Evidence map›Paper›PMID 17302731›Full record

ArticleClinical and experimental immunology2007

Allergic sensitization and microbial load--a comparison between Finland and Russian Karelia.

T Seiskari, A Kondrashova, H Viskari, M Kaila, A-M Haapala, J Aittoniemi, M Virta, M Hurme, R Uibo, M Knip and 2 more

Open access · greenAbstract readComparative StudyMulticenter Study
In one paragraph

Article in Clinical and experimental immunology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 2 pooled it
4.1field-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

39 citing papers in PubMed, 2 syntheses or guidelines pooled it, 122 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Review
  6. Article
  7. Article
  8. Gluten-degrading bacteria: availability and applications.Applied microbiology and biotechnology · 2021
    Review
  9. Review
  10. Article
  11. Review
  12. Exposure to sewage water and the development of allergic manifestations in Finnish children.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2019
    Article
  13. Observational
  14. Article
  15. Pathogen infection and autoimmune disease.Clinical and experimental immunology · 2019
    Article
  16. Article
  17. The atopic march: Critical evidence and clinical relevance.Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2018
    Review
  18. Article
  19. Review
  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

12 authors at 3 institutions in 3 countries.

T SeiskariDepartment of Virology, University of Tampere, Finland. tapio.seiskari@uta.fi
A Kondrashova
H Viskari
M Kaila
A-M Haapala
J Aittoniemi
M Virta
M Hurme
R Uibo
M Knip
H Hyöty
EPIVIR study group
Tampere University · FIUniversity of Helsinki · FIPirkanmaa Hospital District · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Epidemiological data have indicated that some infections are associated with a low risk of allergic diseases, thus supporting the idea (hygiene hypothesis) that the microbial load is an important environmental factor conferring protection against the development of allergies. We set out to test the hygiene hypothesis in a unique epidemiological setting in two socio-economically and culturally markedly different, although genetically related, populations living in geographically adjacent areas. The study cohorts included 266 schoolchildren from the Karelian Republic in Russia and 266 schoolchildren from Finland. The levels of total IgE and allergen-specific IgE for birch, cat and egg albumen were measured. Microbial antibodies were analysed against enteroviruses (coxsackievirus B4), hepatitis A virus, Helicobacter pylori and Toxoplasma gondii. Although total IgE level was higher in Russian Karelian children compared to their Finnish peers, the prevalence of allergen-specific IgE was lower among Russian Karelian children. The prevalence of microbial antibodies was, in turn, significantly more frequent in the Karelian children, reflecting the conspicuous difference in socio-economic background factors. Microbial infections were associated with lower risk of allergic sensitization in Russian Karelian children, enterovirus showing the strongest protective effect in a multivariate model. The present findings support the idea that exposure to certain infections, particularly in childhood, may protect from the development of atopy. Enterovirus infections represent a new candidate to the list of markers of such a protective environment. However, possible causal relationship needs to be confirmed in further studies.

Indexed as

AdolescentAllergensAnimalsAntibodies, BacterialAntibodies, ProtozoanAntibodies, ViralBacteriaBetulaCatsChildEnterovirus B, HumanFemaleFinlandHelicobacter pyloriHepatitis A virusHumansAllergensAntibodies, BacterialAntibodies, ProtozoanAntibodies, ViralImmunoglobulin EOvalbumin

Identifiers

PMID17302731
PMCPMC1868862
OpenAlexW1906963410

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.