抗氧化效应法研究葛根黄酮微丸的药动学

目的:研究葛根黄酮微丸的药动学。方法:采用抗氧化效应法测定给药后不同时间点大鼠血浆中所含黄酮类成分的抗氧化能力,计算出血浆中黄酮类物质的含量,得到大鼠给药葛根黄酮后血浆中黄酮类物质的含量的变化曲线,得出微丸制剂在体内的药动学过程。结果:葛根黄酮微丸给药后的AUC为愈风宁心片的4.40倍。结论:将葛根黄酮制成微丸能够有效提高葛根中黄酮类物质的生物利用度。

Determined of antioxidant activity and preventing DNA damage effect of peanut polypeptides by chemiluminescence method

To estimate the antioxidant activities of Peanut polypeptides （PPs） by using a chemiluminescence （CL） method in vitro. The scavenging ability of PPs on superoxide anion, hydroxide radical, and hydrogen peroxide was determined by the Pyrogallol-Luminol system, the CuSO4-Phen-Vc-H2O2 system, and the luminol-H2O2 system, respectively. DNA damage preventing the effect of PPs was determined by the CuSO4-Phen-Vc-H2O2-DNA CL system. The results shows that PPs had good effect on the scavenging ability of superoxide anion （IC50=9.68±0.12 mg/ml）. PPs could scavenge hydroxide radical effectively （the IC50 value was 46.06±0.08 μg/ml）. PPs had a good scavenging ability on hydrogen peroxide, which had a relatively low IC50 value （0.17±0.07 mg/ml）. PPs （the IC50 value was0.72±0.11 mg/ml） were powerful on the DNA damage preventing effect. PPs possesses a good scavenging potency on ROS in different systems, but different results exist in different systems.