期刊
INTERNATIONAL JOURNAL OF PHARMACEUTICS
卷 452, 期 1-2, 页码 108-115出版社
ELSEVIER
DOI: 10.1016/j.ijpharm.2013.04.072
关键词
Diclofenac sodium; Didodecyldimethyl ammonium bromide; Drug-participating catanionic vesicles; Sustained drug release; Hemolytic toxicity
资金
- Natural Science Foundation of Shandong Province [ZR2011BQ003, ZR2011BL017]
- Independent Innovation Foundation of Shandong University (IIFSDU) [2012TS099]
In the present study, the self-assembly properties, aggregation behavior and potential application of mixed samples formed by an active drug (diclofenac sodium, DS) and conventional surfactant (didodecyldimethyl ammonium bromide, DDAB) are investigated with surface tension, transmission electron microscope (TEM), dynamic light scattering (DLS), zeta potential, conductivity, in vitro drug release and hemolytic toxicity measurements. The physicochemical parameters such as critical micelle concentration (CMC), the surface tension at CMC (gamma CMC), the maximum surface excess concentration (Gamma(max)) and the minimum area per molecule headgroup at the air/water interface (A(min)) and degree of counterion binding (beta) are obtained from the surface tension and electrical conductivity measurements. The results show that diclofenac sodium can decrease the surface tension of water and aggregate in the aqueous solution when its concentration is large enough. The CMC and gamma CMC of the DS/DDAB mixed systems are found to have values between that of individual DS and DDAB solutions. TEM and DLS results demonstrate the formation of spherical vesicles in a wide range of the molar ratio of the two components. The amount of charge on the vesicles and their stability can be tuned by controlling the amount of drug and surfactant. To evaluate the potential use of the as-prepared DS/DDAB catanionic vesicles in drug delivery systems, the in vitro drug release and hemolytic toxicity are carried out. The results indicate that both the drug release behavior and the hemolytic toxicity are dependent on the composition of the samples, X-1 (X-1=n(DS)/n((DS+DDAB)), decreasing with the decrease of X-1. The results of this work suggested that the drug-participating catanionic vesicles can be used as a safe and an efficient vehicle for sustained drug release. Copyright (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据