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  1. Elevated serum rheumatoid factor, anti-citrullinated protein antibodies and active rheumatoid arthritis disease are not associated with chronic periodontitis
    Che Rahim MJ, Wan Mohamad WM, Saddki N, Taib H, Wan Abhamid WZ, Wong KK, et al.
    Malays J Pathol, 2019 Dec;41(3):267-272.
    PMID: 31901911
    INTRODUCTION: Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease of the joints with the involvement of other systems. Previous studies have demonstrated its association with chronic periodontitis (CP), a chronic inflammatory disease of tooth-supporting tissues. Positive rheumatoid factor (RF) and anti-citrullinated protein antibody (ACPA) in RA patients have been found to be associated with CP. The aim of this study is to determine the prevalence of CP in RA patients, and to investigate the association of ACPA, RF status and RA disease activity with CP and non-CP RA patients.

    MATERIALS AND METHODS: A comparative cross-sectional study involving 98 RA patients was conducted at Hospital Universiti Sains Malaysia, Kubang Kerian, Malaysia. Clinical oral examination was carried out to determine the CP status of RA patients. RF, ACPA and erythrocyte sedimentation rate (ESR) were measured, and the 28-joint Disease Activity Score (DAS-28) was assessed.

    RESULTS: Forty-five patients (45.9%) were found to have CP (95% CI: 0.36-0.56). No significant difference was observed in the prevalence of positive RF (p=0.989) or ACPA (p=0.431) in CP and non-CP RA patients. There was also no significant association between active RA disease (DAS-28 score ≥3.2) and RF positivity in CP (p=0.927) and non-CP (p=0.431) RA patients as well as ACPA positivity in CP (p=0.780) and non-CP (p=0.611) RA patients.

    CONCLUSION: In our cohort of RA patients, we did not find significant associations between elevated RF, ACPA, or active RA disease with the presence of CP. There were also no significant associations between elevated RF or ACPA with active RA disease.

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