摘要
目的:建立一种穗花杉双黄酮在大鼠心、肝、脾、肺、肾、脑、胃、大肠、小肠等组织中的分析方法,并考察大鼠灌服穗花杉双黄酮后在各组织中的分布特性。方法:采用HPLC-UV法测定穗花杉双黄酮在大鼠各组织中的含量。按500 mg·kg-1的剂量灌胃给予大鼠穗花杉双黄酮,分别于给药后10 min、0.5、1、2、4、8、12 h后脱颈椎处死,立即解剖采集心、肝、脾、肺、肾、胃、大肠、小肠、脑等组织。各组织处理后测定其中穗花杉双黄酮的分布情况。结果:各组织在不同范围内线性关系良好,最低检测限0.125 ng,日内日间精密度均小于10%,各组织中穗花杉双黄酮的绝对回收率在75.07%-89.80%之间;相对回收率在92.00%-107.00%之间;各组织中穗花杉双黄酮在-20℃冰箱内保存15天条件下稳定性良好。结论:穗花杉双黄酮在各组织中浓度差异较大,大鼠灌服穗花杉双黄酮主要分布于胃、大肠、小肠、肝、肾中,其次为心、肺、脾中,并可透过血脑屏障分布于脑组织中。
This study was aimed to establish an analysis method of amentotaxus biflavone distribution in rats' tissues, including the heart, liver, spleen, lungs, kidney, brain, stomach, large intestine and small intestine, in order to investigate its distribution characteristics in tissues after rats gavaged with amentotaxus biflavone. HPLC-UV was employed to determine contents of amentotaxus biflavone in rats' tissues. The intragastric administration dose of amentotaxus biflavone was 500 mg.kg-1. Rats were sacrificed by cervical dislocation 10 rain, 0.5, 1, 2, 4, 8, 12 h after intragastric administration. Tissues of the heart, liver, spleen, lungs, kidney, stomach, large intestine, small intestine and brain were removed and dissected immediately. Distribution of amentotaxus biflavone in each tissue was determined after processing. The results showed that tissue in different range had a good linear range. The lowest detection limit was 0.125 ng. The RSD of intra and inter-day was less than 10%. The absolute recovery rate of amentotaxus hiflavone in each tissue was between 75.07% and 89.80%. The relative recovery rate was between 92.00% and 107.00%. Amentotaxus hiflavone in each tissue was stable in different tissues in refrigerator of -20℃ for 15 days. It was concluded that there were relatively large concentration differences of amentotaxus biflavone in different tissues. After intragastric administration, amentotaxus biflavone was mainly distributed in the stomach, large intestine, small intestine, liver and kidney, and then the heart, lungs and spleen. It also distribtlted in brain tissues through the blood-brain barrier.
出处
《世界科学技术-中医药现代化》
2015年第3期536-543,共8页
Modernization of Traditional Chinese Medicine and Materia Medica-World Science and Technology
基金
科学技术部"十二五"国家"重大新药创制"科技重大专项(2013ZX09102-022):降糖新药卷柏黄酮的研究
负责人:郑晓珂