GENDER AND AGE ASPECTS IN THE PATHOGENESIS OF BONE MINERAL DENSITY DISORDERS

OBJECTIVE

The aim: To assess the structural and functional state of bone tissue in terms of gender and age.

PATIENTS AND METHODS

Materials and Methods: 108 people aged 54.7±14.8 years, who were divided into two groups according to gender, participated in the retrospective cohort study. All patients underwent ultrasound densitometry to assess bone mineral density (BMD) on the radial bone with an assessment of T-score, Z-score, and speed of ultrasonic wave propagation (SoS).

RESULTS

Results: The study found that T-score and Z-score values, which corresponded to osteoporosis, were recorded in the age group > 50 years, regardless of the gender of the subjects. All women older than 35 years had a decrease in BMD below -1.0 SD by T-score. It was determined that osteoporosis criteria clearly prevail in women of the > 50-year-old group. In osteoporosis, the SoS is significantly lower than in individuals with normal indicators of the T-criterion. According to the results of the T-score comparison, BMD disorders were determined in postmenopausal women which emphasize the importance of the level of female sex hormones in the formation of osteopenic syndrome, in contrast to men, in whom no changes in the state of bone tissue were recorded.

CONCLUSION

Conclusions: The results of the research prove the prevalence of osteopenic syndrome in terms of age and gender, with an emphasis on women aged 50 years and older. Screening for BMD disorders using ultrasound densitometry is appropriate and allows taking measures to prevent the progression of osteoporosis in the early stages.

EVALUATION OF BONE RESORPTIVE POTENTIAL IN THE TREATMENT OF GENERALIZED PERIODONTITIS

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 <0.05). The observed increase in the ratio of MMP-8 to TIMP-1 and MMP-9 to TIMP-1 in patients with generalized periodontitis, complicated by systemic osteoporosis (P < 0.05), indicates an imbalance of the protease-antiprotease system.

CONCLUSION

Conclusions: The resorptive potential of bone tissue in patients with generalized periodontitis allows us to correctly choose treatment tactics and to prevent the development of complications.