采用薄膜水化法和超声处理制备脱水-复水脂质体系统。
Development of dehydration-rehydration liposomal system using film hydration technique followed by sonication.
机构信息
Department of Pharmaceutics, Laureate Institute of Pharmacy, Kathog-177 101, Teh: Dehra, Distt: Kangra, Himachal Pradesh, India.
出版信息
Curr Drug Deliv. 2014;11(6):763-70. doi: 10.2174/1567201811666140910122945.
The purpose of this study was to prepare and characterize levocetirizine hydrochloride loaded liposome of by film hydration technique followed by sonication. Sorbitol was added to facilitate the hydration of dried liposome into vesicles or to prepare rehydration system. The liposomes were characterized for size, shape, entrapment efficiency, in vitro drug release and stability. The morphology of liposomes was characterized through a phase-contrast microscope and transmission electron microscope. The percent entrapment efficiency and particle size varied between 55.6 ± 0.21 to 81.2 ± 0.52 and 15.73 ± 0.99 to 24.52 ± 0.97 μm, respectively. The drug release increased at higher concentration of phospholipids. On the other hand, the drug release was decreased at higher concentration of cholesterol. The preliminary results of this study suggest that the developed multi-lamellar vesicles containing levocetirizine hydrochloride could enhance drug entrapment efficiency, reduce the initial burst release and modulate the drug release.
本研究的目的是通过薄膜水化技术随后进行超声处理来制备和表征盐酸左西替利嗪负载的脂质体。山梨醇的加入有助于将干燥的脂质体水化为囊泡或制备再水化系统。通过尺寸、形态、包封效率、体外药物释放和稳定性对脂质体进行了表征。通过相差显微镜和透射电子显微镜对脂质体的形态进行了表征。包封效率和粒径的百分比分别在 55.6±0.21 至 81.2±0.52 和 15.73±0.99 至 24.52±0.97μm 之间变化。药物释放率在较高的磷脂浓度下增加。另一方面,药物释放率在较高的胆固醇浓度下降低。本研究的初步结果表明,开发的含有盐酸左西替利嗪的多层层状囊泡可以提高药物包封效率,减少初始突释,并调节药物释放。