Evidence map›Paper›PMID 31924800›Full record

ArticleNature communications2020

Cervical epithelial damage promotes Ureaplasma parvum ascending infection, intrauterine inflammation and preterm birth induction in mice.

Ioannis Pavlidis, Owen B Spiller, Gabriella Sammut Demarco, Heather MacPherson, Sarah E M Howie, Jane E Norman, Sarah J Stock

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 2 pooled it
7.7field-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

48 citing papers in PubMed, 2 syntheses or guidelines pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
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  6. Article
  7. Detection ofFrontiers in cellular and infection microbiology · 2025
    Article
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  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Prevalence of Ureaplasma species among patients at a tertiary hospital in China: a 10-year retrospective study from 2013 to 2022.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2023
    Article
  18. Article
  19. Impact of bisphenol A on cell viability and inflammatory cytokine production in human cervical epithelial cells.American journal of reproductive immunology (New York, N.Y. : 1989) · 2023
    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

7 authors at 4 institutions in 1 country.

Ioannis PavlidisTommy's Centre for Maternal and Fetal Health at the MRC Centre for Reproductive Health, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Cresent, Edinburgh, EH16 4TJ, UK. Ioannis.Pavlidis@ed.ac.uk.
Owen B SpillerDivision of Infection and Immunity, School of Medicine, Cardiff University, 6th floor University Hospital of Wales, Cardiff, CF14 4XN, UK. SpillerB@cardiff.ac.uk.ORCID http://orcid.org/0000-0002-9117-6911
Gabriella Sammut DemarcoTommy's Centre for Maternal and Fetal Health at the MRC Centre for Reproductive Health, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Cresent, Edinburgh, EH16 4TJ, UK.
Heather MacPhersonTommy's Centre for Maternal and Fetal Health at the MRC Centre for Reproductive Health, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Cresent, Edinburgh, EH16 4TJ, UK.
Sarah E M HowieMRC Centre for Inflammation Research, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Cresent, Edinburgh, EH16 4TJ, UK.ORCID http://orcid.org/0000-0001-7291-3499
Jane E NormanFaculty of Health Sciences, University of Bristol, 5 Tyndall avenue, Bristol, BS8 1UD, UK.
Sarah J StockTommy's Centre for Maternal and Fetal Health at the MRC Centre for Reproductive Health, Queen's Medical Research Institute, University of Edinburgh, 47 Little France Cresent, Edinburgh, EH16 4TJ, UK. Sarah.stock@ed.ac.uk.ORCID http://orcid.org/0000-0003-4308-856X
MRC Centre for Reproductive Health · GBQueen's Medical Centre · GBUniversity Hospital of Wales · GBUniversity of Bristol · GB

Funding

Medical Research Council MR/N022556/1Wellcome TrustWellcome Trust 209560
6 · The paper itself

Abstract

Around 40% of preterm births are attributed to ascending intrauterine infection, and Ureaplasma parvum (UP) is commonly isolated in these cases. Here we present a mouse model of ascending UP infection that resembles human disease, using vaginal inoculation combined with mild cervical injury induced by a common spermicide (Nonoxynol-9, as a surrogate for any mechanism of cervical epithelial damage). We measure bacterial load in a non-invasive manner using a luciferase-expressing UP strain, and post-mortem by qPCR and bacterial titration. Cervical exposure to Nonoxynol-9, 24 h pre-inoculation, facilitates intrauterine UP infection, upregulates pro-inflammatory cytokines, and increases preterm birth rates from 13 to 28%. Our results highlight the crucial role of the cervical epithelium as a barrier against ascending infection. In addition, we expect the mouse model will facilitate further research on the potential links between UP infection and preterm birth.

Indexed as

Pregnancy Complications, InfectiousAnimalsCell ProliferationCervix UteriCytokinesDisease Models, AnimalFemaleHumansInfant, NewbornInflammationMiceMice, Inbred C57BLNonoxynolPregnancyUreaplasmaCytokinesNonoxynol

Identifiers

PMID31924800
PMCPMC6954262
OpenAlexW2999843267

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.