Host Response Tests for Diagnosing Periodontal Diseases

Area of Science:

• Periodontology
• Immunology
• Biochemistry

Background:

• Periodontal disease progression is episodic and occurs in susceptible individuals.
• Current diagnostic methods fail to identify susceptible patients or active disease sites.
• Novel diagnostic approaches are needed to detect active periodontal disease and susceptibility.

Purpose of the Study:

• To explore the potential of host response factors in gingival crevicular fluid (GCF) and blood for diagnosing periodontal disease activity and susceptibility.
• To evaluate specific biomarkers in GCF and blood that correlate with active periodontal disease.
• To assess the diagnostic utility of various host response markers for different forms of periodontitis.

Main Methods:

• Analysis of over 40 components in gingival crevicular fluid (GCF).
• Evaluation of blood cells and serum for diagnostic markers.
• Assessment of leukocyte adherence molecules, chemotactic receptors, and GP110 in neutrophils.
• Measurement of prostaglandin-E2 (PGE2) and Interleukin-1 release from monocytes.
• Analysis of serum antibodies and IgG2 subclass response to bacterial antigens.

Main Results:

• GCF components like alkaline phosphatase, β-glucuronidase, prostaglandin-E2, aspartate aminotransferase, and IgG4 show association with active disease (≥2 mm attachment loss).
• Commercialized tests for β-glucuronidase, neutral proteases, and aspartate aminotransferase exist, with one FDA-approved test.
• Leukocyte abnormalities diagnose generalized prepubertal periodontitis; neutrophil defects are found in localized juvenile periodontitis.
• Elevated PGE2 and Interleukin-1 release from monocytes may indicate susceptibility to severe periodontitis.
• Serum antibodies show limited diagnostic value for site-specific disease, but IgG2 response may indicate susceptibility.

Conclusions:

• GCF components hold promise for near-future diagnostic tests for periodontal disease activity.
• Blood cell analysis is valuable for early-onset periodontitis diagnostics.
• Further clinical studies are required to validate GCF component associations with active disease.
• Host response factors offer potential for improved diagnosis and identification of susceptibility in periodontal disease.