AIM: To explore the influence of ginsenoside Rh 2 on cultured PC-3M cell cycle in vitro . METHODS: DNA content was measured using -TdR incorporation assay. To analysis the cycle changes of PC-3M cells, flow cytometry was used in the experiment.RESULTS: The results indicated that the rate of -TdR incorporation was lower in Rh 2-treated cells than the control in a dose-dependent manner. Flow cytometry demonstrated that the pecent of G 1 phase treated with Rh 2 was higher than that of control. CONCLUSION: These results suggested that PC-3M cells cultured with Rh 2 for 24 h were blocked at G 1 phase, and Rh 2 inhibited the growth of PC-3M cells in vitro .

AIM: To study the effects of 7 weeks prolonged haevy load swimming and Panaxadiol Saponins (PDS) on the expression of ?-actin in quadriceps muscle of thigh in rats. METHODS: After 7 weeks prolonged heavy load swimming training, the expression of ?-actin in quadriceps muscle of thigh was quantitatively examined by Northern blotting analysis in the condition with or without PDS treatment. RESULTS: The expression of ?-actin in rat quadriceps muscle of thigh in exercise+PDS group was significantly higher than that in sedentray control group and exercise+saline group at 24 th hour after intensive training. No statistical difference between exercise+androsan group and exercise+saline group was observed.CONCLUSION: PDS enhanced ?-actin expression in quadriceps muscle of thigh in rats.

AIM: To study effects of prolonged intensive endurance exercise and Panaxadiol saponins (PDS) on red blood cells (RBC) membrane fluidity in rats, as well as the mechanism. METHODS: By the membrane fluorence polarization, Pyrollol-NBT, TBA methods and Scanning Electron Microscope, RBC membrane fluidity,RBC-SOD and serum MDA were measured after 7 weeks prolonged intensive swimming. RESULTS: Fluorence polarization(P value) were significant higher and fluidity were lower( P

AIM: To study the inducing apoptotic effect of Cisplatin (DDP) combined with Ginsenoside Rh 2 on PC-3M prostatic cancer cells in vitro. METHODS: Cell viability was examined by MTT test and the apoptosis of PC-3M by electrophoresis of NP-40 extracting fragmental DNA and flowcytometry. RESULTS: Pc-3M cells were exposed to 15.0 mg/L Rh 2 combined with 0.4 mg/L DDP: ①Cell viabililty inhibitory rate was increased by 1.44 times from 25.0% (with 0.4 mg/L DDP) to 61.03%. ②Characteristic apoptotic DNA laddering was found more obviously than using either agent alone. ③Apoptotic rate of PC-3M was increased from 0.32% (with 0.4 mg/L DDP) to 52.2%, which showed similar effect with 4.0 mg/L DDP, it was much higher than that of 15.0 mg/L Rh 2 alone (13.6%) ( P