益气健肝颗粒的质量标准研究

目的:建立益气健肝颗粒的质量标准。方法:采用薄层色谱(TLC)法对益气健肝颗粒中的栀子、陈皮、五味子进行定性鉴别;采用高效液相色谱(HPLC)法测定陈皮中橙皮苷的含量:色谱柱为Eclipse XDB-C18(150 mm×4.6 mm,5μm),流动相为乙腈-0.1%磷酸溶液(17∶83,V/V),流速为1.0 ml/min,检测波长为283 nm,柱温为30△。结果:TLC图中,供试品在对照品、对照药材色谱相应位置上显相同颜色的斑点。橙皮苷的质量浓度在0.016⁰.160 mg/ml范围内与其峰面积积分值呈良好的线性关系(r=0.999 7);精密度、稳定性、重复性试验的RSD<2%;平均加样回收率为100.42%,RSD=1.79%(n=9)。结论:所建标准用于益气健肝颗粒的质量控制。     

Chemoprotective effects of hesperidin against genotoxicity induced by cyclophosphamide in mice bone marrow cells

The preventive effect of hesperidin as a flavonoid was investigated in mouse bone marrow cells against genotoxicty induced by cyclophosphamide. Mice were orally (gavages) pretreated with solutions of hesperidin at four different doses (50, 100, 200, and 400 mg/kg b.w.) for five consecutive days. Mice were injected intraperitoneally on the fifth day with cyclophosphamide (50 mg/kg b.w.) and killed after 24 h for the evaluation of micronucleated polychromatic erythrocytes (MnPCEs) and the ratio of PCE/(PCE+NCE) (polychromatic erythrocyte/ polychromatic erythrocyte + normochromatic erythrocyte). Three last doses of hesperidin significantly reduced frequency of MnPCEs induced by cyclophosphamide (p<0.0001). Hesperdin at dose 200 mg/kg b.w. reduced MnPCEs 2.37 time and also completely normalized PCE/ (PCE+NCE) ratio. Histological examination of bone marrow showed that hesperidin affected on proliferation and hyper cellularity of immature myeloid elements in bone marrow that reduced by cyclophsopahmide. It is obvious that hesperidin, may with antioxidative activity, reduced the oxidative stress and genotoxicity induced by cyclophosphamide in mouse bone marrow cells.