EFFECT OF BETA-BLOCKERS AND STUDY OF AGGREGATiVE ACTIVITY OF THROMBOCYTES IN PATiENTS WITH DILATED CARDIOMYOPATHY

The aim. was to study peculiarities of ischemic and idiopathic dilated cardiomyopathy and. aggregative activity of thrombocytes and. also the response to the therapy by beta-blockers (Atenolol and Bisoprolol). Material and. methods: study of aggregative activity of thrombocytes in patients with ischemic and. idiopathic dilated cardiomyopathy, study of dynamics of aggregative activity of thrombocytes in patients with ischemic and. idiopathic dilated cardiomyopathy under the influence of 3-months therapy by Atenolol and. Bisoprolol. Research of aggregative activity of thrombocytes in patients involved in the research demonstrated reliable increase of speed and. maximum amplitude of thrombocytes aggregation at addition of 0,5 normal solution of ADP and. reliabie decrease of time of reaching of maximum amplitude of aggregation. Comparison of patients with idiopathic and. ischemic dilated cardiomyopathy revealed reliable increase of all the indices of aggregative activity in patients with ischemic dilated cardiomyopathy in comparison with ones with idiopathic form in both groups of therapy. The research shows that patients with dilated cardiomyopathy have an activation of aggregative activity of thrombocytes that is more evident in patients with ischemic form. Prolonged use of Bisoprolol allows to achieve more evident antiaggregative effect of used base therapy in comparison with use of Atenolol

FREE-RADICAL OXIDATION ACTIVITY IN PATIENTS WITH ACUTE MYOCARDIAL INFARCTION WITHOUT Q WAVE TREATED WITH EPROSARTAN OR ENALAPRIL ADDITIONALLY TO THE BASIC THERAPY

Aim. To compare effects of eprosartan and enalapril on free-radical oxidation in patients with acute myocardial infarction (AMI) without Q wave.Material and methods. 50 patients (aged 52,8±3,3 y.o.) with AMI without Q were involved into the study. Patients were randomized on 2 groups. The first group consisted of 24 patients (51,1±2,4 y.o.) which received basic therapy and enalapril (10 mg daily). The second group consisted of 26 patients (53,1±3,0 y.o.) which received basic therapy and eprosartan (600 mg daily). Basic therapy included anticoagulants, antiplatelets, beta-blockers, nitrates and statins. Intensity of free-radical oxidation was evaluated by change of serum malonic dialdehyde (MDD) concentration. Functional activity of serum enzymes of antioxidatic system (AOS) was evaluated by rate of reaction of superoxide dismutase (SOD) and catalase (CT).Results. The intensity of free-radical oxidation increased in patients with AMI without Q: high level of MDD and peroxinitrite (ONOO-). Besides activity of AOS enzymes (SOD and CT) decreased. Eprosartan reduced intensity of peroxide oxidation more prominently in comparison with enalapril. Both drugs preserved low activity of SOD and CT.Conclusion. Eprosartan was significantly more effective than enalapril in reduction of serum free-radical oxidation in patients with AMI without Q wave during 10 days after hospital admission

FREE-RADICAL OXIDATION ACTIVITY IN PATIENTS WITH ACUTE MYOCARDIAL INFARCTION WITHOUT Q WAVE TREATED WITH EPROSARTAN OR ENALAPRIL ADDITIONALLY TO THE BASIC THERAPY

Aim. To compare effects of eprosartan and enalapril on free-radical oxidation in patients with acute myocardial infarction (AMI) without Q wave.Material and methods. 50 patients (aged 52,8±3,3 y.o.) with AMI without Q were involved into the study. Patients were randomized on 2 groups. The first group consisted of 24 patients (51,1±2,4 y.o.) which received basic therapy and enalapril (10 mg daily). The second group consisted of 26 patients (53,1±3,0 y.o.) which received basic therapy and eprosartan (600 mg daily). Basic therapy included anticoagulants, antiplatelets, beta-blockers, nitrates and statins. Intensity of free-radical oxidation was evaluated by change of serum malonic dialdehyde (MDD) concentration. Functional activity of serum enzymes of antioxidatic system (AOS) was evaluated by rate of reaction of superoxide dismutase (SOD) and catalase (CT).Results. The intensity of free-radical oxidation increased in patients with AMI without Q: high level of MDD and peroxinitrite (ONOO-). Besides activity of AOS enzymes (SOD and CT) decreased. Eprosartan reduced intensity of peroxide oxidation more prominently in comparison with enalapril. Both drugs preserved low activity of SOD and CT.Conclusion. Eprosartan was significantly more effective than enalapril in reduction of serum free-radical oxidation in patients with AMI without Q wave during 10 days after hospital admission.</p

Platelet aggregation activity and beta-adrenoblocker therapy in patients with dilated cardiomyopathy

Aim. To investigate the specifics of ischemic and idiopathic dilated cardiomyopathy (DCMP), platelet aggregation activity, and the reaction of the latter to the beta-adrenoblocker (β-AB) therapy with atenolol or bisoprolol. Results. In DCMP patients, a significant increase in velocity and maximal amplitude of ADP-induced platelet aggregation, as well as a significant reduction in the time to the maximal aggregation amplitude, was observed. In both therapy groups, all parameters of platelet aggregation activity were significantly higher in ischemic vs. idiopathic DCMP patients. Long-term bisoprolol therapy provided a more manifested antiaggregant effect of the basis treatment, compared to atenolol therapy. Conclusion. DCMP patients, especially ones with ischemic DCMP, demonstrated an increase in platelet aggregation activity. Long-term bisoprolol therapy facilitated a more pronounced anti-aggregant effect of the basis treatment, compared to atenolol treatment