Evidence map›Paper›PMID 22563329›Full record

ArticleFrontiers in immunology2012

Functional flexibility of intestinal IgA - broadening the fine line.

Emma Slack, Maria Luisa Balmer, Jörg H Fritz, Siegfried Hapfelmeier

Abstract read
In one paragraph

Article in Frontiers in immunology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
–field-weighted citation impact
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

61 citing papers in PubMed.

  1. Article
  2. Human Blood IgAEuropean journal of immunology · 2026
    Article
  3. Article
  4. Profiling of Anti-glycan IgA and IgG in Oral Fluid Using a Glycan Microarray.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Impact of maternalFrontiers in immunology · 2024
    Article
  10. Article
  11. Article
  12. Review
  13. The IgA of hares (Frontiers in immunology · 2023
    Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Review
  20. IgA Vasculitis: Etiology, Treatment, Biomarkers and Epigenetic Changes.International journal of molecular sciences · 2021
    Review

1 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

4 authors.

Emma SlackInstitute for Microbiology, Eidgenössische Technische Hochschule Zurich Zurich, Switzerland.
Maria Luisa Balmer
Jörg H Fritz
Siegfried Hapfelmeier

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Intestinal bacteria outnumber our own human cells in conditions of both health and disease. It has long been recognized that secretory antibody, particularly IgA, is produced in response to these microbes and hypothesized that this must play an important role in defining the relationship between a host and its intestinal microbes. However, the exact role of IgA and the mechanisms by which IgA can act are only beginning to be understood. In this review we attempt to unravel the complex interaction between so-called "natural," "primitive" (T-cell-independent), and "classical" IgA responses, the nature of the intestinal microbiota/intestinal pathogens and the highly flexible dynamic homeostasis of the mucosal immune system. Such an analysis reveals that low-affinity IgA is sufficient to protect the host from excess mucosal immune activation induced by harmless commensal microbes. However, affinity-maturation of "classical" IgA is essential to provide protection from more invasive commensal species such as segmented filamentous bacteria and from true pathogens such as Salmonellatyphimurium. Thus a correlation is revealed between "sophistication" of the IgA response and aggressiveness of the challenge. A second emerging theme is that more-invasive species take advantage of host inflammatory mechanisms to more successfully compete with the resident microbiota. In many cases, the function of IgA may be to limit such inflammatory responses, either directly by coagulating or inhibiting virulence of bacteria before they can interact with the host or by modulating immune signaling induced by host recognition. Therefore IgA appears to provide an added layer of robustness in the intestinal ecosystem, promoting "commensal-like" behavior of its residents.

Indexed as

adaptive immunityIgAinnate immunitymicrobiotamucosal immunologymucosal infectionnatural antibody

Identifiers

PMID22563329
PMCPMC3342566

What OpenQuestion holds

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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.