[Study in the mechanism of Shuxuetong injection on antithrombosis and thrombolysis].

To study the effect of Shuxuetong injection on cerebral tissue and brain microvascular endothelial cell(BMEC) in secreting tissue-type plasminogen activator (tPA).The experiment in vivo was designed for three groups: sham-operation group, focal cerebral ischemia model group, Shuxuetong injection-treated group. The gene expression and the activity of tPA on brains were detected by RT-PCR and chromogenic substrate analysis respectively after treatment for five days; The experiment in vitro: The cultured BMEC were divided into experimental group and control group. The Shuxuetong injection were added into experimental group and the BMECs in the experimatal groups were treated for 24 h. The gene expression and the activity of tPA on cultured BMEC were detected by RT-PCR and chromogenic substrate analysis respectively.The gene expression and the content of tPA on both cerebral tissue and BMEC in the experimatal groups were significantly higher than that in the control groups.Shuxuetong injection could accelerate secretion of tPA, and therefore enhance fibrinolysis.