THE EFFECT OF THE CRYOPRESERVED SWINE SKIN SUBSTRATE ON THE IMMUNE RESPONSE OF RATS WITH NORMAL HOMEOSTASIS
The aim of this work was to determine the immunotropic properties of the cryopreserved swine skin substrate (CSSS) in animals with normal homeostasis. The study was conducted in male mice weighing 18.0-20.0 g and male rats weighing 180.0-200.0 g. The effect of prophylactic oral CSSS doses of 200 and 500 mg/kg on the phagocytic activity of neutrophils, the state of oxygen-dependent antimicrobial neutrophil systems was evaluated in the test of nitroblue tetrazolium reduction (NBT-test), the antibody response (the number of antibody-forming cells and the level of hemagglutinin and hemolysin in the serum) and development of the reaction of the delayed type hypersensitivity have been studied. A significant immune-modulating activity of CSSS has been found, the oppositely directed character of this activity when the drug is used in two doses of 200 mg/kg and 500 mg/kg has been determined. In low doses CSSS induces activation of the nonspecific link of the immunity and suppressive processes of the cell-mediated immune response. When it is used in high doses, the stimulation of serogenesis processes is observed. The results obtained justify feasibility and prospects of further study of the mechanisms of the CSSS action in order to create a highly effective anti-allergic drug.