Evidence map›Paper›PMID 19797469›Full record

ArticleJournal of medical microbiology2010

Allelic variability of critical virulence genes (eae, bfpA and perA) in typical and atypical enteropathogenic Escherichia coli in Peruvian children.

C A Contreras, T J Ochoa, D W Lacher, C DebRoy, A Navarro, M Talledo, M S Donnenberg, L Ecker, A I Gil, C F Lanata and 1 more

Open access · greenAbstract read
In one paragraph

Article in Journal of medical microbiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.7field-weighted citation impact, top 18% 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

13 citing papers in PubMed, 39 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Evaluation of the frequency ofIranian journal of microbiology · 2022
    Article
  5. Genomic Characterization ofAntibiotics (Basel, Switzerland) · 2020
    Article
  6. Diarrheagenic Escherichia coli.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2016
    Review
  7. Article
  8. Article
  9. Enteropathogenic Escherichia coli: foe or innocent bystander?Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2015
    Review
  10. Article
  11. Article
  12. Quantitative real-time polymerase chain reaction for enteropathogenic Escherichia coli: a tool for investigation of asymptomatic versus symptomatic infections.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2011
    Article
  13. Enteropathogenic escherichia coli infection in children.Current opinion in infectious diseases · 2011
    Review
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

11 authors at 8 institutions in 4 countries.

C A ContrerasInstituto de Medicina Tropical 'Alexander von Humboldt', Universidad Peruana Cayetano Heredia, Lima, Peru.
T J OchoaUniversity of Texas School of Public Health, Houston, USA.
D W LacherUS Food and Drug Administration, Laurel, Maryland, USA.
C DebRoyE. coli Reference Center, Department of Veterinary and Biomedical Sciences, Pennsylvania State University, Pennsylvania, USA.
A NavarroDepartamento de Salud Pública, Facultad de Medicina, Universidad Nacional Autónoma de Mexico, Mexico.
M TalledoDepartment of Medical Genetics, University of Antwerp, Antwerp, Belgium.
M S DonnenbergUniversity of Maryland School of Medicine, USA.
L EckerInstituto de Investigación Nutricional, Lima, Peru.
A I GilInstituto de Investigación Nutricional, Lima, Peru.
C F LanataUniversidad Peruana de Ciencias Aplicadas, Lima, Peru.
T G ClearyUniversity of Texas School of Public Health, Houston, USA.
Universidad Peruana Cayetano Heredia · PEInstituto de Investigación Nutricional · PEPennsylvania State University · USPeruvian University of Applied Sciences · PEThe University of Texas Health Science Center at Houston · USUnited States Food and Drug Administration · USUniversidad Nacional Autónoma de México · MXUniversity of Maryland, Baltimore · US

Funding

The eae Gene Cluster of Enteropathogenic E.coliR01AI032074 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI DONNENBERG, MICHAEL S · 1997 to 2012
$3.7M
MOLECULAR BASIS OF LOCALIZED ADHERENCE IN E. COLIR01AI037606 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI DONNENBERG, MICHAEL S · 1995 to 2009
$2.5M
Randomonized controlled trial-lactoferrin prevention of diarrhea in childrenR01HD051716 · NICHD · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI CLEARY, THOMAS GEORGE · 2007 to 2010
$960k
Role of virulence heterogeneity in acute and presistent EPEC diarrheaK01TW007405 · FIC · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI OCHOA, THERESA J · 2006 to 2009
$433k
FIC NIH HHS 1K01TW007405FIC NIH HHS K01 TW007405NIAID NIH HHS R01 AI032074NIAID NIH HHS R01 AI037606NIAID NIH HHS R01 AI-37606NICHD NIH HHS R01 HD051716NICHD NIH HHS R01-HD051716
6 · The paper itself

Abstract

Enteropathogenic Escherichia coli (EPEC) is a leading cause of infantile diarrhoea in developing countries. The aim of this study was to describe the allelic diversity of critical EPEC virulence genes and their association with clinical characteristics. One hundred and twenty EPEC strains isolated from a cohort diarrhoea study in Peruvian children were characterized for the allele type of eae (intimin), bfpA (bundlin pilin protein of bundle-forming pilus) and perA (plasmid encoded regulator) genes by PCR-RFLP. Atypical EPEC strains (eae+, bfp-) were the most common pathotype in diarrhoea (54/74, 73 %) and control samples from children without diarrhoea (40/46, 87 %). Overall, there were 13 eae alleles; the most common were beta (34/120, 28 %), theta (24/120, 20 %), kappa (14/120, 12 %) and mu (8/120, 7 %). There were five bfpA alleles; the most common were beta1/7 (10/26), alpha3 (7/26) and beta5 (3/26). There were three perA alleles: beta (8/16), alpha (7/16) and gamma (1/16). The strains belonged to 36 distinct serogroups; O55 was the most frequent. The gamma-intimin allele was more frequently found in diarrhoea episodes of longer duration (>7 days) than those of shorter duration (3/26, 12 % vs 0/48, 0 %, P<0.05). The kappa-intimin allele had the highest clinical severity score in comparison with other alleles (P<0.05). In Peruvian children, the virulence genes of EPEC strains are highly variable. Further studies are needed to evaluate additional virulence markers to determine whether relationships exist between specific variants and clinical features of disease.

Indexed as

Adhesins, BacterialChildCohort StudiesDiarrheaEnteropathogenic Escherichia coliEscherichia coli InfectionsEscherichia coli ProteinsFimbriae ProteinsHumansPeruRepressor ProteinsVirulenceAdhesins, BacterialBfpA protein, E colibfpT protein, E colieaeA protein, E coliEscherichia coli ProteinsFimbriae ProteinsRepressor Proteins

Identifiers

PMID19797469
PMCPMC2823808
OpenAlexW2118465735

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Registered trials

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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.