在PLGA颗粒上的粘合性聚电解质涂层延长了对血管损伤的药物保留时间
Yi-Jing Yin1, Xing-Wang Wang1, Wei-Qi Lu1
1MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310058, China.
概括
新的粘合剂颗粒增强了拉巴胺的输送,以防止药物涂层气球治疗后血管再次收窄. 这改善了药物保留,提高了血管阻塞治疗的有效性.
科学领域:
- 生物材料科学 生物材料科学
- 血管生物学 血管生物学
- 药物输送系统 药物输送系统
背景情况:
- 静脉复缩,血管的重新收窄,是药物涂层气球 (DCB) 血管整形术后的一个重大临床挑战.
- 拉巴胺有效预防复原,但患有组织吸收不良和快速清除,限制其治疗潜力.
- 当前的DCB技术面临着在目标部位实现最佳和持续药物保留方面的挑战.
研究的目的:
- 开发一种先进的药物输送系统,以提高拉巴胺素的保留和疗效.
- 为了创建粘合性聚电解质涂层的聚乳糖糖酸 (PLGA) 颗粒,以改善血管壁结合.
- 在体外和体内研究新型涂层对拉巴胺素输送和保留的影响.
主要方法:
- 现场UV触发的聚合被用于合成合剂聚电解质涂层的PLGA纳米颗粒.
- 拉帕米辛被封装在PLGA颗粒中.
- 进行了体外和体外研究,以评估与未涂层颗粒相比的颗粒粘附,药物保留和释放动力学.
主要成果:
- 粘合剂涂层显著增强了通过和共价结合的血管壁结合.
- 与未涂层颗粒相比,在一周内,体外拉巴胺的保留率提高了835%.
- 在体内研究表明,拉巴胺在四周内保持率增加了525%.
结论:
- 与传统方法相比,开发的接涂层PLGA颗粒为拉帕素的输送提供了优越的策略.
- 这种创新方法显著改善了药物保留,解决了当前DCB疗法的关键局限性.
- 增强的输送系统有望提高DCBs在治疗血管阻塞和预防静脉复缩方面的安全性和有效性.
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