[Effects of acetylsalvianolic acid A on arachidonic acid metabolism in platelets].

Acetylsalvianolic acid A (ASAA) has been shown to be an antiplatelet compound. Our studies with RIA showed that: at the dosage of inhibiting platelet aggregation, ASAA was found to inhibit the formation of cyclooxygenase pathway metabolites TXB2 in platelets. In addition, ASAA was also shown to promote the formation of 6-keto-PGF1 alpha in rabbit aortic rings in vitro. The above results suggest that ASAA may inhibit the proaggregator TXA2 formation, promote mildly the antiaggregator PGI2 generation and probably, whereby, exert its antiplatelet activity.