Evidence map›Paper›PMID 17687011›Full record

ArticleJournal of clinical microbiology2007

Comparative analyses of phenotypic and genotypic methods for detection of enterotoxigenic Escherichia coli toxins and colonization factors.

A Sjöling, G Wiklund, S J Savarino, D I Cohen, A-M Svennerholm

Open access · greenAbstract readComparative Study
In one paragraph

Article in Journal of clinical microbiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
7.4field-weighted citation impact, top 2% 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

67 citing papers in PubMed, 133 citations in OpenAlex.

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  10. Efficacy of an EnterotoxigenicMicroorganisms · 2023
    Article
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  12. Increased sensitivity of enterotoxigenicBiotechnology reports (Amsterdam, Netherlands) · 2021
    Article
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7 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

5 authors at 3 institutions in 3 countries.

A SjölingDepartment of Microbiology and Immunology, Institute of Biomedicine, Box 435, 405 30 Göteborg, Sweden. asa.sjoling@microbio.gu.se
G Wiklund
S J Savarino
D I Cohen
A-M Svennerholm
University of Gothenburg · SENaval Medical Research Command · USTel Aviv University · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Enterotoxigenic Escherichia coli (ETEC) is one of the main causes of childhood diarrhea in developing countries and in travelers. However, this pathogen has often not been reported in surveys of diarrheal pathogens, due to lack of simple standardized methods to detect ETEC in many laboratories. ETEC expresses one or both of two different enterotoxin subtypes: heat-stable toxins, a heat-labile toxin (LT), and more than 22 different colonization factors (CFs) that mediate adherence to the intestinal cell wall. Here we compare established phenotypic and genotypic detection methods and newly developed PCR detection methods with respect to sensitivity, specificity, positive predictive value, and ease of performance. The methods include GM1-enzyme-linked immunosorbent assay and dot blot techniques using specific monoclonal antibodies (MAbs) for phenotypic detection of the toxins and CFs, respectively, as well as different PCR and DNA/DNA hybridization techniques, including new PCR assays, for genotypic identification of the toxin and CF genes, respectively. We found very good general agreement in results derived from genotypic and phenotypic methods. In a few strains, LT and CFs were identified genetically but not phenotypically. Based on our analyses, we recommend initial screening for ETEC in clinical samples by multiplex toxin gene PCR. Toxin-positive strains may then be analyzed by dot blot tests for detection of the CFs expressed on the bacterial surface and by PCR for determination of additional CFs for which MAbs are currently lacking as well as for strains that harbor silent CF genes.

Indexed as

Bacterial ToxinsEnterotoxinsEnzyme-Linked Immunosorbent AssayEscherichia coliEscherichia coli ProteinsFimbriae ProteinsGenotypeNucleic Acid HybridizationPhenotypePolymerase Chain ReactionBacterial Toxinscolonization factor antigensEnterotoxinsEscherichia coli ProteinsFimbriae Proteinsheat-labile enterotoxin, E coliheat stable toxin (E coli)

Identifiers

PMID17687011
PMCPMC2045327
OpenAlexW2005991718

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.