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天然衍生可注射双交联粘合剂水凝用于急性出血控制和伤口愈合
Ziran Zhu1,2,3, Huijun Ye2, Kaiwen Zhang2
1Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, No. 2 Zhongguancun North First Street, Haidian District, Beijing 100190, China.
Biomacromolecules
|March 25, 2024
概括
一种由凝甲基酸 (GelMA) 和聚-γ-胺酸 (γPGA-NHS) 制成的新型注射水凝提供了快速,强大的组织粘附,以实现有效的血液静止和改善伤口愈合.
科学领域:
- 生物材料科学 生物材料科学
- 再生医学是一种再生医学.
- 手术创新 在外科创新.
背景情况:
- 实现生物相容,可注射的水凝具有高机械强度和快速组织粘附以实现血液静止是一个重大挑战.
- 目前血液静止剂往往缺乏足够的粘附性或生物相容性,以适应严重出血情景.
研究的目的:
- 为了设计一种新的,可注射,可光交叉链接的水凝,具有增强的机械性能和强大的组织粘附性,用于静血应用.
- 与商业纤维素相比,评估开发的水凝的静血效果和伤口愈合潜力.
主要方法:
- 使用凝甲酸盐 (GelMA) 和N-hydroxysuccinimide修饰的聚-γ-胺酸 (γPGA-NHS) 合成了一种可注射的水凝.
- 液凝使用紫外线进行光交联,形成化学双交联网络,具有快速凝和共价组织结合.
- 在各种老鼠损伤模型 (肝脏,脏,大腿动脉) 中评估了静血疗效,并与纤维素相比较.
- 在老鼠中进行了无切的肝缺陷修复,以评估炎症反应,血管生成和愈合疗效.
主要成果:
- 工程化水凝在紫外线照射下表现出快速形成和强大的对组织的共价粘附.
- 与纤维素相比,在老鼠受伤模型中观察到显著改善的静血疗效.
- 在猪肝脏和脏切口以及股骨动脉穿孔模型中,成功实现了血液静止.
- 与纤维素相比,无修复肝脏缺陷显示抑制了炎症,增强了血管生成,并改善了治疗效果.
结论:
- 开发的GelMA/γPGA-NHS水凝是一种有前途的生物粘合剂,具有出色的静血能力和促进伤口修复的潜力.
- 这种新型的水凝为治疗严重出血和促进组织再生提供了对现有止血剂的优质替代品.
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