Membrane-stabilizing properties of Viburnum opulus fruit liquid extract and cardioprotective effect of tablets based on it

Abstract

Aim. To study the membrane-stabilizing properties of Viburnum opulus fruit liquid extract (VOFLE) and the cardioprotective activity of “Viburnikor” tablets developed on the basis of VOFLE. Materials and methods. Membrane-stabilizing properties of VOFLE were studied according to the Jager F.C. method in rats with determination of the spontaneous hemolysis degree caused by peroxide oxidation of erythrocyte membranes lipids. VOFLE (50, 100, 150 mg/kg), reference drugs Quercetin (200 mg/kg) and vitamin E (50 mg/kg) were administered to animals intragastrically (i/g) for 7 days. Adrenaline myocardiodystrophy was reproduced in rats by a single subcutaneous injection of adrenaline hydrochloride (0.18 % solution) in the dose of 0.5 mg/kg (0.28 ml/kg) of the body weight. Thirty (30) white male rats with an initial weight of 230-270 g, aged 6-6.5 months were used in the experiment. “Viburnikor” tablets (100 and 150 mg/kg of the VOFLE content) and Quercetin (200 mg/kg) were administered i/g for 7 days, the last time 1 hour before the cardiotoxin administration. The activity of the drugs was evaluated by the survival of animals, the functional state of the myocardium (ECG studies), the effect on the heart mass ratio, the activity of aspartate aminotransferase (AST), the level of active products interacting with thiobarbituric acid (TBA-AP), the content of reduced glutathione (RG) and catalase activity in the heart homogenate. Results and discussion. The VOFLE studied showed the most pronounced membrane-stabilizing effect in the doses of 100 and 150 mg/kg, respectively, 22 and 34 %, the intensity of which was not inferior to the reference drugs Quercetin (26 %) and vitamin E (28 %). On the model of catecholamine myocardiodystrophy, “Viburnikor” tablets (100 and 150 mg/kg) contributed to the improvement of the heart function, as evidenced by the normalization of electrocardiographic parameters and heart mass ratio to the level of intact animals. It has been shown that the cardioprotective properties of “Viburnikor” tablets are exhibited by detecting anticytolic (decrease in the AST activity to the level of intact control) and antioxidant action (decrease in the level of TBA-AP in the myocardium of animals by 31 % (p<0.05) and 33 % (p<0.05), respectively, and a 1.6- and 1.7-fold increase in RG (p<0.05) and catalase (p<0.05) versus the control pathology). Conclusions. It has been proven that the most pronounced membrane-stabilizing effect of the VOFLE studied is in the doses of 100 and 150 mg/kg. Cardioprotective properties of “Viburnikor” tablets have been determined on the model of catecholamine myocardiodystrophy by revealing anticytolic and antioxidant effects. By the intensity of the membrane-stabilizing and cardioprotective activity of the drugs studied, VOFLE and “Viburnikor” tablets are not inferior to the reference drugs.