Changes in the Metabolism of Nitric Oxide, Hydrogen Sulfide of the Oral Fluid Taking into Account Age and Dental Status
The relevance of the study is conditioned by the prevalence of dental pathology, its complicated course in senior age and the search for the age-associated metabolic markers of oral fluid.
Objective. The aim of the study is: to determine the age peculiarities of the content of nitric oxide and hydrogen sulfide metabolism in the oral fluid of patients, taking into account their dental status.
Materials and Methods. Indicators of nitric oxide metabolism, L-arginine/arginase, hydrogen sulfide content in oral fluid, dental status of different aged people under conditions of intact dentitions, their defects and against the background of correction with different types of dentures, were studied.
Results. It was determined that with age, changes in oral fluid are characterized by an increase in nitrite ion, the amount of nitrites and nitrates, increasing the formation of peroxynitrite against the background of lower levels of L-arginine and hydrogen sulfide, inhibition of arginase activity. The results obtained are confirmed by the presence of close correlations between the concentrations of hydrogen sulfide and peroxynitrite (reverse, strong), caries intensity and: the total level of nitrites and nitrates (direct, strong), peroxynitrite content (direct, medium strength).
Conclusion. The studied biomarkers of oral fluid depend more on age, hygienic condition of the oral cavity, intensity of dental caries and defects of dentitions than types of dentures. Therefore, age-related changes in the biochemical composition of oral fluid, metabolic, somatic, comorbid pathologies are likely to be a trigger for structural-functional disorders of the dental-maxillofacial system.
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