DESIGN AND CHARACTERIZATION OF A BIOCOMPATIBLE PHYSICAL HYDROGEL BASED ON SCLEROGLUCAN FOR TOPICAL DRUG DELIVERY
首页> 外文期刊>Carbohydrate Polymers: Scientific and Technological Aspects of Industrially Important Polysaccharides >DESIGN AND CHARACTERIZATION OF A BIOCOMPATIBLE PHYSICAL HYDROGEL BASED ON SCLEROGLUCAN FOR TOPICAL DRUG DELIVERY
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DESIGN AND CHARACTERIZATION OF A BIOCOMPATIBLE PHYSICAL HYDROGEL BASED ON SCLEROGLUCAN FOR TOPICAL DRUG DELIVERY

机译:基于肠杆菌肠杆菌进行局部药物递送的生物相容性物理水凝胶的设计与鉴定

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Highlights ? Carboxymethyl scleroglucan hydrogels are suitable for topical drug delivery ? Drug loading influences the rheological properties of Scl-CM hydrogels ? The release mechanism of the loaded drug was mathematically modelled Abstract Physical hydrogels of a high-carboxymethylated derivative of scleroglucan (Scl-CM300) were investigated as potential systems for topical drug delivery using three different therapeutic molecules (fluconazole, diclofenac and betamethasone). Rheological tests were carried out on drug-loaded hydrogels along with in-vitro release studies in a vertical Franz cell, in order to investigate if and how different drugs may influence the rheological and release properties of Scl-CM300 hydrogels. Experimental results and theoretical modeling highlighted that, in the absence of drug/polymer interactions (as for fluconazole and betamethasone) Scl-CM300 matrices offer negligible resistance to drug diffusion and a Fickian transport model can be adopted to estimate the effective diffusion coefficient in the swollen hydrogel. The presence of weak drug/hydrogel chemical bonds (as for diclofenac), confirmed by frequency sweep tests, slow down the drug release kinetics and a non-Fickian two-phase transport model has to be adopted. In-vivo experiments on rabbits evidenced optimal skin tolerability of Scl-CM300 hydrogels after topical application. ]]>
机译:<![cdata [ 突出显示 羧甲基硬霉素水凝胶适用于局部药物递送 药物载量影响SCL-CM水凝胶的流变性能 加载药物的释放机制在数学上建模 Abstract scleroglucan的高羧甲基化衍生物的物理水凝胶(scl-cm 300 )被研究用三种不同治疗分子(氟康唑,双氯芬酸和倍甲基酮)作为局部药物递送的潜在系统。 流变测试在药物加载的水凝胶中,以及 ITA LIC>释放在垂直的Franz细胞中的研究,以研究不同的药物如何影响SCL-CM的流变和释放性质 300 水凝胶。< / CE:简单 - 段落> 实验结果和理论模型突出显示,在没有药物/聚合物相互作用的情况下(至氟康唑和脂肪链)SCL-CM 300> 300 矩阵为药物扩散提供可忽略不计的耐药性,并且可以采用FICKIAN传输模型来估算溶胀水凝胶中的有效扩散系数。通过频率扫描试验证实的弱药/水凝胶化学键(如双氯胶酸)的存在,减缓药物释放动力学和非Fickian两相传输模型。 in -vivo 兔子的实验证明了scl-cm 300 水凝胶局部应用后。 ]]>

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