Институт молекулярной биологии Национальной академии наук Республики Армения, Ереван, Армения Резюме. Проведено исследование уровня экспрессии генов транскрипционных факторов (GATA-3, ТBХ2, IL-2RG), а также изменения окислительных процессов при ишемическом инсульте. Обнаружено, что при инсульте наблюдается активирование Тh2-клеток (повышение экспрессии транскрипционного фактора GATA-3) и подавление Тh1-клеток (понижение экспрессии IL-2 и его рецепторов, а также гена ТВХ21). Повышение экспрессии транскрипционного фактора GATA-3 у больных инсультом лежит в основе увеличения продукции у этих больных Th2-цитокинов. Сравнительный анализ окисления белков в плазме крови выявил повышение интенсивности окислительной модификации белков у больных инсультом. Исследование содержания глутатиона, активности ферментов глутатионпероксидазы, глутатионредуктазы в эритроцитах при инсульте обнaружило уменьшение содержания глутатиона и глутатионредуктазы и увеличение активности глутатионпероксидазы. Полученные данные могут быть полезными для более полного понимания механизмов инсульта.
The gradual destruction of β-cells of the pancreas leads to insulin deficiency, diabetes mellitus develops, which is manifested by severe disorders of carbohydrate-energy metabolism, chronic hyperglycemia is accompanied by an imbalance of all functional systems of the body. Therefore, it is possible to study metabolic processes that can lead to the gradual destruction of β-cells. The aim of this study was to investigate the processes of lipid peroxidation in the total homogenate of the pancreas and liver of alloxaninduced rats, the amount of nitric oxide, and the state of the thiolisulfide system. As it is stated by the results of the study, the oxidative processes in the total homogenates of the pancreas and liver of model rats showed accumulation of lipid peroxidation products (hydroxides, malondialdehyde, Schiff bases). In alloxan-induced diabetes mellitus, a decrease in the SH content, an increase in the content of oxidized SS-groups of thiols and NO were found in the pancreas. According to the results of our research, it can be concluded that with the development of alloxan diabetes, an increase in the concentration of active compounds in the pancreas and liver is observed, which leads to disruption of the normal functioning of metabolic processes.
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