[Effect of histamine and H1-receptor blockaders on bacterial endotoxin-induced thrombocyte aggregation]

Histamine and dimedrol exerted in vitro inhibitory effects on endotoxin-induced platelet aggregation. When administered at high concentrations pyrilamine potentiated aggregating influence of endotoxin. The experimental results indicate difference in effects of dimedrol and pyrilamine falling into the same group of H1-blockers in relation to induced platelet aggregation.