A novel ion-activated in situ gelling ophthalmic delivery system based on κ-carrageenan for acyclovir

被引：31
|
作者：
Li, Pingfei [1 ]
Wang, Shu [2 ]
Chen, Haoyuan [2 ]
Zhang, Shiming [2 ]
Yu, Shihui [2 ]
Li, Yuenan [2 ]
Cui, Mengsuo [2 ]
Pan, Weisan [2 ]
Yang, Xinggang [2 ]
机构：
[1] Shenyang Pharmaceut Univ, Dept Tradit Chinese Med, Shenyang, Liaoning, Peoples R China
[2] Shenyang Pharmaceut Univ, Dept Pharm, Shenyang, Liaoning, Peoples R China
来源：
DRUG DEVELOPMENT AND INDUSTRIAL PHARMACY | 2018年 / 44卷 / 05期
关键词：
Ophthalmic delivery system; in situ gelling; kappa-carrageenan; HPMC; acyclovir; STRUCTURAL-ANALYSIS; DRUG; CORNEAL; PENETRATION; DEGRADATION; TOXICITY; GELATION; RELEASE; VITRO;
D O I：
10.1080/03639045.2017.1414232
中图分类号：
R914 [药物化学];
学科分类号：
100701 ;
摘要：
The aim of this study was to prepare and evaluate ion-activated in situ gel ophthalmic drug delivery system based on -carrageenan (KC), using acyclovir as a model drug, hydroxypropyl methylcellulose (HPMC) as the viscosity agent and hydroxypropyl--cyclodextrin (HP--CD) as the penetration enhancer. The two ternary phase diagrams exhibited the effect of K+ and Ca2+ on the sol-to-gel transition, which turned out that KC was more sensitive to K+. The optimal ophthalmic matrix (prepared from KC and HPMC) was optimized with in vitro drug release test. The apparent permeability coefficient of acyclovir under 2% HP--CD was found to have dramatically increased (2.16-ploid) than that of conventional eye drops (p<.05). The ion-activated in situ gel based on KC significantly delayed drug release and its bioavailability could be improved in comparison with the conventional eye drops. Hence, it has the potential to be a novel kind of ocular drug delivery system.
引用
收藏
页码：829 / 836
页数：8
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