Evidence map›Paper›PMID 23240045›Full record

ArticlePloS one2012

Carriage of stx2a differentiates clinical and bovine-biased strains of Escherichia coli O157.

Smriti Shringi, Carrie Schmidt, Kaya Katherine, Kelly A Brayton, Dale D Hancock, Thomas E Besser

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
4.5field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

26 citing papers in PubMed, 39 citations in OpenAlex.

  1. Comparative Genomics ofMicroorganisms · 2022
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  5. The Virulence ofFrontiers in cellular and infection microbiology · 2020
    Article
  6. Pathogenomes of Atypical Non-shigatoxigenicFrontiers in microbiology · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Smriti ShringiDepartment of Veterinary Microbiology and Pathology, Washington State University, Pullman, Washington, United States of America.
Carrie Schmidt
Kaya Katherine
Kelly A Brayton
Dale D Hancock
Thomas E Besser
Washington State University · US

Funding

Infectious Diseases and Microbial Immunology Training ProgramT32AI007025 · NIAID · WASHINGTON STATE UNIVERSITY · PI Thomas H KAWULA, M KARIUKI NJENGA · 1985 to 2026
$7.4M
FOOD &WATERBORNE DISEASES INTEGRATED RESEARCH NETWORK, ZOONOES RESEAR-N01AI030055 · NIAID · WASHINGTON STATE UNIVERSITY · 2003 to 2003
–
NIAID NIH HHS N01 AI030055NIAID NIH HHS T32 AI007025
6 · The paper itself

Abstract

backgroundShiga toxin (Stx) are cardinal virulence factors of enterohemorrhagic E. coli O157:H7 (EHEC O157). The gene content and genomic insertion sites of Stx-associated bacteriophages differentiate clinical genotypes of EHEC O157 (CG, typical of clinical isolates) from bovine-biased genotypes (BBG, rarely identified among clinical isolates). This project was designed to identify bacteriophage-mediated differences that may affect the virulence of CG and BBG.

methodsStx-associated bacteriophage differences were identified by whole genome optical scans and characterized among >400 EHEC O157 clinical and cattle isolates by PCR.

resultsOptical restriction maps of BBG strains consistently differed from those of CG strains only in the chromosomal insertion sites of Stx2-associated bacteriophages. Multiplex PCRs (stx1, stx2a, and stx2c as well as Stx-associated bacteriophage-chromosomal insertion site junctions) revealed four CG and three BBG that accounted for >90% of isolates. All BBG contained stx2c and Stx2c-associated bacteriophage-sbcB junctions. All CG contained stx2a and Stx2a-associated bacteriophage junctions in wrbA or argW.

conclusionsPresence or absence of stx2a (or another product encoded by the Stx2a-associated bacteriophage) is a parsimonious explanation for differential virulence of BBG and CG, as reflected in the distributions of these genotypes in humans and in the cattle reservoir.

Indexed as

Escherichia coli O157Shiga ToxinShiga Toxin 2AnimalsBacteriophagesCattleEscherichia coli InfectionsHumansVirulenceShiga ToxinShiga Toxin 2

Identifiers

PMID23240045
PMCPMC3519850
OpenAlexW2052226373

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.