RESUMO
Objective To study the effect of Yiqi Huoxue Tablets on blood coagulation and fibrinolysis system of rats with cerebral apoplexy induced by artificial cold wave. Methods SD rats were randomized into 4 groups. The apoplexy-prone renovascular hypertensive rat model was established by the bilateral renal arteries clamping method. From the 14th day after the modeling operation, the treatment group was given Yiqi Huoxue Tablets (1.89 g·kg-1·d-1), the positive control group was given aspirin (80 mg·kg-1·d-1), and the model group and the blank group were given the same volume of distilled water, once a day. After 112 days, the rats were put into the artificial cold wave box staying for 3 days to inducing apoplexy, and then thrombin-activatable fibrinolysis inhibitor (TAFI) and protein C ( PC) , thrombin-antithrombin complexes ( TAT) and plasmin-antiplasmin ( PAP) levels were measured. Results The plasma levels of TAFI, PC, TAT, and PAP in Yiqi Huoxue Tablets group were lower than the model group, the difference being statistically significant ( P<0.05) . Conclusion The preventive and therapeutic mechanism of Yiqi Huoxue Tablets for cerebral apoplexy is probably related with the regulation of the balance between blood coagulation and fibrinolytic system of apoplexy-prone renovascular hypertensive rats.