Pre-existing periodontitis exacerbates experimental arthritis in a mouse model

Melissa D. Cantley, David R. Haynes, Victor Marino, P. Mark Bartold

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)


Aims: Previous studies have shown a higher incidence of alveolar bone loss in patients with rheumatoid arthritis (RA) and that patients with periodontitis are at a greater risk of developing RA. The aim of this study was to develop an animal model to assess the relationship between pre-existing periodontitis and experimental arthritis (EA). Methods: Periodontitis was first induced in mice by oral gavage with Porphyromonas gingivalis followed by EA using the collagen antibody-induced arthritis model. These animals were compared with animals with periodontitis alone, EA alone and no disease (controls). Visual changes in paw swelling were assessed to determine clinical development of EA. Alveolar bone and joint changes were assessed using micro-CT, histological analyses and immunohistochemistry. Serum levels of C-reactive protein were used to monitor systemic inflammation. Results: Mice with pre-existing periodontitis developed more severe arthritis, which developed at a faster rate. Mice with periodontitis only also showed evidence of loss of bone within the radiocarpal joint. There was also evidence of alveolar bone loss in mice with EA alone. Conclusions: The results of this study indicate that pre-existing periodontitis exacerbated experimental arthritis in a mouse model.

Original languageEnglish
Pages (from-to)532-541
Number of pages10
JournalJournal of Clinical Periodontology
Issue number6
Publication statusPublished or Issued - Jun 2011
Externally publishedYes


  • P. gingivalis
  • bone
  • chronic inflammation
  • periodontal disease
  • rheumatoid arthritis

ASJC Scopus subject areas

  • Periodontics

Cite this