Malik Nadia Shamshad, Ahmad Mahmood, Minhas Muhammad Usman
Faculty of Pharmacy and Alternative Medicine, The Islamia University of Bahawalpur, Bahawalpur, Pakistan.
PLoS One. 2017 Feb 28;12(2):e0172727. doi: 10.1371/journal.pone.0172727. eCollection 2017.
To explore the potential role of polymers in the development of drug-delivery systems, this study investigated the use of β-cyclodextrin (β-CD), carboxymethyl cellulose (CMC), acrylic acid (AA) and N' N'-methylenebis-acrylamide (MBA) in the synthesis of hydrogels for controlled drug delivery of acyclovir (ACV). Different proportions of β-CD, CMC, AA and MBA were blended with each other to fabricate hydrogels via free radical polymerization technique. Fourier transform infrared spectroscopy (FTIR) revealed successful grafting of components into the polymeric network. Thermal and morphological characterization confirmed the formation of thermodynamically stable hydrogels having porous structure. The pH-responsive behaviour of hydrogels has been documented by swelling dynamics and drug release behaviour in simulated gastrointestinal fluids. Drug release kinetics revealed controlled release behaviour of the antiviral drug acyclovir in developed polymeric network. Cross-linked β-cyclodextrin and carboxymethyl cellulose hydrogels can be used as promising candidates for the design and development of controlled drug-delivery systems.
为了探索聚合物在药物递送系统开发中的潜在作用,本研究调查了β-环糊精(β-CD)、羧甲基纤维素(CMC)、丙烯酸(AA)和N,N'-亚甲基双丙烯酰胺(MBA)在合成用于阿昔洛韦(ACV)控释的水凝胶中的应用。将不同比例的β-CD、CMC、AA和MBA相互混合,通过自由基聚合技术制备水凝胶。傅里叶变换红外光谱(FTIR)显示各组分成功接枝到聚合物网络中。热学和形态学表征证实形成了具有多孔结构的热力学稳定水凝胶。通过在模拟胃肠液中的溶胀动力学和药物释放行为记录了水凝胶的pH响应行为。药物释放动力学表明所开发的聚合物网络中抗病毒药物阿昔洛韦具有控释行为。交联的β-环糊精和羧甲基纤维素水凝胶可作为设计和开发控释药物递送系统的有前途的候选材料。