The Role of Beta-Blockers in Vetianginal Therapy in the Correction of Violations of the Amino Acid Spectrum in Patients With Unstable Angina With Concomitant Diabetes Mellitus

Abstract

The purpose of the study: to study the effect of bisoprolol and nebivolol on the spectrum of essential blood plasma AK in patients with concomitant diabetes mellitus (DM) type 2 in order to optimize drug treatment of this pathology in the future.Material and methods. The study involved 70 patients with NA with concomitant DM type 2, which was divided into two groups: group I (37 patients) as part of basic antianginal therapy received bisoprolol, group II (33 patients) received nebivolol. The control group (CG) consisted of 18 healthy individuals. All patients were tested for irreplaceable blood plasma AA by ion exchange liquid chromatography on an automatic analyzer AK T-339 produced by «Microtechna» (Czech Republic, Prague) at the Institute of Biochemistry named after OV Palladin NAMS of Ukraine. The following essential AAs were identified: arginine, valine, histidine, isoleucine, leucine, lysine, methionine, threonine, phenylalanine. Examination of patients was performed at the beginning of treatment and after 20 days. Results. It was determined that in patients with NA with concomitant DM type 2 under the influence of antianginal therapy in both groups significantly decreased the total amount of irreplaceable AA compared with control group, indicating an increase in intracellular metabolism as a compensatory response in coronary circulation. It should be noted that in patients of group II, in contrast to patients of group I, under the influence of treatment the level of histidine remained normal. The level of threonine significantly decreased compared to CG and the rate of patients in group I, the level of valine significantly increased compared to pre-treatment, the level of isoleucine significantly decreased compared with CG and with the rate of patients of group I. Importantly, ammonia levels returned to normal under the influence of basic therapy, which included nebivolol.Conclusion. The dynamics of changes in the levels of individual irreplaceable AA blood plasma, due to the mechanisms of their metabolic transformations in patients with NA with concomitant DM type 2 indicates greater effectiveness of nebivolol and the feasibility of its prescription іn complex of a basic antianginal therapy.