Inhibitory effect of rhynchophylline on platelet aggregation and thrombosis
Chen, C.X.; Jin, R.M.; Li, Y.K.; Zhong, J.; Yue, L.; Chen, S.C.; Zhou, J.Y.
Zhongguo Yao Li Xue Bao 13(2): 126-130
1992
ISSN/ISBN: 0253-9756 PMID: 1317985 Document Number: 396342
Rhynchophylline (Rhy) inhibited rabbit platelet aggregation induced by arachidonic acid (AA), collagen, and ADP. The values of IC50 were 0.72, 0.74, and 0.67 mmol .cntdot. L-1, respectively. Rhy reduced the thromboxane B2 (TXB2) generation in PRP induced by collagen but failed to reduce that induced by AA. Rhy suppressed malondialdehyde (MDA) formation in platelet suspension stimulated by thrombin, inhibited the platelet factor 4 (PF4) release. It did not alter intraplatelet cAMP concentration. Rhy 10-20 mg .cntdot. kg-1 iv showed a significant inhibition of venous thrombosis and cerebral thrombosis in rats.