ABSTRACT
Turbidimetry was used to examine the inhibitory effect of Xanthoxyin on adenosine diphosphate (ADP)-, arachidic acid (AA )- and thrombin-induced platelet aggregation in rabbits. In-vitro experiment showed that Xanthoxyin 0.037,0.l85,0.924,9.240,92.40?mol. L -1 , can significantly inhibit ADP-, AA- and thrombin-induced platelet aggregation. The inhibition rates were 22.4%-70.l%,l5.3%-68.2% and 25.8%-74.6% respectively. In-vivo experiment showed that Xanthoxylin (ig. 5 mg/kg) cand also inhibited ADP-, AA-and throbin-induced platelet aggregations. The inhibition rates were 2l.0%,35.7%,50.9% and 32.7% in ADP-induced group,23.2%,46.3%,52.4% and 4l.6% in AA-induced group, and 26.7%, 44.5%,6l.6% and 54.2% in thrombin-induced group respectively l5,30, 60 and 90 minutes after ig. Xanthoxylin.
