首页> 外文会议>Symposium on innovative polymers for controlled delivery: Abstract book. >AN EFFICIENT pH SENSITIVE ORAL INSULIN DELIVERY SYSTEM ENHANCED BY DEOXYCHOLIC ACID
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AN EFFICIENT pH SENSITIVE ORAL INSULIN DELIVERY SYSTEM ENHANCED BY DEOXYCHOLIC ACID

机译:脱氧胆酸增强高效的pH敏感性口服胰岛素输送系统

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摘要

A permeation enhancer, positively charged deoxycholyl-hyperbranched oligoethylenimine (DCO), was prepared and used to form complexes with negatively charged insulin based on electrostatic interaction. DCO/insulin complexes can be loaded into poly (L-glutamic acid) (PGA) microspheres by the oil-in-oil (O/O) emulsion and solvent evaporation technique. Because of the specific pH sensitive properties of PGA, these insulin encapsulated microspheres are stable in the stomach and disaggregate in the small intestine, and the bioavailability of oral insulin administration will be improved due to DCO's permeation enhancement function.
机译:制备渗透增强剂,带正电荷的脱氧胆酰基-超支化低聚亚乙基亚胺(DCO),并基于静电相互作用将其与带负电荷的胰岛素形成复合物。 DCO /胰岛素复合物可通过油包油(O / O)乳液和溶剂蒸发技术装载到聚(L-谷氨酸)(PGA)微球中。由于PGA具有特定的pH敏感特性,这些胰岛素包裹的微球在胃中稳定并在小肠中分解,由于DCO的渗透增强功能,口服胰岛素的生物利用度将得到改善。

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