文献检索文档翻译深度研究
Suppr Zotero 插件Zotero 插件
邀请有礼套餐&价格历史记录

新学期,新优惠

限时优惠:9月1日-9月22日

30天高级会员仅需29元

1天体验卡首发特惠仅需5.99元

了解详情
不再提醒
插件&应用
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
高级版
套餐订阅购买积分包
AI 工具
文献检索文档翻译深度研究
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利:CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2025

用于延长药物释放的壳聚糖珠交替聚电解质涂层

Alternate polyelectrolyte coating of chitosan beads for extending drug release.

作者信息

Srinatha A, Pandit Jayanta K

机构信息

Department of Pharmaceutics, Institute of Technology, Banaras Hindu University, Varanasi, India.

出版信息

Drug Deliv. 2008 Mar-Apr;15(3):193-9. doi: 10.1080/10717540801952654.


DOI:10.1080/10717540801952654
PMID:18379932
Abstract

In the present study, we addressed the factors modifying ciprofloxacin release from multiple coated beads. Beads were prepared by simple ionic cross-linking with sodium tripolyphoshate and coated with alginate and/or chitosan to prepare single, double, or multilayered beads. The water uptake capacity depended on the nature of beads (coated or uncoated) and pH of test medium. The number of coatings given to the beads influenced ciprofloxacin release rate. The coating significantly decreased the drug release from the beads in comparison to uncoated beads (p < 0.001). When the beads were given three coatings, viz., alginate, chitosan, and again alginate, the drug release appeared to follow the pattern exhibited by colon-targeted drug delivery systems with time dependent release behavior. The increase in coating formed a barrier for easy ingress of dissolution medium into the bead matrix, reducing the diffusion of drug.

摘要

在本研究中,我们探讨了影响环丙沙星从多层包衣微丸中释放的因素。微丸通过与三聚磷酸钠进行简单的离子交联制备,并分别用海藻酸盐和/或壳聚糖包衣,以制备单层、双层或多层微丸。吸水性取决于微丸的性质(包衣或未包衣)以及测试介质的pH值。微丸的包衣层数影响环丙沙星的释放速率。与未包衣微丸相比,包衣显著降低了药物从微丸中的释放(p < 0.001)。当微丸进行三层包衣,即海藻酸盐、壳聚糖,然后再次包衣海藻酸盐时,药物释放似乎呈现出结肠靶向给药系统所具有的随时间变化的释放行为模式。包衣层数的增加形成了一道屏障,阻碍了溶出介质轻易进入微丸基质,从而减少了药物的扩散。

相似文献

[1]
Alternate polyelectrolyte coating of chitosan beads for extending drug release.

Drug Deliv. 2008

[2]
Alginate-coated alginate-polyethyleneimine beads for prolonged release of furosemide in simulated intestinal fluid.

Drug Dev Ind Pharm. 2005-5

[3]
Preparation and characterization of alginate/chitosan formulations for ciprofloxacin-controlled delivery.

J Biomater Appl. 2017-8

[4]
Chitosan coated alginate/poly(N-isopropylacrylamide) beads for dual responsive drug delivery.

Int J Biol Macromol. 2013-4-26

[5]
Oral delivery of insulin from alginate/chitosan crosslinked by glutaraldehyde.

Int J Biol Macromol. 2013-4-6

[6]
Floating-bioadhesive gastroretentive Caesalpinia pulcherrima-based beads of amoxicillin trihydrate for Helicobacter pylori eradication.

Drug Deliv. 2016

[7]
Novel composite blend microbeads of sodium alginate coated with chitosan for controlled release of amoxicillin.

Int J Biol Macromol. 2012-4-24

[8]
Fabrication of microparticle protein delivery systems based on calcium alginate.

J Microencapsul. 2010

[9]
Swelling studies and in vitro release of verapamil from calcium alginate and calcium alginate-chitosan beads.

Int J Pharm. 2006-10-12

[10]
Chitosan coated alginate beads containing poly(N-isopropylacrylamide) for dual-stimuli-responsive drug release.

J Biomed Mater Res B Appl Biomater. 2008-2

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

推荐工具

医学文档翻译智能文献检索