This study was conducted to investigate the effects of Sasa quelpaertensis bamboo and green tea on plasma and liver lipids, platelet aggregation, and erythrocyte membrane Na channels in ovariectomized (OVX) rats. Thirty female rats were OVX, and ten female rats were sham-operated at the age of 6 weeks. The rats were divided into four groups at the age of 10 weeks and fed the experiment diets: sham-control, OVX-control, OVX-bamboo leaves (10%), or OVX-green tea leaves (10%) for four weeks. Final body weight increased significantly in the OVX groups compared with that in the sham-control, whereas body weight in the OVX-green tea group decreased significantly compared with that in the OVX-control (P < 0.01). High density lipoprotein (HDL)-cholesterol level decreased in all OVX groups compared with that in the sham-control rats (P < 0.05) but without a difference in plasma total cholesterol. Plasma triglycerides in the OVX-green tea group were significantly lower than those in the sham-control or OVX-control group (P < 0.05). Liver triglycerides increased significantly in the OVX-control compared with those in the sham-control (P < 0.01) but decreased significantly in the OVX-green tea group compared with those in the OVX-control or OVX-bamboo group (P < 0.01). Platelet aggregation in both maximum and initial slope tended to be lower in all OVX rats compared with that in the sham-control rats but was not significantly different. Na-K ATPase tended to increase and Na-K cotransport tended to decrease following ovariectomy. Na-K ATPase decreased significantly in the OVX-green tea group compared with that in the OVX-control group (P < 0.01), and Na-K cotransport increased significantly in the OVX-bamboo and OVX-green tea groups compared with that in the OVX-control (P < 0.05). Femoral bone mineral density tended to be lower in OVX rats than that in the sham-control, whereas the green tea and bamboo leaves groups recovered bone density to some extent. The results show that ovariectomy caused an increase in body weight and liver triglycerides, and that green tea was effective for lowering body weight and triglycerides in OVX rats. Ovariectomy induced an increase in Na efflux via Na-K ATPase and a decrease in Na efflux via Na-K cotransport. Furthermore, consumption of green tea and bamboo leaves affected Na efflux channels, controlling electrolyte and body water balance.

This experiment was conducted to investigate the effects of Sasa borealis bamboo and green tea on erythrocyte Na channels, platelet aggregation, plasma and liver lipids in ovariectomized (OVX) rats. Thirty ovariectomized rats and ten sham rats at age of 10 weeks were fed 10% bamboo or green tea for four weeks. The final body weight was significantly increased in OVX‐control compared to the sham‐control (p<0.01) and significantly decreased in OVX‐green tea compared to the OVX‐control (p<0.01). HDL‐cholesterol was significantly decreased in OVX‐control and OVX‐bamboo compared to sham‐control (p<0.01) without difference in total cholesterol. Plasma triglyceride of OVX‐green tea was significantly lower than those of sham‐control or OVX‐control (p<0.01). Liver triglyceride of OVX‐control was significantly increased compared with sham‐control (p<0.01), and liver triglyceride of OVX‐green tea was significantly decreased compared with OVX‐control or OVX‐bamboo (p<0.01). Platelet aggregation was lower in OVX‐control compared with sham‐control, but no statistical difference among groups. Na‐K ATPase was increased and Na‐K cotransport was decreased in OVX‐control compared with sham‐control. Na‐K ATPase in OVX‐green tea was significantly decreased compared with OVX‐control (p<0.01) and Na‐K cotransport in OVX‐bamboo and OVX‐green tea was significantly increased compared with OVX‐control (p<0.05). Bone density of OVX‐control was significantly lower than sham‐control (p<0.05). Present study showed that ovariectomy caused an increase in body weight and liver triglyceride and green tea was effective in lowering body weight and triglyceride in ovariectomized rats.