Вісник проблем біології і медицини -2024 -Вип. 1 (172) / Bulletin of problems in biology and medicine -2024 -Issue 1 (172) 189
КЛІНІЧНА ТА ЕКСПЕРИМЕНТАЛЬНА МЕДИЦИНА / CLINICAL AND EXPERIMENTAL MEDICINEfor and improvement of methods of prevention and treatment remain always relevant. According to experts, herbal medicine is a promising area. Therefore, the aim of the study was to investigate the effect of aqueous extracts and alcoholic tinctures from Feijoa leaves and fresh fruits on biochemical parameters in the blood serum of rats with experimental hypothyroidism. Experimental hypothyroidism was induced by daily administration of a 0.05% aqueous solution of mercazolil to rats instead of drinking water for 30 days. The study substances were administered to hypothyroid animals intragastrically at a dose of 1 ml/100 g of body weight for 21 days. Serum levels of thyroid T3 and T4 were assessed, and alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatine kinase (CK), lactate dehydrogenase (LDH), total protein, albumin, urea, creatinine, cholesterol (CHO) and triglycerides (TG) were also determined. Mercazolyl-induced hypothyroidism is characterized by a decrease in the functional activity of the thyroid gland, which is manifested in a decrease in the content of thyroid hormones in the blood serum of experimental animals. The results of the study showed that hypothyroidism contributed to an increase in serum cholesterol, triglycerides, urea, creatinine, ALT, AST and CK enzymes, and a decrease in glucose levels, indicating a violation of lipid, protein and carbohydrate metabolism in the setting of hypothyroidism. The use of the studied extracts and tinctures contributed to the restoration of biochemical parameters in the blood serum, as well as the level of thyroid hormones. In the experimental group receiving the studied compositions against the background of hypothyroidism, the level of T4 and T3 increased, positive changes in biochemical parameters occurred, which can be regarded as a sign of restoration of metabolic processes. Thus, it was concluded that further studies of the effect of aqueous extracts and 30% alcohol tinctures of feijoa leaves and fresh fruits as promising objects for the development of drugs intended for the prevention and treatment of hypothyroidism are advisable.