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OBJECTIVE The aim: Is to study dynamics of resorptive potential of bone tissue by indicators of protease and antiprotease systems in the process of treatment generalized periodontitis in patients with age-related osteoporosis and without osteoporotic changes in the skeleton. PATIENTS AND METHODS Materials and methods: In 102 patients, before the start of treatment of generalized periodontitis and in 2, 4 and 12 weeks, the concentration of pro-resorbing matrix metalloproteinases: stromelysin (MMP-3), collagenase (MMP-8) and gelatinase (MMP-9) were determined in blood plasma and mixed oral fluid. The antiresorbtive potential of bone tissue was evaluated by the concentration of a tissue inhibitor of metalloproteinases (TIMP-1) in plasma. The general antiprotease activity was determined by the activity of α1-antitrypsin (α1-AT) and α2-macroglobulin (α2-MG). RESULTS Results: The most significant changes are recorded for the content of MMP-9 in blood and oral fluid, regardless of the presence of systemic disorders of bone metabolism (P < 0.05). Concentration of MMP-8 is significantly increased in blood plasma and oral fluid in accordance with the severity of the disease and in the course of treatment (P |
