Evidence map›Paper›PMID 23861946›Full record

ArticlePloS one2013

Iron status and Helicobacter pylori infection in symptomatic children: an international multi-centered study.

Dulciene Maria Magalhaes Queiroz, Paul R Harris, Ian R Sanderson, Henry J Windle, Marjorie M Walker, Andreia Maria Camargos Rocha, Gifone Aguiar Rocha, Simone Diniz Carvalho, Paulo Fernando Souto Bittencourt, Lucia Porto Fonseca de Castro and 4 more

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
7.6field-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

27 citing papers in PubMed, 83 citations in OpenAlex.

  1. Infection byHaematologica · 2024
    Article
  2. Journal of clinical medicine · 2022
    Review
  3. Article
  4. Children (Basel, Switzerland) · 2022
    Review
  5. Review
  6. Article
  7. Frontiers in pediatrics · 2022
    Article
  8. AsymptomaticNutrients · 2019
    Article
  9. Helicobacter pylori infection in children: an overview of diagnostic methods.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2019
    Review
  10. Article
  11. Article
  12. Article
  13. Epidemiological and Clinical-Pathological Aspects ofGastroenterology research and practice · 2018
    Article
  14. Relationship between β-Thalassemia minor andCaspian journal of internal medicine · 2018
    Article
  15. Current Status of the Third-LineGastroenterology research and practice · 2018
    Review
  16. Review
  17. Review
  18. Review
  19. Article
  20. Article
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

14 authors at 7 institutions in 4 countries.

Dulciene Maria Magalhaes QueirozLaboratory of Research in Bacteriology, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil. dqueiroz@medicina.ufmg.br
Paul R Harris
Ian R Sanderson
Henry J Windle
Marjorie M Walker
Andreia Maria Camargos Rocha
Gifone Aguiar Rocha
Simone Diniz Carvalho
Paulo Fernando Souto Bittencourt
Lucia Porto Fonseca de Castro
Andrea Villagrán
Carolina Serrano
Dermot Kelleher
Jean E Crabtree
Universidade Federal de Minas Gerais · BRPontificia Universidad Católica de Chile · CLImperial College London · GBQueen Mary University of London · GBSt. James's Hospital · IETrinity College Dublin · IEUniversity of Leeds · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveIron deficiency (ID) and iron deficiency anaemia (IDA) are global major public health problems, particularly in developing countries. Whilst an association between H. pylori infection and ID/IDA has been proposed in the literature, currently there is no consensus. We studied the effects of H. pylori infection on ID/IDA in a cohort of children undergoing upper gastrointestinal endoscopy for upper abdominal pain in two developing and one developed country.

methodsIn total 311 children (mean age 10.7±3.2 years) from Latin America--Belo Horizonte/Brazil (n = 125), Santiago/Chile (n = 105)--and London/UK (n = 81), were studied. Gastric and duodenal biopsies were obtained for evaluation of histology and H. pylori status and blood samples for parameters of ID/IDA.

resultsThe prevalence of H. pylori infection was 27.7% being significantly higher (p<0.001) in Latin America (35%) than in UK (7%). Multiple linear regression models revealed H. pylori infection as a significant predictor of low ferritin and haemoglobin concentrations in children from Latin-America. A negative correlation was observed between MCV (r = -0.26; p = 0.01) and MCH (r = -0.27; p = 0.01) values and the degree of antral chronic inflammation, and between MCH and the degree of corpus chronic (r = -0.29, p = 0.008) and active (r = -0.27, p = 0.002) inflammation.

conclusionsThis study demonstrates that H. pylori infection in children influences the serum ferritin and haemoglobin concentrations, markers of early depletion of iron stores and anaemia respectively.

Indexed as

Abdominal PainAdolescentAnemia, Iron-DeficiencyBiopsyBrazilChildChileDuodenoscopyDuodenumFemaleFerritinsGastric MucosaGastroscopyHelicobacter InfectionsHelicobacter pyloriHemoglobinsFerritinsHemoglobinsIron

Identifiers

PMID23861946
PMCPMC3701645
OpenAlexW2055374239

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.