Abstract
This study is devoted to an experimental study of the effect of Semax (Met-Glu-His-Phe-Pro-Gly-Pro) on the intensity of lipid peroxidation of the thymus and spleen lipids of male rats under conditions of “social” stress. “Social” stress in animals was modeled by the formation of aggressive and submissive behavior of males in the conditions of distant sensory contact. The intensity of lipid peroxidation (LPO) in the thymus and spleen was determined by spectrophotometry using three indicators: the initial level of products reacting with thiobarbituric acid (TBA-reactive products), the rate of spontaneous and induced by ascorbate and iron ions of LPO. “Social” stress is accompanied by an increase in peroxidation processes in immunocompetent organs, which contributes to the development of stress-induced functional disorders of the immune system. Against the background of Semax administration under “social” stress, its pronounced corrective effect on lipid peroxidation rates is observed, as evidenced by a decrease in spleen and thymus tissue homogenates of male rats in the initial level of TBA-reactive products, as well as spontaneous and ascorbate-dependent levels of lipid peroxidation.
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