EFFECTS OF BACTERIAL ENDOTOXIN ON RABBIT PLATELETS

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Abstract
Incubation of platelet-rich rabbit plasma with E. coli endotoxin at 37°C results in platelet aggregation and transfer of platelet 5-hydroxytryptamine to plasma. Release of 5HT is influenced by dose of endotoxin, type of anticoagulant, and temperature of incubation. A heat-labile plasma factor is necessary for the platelet-endotoxin interaction. Additional studies have shown that incubation of endotoxin with platelet-rich rabbit plasma also results in release of platelet phospholipid and bactericidins active against B. subtilis.