Evidence map›Paper›PMID 26403779›Full record

ArticleScientific reports2015

The peptidylarginine deiminase gene is a conserved feature of Porphyromonas gingivalis.

Giorgio Gabarrini, Menke de Smit, Johanna Westra, Elisabeth Brouwer, Arjan Vissink, Kai Zhou, John W A Rossen, Tim Stobernack, Jan Maarten van Dijl, Arie Jan van Winkelhoff

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
5.4field-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

43 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.

  1. Pooled it
  2. Pathogenicity ofFrontiers in cellular and infection microbiology · 2026
    Article
  3. Review
  4. Virulence diversity amongJournal of oral microbiology · 2026
    Review
  5. Review
  6. Polymorphic Variants of Peptidylarginine Deiminase Gene fromInternational journal of molecular sciences · 2025
    Article
  7. Review
  8. Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Review
  14. International journal of molecular sciences · 2023
    Article
  15. Article
  16. Phylogenomic analysis of theFrontiers in microbiology · 2023
    Article
  17. Review
  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

10 authors at 2 institutions in 1 country.

Giorgio GabarriniCenter for Dentistry and Oral Hygiene, University of Groningen and University Medical Center Groningen, the Netherlands.
Menke de SmitCenter for Dentistry and Oral Hygiene, University of Groningen and University Medical Center Groningen, the Netherlands.
Johanna WestraDepartment of Rheumatology and Clinical Immunology, University of Groningen and University Medical Center Groningen, the Netherlands.
Elisabeth BrouwerDepartment of Rheumatology and Clinical Immunology, University of Groningen and University Medical Center Groningen, the Netherlands.
Arjan VissinkDepartment of Oral and Maxillofacial Surgery, University of Groningen and University Medical Center Groningen, the Netherlands.
Kai ZhouDepartment of Medical Microbiology, University of Groningen, University Medical Center Groningen, the Netherlands.
John W A RossenDepartment of Medical Microbiology, University of Groningen, University Medical Center Groningen, the Netherlands.
Tim StobernackDepartment of Medical Microbiology, University of Groningen, University Medical Center Groningen, the Netherlands.
Jan Maarten van DijlDepartment of Medical Microbiology, University of Groningen, University Medical Center Groningen, the Netherlands.
Arie Jan van WinkelhoffCenter for Dentistry and Oral Hygiene, University of Groningen and University Medical Center Groningen, the Netherlands.
University of Groningen · NLUniversity Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Periodontitis is an infective process that ultimately leads to destruction of the soft and hard tissues that support the teeth (the periodontium). Periodontitis has been proposed as a candidate risk factor for development of the autoimmune disease rheumatoid arthritis (RA). Porphyromonas gingivalis, a major periodontal pathogen, is the only known prokaryote expressing a peptidyl arginine deiminase (PAD) enzyme necessary for protein citrullination. Antibodies to citrullinated proteins (anti-citrullinated protein antibodies, ACPA) are highly specific for RA and precede disease onset. Objective of this study was to assess P. gingivalis PAD (PPAD) gene expression and citrullination patterns in representative samples of P. gingivalis clinical isolates derived from periodontitis patients with and without RA and in related microbes of the Porphyromonas genus. Our findings indicate that PPAD is omnipresent in P. gingivalis, but absent in related species. No significant differences were found in the composition and expression of the PPAD gene of P. gingivalis regardless of the presence of RA or periodontal disease phenotypes. From this study it can be concluded that if P. gingivalis plays a role in RA, it is unlikely to originate from a variation in PPAD gene expression.

Indexed as

Conserved SequenceAdultAgedAmino Acid SubstitutionArthritis, RheumatoidBacteroidaceae InfectionsFemaleHumansHydrolasesMaleMiddle AgedPeriodontitisPorphyromonas gingivalisProtein-Arginine DeiminasesSequence Analysis, DNAHydrolasesProtein-Arginine Deiminases

Identifiers

PMID26403779
PMCPMC4585897
OpenAlexW2404222461

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.