CS-570, a chemically stable prostacyclin derivative, inhibited decrease of platelet counts and fibrinogen level, increase of FDP, prolongation of prothrombin time and activated partial thromboplastin time and deposition of fibrin in the renal glomeruli dose-dependently in the endotoxin-induced DIC model of rats. Ticlopidine, dazoxiben (thromboxane synthetase inhibitor) and BM 13177 (thromboxane antagonist) also showed inhibition of changes in these parameters. CS-570, a potent platelet stabilizer and vasodilator, would probably have inhibited thrombocytopenia and coagulation disorders by physiological antagonism against TxA2 produced by endotoxin. This would suggest beneficial effects of CS-570 in endotoxin-induced DIC in humans.
