The effect of antithrombotics in a new model of arterial thrombosis.

A series of drugs representing several groups of antithrombotics was tested in a new model of arterial thrombosis in rats. Thrombosis was produced in the aorta by the combination of local partial obstruction and systemic administration of hypotonic saline with serotonin. High efficacy was demonstrated with heparin, acetylsalicylic acid, troxerutin, prenylamine, antiserotonin agents /pizotifen, ketanserin/ and particularly with the combinations of antiserotonins and the above mentioned antithrombotic drugs. The model showed high sensitivity to all tested drugs in the clinical dose range.