[Inhibitory effects of new-breviscapine on thrombosis in vivo].

New-Breviscapine is an anti-platelet compound with some kinds of salts extracted from a Chinese herb Erigeron breviscapus. In aortic thrombus formation in rabbits, the platelet 5-HT release reaction and platelet destruction could be reduced by the compound, meanwhile aortic thrombosis was inhibited with a clear correlation between drug dosage and its efficacy. It was shown that new-breviscapine could inhibit the production of TXB2 and 6-keto-PGF1 alpha by platelets and endothelial cells respectively. The data suggest that new-breviscapine has a significant inhibitory effect on thrombus formation in vivo through suppression of platelet functions.