多层圆柱状微囊的建模和设计,用于内受控释放
bioRxiv : the preprint server for biology
|January 9, 2026
概括
使用计算建模的可控释放药物递送系统可以优化微囊,用于治疗湿性与年龄相关的黄斑变性 (AMD). 这种方法减少了注射频率,改善了患者对长期治疗的遵从性.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 药理学 药理学是指药理学的学科.
背景情况:
- 慢性疾病需要经常服用药物,这会影响患者的药物遵守.
- 目前的湿时与年龄相关的黄斑变性 (AMD) 治疗涉及定期的视内注射,这带来了合规性挑战.
- 控制释放药物递送系统提供了一个解决方案,以减少注射频率和延长治疗药物水平.
研究的目的:
- 开发和验证药物运输在多孔聚合物微囊中的连续扩散模型.
- 研究微囊设计 (单层PCL与双层酸盐-PCL) 对药物释放动态的影响.
- 利用计算建模指导优化用于湿性AMD的长效静脉内药物输送系统.
主要方法:
- 在COMSOL多物理中使用有限元素方法开发了一个连续扩散模型.
- 研究了不同尺寸和盐出度的圆柱形微囊 (多和奇托桑-PCL).
- 采用牛血清白蛋白和贝瓦齐祖马布作为模型药物,使用已公布的释放数据进行参数估计.
主要成果:
- 该模型准确地复制了不同微囊配方的实验性药物释放概况.
- 确定了影响释放动态的关键运输参数,包括多孔性,扭曲性和质量转移率.
- 确定聚合物厚度是控制释放的主要因素,而酸盐层减少了初始爆发并延长了输送.
结论:
- 计算建模为设计和优化可控释放药物递送系统提供了强大的框架.
- 开发的模型将药物释放动力学与特定的设计变量联系起来,促进为湿性AMD创建长效的静脉内膜疗法.
- 这种方法可以显著减少实验力度,并加快为湿 AMD 开发改进的治疗方法.
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