Evidence map›Paper›PMID 22760050›Full record

ArticleJournal of clinical microbiology2012

Multicenter evaluation of a sequence-based protocol for subtyping Shiga toxins and standardizing Stx nomenclature.

Flemming Scheutz, Louise D Teel, Lothar Beutin, Denis Piérard, Glenn Buvens, Helge Karch, Alexander Mellmann, Alfredo Caprioli, Rosangela Tozzoli, Stefano Morabito and 5 more

Open access · bronzeAbstract readEvaluation StudyMulticenter Study
In one paragraph

Article in Journal of clinical microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 427 papers.

0numbers the graph read from it
0cells of the map it votes in
427citing papers in PubMed
40.7field-weighted citation impact, top 1% 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

427 citing papers in PubMed, 818 citations in OpenAlex.

  1. Article
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  15. Closed genome sequences of 39 Shiga toxin-producingMicrobiology resource announcements · 2025
    Article
  16. First report ofASM case reports · 2025
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  18. Shiga toxin-producingMicrobiology and molecular biology reviews : MMBR · 2025
    Review
  19. Article
  20. Emerging hybrid shigatoxigenic and enteropathogenicClinical microbiology reviews · 2025
    Review

367 more citing papers are in PubMed but not listed here.

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

15 authors at 7 institutions in 5 countries.

Flemming ScheutzWHO Collaborating Centre for Reference and Research on Escherichia and Klebsiella, Unit of Foodborne Bacteria and Typing, Department of Microbiology and Infection Control, Statens Serum Institut, Copenhagen, Denmark. fsc@ssi.dk
Louise D Teel
Lothar Beutin
Denis Piérard
Glenn Buvens
Helge Karch
Alexander Mellmann
Alfredo Caprioli
Rosangela Tozzoli
Stefano Morabito
Nancy A Strockbine
Angela R Melton-Celsa
Maria Sanchez
Søren Persson
Alison D O'Brien
Uniformed Services University of the Health Sciences · USIstituto Superiore di Sanità · ITStatens Serum Institut · DKUniversitair Ziekenhuis Brussel · BEUniversity of Münster · DEFederal Institute for Risk Assessment · DENational Center for Emerging and Zoonotic Infectious Diseases · US

Funding

Pathogenicity of Shiga Toxin Producing E.coliR37AI020148 · NIAID · HENRY M. JACKSON FDN FOR THE ADV MIL/MED · PI O'BRIEN, ALISON DAVIS · 2008 to 2016
$3.8M
SHIGA-LIKE TOXIN OF ESCHERICHIA COLIR01AI020148 · NIAID · U.S. UNIFORMED SERVICES UNIV OF HLTH SCI · PI MELTON-CELSA, ANGELA · 1987 to 2017
$3.3M
SHIGA-LIKE TOXIN OF ESCHERICHIA COLIR22AI020148 · NIAID · U.S. UNIFORMED SERVICES UNIV OF HLTH SCI · PI O'BRIEN, ALISON DAVIS · 1985 to 1991
–
NIAID NIH HHS AI20148NIAID NIH HHS R01 AI020148NIAID NIH HHS R37 AI020148
6 · The paper itself

Abstract

When Shiga toxin-producing Escherichia coli (STEC) strains emerged as agents of human disease, two types of toxin were identified: Shiga toxin type 1 (Stx1) (almost identical to Shiga toxin produced by Shigella dysenteriae type 1) and the immunologically distinct type 2 (Stx2). Subsequently, numerous STEC strains have been characterized that express toxins with variations in amino acid sequence, some of which confer unique biological properties. These variants were grouped within the Stx1 or Stx2 type and often assigned names to indicate that they were not identical in sequence or phenotype to the main Stx1 or Stx2 type. A lack of specificity or consistency in toxin nomenclature has led to much confusion in the characterization of STEC strains. Because serious outcomes of infection have been attributed to certain Stx subtypes and less so with others, we sought to better define the toxin subtypes within the main Stx1 and Stx2 types. We compared the levels of relatedness of 285 valid sequence variants of Stx1 and Stx2 and identified common sequences characteristic of each of three Stx/Stx1 and seven Stx2 subtypes. A novel, simple PCR subtyping method was developed, independently tested on a battery of 48 prototypic STEC strains, and improved at six clinical and research centers to test the reproducibility, sensitivity, and specificity of the PCR. Using a consistent schema for nomenclature of the Stx toxins and stx genes by phylogenetic sequence-based relatedness of the holotoxin proteins, we developed a typing approach that should obviate the need to bioassay each newly described toxin and that predicts important biological characteristics.

Indexed as

Terminology as TopicGenotypeHumansPolymerase Chain ReactionReproducibility of ResultsSensitivity and SpecificityShiga-Toxigenic Escherichia coliShiga ToxinsShiga Toxins

Identifiers

PMID22760050
PMCPMC3421821
OpenAlexW2051567318

What OpenQuestion holds

Textmetadata
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.