中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (8): 1104-1110.doi: 10.3969/j.issn.2095-4344.2016.08.006

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

壳聚糖与海藻酸钙双相陶瓷骨支架的机械性能及细胞相容性

刘 晶,胡 杨,沈玉凤,何雨桐,何惠宇   

  1. 新疆医科大学第一附属医院口腔修复科,新疆维吾尔自治区乌鲁木齐市 830054
  • 收稿日期:2016-01-11 出版日期:2016-02-19 发布日期:2016-02-19
  • 通讯作者: 何惠宇,教授,新疆医科大学第一附属医院口腔修复科,新疆维吾尔自治区乌鲁木齐市 830054
  • 作者简介:刘晶,女,1988年生,河北省新乐市人,汉族,新疆医科大学在读硕士,主要从事骨组织工程支架材料方面相关研究。
  • 基金资助:

    新疆维吾尔自治区科技厅自然科学基金项目(2014211C037):三维打印蛋白复合型陶瓷化骨及颌骨缺损修复能力的实验研究 

Mechanical properties and cytocompatibility of chitosan/ or calcium alginate/ biphasic ceramic bone scaffolds

Liu Jing, Hu Yang, Shen Yu-feng, He Yu-tong, He Hui-yu   

  1. Department of Prosthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Received:2016-01-11 Online:2016-02-19 Published:2016-02-19
  • Contact: He Hui-yu, Professor, Department of Prosthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • About author:Liu Jing, Studying for master’s degree, Department of Prosthodontics, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:

    the Natural Science Foundation of Xinjiang Uygur Autonomous Region, No. 2014211C037

摘要:

文章快速阅读:

文题释义:

双相陶瓷骨:由大量羟基磷灰石和少量β-磷酸三钙经低温锻烧等工艺处理制得,具有天然骨小梁结构及多孔网状结构,不仅可为牙髓细胞重建起支架作用,还为矿化组织形成提供无机离子,具备优良的生物相容性,但机械力学性能不佳。

壳聚糖:由2-氨基-2-脱氧-β-D-葡萄糖通过β-1,4糖苷键聚合的一种天然聚阳离子生物多糖,在体内可被降解为氨基葡萄糖,被人体吸收,具有优良的生物相容性和生物可降解性,具有促进骨细胞和成纤维细胞黏附、分化和增殖,以及引导和促进骨形成的作用,但其存在强度低和在湿态环境下强度损失过快的问题。 

ORCID: 0000-0003-1918-579X(何惠宇)

关键词: 生物材料, 骨生物材料, 双相陶瓷骨粉, 壳聚糖, 海藻酸钙, 骨髓基质细胞, 机械性能

Abstract:

BACKGROUND: Hydroxyapatite/β-tricalcium phosphate biphasic ceramic bone has good cell compatibility, but its mechanical properties are poor.
OBJECTIVE: To construct chitosan/ or calcium alginate/biphasic ceramic bone scaffolds and to detect their mechanical properties and cytocompatibility.
METHODS: Different concentrations of chitosan (2%, 4%, 7%, 10%) or calcium alginate (3%, 4%, 5%, 7%) were mixed with biphasic ceramic bone to prepare chitosan/biphasic ceramic bone scaffold and calcium alginate/biphasic ceramic bone scaffold. Their morphology and structure, coagulation time, anti-dissolution properties, shear force, compressive strength and cell compatibility were detected.
RESULTS AND CONCLUSION: (1) Coagulation time: with the concentration increase, the initial and final setting time of these two kinds of composite scaffolds were prolonged to some extent. (2) Scanning electron microscopy: these two kinds of composite scaffolds showed porous microstructures with different pore sizes. (3) Anti-dissolution properties: the calcium alginate/biphasic ceramic bone scaffold (3%, 4%, 5%, 7%) and chitosan/biphasic ceramic bone scaffold (7%, 10%) had good anti-dissolution properties in the liquid. (4) Mechanical strength: with the concentration increase, the shear force and compressive strength of the calcium alginate/biphasic ceramic bone scaffold were reduced. (5) Cell compatibility: the cytotoxicity of chitosan/ or calcium alginate/biphasic ceramic bone scaffolds was graded as 0-1 or 2-3, respectively. These results show that the chitosan/biphasic ceramic bone scaffold has better mechanical properties and cell compatibility than the calcium alginate/biphasic ceramic bone scaffold.