Rheumatoid factor (RF) distribution in periodontal disease

Area of Science:

• Immunology
• Periodontology
• Rheumatology

Background:

• Periodontal disease and rheumatoid arthritis share chronic inflammation.
• Autoantibodies like IgM rheumatoid factor (RF) are implicated in autoimmune conditions.
• The relationship between periodontal disease and IgM-RF requires further investigation.

Purpose of the Study:

• To investigate the occurrence of IgM rheumatoid factor (RF) in periodontal disease patients.
• To develop and validate a sensitive biotin-avidin ELISA for IgM-RF detection.
• To explore the association between IgM-RF and antibody levels to oral microorganisms.

Main Methods:

• A biotin-avidin ELISA assay was developed and validated using a rheumatoid arthritis population.
• Serum immunoglobulin concentrations and antibody profiles were analyzed in 260 subjects (171 with periodontal disease).
• IgM-RF seropositive and seronegative periodontal disease patient groups were compared for antibody levels to oral bacteria.

Main Results:

• The developed ELISA assay was sensitive and accurate for detecting IgM-RF.
• In 171 periodontal disease patients, 9.4% were seropositive for IgM-RF, predominantly with advanced or adult periodontitis.
• The IgM-RF positive group exhibited significantly elevated IgM and IgG antibodies to Capnocytophaga species and F. nucleatum compared to seronegative patients.

Conclusions:

• Chronic inflammation in periodontitis is associated with increased formation of IgM-RF.
• A relationship exists between IgM-RF and elevated antibodies to specific oral microorganisms.
• Periodontal disease may contribute to the development of IgM-RF, suggesting a potential link between oral health and systemic autoimmunity.