Evidence map›Paper›PMID 12933859›Full record

ArticleInfection and immunity2003

Porphyromonas gingivalis infection during pregnancy increases maternal tumor necrosis factor alpha, suppresses maternal interleukin-10, and enhances fetal growth restriction and resorption in mice.

Dongming Lin, Mary Alice Smith, Catherine Champagne, John Elter, James Beck, Steven Offenbacher

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
6.1field-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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 127 citations in OpenAlex.

  1. [Pathways and Mechanisms of Periodontitis Contributing to Adverse Pregnancy Outcomes].Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition · 2023
    Pooled it
  2. Journal of dental research · 2025
    Article
  3. Article
  4. Article
  5. Interaction between apical periodontitis and systemic disease (Review).International journal of molecular medicine · 2023
    Review
  6. Article
  7. Pathogens (Basel, Switzerland) · 2020
    Review
  8. Placental colonization with periodontal pathogens: the potential missing link.American journal of obstetrics and gynecology · 2019
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Microglia and Autism Spectrum Disorder: Overview of Current Evidence and Novel Immunomodulatory Treatment Options.Clinical psychopharmacology and neuroscience : the official scientific journal of the Korean College of Neuropsychopharmacology · 2018
    Review
  14. Article
  15. Journal of oral microbiology · 2018
    Review
  16. Article
  17. Article
  18. Review
  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

6 authors at 2 institutions in 1 country.

Dongming LinCenter for Oral and Systemic Diseases, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
Mary Alice Smith
Catherine Champagne
John Elter
James Beck
Steven Offenbacher
Comprehensive Clinical Research · USUniversity of Georgia · US

Funding

PERIODONTITIS AND PRETERM LOW BIRTH WEIGHTR01DE012453 · NIDCR · UNIVERSITY OF NORTH CAROLINA CHAPEL HILL · PI OFFENBACHER, STEVEN NMN · 1997 to 2001
$1.6M
NIDCR NIH HHS R0-1 DE 12453
6 · The paper itself

Abstract

Epidemiological studies have shown a potential association between maternal periodontitis and pregnancy complications. We used a pregnant murine model to study the effect of infection with the periodontal pathogen Porphyromonas gingivalis on pregnancy outcomes. Female BALB/c mice were inoculated with heat-killed P. gingivalis (10(9) CFU) in a subcutaneous chamber and mated 2 weeks later. At gestation day (GD) 7.5, mice were challenged with live P. gingivalis (10(7) CFU) (n = 20) or broth (control; n = 8) and sacrificed at GD 16.5. Fetal growth restriction (FGR, <0.46 g) was defined as fetuses with weights 2 standard deviations (SD) smaller than controls (0.56 +/- 0.05 g [mean +/- SD]). Among the 20 challenged mice, 8 had both normal-weight (0.51 +/- 0.11 g) and FGR (0.34 +/- 0.1 g) fetuses within the same litter. All other challenged dams had normal-weight fetuses (0.57 +/- 0.04 g). Maternal liver, uterus, and spleen samples were examined for P. gingivalis DNA using a PCR technique. Of the eight challenged mice with FGR fetuses, three had PCR signals for P. gingivalis in liver and uterus, but not in the spleen. Liver, uterus, and spleen were negative for P. gingivalis DNA among all other challenged and control mice. In serum of dams with FGR fetuses, tumor necrosis factor alpha levels were elevated significantly, while interleukin-10 levels were significantly reduced compared to levels in dams with normal fetuses. P. gingivalis-specific serum immunoglobulin G levels were significantly elevated in dams with FGR fetuses compared to dams without any FGR fetuses. These data demonstrate that P. gingivalis-induced murine FGR is associated with systemic dissemination of the organism and activated maternal immune and inflammatory responses.

Indexed as

Porphyromonas gingivalisAnimalsAntibodies, BacterialBacteroidaceae InfectionsBase SequenceDisease Models, AnimalDNA, BacterialFemaleFetal Growth RetardationFetal ResorptionHumansImmunoglobulin GInterleukin-10LiverMaternal-Fetal ExchangeMiceAntibodies, BacterialDNA, BacterialImmunoglobulin GInterleukin-10Tumor Necrosis Factor-alpha

Identifiers

PMID12933859
PMCPMC187372
OpenAlexW2160222418

What OpenQuestion holds

Textmetadata
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.