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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.
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[Objective] To observe the apoptosis of cortical cells and expression of related gene bcl-2 in hippocampal gyrus and frontal lobe of rats with incomplete cerebral ischemia (ICI) and to investigate the effects of Yiqi Huoxue Tablet (YHT, mainly composed of Radix Astragali , Rhizoma Chuanxiong, Radix Angelicae Sinensis, Herba Leonuri, Rhizoma Acori Tatarinowii, Scorpio, etc) . [ Methods ] Rats were randomized into six groups: model group, mimic operation group, nimodipine group and low-dose, moderate-dose and high-dose YHT groups. Flow cytometry was used to detect the apoptotic rate and bcl-2 protein content in cortical cells. Histological changes were also observed under light microscope. [Results] Early apoptotic changes were found in the model group and the apoptotic rate and bcl-2 protein content were higher than those in the mimic operation group; after treatment of YHT, the apoptotic rate in frontal lobe was decreased as compared with that in the model group and that in hippocampal gyrus remained higher than that in the mimic operation group and bcl-2 protein content was reduced to the level of the mimic operation group. [ Conclusion ] ICI is related to the apoptosis of nerve cells and YHT has been proved an effectual drug for the apoptosis.
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Objective To explore the preventive effects of Radix et Rhizoma Rhei Granule on the occurrence of complicated stress ulcer of stomach (CSUS) in rats after cerebral infarction (CI) and its mechanism. Methods Rat models wi t h CI were established by the occlusion of middle cerebral artery. Preventive tre at ment of CSUS in rats after CI with Radix et Rhizoma Rhei Granule was carried out . Results As compared with the control group (Group A),apoptosis index of gastric mucosal cells was decreased and prolifer ation index increased, 5_HT level and noradrenaline (NE) content in gastric muco sa and plasma were declined, gastric and cholic acid reduced and pH value incre a sed in gastric juice of the treatment group(Group B) (P