Evidence map›Paper›PMID 33193302›Full record

ReviewFrontiers in immunology2020

Recent Insights on the Maternal Microbiota: Impact on Pregnancy Outcomes.

Nicoletta Di Simone, Amparo Santamaria Ortiz, Monia Specchia, Chiara Tersigni, Paola Villa, Antonio Gasbarrini, Giovanni Scambia, Silvia D'Ippolito

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in immunology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 94 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
94citing papers in PubMed, 4 pooled it
5.4field-weighted citation impact, top 3% 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

94 citing papers in PubMed, 4 syntheses or guidelines pooled it, 137 citations in OpenAlex.

  1. Pooled it
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  4. Pooled it
  5. Trial
  6. Trial
  7. Review
  8. Review
  9. Article
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  11. Article
  12. Innate Immunity and Microbial Recognition in Reproduction: From Barrier Defense to Maternal-Fetal Tolerance.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Review
  13. Review
  14. Review
  15. Article
  16. Gut microbiota and short-chain fatty acids in pregnant women with group BFrontiers in cellular and infection microbiology · 2026
    Article
  17. Association of maternal gut microbiota with prenatal depression and the potential mediation effect by plasma tryptophan.Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2025
    Article
  18. Review
  19. Review
  20. Review

34 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

8 authors at 2 institutions in 2 countries.

Nicoletta Di SimoneDipartimento di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, Rome, Italy.
Amparo Santamaria OrtizDepartment of Hematology, University Hospital Vinalopo-Torrevieja, Alicante, Spain.
Monia SpecchiaDipartimento di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, Rome, Italy.
Chiara TersigniDipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy.
Paola VillaDipartimento di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, Rome, Italy.
Antonio GasbarriniDipartimento di Scienze Gastroenterologiche, Endocrino-Metaboliche e Nefro-Urologiche, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy.
Giovanni ScambiaDipartimento di Scienze della Vita e Sanità Pubblica, Università Cattolica del Sacro Cuore, Rome, Italy.
Silvia D'IppolitoDipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A. Gemelli Istituto di Ricovero e Cura a Carattere Scientifico, Rome, Italy.
Università Cattolica del Sacro Cuore · ITHospital Universitario del Vinalopó · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hormonal changes during and after pregnancy are linked with modifications in the maternal microbiota. We describe the importance of the maternal microbiota in pregnancy and examine whether changes in maternal microbiotic composition at different body sites (gut, vagina, endometrium) are associated with pregnancy complications. We analyze the likely interactions between microbiota and the immune system. During pregnancy, the gastrointestinal (gut) microbiota undergoes profound changes that lead to an increase in lactic acid-producing bacteria and a reduction in butyrate-producing bacteria. The meaning of such changes needs clarification. Additionally, several studies have indicated a possible involvement of the maternal gut microbiota in autoimmune and lifelong diseases. The human vagina has its own microbiota, and changes in vaginal microbiota are related to several pregnancy-related complications. Recent studies show reduced lactobacilli, increased bacterial diversity, and low vaginal levels of beta-defensin 2 in women with preterm births. In contrast, early and healthy pregnancies are characterized by low diversity and low numbers of bacterial communities dominated by

Indexed as

Premature BirthVaginaFemaleGastrointestinal MicrobiomeHumansLactobacillusPregnancyendometriumgutimmunityinflammasomemicrobiotapregnancyvagina

Identifiers

PMID33193302
PMCPMC7645041
OpenAlexW3094516591

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.