Systemic inflammatory responses in progressing periodontitis during pregnancy in a baboon model

Area of Science:

• Reproductive biology
• Periodontology
• Immunology

Background:

• Periodontitis is a common oral infection.
• Pregnancy can exacerbate periodontal disease.
• Systemic inflammation during pregnancy may affect outcomes.

Purpose of the Study:

• To investigate systemic inflammatory mediator profiles in pregnant baboons with ligature-induced periodontitis.
• To correlate these mediator levels with periodontal disease severity.
• To explore potential links to adverse pregnancy outcomes.

Main Methods:

• Pregnant baboons underwent ligature-induced periodontitis in quadrants of their mouths.
• Serum samples were collected at baseline, mid-pregnancy, and delivery.
• Levels of various inflammatory mediators (e.g., PGE(2), IL-6, IL-8) were measured.
• Clinical periodontal parameters (plaque, inflammation, pocket depth, attachment loss) were assessed.
• Systemic antibody responses to key periodontal pathogens were analyzed.

Main Results:

• All baboons developed clinical signs of periodontitis.
• Prostaglandin E(2) (PGE(2)) and bactericidal permeability inducing factor (BPI) increased by mid-pregnancy.
• Interleukin (IL)-6 levels rose by delivery.
• IL-8, MCP-1, and LBP decreased during the study.
• Specific mediator profiles correlated with periodontal disease severity.
• Antibody responses to oral bacteria were linked to mediator level variations.

Conclusions:

• Ligature-induced periodontitis in pregnant baboons alters systemic inflammatory mediator profiles.
• The observed inflammatory responses correlate with periodontal disease severity.
• These systemic changes may contribute to adverse pregnancy outcomes in susceptible individuals.