To detect the effect of the aldosterone(ald) on the development of myocyte hypertrophy in SHRs, the left ventricle-heart weight ratio (LVR), the plasma concentrations and the cardiac contents of ald, the activity of cardiac MAPKs were measured in WKY rats and in SHRs either untreated and treated with spironolactone (spiron), respectively. The incorporations of 3 H-leu in incubated myocardial tissue slices were also detected in the above groups at three incubated time points of 4, 6, 8h. The results showed that the LVR, the cardiac corporations of 3 H-leu at three time points,and the activity of MAPKs were significant increases in SHRs, whereas the LVR, the corporations of 3 H-leu at each time point, the activity of MAPKs, and the levels of plasma ald were significant deceased in spiron treated SHRs. The data suggested that the combination of the local cardiac tissue ald with its receptor could induce increases in the synthesis of the myocyte proteins,leading to myocyte hypertrophy, in SHRs by activating the cardiac MAPKs.

Objective: To investigate the effect of Danshensu Capsules on platelet aggregation, experimental thrombosis and hemorrheology in rat. Methods : The effects of Danshensu Capsules were observed on platelet aggregation induced by ADP. Occlusive thrombotic time was determined by electrostimulating; “blood stasis” model was prepared by ice water stimulation and the main hemorheological indexes were detected. Results : Danshensu Capsules could greatly inhibit the platelet aggregation in rat induced by ADP and delay occlusive thrombosis time after electrostimulating rat common carotid artery as well as decrease whole blood viscosity, plasma viscosity, red-cell specific volume, red-cell electrophoresis time, yield stress and red-cell aggregation indexes in experimental rat with the blood stasis syndrone. The rat's hemorheological properties were improved. Conclusion : Danshensu Capsules could decrease obviously the blood state with “dense、viscosity、aggregation、coagulation” and have obvious actions of blood-activating and stasis-eliminating.