The state of the nitrogen (II) oxidesystem in rats with periodontitis on the background of hyper- and hypothyroidism
DOI:
https://doi.org/10.11603/mcch.2410-681X.2018.v0.i1.8844Keywords:
periodontitis, thyroid hormones, nitrogen (II) oxide.Abstract
Introduction. Inflammatory periodontal disease is one of the most urgent problems of dentistry, which has a social significance due to the high prevalence, pronounced changes in the tissues of the periodontal disease and the body of the patient as a whole, and the defeat of young people.
The aim of the study – to investigate the functional state of the nitrogen (II) oxide system in rats with periodontitis without concomitant pathology and against the background of hyper- and hypothyroidism.
Research Methods. The study was carried out on 48 white non-linear male rats. The total activity of NO-synthase (NOS) was determined colorimetrically by the number of formed nitrates and nitrites in the incubation medium. The total content of nitrates and nitrites (NOx) was determined by the Gris method.
Results and Discussion. Experimental periodontitis is accompanied by increased general activity of NO-synthase in periodontal tissue homogenate by 2.2 times vs control. NOx content in the serum of animals with periodontitis increased by 46.2% and in the periodontal tissue homogenate – by 74.7% compared with the control. In rats with periodontitis against hyperthyroidism, NOS activity increased by 3.9 times relative to the control group of animals and by 75.9% exceeded the rate of rats with periodontitis without concomitant pathology. In rats with periodontitis, against the background of hypothyroidism, the activity of NOS was 29.6% higher than that of rats with periodontitis without concomitant pathology and 2.9-fold of control.
Conclusions. Experimental periodontitis is accompanied by a marked increase in the intensity of nitroxidergic processes both in the homogenate of periodontal tissues and in the blood. The imbalance of thyroid hormones increases the synthesis of nitrogen (II) oxide in the experimental periodontitis, especially expressed in hyperthyroidism.
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