用热处理改善植物性支架的生物相容性,用于组织工程
Arvind Ramsamooj1, Nicole Gorbenko1, Cristian Olivares1
1Fred DeMatteis School of Engineering and Applied Science, Hofstra University, Hempstead, NY 11549, USA.
Journal of functional biomaterials
|October 28, 2025
概括
温和的性热处理增强了来自植物的血管支架. 这种修改改善了生物相容性和内皮细胞粘附性,同时保持了潜在的组织工程应用的关键机械特性.
科学领域:
- 生物材料科学 生物材料科学
- 组织工程是组织工程.
- 血管生物学 血管生物学
背景情况:
- 小直径的血管移植面临诸如血栓形成和合规性不匹配等挑战.
- 脱细胞化植物支架为组织工程提供了一个可持续的,生物相容的替代方案.
- 植物生物分子可以触发免疫反应,而有限的可降解性阻碍了临床使用.
研究的目的:
- 为了研究温和的性热处理对脱细胞化皮革叶子viburnum支架的影响.
- 评估这种处理是否可以在不损害机械完整性的情况下改善脚手架的生物相容性和内皮化.
主要方法:
- 脱细胞化皮革叶viburnum脚手架被处理5%的NaOH在30-40°C15-60分钟.
- 评估了机械性能 (抗拉强度,破裂压力),微观结构 (SEM) 和生物相容性 (白细胞和内皮细胞分析).
主要成果:
- 热处理保留了脚手架厚度和>90%的抗拉强度,破裂压力超过了动脉需求.
- 脚手架显示纤维面积分数和直径减少,表面地形变化 (碎形维度减少,/缺口性增加).
- 白血细胞活力增加了多达2.5倍,内皮细胞播种效率提高,通过更长时间的治疗实现了近合流的单层.
结论:
- 温和的性热处理是一种简单,可扩展的方法,用于增强植物衍生的血管支架.
- 这一过程提高了免疫兼容性和内皮质化潜力.
- 经过修改的支架显示了推进组织工程血管移植的前景.
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