The aim: To assess the metabolic by-products of nitric oxide in peripheral blood before and after the medicamentous management in patients suffering from community-acquired pneumonia associated with coronary heart disease. Materials and methods: We have examined 102 patients with community-acquired pneumonia aged from 50 to 65 years, of which 58 patients were diagnosed with coronary heart disease (CHD). The complex treatment of patients with coronary heart disease was supplemented by the additional use of tivortin aspartate, which was taken orally with food at the dose of 5 ml (1g) 3 times a day for 15 days. The NO content in blood plasma was assessed by the concentration of the amount of final NO metabolites (NO3 + NO2), identified by means of the photocalorimetric method. Results: The content of (NO3 + NO2) in peripheral blood of patients with CAP was slightly higher (6.83 ± 0.29) μmol/l as compared to the group of apparently healthy individuals (5.19 ± 0.14) μmol/l, while in patients with CAP associated with CHD it has markedly increased to (12.74 ± 1.09) μmol/l. Against the background of administered treatment, the index of (NO3 + NO2) in patients with coronary heart disease has decreased to (5.76 ± 0.33) μmol/l, while in the group of patients who were not given tivortin aspartate additionally, this index has even slightly increased (7.01 ± 0.40) μmol/l. Conclusions: Marked increase of (NO3 + NO2) levels in blood pointed to destabilization of the course of coronary heart disease with CAP, which was eliminated by the involvement of tivortin aspartate (15 days) to the main course of treatment.

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The aim: The purpose of the work was to study the peculiarities of blood supply the pancreatic islet of the 24-month-old rat, and its restructuring during the initial periods of experimental diabetes mellitus. Materials and methods: The work was performed on 20 white outbred rats - males weighing 340-420g. 24 months of age, kept in standard vivarium conditions in compliance with all accepted ethical rules. Experimental streptozotocin diabetes mellitus was simulated in 16 animals. The material was taken on the 14th and 28th day of the experiment. Results: Reorganization of the endocrine part of the pancreas in the early stages of experimental diabetes is characterized by a decrease in the number and area of pancreatic islets, a decrease in the diameter of the lumen of arterioles, precapillaries, postcapillaries compared to the control group of animals by 7% and 5%. The diameter of the capillaries decreases by 16% and reaches 3.8 ± 0.62 μm2, and the diameter of the venules increases by 12%. In some blood vessels there are phenomena of desolation and edema of perivascular connective tissue, which is manifested by a decrease in optical density and stratification of collagen fibers. Conclusions: Thus, the reorganization of the circulatory system of the endocrine part of the pancreas of 24-month-old rats in the early stages of experimental diabetes mellitus is characterized by a decrease in the number and area of pancreatic islets.

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