用生物活性玻尿酸玻璃3D打印的水凝敷料用于连续水化和治疗二度烧伤
Fateme Fayyazbakhsh1,2,3, Michael J Khayat4, Candy Sadler5
1Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, Missouri, USA.
International journal of bioprinting
|March 22, 2024
概括
这项研究开发了3D打印的含有生物活性玻璃酸 (BBG) 的水凝敷料,以改善二级烧伤伤愈合. 用BBG增强的敷料提供了持续的水分,并促进了更快,更完整的组织再生,包括毛囊.
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.
- 组织工程是组织工程.
背景情况:
- 水凝敷料在烧伤治疗中具有好处,但由于长期水分不足,面临着延长愈合和创伤移除等挑战.
- 二级烧伤需要先进的带,以保持水分和促进有效的组织再生.
研究的目的:
- 制造和表征3D打印的含有生物活性玻尿酸玻璃 (BBG) 的水凝敷料,以改善二级烧伤伤愈合.
- 为了评估BBG载荷的水凝敷料的机械性能,水分和细胞活力.
- 评估这些3D打印包裹在老鼠烧伤模型中的活体疗效.
主要方法:
- 基于挤出的3D生物打印凝,酸盐和生物活性玻尿酸玻璃 (BBG) 水凝.
- 离子交联和机械性质的表征,降解和水合.
- 在实验室中使用人类纤维细胞进行细胞活力测试.
- 在第二级烧伤的老鼠模型中,对伤口愈合的体内评估.
主要成果:
- 使用20%重量BBG的3D打印包裹显示Young的模量增加了105%,降解率下降了62%.
- 添加BBG可确保连续释放水长达10天,防止爆裂释放.
- 在体内研究表明,伤口的关闭速度更快,不粘性,非创伤性去除和显著的毛囊再生.
- 组织学分析表明,与对照组相比,复上皮质化和组织重塑有所改善.
结论:
- 结合BBG的3D打印水凝敷料提供持续的水分和增强的机械性能,用于治疗烧伤.
- 生物活性配方和多孔的3D结构协同促进潮湿的伤口愈合和组织再生.
- 这些先进的带代表了一种有希望的解决方案,以改善二级烧伤伤管理的结果.
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