RESUMEN
Objective To investigate the mechanism of anti-aging effect of Yangyan Quban particles on the aging skin. Methods With the dose of D-galactose 1000 mg/(kg?d) by sc administration to the female mice for 42 days, the aging model was established. The mice received Yangyan Quban particles (6.68, 3.34, 1.67 g/kg) by ig administration at the same time of injecting D-galactose. Forty-two days later, the dorsal skin samples were collected to determine glutathione peroxidase (GSH-Px) activity and serum estradiol (E2) contents, and the influence on uterus, ovary, skin dry and wet weight and the amount of water intake were studied. Results Compared with the aged model mice, the GSH-Px activity and E2 contents in the mice treated with Yangyan Quban particles were increased remarkably, especially the medium is the best dose (P