Evidence map›Paper›PMID 26731111›Full record

ArticlePloS one2016

Porphyromonas gingivalis within Placental Villous Mesenchyme and Umbilical Cord Stroma Is Associated with Adverse Pregnancy Outcome.

Sizzle F Vanterpool, Jasper V Been, Michiel L Houben, Peter G J Nikkels, Ronald R De Krijger, Luc J I Zimmermann, Boris W Kramer, Ann Progulske-Fox, Leticia Reyes

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
5.5field-weighted citation impact, top 4% 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, 76 citations in OpenAlex.

  1. [Age-Related Changes in the Oral Microbiota].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2026
    Review
  2. Review
  3. Frontiers in immunology · 2026
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  4. Article
  5. International journal of molecular sciences · 2025
    Article
  6. Journal of dental research · 2025
    Article
  7. Article
  8. Observational
  9. Review
  10. [Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2023
    Article
  11. Review
  12. Review
  13. Article
  14. Review
  15. Association betweenFrontiers in cellular and infection microbiology · 2022
    Review
  16. Differential affinity chromatography reveals a link betweenFrontiers in cellular and infection microbiology · 2022
    Article
  17. Review
  18. Article
  19. Article
  20. 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 6 institutions in 2 countries.

Sizzle F VanterpoolDepartment of Pediatrics, Maastricht University Medical Center, Maastricht, the Netherlands.
Jasper V BeenDepartment of Pediatrics, Maastricht University Medical Center, Maastricht, the Netherlands.
Michiel L HoubenDepartment of Pediatrics, Wilhelmina Children's Hospital, University Medical Center Utrecht, Utrecht, the Netherlands.
Peter G J NikkelsDepartment of Pathology, University Medical Center Utrecht, Utrecht, the Netherlands.
Ronald R De KrijgerDepartment of Pathology, Erasmus University Medical Center, Rotterdam, the Netherlands.
Luc J I ZimmermannDepartment of Pediatrics, Maastricht University Medical Center, Maastricht, the Netherlands.
Boris W KramerDepartment of Pediatrics, Maastricht University Medical Center, Maastricht, the Netherlands.
Ann Progulske-FoxDepartment of Oral Biology, Center for Molecular Microbiology, University of Florida, Gainesville, Florida, United States of America.
Leticia ReyesDepartment of Oral Biology, Center for Molecular Microbiology, University of Florida, Gainesville, Florida, United States of America.
Maastricht University · NLErasmus MC · NLUniversity Medical Center Utrecht · NLUniversity of Florida · USUniversity of Wisconsin–Madison · USWilhelmina Children's Hospital · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Intrauterine presence of Porphyromonas gingivalis (Pg), a common oral pathobiont, is implicated in preterm birth. Our aim was to determine if the location of Pg within placental and/or umbilical cord sections was associated with a specific delivery diagnosis at preterm delivery (histologic chorioamnionitis, chorioamnionitis with funisitis, preeclampsia, and preeclampsia with HELLP-syndrome, small for gestational age). The prevalence and location of Pg within archived placental and umbilical cord specimens from preterm (25 to 32 weeks gestation) and term control cohorts were evaluated by immunofluorescent histology. Detection of Pg was performed blinded to pregnancy characteristics. Multivariate analyses were performed to evaluate independent effects of gestational age, being small for gestational age, specific preterm delivery diagnosis, antenatal steroids, and delivery mode, on the odds of having Pg in the preterm tissue. Within the preterm cohort, 49 of 97 (51%) placentas and 40 of 97 (41%) umbilical cord specimens were positive for Pg. Pg within the placenta was significantly associated with shorter gestation lengths (OR 0.63 (95%CI: 0.48-0.85; p = 0.002) per week) and delivery via caesarean section (OR 4.02 (95%CI: 1.15-14.04; p = 0.03), but not with histological chorioamnionitis or preeclampsia. However, the presence of Pg in the umbilical cord was significantly associated with preeclampsia: OR 6.73 (95%CI: 1.31-36.67; p = 0.02). In the term cohort, 2 of 35 (6%) placentas and no umbilical cord term specimens were positive for Pg. The location of Pg within the placenta was different between preterm and term groups in that Pg within the villous mesenchyme was only detected in the preterm cohort, whereas Pg associated with syncytiotrophoblasts was found in both preterm and term placentas. Taken together, our results suggest that the presence of Pg within the villous stroma or umbilical cord may be an important determinant in Pg-associated adverse pregnancy outcomes.

Indexed as

AdultChorioamnionitisFemaleHumansMesodermPlacentaPorphyromonas gingivalisPre-EclampsiaPregnancyPregnancy OutcomeStromal CellsUmbilical Cord

Identifiers

PMID26731111
PMCPMC4701427
OpenAlexW2225621370

What OpenQuestion holds

Textmetadata
LicenceCC0
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.