[The role of the thrombocytic cationic protein (beta-lysin) in anti-infectious protection].

The biological activity of beta-lysin, cationite protein of thrombocytic origin with bactericidal activity, isolated from human blood serum was studied. The mechanisms of its bactericidal action was determined: the inhibition of bacterial catalase and peroxidase. The study revealed that the activity of beta-lysin in anti-infectious protection was due to both its direct bactericidal action and the enhancement the phagocytic reaction of the body by the stimulation of phagocytes and the opsonization of the pathogen.