Evaluation of chitosaneanionic polymers based tablets for extended-release of highly watersoluble drugs

作     者：Yang Shao Liang Li Xiangqin Gu Linlin Wang Shirui Mao 

作者机构：School of PharmacyShenyang Pharmaceutical UniversityShenyang 110016China 

出 版 物：《Asian Journal of Pharmaceutical Sciences》 (亚洲药物制剂科学（英文）)

年 卷 期：2015年第10卷第1期

页      面：24-30页

核心收录：

学科分类：1007[医学-药学(可授医学、理学学位)] 1002[医学-临床医学] 07[理学] 070305[理学-高分子化学与物理] 0703[理学-化学] 

主　　题：Extended-release Chitosan Anionic polymers Sodium valproateeValproic acid 

摘      要：The objective of this study is to develop chitosaneanionic polymers based extendedrelease tablets and test the feasibility of using this system for the sustained release of highly water-soluble drugs with high drug loading.Here,the combination of sodium valproate(VPS)and valproic acid(VPA)were chosen as the model drugs.Anionic polymers studied include xanthan gum(XG),carrageenan(CG),sodium carboxymethyl cellulose(CMC-Na)and sodium alginate(SA).The tablets were prepared by wet granulation method.In vitro drug release was carried out under simulated gastrointestinal condition.Drug release mechanism was studied.Compared with single polymers,chitosaneanionic polymers based system caused a further slowdown of drug release rate.Among them,CS exanthan gum matrix system exhibited the best extended-release behavior and could extend drug release for up to 24 h.Differential scanning calorimetry(DSC)and Fourier transform infrared spectroscopy(FTIR)studies demonstrated that polyelectrolyte complexes(PECs)were formed on the tablet surface,which played an important role on retarding erosion and swelling of the matrix in the later stage.In conclusion,this study demonstrated that it is possible to develop highly water-soluble drugs loaded extendedrelease tablets using chitosaneanionic polymers based system.