电丝纤维素/纤维素血管支架具有卓越的机械性能和生物相容性,用于组织工程中的应用
Lei Yang1, Xu Wang2, Man Xiong3
1Department of Surgical Base, Guangdong Second Provincial General Hospital, Guangzhou, China.
Scientific reports
|February 16, 2024
概括
研究人员开发了一种用于血管组织工程的丝纤维素和纤维素复合基架. 这种电脚手架表现出更好的机械强度和生物相容性,使其成为人工血管的有希望的候选人.
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.
- 血管组织工程 血管组织工程
背景情况:
- 电支架对于再生医学和血管组织工程至关重要.
- 机械性能对于工程血管移植的成功至关重要,特别是对于直径小的血管.
- 纤维素的不良机械性能限制了其在血管应用中的使用.
研究的目的:
- 开发一种丝纤维素 (SF) 和纤维素复合脚手架,使用电.
- 模仿自然血管支架的结构和功能特性.
- 为了克服纯纤维素支架的机械限制.
主要方法:
- 通过电来制造SF/纤维素复合结构架,其SF:纤维素比率可变 (0:100, 15:85, 25:75, 35:65).
- 综合的体外表征包括形态学,机械性质,水友性,血液相容性,降解性,细胞相容性和生物相容性.
- 在体内皮下植入SF/纤维素 (25:75) 支架以评估降解和组织相容性.
主要成果:
- SF/纤维素支架呈现出光滑,均的纤维结构,直径小.
- 与纯纤维素相比,复合脚手架显示出明显增强的机械强度,相应的水友性下降.
- 所有的SF/纤维素支架都显示出出色的血红相容性和适当的降解率.
- SF/纤维素 (25:75) 支架促进了中酶干细胞 (MSC) 的增殖和粘附.
- 在体内研究证实,与SF支架相比,SF/纤维素 (25:75) 的降解速度更快,促进组织再生和细胞透.
结论:
- 该SF/纤维素 (25:75) 电支架提供平衡和可控制的生物力学特性和可降解性.
- 这种复合脚手架表现出良好的细胞兼容性,并促进组织再生.
- 开发的SF/纤维素支架是人工血管应用的理想候选材料.
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