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中国药学(英文版) ›› 2018, Vol. 27 ›› Issue (2): 99-108.DOI: 10.5246/jcps.2018.02.011

• 【研究论文】 • 上一篇    下一篇

赤芍总苷纳米混悬剂的制备、表征及药动学评价

张金凤1, 吴凡1, 韩嘉艺1, 荣景宏1, 李艺1, 刘宇1, 梁啸1, 王欣1, 潘昊1, 刘宏生3, 陈立江1,2*   

  1. 1. 辽宁大学 药学院, 辽宁 沈阳 110036
    2. 辽宁省新药研发重点实验室, 辽宁 沈阳 110036
    3. 辽宁大学 生命科学院, 辽宁 沈阳 110036
  • 出版日期:2018-03-03 发布日期:2018-03-01
  • 通讯作者: Tel.: +86-024-62202303, E-mail: chlj16@163.com
  • 基金资助:

    Innovation Team Project (Grant No. LT2015011) from the Education Department of Liaoning Province, Important Scientific and Technical Achievements Transformation Project (Grant No. Z17-5-078) and Applied Basic Research Project (Grant No. F16205144) of Science and Technology Bureau of Shenyang, and the Liaoning Provincial Education Department Project of China (Grant No. L2015192).

Preparation, characterization and pharmacokinetic studies of total paeony glycoside nanocrystals

Jinfeng Zhang1, Fan Wu1, Jiayi Han1, Jinghong Rong1, Yi Li1, Yu Liu1, Xiao Liang1, Xin Wang1, Hao Pan1, Hongsheng Liu3, Lijiang Chen1,2*   

  1. 1. School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
    2. Liaoning Key Laboratory of New Drug Research & Development, Shenyang 110036, China
    3. School of Life Sciences, Liaoning University, Shenyang 110036, China
  • Online:2018-03-03 Published:2018-03-01
  • Contact: Tel.: +86-024-62202303, E-mail: chlj16@163.com
  • Supported by:

    Innovation Team Project (Grant No. LT2015011) from the Education Department of Liaoning Province, Important Scientific and Technical Achievements Transformation Project (Grant No. Z17-5-078) and Applied Basic Research Project (Grant No. F16205144) of Science and Technology Bureau of Shenyang, and the Liaoning Provincial Education Department Project of China (Grant No. L2015192).

摘要:

赤芍总苷是从赤芍中得到的有效部位, 它具有许多的生物学活性。然而, 由于其溶解性差, 生物利用度也非常低, 使其应用受到限制。本研究将赤芍总苷制备成纳米混悬剂以增加溶解度, 提高其口服生物利用度。采用沉淀-高压均质法制备赤芍总苷纳米混悬剂。用动态光散射法(DLS)测定其粒径、Zeta电位分别为(210.2±2.5) nm, (–22.4±1.2) mV。差示扫描量热图(DSC)结果显示, TPG在混悬剂中呈晶体状态, 晶型并未改变。透射电镜(TEM)结果表明赤芍总苷纳米混悬剂呈球状晶体。采用液相色谱串联质谱法(LC-MS/MS)测定赤芍总苷纳米混悬剂在大鼠体内药物动力学参数, 与赤芍总苷混悬液组药物动力学数据相比, AUC0–∞明显增大(1.85), 表明赤芍总苷纳米混悬剂可以提高赤芍总苷的生物利用, 是一种很有前景的给药体系。

关键词: 赤芍总苷, 纳米晶体, 高压均质法, 药物动力学, 生物利用度

Abstract:

Total paeony glycoside (TPG) is obtained from Radix Paeoniae Rubra with a variety of bioactivities. However, the low solubility and bioavailability limit its application. The present study aimed to develop TPG nanocrystals to increase the dissolution and then improve the oral bioavailability. TPG nanocrystals were prepared via precipitation and high-pressure homogenization method. The physical-chemical properties of the optimal TPG nanocrystals in terms of particle size, zeta potential, morphology and crystallinity were evaluated. The results showed that TPG nanocrystals had a mean particle size of (210.2±2.5) nm, a polydispersity index of 0.191±0.033 and a zeta potential of (–22.4±1.2) mV. The result of differential scanning calorimetry showed that the nanocrystals were still in crystalline state after the preparation procedure. Transmission electron microscopy (TEM) results showed that the nanosuspension was in spherical shape. The pharmacokinetics of TPG nanocrystals for rats was investigated by liquid chromatography-tandem mass spectroscopy (LC-MS/MS). Compared with the TPG coarse suspension, TPG nanocrystals exhibited significant increase in AUC0–∞ (approximately 1.85-fold). Taken together, TPG nanocrystals could be used as a promising drug delivery system due to the enhanced oral bioavailability of TPG. 

Key words: Total paeony glycoside, Nanocrystals, High-pressure homogenization, Pharmacokinetics, Bioavailability

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