中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (14): 2138-2143.doi: 10.3969/j.issn.2095-4344.2015.14.002

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

骨髓间充质干细胞与同种异体骨复合修复犬下颌骨缺损:成骨能力检测

景彩霞1,刘昌奎2,谭新颖2,罗金超2,胡 敏2   

  1. 1延安大学医学院病原生物学教研室,陕西省延安市 716000;2解放军总医院口腔科,北京市 100853
  • 修回日期:2015-03-16 出版日期:2015-04-02 发布日期:2015-04-02
  • 通讯作者: 胡敏,教授,博士生导师,解放军总医院口腔科,北京市 100853
  • 作者简介:景彩霞,女,1974年生,陕西省延安市人,汉族,2009年四川大学毕业,硕士,讲师,主要从事分子病原生物学研究。
  • 基金资助:

    国家自然科学基金(81470726)

Bone mesenchymal stem cells with allogeneic bone to repair canine mandibular defects: detection of osteogenic ability  

Jing Cai-xia1, Liu Chang-kui2, Tan Xin-ying2, Luo Jin-chao2, Hu Min2   

  1. 1Pathogenic Biology Department of Medical College of Yan’an University, Yan’an 716000, Shaanxi Province, China; 2Department of Stomatology, General Hospital of Chinese PLA, Beijing 100853, China
  • Revised:2015-03-16 Online:2015-04-02 Published:2015-04-02
  • Contact: Hu Min, Professor, Doctoral supervisor, Department of Stomatology, General Hospital of Chinese PLA, Beijing 100853, China
  • About author:Jing Cai-xia, Master, Lecturer, Pathogenic Biology Department of Medical College of Yan’an University, Yan’an 716000, Shaanxi Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81470726

摘要:

 背景:同种异体骨与自体骨有相似解剖外形和生物学特性,是较佳的生物支架材料。自体骨髓来源的间充质干细胞具有多分化潜能,能向成骨、成软骨细胞分化,加速骨组织及软骨组织的形成。

目的:探讨同种异体骨支架复合自体骨髓间充质干细胞促进犬下颌骨半侧缺损的新骨成骨能力。
方法:拔出24只比格犬左侧下颌牙,伤口愈合后2个月,人为造成犬下颌骨缺损,对照组用单纯冻干同种异体骨修复,实验组用同种异体冻干骨加自体骨髓间充质干细胞修复。术后4,12,24周对下颌骨体部进行骨密度扫描以及Micro-CT检查。

结果与结论:实验组移植后12周开始,下颌骨的骨密度显著高于对照组(P < 0.05),随着时间推移,实验组和对照组骨密度均增高,但实验组增高明显高于对照组。随时间推移,实验组骨结构参数成阶梯式递增或递减,对照组虽也有递增或递减,但不明显。术后24周实验组感兴趣区骨小梁分离度大于对照组(P < 0.05),骨体积分数、骨小梁数量、骨小梁厚度小于对照组(P < 0.05)。结果表明骨髓间充质干细胞能加速同种异体骨的骨改建速度。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

关键词: 干细胞, 骨髓干细胞, 骨髓间充质干细胞, 同种异体骨, 下颌骨, 修复重建, 成骨能力, 明胶海绵, 骨密度, 国家自然科学基金

Abstract:

BACKGROUND: Allogeneic bone has anatomical appearance and biological features similar to autogenous bone, which is an excellent biological scaffold material. Mesenchymal stem cells originating from autogenous bone marrow have mutli-lineage differentiation potential, can differentiate into osteoblasts and chondrocyte, and thus can accelerate the formation of bone tissue and cartilage tissue.

OBJECTIVE: To establish the osteogenic ability of allogeneic bone with autogenous bone marrow mesenchymal stem cells for repairing major mandibular defects.
METHODS: The left mandibular teeth of 24 beagles were extracted, and at 2 months after wound healing, mandibular defects were made artificially. The beagles were divided into two groups: control group treated with lyophilized allogeneic bone, and experimental group with autogenous bone marrow mesenchymal stem cells and lyophilized allogeneic bone. Densitometry with CT and Micro-CT was conducted 4, 12, and 24 weeks after surgery.
RESULTS AND CONCLUSION: Compared with the control group, the bone density of the mandible was significantly higher in the experimental group at 12 weeks after transplantation (P < 0.05). Over time, the bone densities in the two groups were both increased, but the bone density in the experimental group was always higher than that in the control group. Bone structure parameters were progressively increased or decreased in the two groups, especially in the experimental group. At 24 weeks after surgery, the degree of trabecular separation in regions of interest was higher in the experimental group than the control group (P < 0.05), but the bone volume fraction, number of trabecular bone, and bone trabecular thickness were significantly lower in the experimental group than the control group (P < 0.05). These findings indicate that bone marrow mesenchymal stem cells are capable of accelerating the reconstruction of allogeneic bones.

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

Key words: Bone Marrow, Mesenchymal Stem Cell Transplantation, Mandible, Bone Remodeling, Transplantation, Homologous

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