一种可注射和双交叉连接的水凝,用于控制和永久的血管栓塞
Xin Wang1, Hantao Yang2, Yaoben Wang1
1State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital & School of Stomatology, Fudan University, Shanghai, 200438, China.
Bioactive materials
|July 21, 2025
概括
一种新型的双交联水凝 (DC-gel) 为血管疾病提供了改善的栓塞剂输送. 这种先进的材料为有效的栓塞治疗提供了增强的控制,耐用性和成像能力.
科学领域:
- 生物材料科学 生物材料科学
- 血管外科 血管外科
- 医疗成像医学成像
背景情况:
- 栓塞疗法使用栓塞剂来阻塞血管,用于治疗血管疾病.
- 目前的栓塞材料在有效治疗不同尺寸和复杂结构的血管方面存在局限性,阻碍了可控和持久的栓塞.
- 挑战包括实现精确的交付和目标站点的长期封闭.
研究的目的:
- 开发一种先进的物理/化学双交联水凝 (DC-gel) 作为一种优质的栓塞材料.
- 提高注射能力,机械强度和成像能力,以改善栓塞治疗.
- 解决当前栓塞剂在实现受控和持久的血管封闭方面的局限性.
主要方法:
- 开发一种双交叉链接的水凝 (DC-凝),使用热敏的聚乙烯糖醇-聚乙烯-D-氨基酸共聚合物和三氧化覆盖的四臂聚乙烯糖醇宏分子交叉链接器.
- 加入含有高含量 (>60重量%) 的油性对比剂,用于增强成像.
- 在子动脉,静脉和瘤模型中的体内评估,以评估栓塞的有效性,耐用性和安全性.
主要成果:
- 电流凝系统表现出卓越的注射性和高机械强度,这是由于其双交联机制.
- 在体内研究证实了在各种血管模型中持续的栓塞,没有再通道或非目标效应.
- 集成的对比剂为实时和术后可视化提供了持久的成像.
结论:
- 开发的DC凝是一种有前途的栓塞材料,可以克服当前的治疗限制.
- 它的双交叉连接策略确保了血管栓塞的增强可控性,耐用性和机械稳定性.
- 该材料提供了更好的成像能力和适度的纤维炎症反应,使其适合临床应用.
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