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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (6): 676-685.

• 基础研究 • 上一篇    下一篇

完整大鼠连续间断取血法研究黄芪甲苷的药动学

余俊先1, 张淳文2, 张银娣1, 孙视3, 赵人争2, 韩嘉媛2, 沈建平1   

  1. 1南京医科大学基础医学院药理系, 南京210029, 江苏;
    2南京医科大学公共卫生学院卫生检验系, 南京210029, 江苏;
    3江苏省中国科学院植物研究所, 南京210029, 江苏
  • 收稿日期:2006-04-17 修回日期:2006-07-01 发布日期:2020-11-09

Pharmacokinetics study of astragaloside Ⅳ by intravenous administration with intermittent blood sampling in intact rats

YU Jun-xian1, CHANG Hebron C.2, ZHANG Yin-di1, SUN Shi3, ZHAO Ren-zheng2, HAN Jia-yuan2, SHEN Jian-ping1   

  1. 1Department of Pharmacology, Nanjing Medical University, Nanjing 210029, Jiangsu, China;
    2Center for Hygienic Analysis and Detection, Nanjing Medical University, Nanjing 210029, Jiangsu, China;
    3Institute of Botany, Jiangsu Province &Chinese Academy of Sciences, Nanjing 210029, Jiangsu, China
  • Received:2006-04-17 Revised:2006-07-01 Published:2020-11-09
  • Contact: ZHANG Yin-di, professor, doctoral tutor. Tel Fax: 025-86863159 E-mail:ydzhang @njmu. edu. cn

摘要: 目的:建立黄芪甲苷(astragaloside, AGS-IV)在完整大鼠体内血药浓度的测定方法及初步的药动学评价。方法:运用液质联用仪(HPLC-MS)测定大鼠血浆AGS-IV 浓度。6 只雄性SD 大鼠,AGS-IV 溶液静脉给药(2. 0 mg/kg), 单只大鼠连续取血法, 取血点分别为0. 025、 0. 05、 0.1、 0. 25、 0. 5、 1、 2、 4、 6、 10、 14 和24 h 。固相萃取小柱提取血浆样品, 地高辛为内标(I. S.), LC-ESI-MS 测定血药浓度。AGSIV 的m z 为807. 5, 内标地高辛的m z 为803. 5 。结果:AGS-IV 的标准曲线线性范围为1 ~1 000 ng/mL (r =0. 9992), 日内和日间精密度分别小于6% 和8%, 血浆样品AGS-IV 的回收率为92. 8% ~ 98. 4%, 内标的回收率为80. 0% ~ 90. 9%, 最低检测限为0. 5 ng/mL。CAPP 软件拟合, AGS-IV 的消除符合二室模型, 药动学参数t1/2β (h), CL (L·kg-1 ·h), Vc (L/kg), AUC0-∞(μg·mL-1·h)分别为:3. 46 ±0. 52, 0. 47 ±0. 02, 0. 76 ±0.16 和4274 ± 186 。结论:连续间断取血法结合HPLC-MS 技术, 适用于测定AGS-IV 在小动物的血药浓度和药动学评价。

关键词: 黄芪甲苷, 药动学, HPLC-MS, 完整大鼠

Abstract: AIM:To establish a sensitive method for quantitative determination of astragaloside Ⅳ (AGS-Ⅳ) in plasma and a preliminary evaluation of its pharmacokinetics parameters in intact rats.METHODS:A liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS)was applied for determining AGS-Ⅳ in plasma by using digoxin as the internal standard (I. S.). Six rats were given AGS-Ⅳ 2. 0 mg/kg by intravenous infusion for 5min. Blood samples were drawn intermittently with each intact rat from left femoral artery at 0. 025, 0. 05, 0.1, 0. 25, 0. 5, 1, 2, 4, 6, 10, 14 and 24 h after medication. The samples were prepared by solid phase extraction and analyzed through a triple quadrupole mass spectrometer equipped with an electrospary probe. The samples were monitored in selected ion recording (SIR)mode of positive ions by using target ions at m/z 807. 5 for AS-IV and at m/z 803. 5 for I. S.RESULTS: Calibration curves were linear over the ranges 1-1 000 ng/mL for AGS-Ⅳ (r =0. 9992).The intra-and interday assay variability values were less than 6% and 8%, respectively. Extraction recoveries from plasma were 92. 8% -98. 4% for AGS-Ⅳ and 80. 0% -90. 9% for digoxin, respectively. The lower limit of quantitation (LLOQ)for AGS-Ⅳ was 0. 5 ng/mL. The concentrationtime curves of AGS-Ⅳ for each rat were fitted to an open two-compartment model by CAPP program. The pharmacokinetics parameters of AGS-Ⅳ were as following: the elimination half-life (t1/2β), clearance rate (CL), distribution volume at steady state (Vss), and AUC0-∞ were (3. 46 ±0. 52)h, (0. 47 ±0. 02)L/h, (0. 76 ±0.16) L/kg and (4. 27 ±0.19) μg·mL-1·h, respectively.CONCLUSION:These results show that this method is satisfied for the measurements of pharmacokinetics study for AGS-Ⅳ.

Key words: astragaloside Ⅳ, pharmacokinetics, LC-ESI-MS, intact rats

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