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中国临床药理学与治疗学 ›› 2006, Vol. 11 ›› Issue (1): 62-65.

• 研究原著 • 上一篇    下一篇

不同剂量染料木黄酮及其代谢产物在大鼠尿中的排泄

周四元, 滕增辉, 刘新友, 冉玉华, 杨润涛, 肖毅, 王四旺1 , 梅其炳   

  1. 第四军医大学药理学教研室, 1药物研究所, 西安 710032, 陕西
  • 收稿日期:2005-09-29 修回日期:2005-12-07 出版日期:2006-01-06 发布日期:2020-10-23
  • 通讯作者: 梅其炳, 通讯作者, 男, 教授, 博士生导师, 研究方向:分子药理学。 Tel:029-84774552 E-mail:qbmei@fmmu.edu.cn

Urinary excretion of genistein and its metabolite at different doses in rats

ZHOU Si-yuan, TENG Zeng-hui, LIU Xin-you, RAN Yu-hua, YANG Run-tao, XIAO Yi, WANG Si- wang1, MEI Qi-bing   

  1. Department of Pharmacology , 1Institute of Meteria Medical, The Fourth Military Medical University , Xi' an 710032, Shaanxi, China
  • Received:2005-09-29 Revised:2005-12-07 Online:2006-01-06 Published:2020-10-23

摘要: 目的 :研究不同剂量染料木黄酮及其葡萄糖 醛酸化代谢产物在大鼠尿中的排泄动力学 。方法 : 将染 料 木 黄 酮 制 成 混 悬 液, 按 6 .25 、12 .5 、50 mg·kg -1给大鼠灌胃, 于灌胃后不同时间收集尿液, 用葡萄糖醛酸酶溶液处理尿液 。采用高效液相色谱 法测定尿液中染料木黄酮及其葡萄糖醛酸化代谢产 物的浓度。结果 :6 .25 、12 .5 、50 mg·kg -1 时, 累积以 原形经 尿液排泄的 药物分别为 34 .79 ±10 .83 、 187 .30 ±69 .96 和 213 .56 ±30 .58 μg, 累积经尿液排 泄的总药物( 原形药物+葡萄糖醛酸化药物) 分别为 217 .79 ±52 .06 、583 .05 ±106 .92 和 1108 .37 ±88 .14 μg, 累积经尿液排泄的葡萄糖醛酸化代谢产物分别 占尿液排泄总量的 84 .03 %、67 .88 %和 80 .73 %。 结论:染料木黄酮在大鼠尿液中主要以葡萄糖醛酸 结合形式排泄, 原形及其葡萄糖醛酸化代谢产物的 排泄呈现明显的非线性剂量依赖性特征 。

关键词: 染料木黄酮 , 尿排泄 , 葡萄糖醛酸, 高效液 相色谱

Abstract: AIM:To study the urinary excretion of genistein at different doses in rats .METHODS:Sus- pended in 0 .5 %CMC-Na solution, genistein was orally administered to rats at the dose of 6 .25, 12 .5 and 50 mg·kg -1 , respectively .At various time intervals, the urine was collected .The urine was treated with β-glucu- ronidase.The genistein in urine was extracted twice by vortexing with 2 .0 ml mixture of methyl tert-tubtyl ether and pentane ( v/v =8 ∶2) .The organic phase was re- moved into the tubes and then evaporated in ventilation cabinet .The residue was dissolved in 50 μl of methanol . The solution of 20 μl was drawn and detected by high-per- formance liquid chromatography .RESULTS:The accu- mulative urine excretion of genistein was 34 .79 ±10 .83, 187 .30±69 .96 and 213 .56 ±30 .58 μg at the dose of 6 .25, 12 .5 and 50 mg·kg -1 , respectively .The total drug ( genistein +glucuronidated genistein) excreted from urine was 217 .79 ±52 .06, 583 .05 ±106 .92 and 1108 .37 ±88 .14 μg, and the ratio of glucuronidated genistein was 84 .03 %, 67 .88 % and 80 .73 % at the dose of 6 .25, 12 .5 and 50 mg·kg -1 , respectively . CONCLUSION:The genistein is excreted mainly in the form of glucuronidated genistein in rat urine .The genistein and glucuronidated genistein are excreted in the manner of non-linear dose-dependent .

Key words: genistein , urinary excretion , glucuroni- dation , HPLC

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