从自愈注射水凝中持续释放德克萨米他:一个体内安全和释放研究
Ada Annala1,2, Amir Sadeghi2, Elisa Toropainen2
1Division of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands.
Molecular pharmaceutics
|September 30, 2025
概括
这项研究开发了一种自我愈合的水凝,用于持续的静脉内甲松输送,在动物模型中显示出良好的眼睛耐受性和药物释放时间长达9周.
科学领域:
- 眼科医生 眼科 眼科
- 生物材料科学 生物材料科学
- 药物输送系统 药物输送系统
背景情况:
- 内皮质类固醇,如德甲治疗眼部疾病,但需要频繁注射,风险并发症.
- 需要持续释放系统来延长德甲的保留时间,并减少注射频率.
研究的目的:
- 在体内评估自愈热敏水凝中释放的甲.
- 评估这种水凝在小鼠和子体内注射后的安全性.
主要方法:
- 通过RAFT聚合合成了一种热敏的ABAtriblock共聚合物,其中包含了一种德克萨米他前药物 (mDEX).
- 形成了一个化学交联的水凝,并使用OCT, fundus成像和LC-MS/MS在体内评估其降解和药物释放.
- 在老鼠和子中通过 fundus成像,OCT和组织学分析评估安全性.
主要成果:
- 在大鼠中,水凝在2-5周内降解,并观察到轻微的注射相关副作用.
- 在子中,水凝表现出良好的耐受性,持续的甲释放可量化9周.
- 在体内释放之后出现了第一阶动力学,半衰期为16.5天.
结论:
- 这种自我愈合的热敏水凝表现出持续的甲释放和良好的眼睛耐受性.
- 这种输送系统是治疗眼部炎症疾病的进一步临床前评估的有希望的候选者.
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