Background: Stress is an integral part of human life and leads to maladaptation of the organism and needs rational pharmacological correction. Objective: The purpose of this experiment was to evaluate the adaptogenic potential of European mistletoe extracts. Methods: The work was performed on Balb/c mice. The test-objects were ethanol and aqueous extracts of European mistletoe (Viscum album L., Santalaceae) collected from pear and black poplar in dose 100 mg/kg (P.O.). Physical overloads were modeled in the forced swimming test. The analyzed parameters were: the duration of animals swimming, changes in the parameters of mitochondrial respiration, the concentration of ATP, activity of caspase-3, and apoptosis-inducing factor in the muscles and lactic acid in the blood serum of animals. The state of the pro / antioxidant system and acute toxicity of the test-extracts was also evaluated.
Results:The study found that the LD50 of the test-extracts was more than 5000 mg/kg (P.O.). Ethanol extracts (40 and 70 %) with a single administration had the greatest impact on the physical strain of mice. In the course administration of 40 % ethanol mistletoe extracts the swimming time of mice was increased by 3.4 and 5.05 times (P < 0.05) from black poplar and pear, respectively. Also, the use of 40 % extracts contributed to the normalization of the pro/antioxidant balance, the restoration of the cell energy metabolism, and the decrease of the intensity of the apoptotic reactions.
Conclusion:The study showed that the 40 % ethanol extracts from European mistletoe (host plants: pear and black poplar) potentially can be used as adaptogenic agents.
To date, stress is a common medical and socially significant disease that requires rational pharmacotherapeutic correction.The anti-stress properties of ethnolic and aqueous extracts obtained from leaves of Ribes nigrum L., inflorescences of Gaillardia pulchella Foug., stems of Lysimachia punctata L were studied in this work. Acute stress was modeled by immobilization of rats for 2h. The test-extracts were administered per os prophylactically in a dose of 1/20 of LD50 (2000mg/kg). The following parameters were evaluated: organs mass coefficient (adrenal glands, thymus, spleen), the number of stomach erosion; the biochemical changes in the blood serum (adrenaline, cortisol, total protein and glucose concentration); the mitochondrial function parameters in brain and myocardium (evaluation of mitochondrial pore transitional permeability opening and mitochondrial membrane potential). 70% ethanol extract from Gaillardia pulchella Foug. inflorescences has the highest anti-stress activity, the course application of which contributed to the normalization of the weight index of organs, a decrease in glucose concentration by 64.5% (p <0.05), and cortisol by 73.7% (p <0.05) and adrenaline -78.9% (p <0.05) in the blood, an increase in total protein level by 62.5% (p <0.05) and stabilization of mitochondrial function. The study showed a high anti-stress activity of 70 % ethanol extract from Gaillardia pulchella Foug. inflorescences.
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