvaC (colicin V), and ibeA (invasion of brain endothelium). Different VFs were variously confined to virulence-associated phylogenetic group B2 (as defined by multilocus enzyme electrophoresis); concentrated in group B2, but with spread beyond; or concentrated outside of group B2. These findings provide novel insights into the VFs of extraintestinal pathogenic E. coli and demonstrate the new PCR assay's utility for molecular epidemiological studies.

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Crossref · 10.1086/315217

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Authors
Johnson, J. R., & Stell, A. L.
Affiliations
University of Minnesota (US)
Corresponding author
Johnson, James R.
Venue
The Journal of Infectious Diseases
Published
2000-01
Volume
181
Issue
1
Pages
261-272
ISSN
  • 0022-1899 (ISSN-L)
  • 1537-6613
OpenAlex
W2138139644
Cited by
1,269
References
88
Citations by year
2026: 28 · 2025: 44 · 2024: 43 · 2023: 42 · 2022: 67 · 2021: 63 · 2020: 71 · 2019: 55 · 2018: 59 · 2017: 59 · 2016: 67 · 2015: 75 · 2014: 75 · 2013: 64 · 2012: 54
FWCI
18.94
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Infectious Diseases (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01dk047504-08)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK 47504)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Endocrinology › Escherichia coli research studies
  • Health Sciences › Medicine › Epidemiology › Urinary Tract Infections Management
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Endocrinology › Enterobacteriaceae and Cronobacter Research
Keywords
Escherichia coli, urosepsis, virulence genes, extraintestinal pathogenic Escherichia coli, phylogenetic groups, fyuA, traT, serum resistance, pathogenicity islands, fimbriae, cytolethal distending toxin, PCR testing, molecular epidemiology
MeSH terms
Escherichia coli, Escherichia coli Infections, Genes, Bacterial, Genotype, Humans, Phylogeny, Urinary Tract Infections, Virulence, Washington, Polymerase Chain Reaction, Bacteremia, DNA Primers

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