What is Matrix Metalloproteinase-8?
MMP-8 (collagenase-2) is an enzyme produced by neutrophils (immune cells) during the inflammatory response. It cleaves type I collagen, the primary structural protein in gum tissue and the periodontal ligament.
Why It Matters
MMP-8 is the most clinically relevant collagenase in periodontal disease. Elevated levels indicate active tissue destruction — the collagen fibers that hold teeth in place are being degraded. It serves as a "real-time" marker of disease activity.
What Elevated Levels Mean
High MMP-8 levels confirm active collagen breakdown in the periodontal tissues. This is a more direct measure of tissue destruction than pathogen counts alone, as it reflects the host's destructive response to the infection.
What To Do Next
Treatment should focus on eliminating the bacterial trigger and may include host modulation to reduce MMP-8 production. Sub-antimicrobial dose doxycycline (SDD) is an FDA-approved treatment that specifically inhibits MMP-8.
Related Biomarkers
Porphyromonas gingivalis
A key "red complex" bacterium strongly linked to severe periodontal disease.
Tannerella forsythia
The third member of the red complex, consistently found in progressive periodontal lesions.
Interleukin-1 beta
A key inflammatory mediator that triggers bone resorption in periodontal disease.
This information is for educational purposes only and does not constitute medical advice. Always consult your dental provider for interpretation of your specific results.