Abstract
The hemolysis of rabbit erythrocytes, initiated by streptolysin O purified samples, is appreciably suppressed in the presence of the scavengers of singlet oxygen (sodium azide, histidine, tryptophan), .OH-radical (ethanol, mannitol), O.(2-)-radical (nitrotetrazolium blue, streptokinase), chelating agents (o-phenanthroline, sodium diethyldithiocarbamate) and some oxidoreductants such as K3FeCN6 and riboflavin as well. The streptolysin O hemolytic effect is supposed to be realized due to the participation of active oxygen species and this phenomenon depends upon the presence of the transition metals in the system.
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