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中国药学(英文版) ›› 2014, Vol. 23 ›› Issue (8): 558-564.DOI: 10.5246/jcps.2014.08.072

• 【研究论文】 • 上一篇    下一篇

载舒尼替尼栓塞微球的制备及体外性质研究

赵子明, 李佳林, 杨勇杰, 崔代超, 卢晓静, 范田园*   

  1. 北京大学 药学院药剂学系 天然药物及仿生药物国家重点实验室, 北京 100191 
  • 收稿日期:2013-11-06 修回日期:2013-11-25 出版日期:2014-08-31 发布日期:2013-12-06
  • 通讯作者: Tel.: 86-10-82805123
  • 基金资助:
    State Key Projects (Grant No. 2009ZX09310-001).

Preparation and characterization of sunitinib-loaded microspheres for arterial embolization

Ziming Zhao, Jialin Li, Yongjie Yang, Daichao Cui, Xiaojing Lu, Tianyuan Fan*   

  1. State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China
  • Received:2013-11-06 Revised:2013-11-25 Online:2014-08-31 Published:2013-12-06
  • Contact: Tel.: 86-10-82805123
  • Supported by:
    State Key Projects (Grant No. 2009ZX09310-001).

摘要:

近年来载药微球在栓塞治疗中引起了广泛关注。本研究采用反相悬浮聚合法制备了用于栓塞的聚乙烯醇/丙烯酸微球, 首先筛分出粒径在100-1000 μm范围的微球, 并以舒尼替尼为模型药物, 根据离子交换原理制备出载药微球; 系统地评价了空白微球(B-Ms)和载药微球(SU-Ms)的理化性质: 微球的形态、粒径及其分布、平衡含水量、弹性性质等, 考察了微球的载药和体外释药的规律。结果显示: 微球外观圆整, 载药前后微球的粒径均适用于栓塞, 载药后微球平衡含水量下降, 刚性增加, 载药前后微球的弹性均适于栓塞; 微球载药量和包封率主要受药液浓度的影响, 载药微球在磷酸盐缓冲液(PBS)中缓慢释药, 因此, 舒尼替尼载药微球具有动脉栓塞治疗的潜在应用价值。

关键词: 微球, 栓塞, 舒尼替尼, 缓释

Abstract:

Drug-loaded microspheres have been caused much attention in embotherapy in recent years. In this study, polyvinyl alcohol/acrylic acid microspheres were prepared by inverse suspension polymerization method. Sunitinib malate (SU) was used as a model drug and loaded on microspheres through ion-exchange mechanism. We investigated the characterization of blank microspheres (B-Ms) and sunitinib-loaded microspheres (SU-Ms) in vitro, including morphology, size distribution, equilibrium water content (EWC), elasticity, drug loading and drug release. The result showed that both B-Ms and SU-Ms were spherical withsmooth surface. The particle size of B-Ms and SU-Ms were both suitable for embolization. Compared with that of B-Ms, the EWC of SU-Ms was decreased and the rigidity of SU-Ms was increased. Drug loading and entrapment efficiency ofmicrospheres were mainly affected by the concentration of sunitinib solution than by the size of microspheres. SU-Ms exhibited a sustained release in phosphate buffer solution (PBS). Thus, the SU-Ms may have potential application for arterial embolization.                    

Key words: Microspheres, Embolization, Sunitinib, Sustained release

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