中国组织工程研究

• 纳米生物材料 nanobiomaterials • 上一篇    下一篇

纳米晶胶原基骨复合骨髓单个核细胞修复下颌骨缺损

吴广新,汪建国,杜晓岩   

  1. 佳木斯大学附属口腔医院整形美容外科,黑龙江省佳木斯市  154000
  • 收稿日期:2012-12-18 修回日期:2013-01-19 出版日期:2013-09-17 发布日期:2013-09-17
  • 通讯作者: 杜晓岩,硕士,主任医师,佳木斯大学附属口腔医院整形美容外科,黑龙江省佳木斯市 154000 dxy00007@163.com
  • 作者简介:吴广新★,男,1987年生,山东省泰安市人,汉族,佳木斯大学在读硕士,主要从事干细胞支架研究工作。 wgx629582@163.com

Bone marrow mononuclear cells combined with nano-hydroxyapatite/collagen for repair of mandibular defects

Wu Guang-xin, Wang Jian-guo, Du Xiao-yan   

  1. Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jiamusi University, Jiamusi  154000, Heilongjiang Province, China
  • Received:2012-12-18 Revised:2013-01-19 Online:2013-09-17 Published:2013-09-17
  • Contact: Du Xiao-yan, Master, Chief physician, Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jiamusi University, Jiamusi 154000, Heilongjiang Province, China dxy00007@163.com
  • About author:Wu Guang-xin★, Studying for master’s degree, Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Jiamusi University, Jiamusi 154000, Heilongjiang Province, China wgx629582@163.com

摘要:

背景:纳米晶胶原基骨复合骨髓单个核细胞可促进各种干细胞生长,诱导新骨形成和成血管化,促进最终成骨。
目的:探讨骨髓单个核细胞复合纳米晶胶原基骨支架材料修复兔下颌骨缺损的可行性。
方法:选择健康新西兰大白兔27只,制备新西兰大白兔双侧下颌骨人工制备骨缺损模型,分为3组,实验组骨缺损处植入自体骨髓单个核细胞复合纳米晶胶原基骨支架材料,对照组骨缺损处植入纳米晶胶原基骨支架材料,空白组骨缺损处不植入任何材料。术后4,8,12周制备组织标本,行大体观察、影像学分析、苏木       精-伊红染色、扫描电镜检测。
结果与结论:影像学检查及组织学染色显示,实验组骨缺损处愈合程度、成骨速度及质量明显优于其他组;扫描电镜显示实验组材料与骨接触紧密,组织相容性好,无炎症刺激反应;分析牙CT数据及新骨形成检测结果表明,实验组骨修复情况优于其他组(P < 0.05)。表明骨髓单个核细胞复合纳米晶胶原基骨支架材料具有骨诱导和骨形成作用,可用于修复颌骨缺损。

关键词: 生物材料, 纳米生物材料, 纳米晶胶原基骨, 骨髓单个核细胞, 新骨形成, 骨, 颌骨缺损

Abstract:

BACKGROUND: Nano-hydroxyapatite/collagen combined with mononuclear cells can promote the growth of a variety of stem cells to induce the formation of new bone and vascularization, finally inducing osteogenesis.
OBJECTIVE: To investigate the feasibility of bone marrow mononuclear cells combined with the nano-hydroxyapatite/collagen for repair of mandibular defects in a rabbit.
METHODS: Twenty-seven New Zealand white rabbits were selected to prepare bilateral mandibular bone defect models, and then divided into three groups. In experiment group, bone marrow mononuclear cells combined with the nano-hydroxyapatite/collagen were implanted into mandibular defects; in control group, nano-hydroxyapatite/collagen scaffold was implanted; and in blank control group, nothing was implanted. Tissue specimens were prepared at weeks 4, 8, 12 for gross observation, imaging analysis, hematoxylin-eosin staining and scanning electron microscope.
RESULTS AND CONCLUSION: The imaging examination and histological staining showed that the bone quality and healing degree in the experimental group was better than those in the other groups. Scanning electron microscope showed that better histocompatibility and no inflammation reaction in the experimental group. Dental CT data showed that the experimental group had better repair effect than the other groups (P < 0.05). These findings indicate that bone marrow mononuclear cells combined with the nano-hydroxyapatite/collagen have capacity of bone induction and bone formation, which can be used to repair mandibular defects.

Key words: biocompatible materials, nanoparticles, collagen, stents

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