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中国药学(英文版) ›› 2015, Vol. 24 ›› Issue (1): 47-53.DOI: 10.5246/jcps.2015.01.006

• 【研究论文】 • 上一篇    下一篇

羟丙基-β-环糊精对水难溶性药物利培酮的包合及促溶作用

马维娜1,2, 谷福根2*, 王毅2, 孟根达来2, 吴春芝2   

  1. 1. 内蒙古医科大学 药学院,  内蒙古 呼和浩特 010110
    2. 内蒙古医科大学附属医院 药剂部,  内蒙古 呼和浩特 010050 
  • 收稿日期:2014-09-18 修回日期:2014-10-17 出版日期:2015-01-15 发布日期:2014-11-06
  • 通讯作者: Tel.: 86-471-6636650, Fax: 86-471-6636650
  • 基金资助:
    Science and Technology Million Project of Inner Mongolia Medical University (Grant No. YKD2014KJBW012).

Complexation of poorly aqueous soluble drug risperidone with hydroxypropyl-β-cyclodextrin enhances its dissolution

Weina Ma1,2, Fugen Gu2*, Yi Wang2, Gendalai Meng2, Chunzhi Wu2   

  1. 1. School of Pharmacy, Inner Mongolia Medical University, Hohhot 010110, China
    2. Department of Pharmacy, Affiliated Hospital, Inner Mongolia Medical University, Hohhot 010050, China
  • Received:2014-09-18 Revised:2014-10-17 Online:2015-01-15 Published:2014-11-06
  • Contact: Tel.: 86-471-6636650, Fax: 86-471-6636650
  • Supported by:
    Science and Technology Million Project of Inner Mongolia Medical University (Grant No. YKD2014KJBW012).

摘要:

考虑到利培酮(RIS)在水中溶解度差及人体内低的口服生物利用度, 本文研究了该药物与HP-β-CD在水溶液中的包合作用; 同时, 温度对包合作用的影响以及包合过程中热力学参数包括吉布斯自由能变化G)、焓变(ΔH)及熵变S)同样被考察。此外, 本文还制备了RISHP-β-CD的固体分散体并采用Fourier红外光谱与X-光衍射法对其进行物相鉴定。研究结果表明, RISHP-β-CD在水溶液中可形成1:1克分子比包合物, 且该包合过程是吸热与熵驱动过程。RIS-HP-β-CD固体分散体表现出显著的药物溶出改善效果, 其原因可能为药物以无定形存在、改善的药物润湿作用以及在水溶液中形成包合物所致。

关键词: 利培酮, HP-β-CD, 包合作用, 固体分散体, 溶出

Abstract:

In the present study, we investigated the complexation of risperidonewith hydroxypropyl-β-cyclodextrin (HP-β-CD) in aqueous solution due to the poor water solubility and low oral bioavailability of risperidone in humans. The effect of temperature on the complexation was examined, and thermodynamic parameters of the complexation process, such as Gibbs free energy changeG), enthalpy change (ΔH) and entropy change (ΔS),were also explored. Meantime, the solid dispersion of risperidonewith HP-β-CD was prepared and confirmed by Fourier IR spectroscopy and X-ray diffractometry. The experimental results suggested that the complex of the drugwith HP-β-CD at a molar ratio of 1:1 could form in aqueous solution, and the complexation was an endothermic and entropy-driven process. The risperidone-HP-β-CD solid dispersion exhibited a remarkable improvement in the dissolution rate of the drug.This might be attributed to the amorphous state, the enhanced wettability as well as the complex formation of the drug with HP-β-CD in aqueous solution.

Key words: Risperidone, HP-β-CD, Complexation, Solid dispersion, Dissolution

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