...
首页> 外文期刊>Macromolecular symposia >Development and Noninvasive Characterization of Hormone Releasing In Situ Forming Implants
【24h】

Development and Noninvasive Characterization of Hormone Releasing In Situ Forming Implants

机译:激素释放原位形成植入物的开发和非侵入性表征

获取原文
获取原文并翻译 | 示例
           

摘要

In the human body aldosterone plays a major role in the regulation of the salt water balance and the blood pressure. To investigate the pathophysiological effects of aldosterone in a mouse model appropriate drug delivery systems, that release the drug in a constant and continuous manner, are needed. Therefore novel in situ forming implants were developed as alternative aldosterone releasing depots. The non-invasive analytical method electron spin resonance (ESR) spectroscopy was applied to characterize in situ the implant formation by direct and continuous quantification of polymer precipitation and solvent exchange rates. Therewith influences of several key formulation parameters, such as type of the solvent and the polymer have been investigated. In this context AB di- and triblock copolymers of poly(ethylene glycol) (PEG) and poly(lactide-co-glycolide) (PLGA) were firstly explored as polymeric matrices for in situ forming implants. The phase separation kinetics and therewith the aldosterone releases were highly dependent on the hydrophilic character and the molecular weight of the used polymers.
机译:在人体中,醛固酮在调节盐水平衡和血压中起主要作用。为了研究醛固酮在小鼠模型中的病理生理作用,需要合适的药物输送系统,该系统以恒定和连续的方式释放药物。因此,开发了新颖的原位形成植入物作为替代的醛固酮释放库。应用非侵入性分析方法电子自旋共振(ESR)光谱通过直接和连续定量聚合物沉淀和溶剂交换速率来原位表征植入物的形成。因此,已经研究了几种关键配方参数的影响,例如溶剂和聚合物的类型。在这种情况下,首先研究了聚乙二醇(PEG)和聚丙交酯-共-乙交酯(PLGA)的AB二嵌段共聚物和三嵌段共聚物作为原位形成植入物的聚合物基质。相分离动力学以及醛固酮的释放高度取决于所用聚合物的亲水性和分子量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号