Studies on the correlation between the content of gypenosides and its vegetative organs and growth period Study on preparation of gypenosides liposomes composed of sphingomyelin and cholesterol and its quality evaluation Effect of gypenosides on RAGE expression and oxidative stress in human mesangial cells induced by AGEs Preparation and characterization of gypenosides liposomes consisted by lecithin and stigmasterol Effects of temperature on growth and total gypenosides accumulation in Gynostemma pentaphyllum and Gynostemma pentagynum Protective effect of gypenosides on expression of neuronal nitric oxide synthase and nucleic acid in hippocampus of vascular dementia rat Protective effect of gypenosides on cerebralcortex and hippocampus in vascular dementiarat Preparation of novel gypenosides long-circulating liposomes consisted by sphingomyelin and β-sitosterol modified by PEG Protective effect of gypenosides on cerebral ischemia-reperfusion injury of hippocampus and dentate gyrus of rat Effects of gypenosides on monoamine oxidase and Na/K-ATPase activities in brain tissues of aging mice