Gypenosides health benefit

Gypenosides are saponins extract derived from Gynostemma pentaphyllum Makino, also known as Jiaogulan. Gypenosides have been used for treating hepatitis and cancer in Asia, particularly China. They inhibit the onset and improve the recovery of liver fibrosis induced by CCl(4) in rats.

Gypenosides and grape seed extract for diabetes
A combination of grape seed-derived procyanidins and gypenosides alleviates insulin resistance in mice and HepG2 cells.
J Food Sci. 2009; College of Food Science and Nutritional Engineering, China Agricultural Univ., Beijing, China.
This study investigated the effects of grape seed-derived procyanidins, gypenosides, and combination procyanidins/gypenosides on insulin resistance in mice and HepG2 cells. Our data suggest that the combination of gypenosides and grape seed-derived procyanidins may have functional efficacy in consumers with insulin resistance.

Gypenosides and cancer cell death
Gypenosides induce apoptosis in human hepatoma Huh-7 cells through a calcium/reactive oxygen species-dependent mitochondrial pathway.
Planta Med. 2007. School of Post-baccalaureate Chinese Medicine, China Medical University, Taichung, Taiwan, Republic of China.
We have previously reported that gypenosides induce apoptosis in human hepatocarcinoma Huh-7 cells through a mitochondria-dependent caspase-9 activation cascade. In order to further explore the critical events leading to apoptosis in gypenoside treated cells, the following effects of gypenosides on components of the mitochondrial apoptotic pathway were examined: generation of reactive oxygen species (ROS), alteration of the mitochondrial membrane potential (MPT), and the subcellular distribution of Bcl-2 and Bax. We propose that the rise in intracellular Ca(2+) concentration plays a pivotal role in the initiation of gypenosides triggered apoptotic death.

Memory and cognitive function
Gypenoside LXXIV Ameliorates Scopolamine-Induced Learning Deficit in Mice.
Planta Med. 2010. Department of Life and Nanopharmaceutical Sciences and Department of Pharmaceutical Science, Kyung Hee University, Dongdaemun-Ku, Seoul, Korea.
Gypenoside LXXIV (G-74), a major constituent of GYNOSTEMMA PENTAPHYLLUM Makino, was isolated and its memory-enhancing effects were investigated in scopolamine-treated mice in passive-avoidance and Morris water maze tests. G-74 potently reversed memory impairment caused by scopolamine. G-74 also significantly shortened the scopolamine-prolonged escape latencies in the Morris water maze test (p < 0.05) and increased the scopolamine-shortened swimming time within the platform quadrant. Based on these findings, G-74 might improve learning deficits.

Which are more potent as antixodiants, catechins from green tea extract or gypenosides from Jiaogulan?
    We have not seen studies comparing them.