Evidence map›Paper›PMID 35074009›Full record

ArticleMicrobiome2022

Enhanced IgA coating of bacteria in women with Lactobacillus crispatus-dominated vaginal microbiota.

Annelot C Breedveld, Heleen J Schuster, Robin van Houdt, Rebecca C Painter, Reina E Mebius, Charlotte van der Veer, Sylvia M Bruisten, Paul H M Savelkoul, Marjolein van Egmond

Open access · goldAbstract readVideo-Audio Media
In one paragraph

Article in Microbiome, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

18 citing papers in PubMed, 26 citations in OpenAlex.

  1. Trial
  2. Review
  3. HIV Transmission and Immunology of the Male Reproductive Tract.American journal of reproductive immunology (New York, N.Y. : 1989) · 2026
    Review
  4. The Gut-Vagina Axis.Microorganisms · 2026
    Review
  5. Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. IgA and the gut-vagina axis.Frontiers in immunology · 2025
    Article
  11. Article
  12. Article
  13. Review
  14. Biomolecules · 2024
    Article
  15. Review
  16. Article
  17. Female reproductive tract-organ axes.Frontiers in immunology · 2023
    Review
  18. 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

9 authors at 4 institutions in 2 countries.

Annelot C Breedveld *Department of Molecular Cell Biology and Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, 1081 HV, The Netherlands.
Heleen J Schuster *Department of Medical Microbiology and Infection Control, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands. h.schuster@amsterdamumc.nl.ORCID 0000-0002-2230-0261
Robin van HoudtDepartment of Medical Microbiology and Infection Control, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Rebecca C PainterDepartment of Obstetrics and Gynecology, Amsterdam Reproduction and Development Institute, Amsterdam UMC, Amsterdam, University of Amsterdam, Meibergdreef 9, Amsterdam, 1105 AZ, The Netherlands.
Reina E MebiusDepartment of Molecular Cell Biology and Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, 1081 HV, The Netherlands.
Charlotte van der VeerDepartment of Infectious Diseases, Amsterdam Infection and Immunity Institute, Public Health Service of Amsterdam (GGD), Nieuwe Achtergracht 100, Amsterdam, 1018 WT, The Netherlands.
Sylvia M BruistenDepartment of Medical Microbiology and Infection Control, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Paul H M SavelkoulDepartment of Medical Microbiology and Infection Control, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
Marjolein van EgmondDepartment of Molecular Cell Biology and Immunology, Amsterdam Infection and Immunity Institute, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, Amsterdam, 1081 HV, The Netherlands.
Amsterdam University Medical Centers · NLGGD Amsterdam · NLAmsterdam Neuroscience · NLMaastricht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundImmunoglobulin A (IgA) plays an important role in maintaining a healthy intestinal microbiome, but little is known about the interaction between local immunoglobulins and the vaginal microbiome. We assessed immunoglobulins (unbound and bound to bacteria), their association with vaginal microbiota composition and the changes over time in 25 healthy women of reproductive age.

resultsIn both Lactobacillus crispatus-dominated and non-L. crispatus-dominated microbiota, IgA and IgG (unbound and bound to bacteria) were higher during menses (T = 1) compared to day 7‑11 (T = 2) and day 17‑25 (T = 3) after menses onset. The majority of vaginal bacteria are coated with IgA and/or IgG. Women with L. crispatus-dominated microbiota have increased IgA coating of vaginal bacteria compared to women with other microbiota compositions, but contained less IgA per bacterium. Presence of a dominantly IgA-coated population at T = 2 and/or T = 3 was also strongly associated with L. crispatus-dominated microbiota. In women with non-L. crispatus-dominated microbiota, more bacteria were uncoated. Unbound IgA, unbound IgG, and bound IgG levels were not associated with microbiota composition.

conclusionsIn conclusion, L. crispatus-dominated vaginal microbiota have higher levels of bacterial IgA coating compared to non-L. crispatus-dominated vaginal microbiota. Similar to its regulating function in the intestinal tract, we hypothesize that IgA is involved in maintaining L. crispatus-dominated microbiota in the female genital tract. This may play a role in L. crispatus-associated health benefits. Video abstract.

Indexed as

Lactobacillus crispatusMicrobiotaBacteriaFemaleHumansImmunoglobulin AVaginaImmunoglobulin A

Identifiers

PMID35074009
PMCPMC8787895
OpenAlexW4207003086

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.