中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (2): 177-181.doi: 10.3969/j.issn.2095-4344.2017.02.003

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

中空羟基磷灰石复合重组人骨形态发生蛋白2微球体修复骨缺损

唐智明1,熊  龙1,曾建华2,廖新根1,李经堂1,姚爱华3,华福洲4
  

  1. 1江西省人民医院骨一科,江西省南昌市  330006;2赣县人民医院骨科,江西省赣州市  341100;3同济大学材料学与工程学院,上海市  200092; 4南昌大学第二附属医院麻醉科,江西省南昌市  330006
  • 收稿日期:2016-10-26 出版日期:2017-01-18 发布日期:2017-02-27
  • 通讯作者: 熊龙,博士,硕士生导师,江西省人民医院骨一科,江西省南昌市 330006
  • 作者简介:唐智明,男,1982年生,江西省南昌市人,汉族,2014年南昌大学医学院在职研究生毕业,主要从事骨与关节损伤方面的研究。
  • 基金资助:

    江西省科技支撑计划(2009bsb10902)

Hollow hydroxyapatite combined with human bone morphogenetic protein-2 microspheres for bone defect repair

Tang Zhi-ming1, Xiong Long1, Zeng Jian-hua2, Liao Xin-gen1, Li Jing-tang1, Yao Ai-hua3, Hua Fu-zhou4 
  

  1. 1First Department of Orthopaedics, Jiangxi Provincial People’s Hospital, Nanchang 330006, Jiangxi Province, China; 2Department of Orthopaedics, People’s Hospital of Ganxian, Ganzhou 341100, Jiangxi Province, China; 3School of Materials Science and Engineering of Tongji University, Shanghai 20092, China; 4Department of Anesthesiology, the Second Affiliated Hospital of Nanchang University, Nanchang 330066, Jiangxi Province, China
  • Received:2016-10-26 Online:2017-01-18 Published:2017-02-27
  • Contact: Xiong Long, M.D., Master’s supervisor, First Department of Orthopaedics, Jiangxi Provincial People’s Hospital, Nanchang 330006, Jiangxi Province, China
  • About author:Tang Zhi-ming, Master, First Department of Orthopaedics, Jiangxi Provincial People’s Hospital, Nanchang 330006, Jiangxi Province, China
  • Supported by:

    the Science and Technology Plan of Jiangxi Province, No. 2009bsb10902

摘要:

文章快速阅读:

 

文题释义:
中空羟基磷灰石
:2010年姚爱华等首先报道,她们利用锂钙硼玻璃在磷酸盐溶液中的原位转化反应制备表面多孔且中空的羟基磷灰石微球,微球经600 ℃处理后,微球球壳完全由羟基磷灰石晶体组成,并显示出一定的机械强度,球壳的气孔率为85%,平均孔径60 nm,这样的结构使其成为一种良好的贮库型药物释放系统的载体。
Lane-Sandhu X射线评分标准:包括骨形成、骨连接、骨塑形3个方面11项内容。骨形成:0分无骨形成;1分骨形成占缺损25%;2分骨形成占缺损50%;3分骨形成占缺损75%;4分骨形成满缺损。骨连接:0分骨折线清楚;2分骨折线部分存在;4分骨折线消失。骨塑形:0分未见骨塑形;2分骨髓腔形成;4分皮质骨塑形。

背景:羟基磷灰石可以作为一种良好的支架材料,重组人骨形态发生蛋白2是目前活性较强的成骨因子,设计一种复合的新型材料有助于解决骨缺损修复问题。
目的:探索中空羟基磷灰石微球复合重组人骨形态发生蛋白2对兔骨缺损成骨行为和生物力学的影响。
方法:将48只雄性健康成年新西兰白兔随机分3组(n=16),制备桡骨缺损后,复合人工骨组将已经制备好的中空羟基磷灰石/重组人骨形态发生蛋白2复合人工骨植入缺损处,单纯人工骨组植入单纯中空羟基磷灰石人工骨,对照组不植入任何材料。于术后第4,8,12,16周第1天检测血清碱性磷酸酶水平,通过X射线摄片、CT三维重建、放射性核素骨显像及生物力学等评估愈合效果。
结果与结论:①复合人工骨组术后各时间段的血清碱性磷酸酶活性、X射线评分、成骨效果、放射性核素聚集强度、CT三维重建及生物力学强度均优于单纯中空羟基磷灰石人工骨,而对照组显示骨缺损愈合不良;②结果表明,中空羟基磷灰石/重组人骨形态发生蛋白2复合人工骨具有更强的成骨能力和力学强度,加速了骨缺损愈合进程。

关键词: 生物材料, 骨生物材料, 羟基磷灰石, 中空微球, 重组人骨形态发生蛋白2, 人工骨替代物, 骨缺损

Abstract:

BACKGROUND: Hydroxyapatite (HA) is a good scaffold material, and recombinant human bone morphogenetic protein-2 (rhBMP-2) possesses a strong osteogenic ability, therefore, by which preparing a novel composite material will be helpful for bone repair.
OBJECTIVE: To explore the effects of the hollow HA/rhBMP-2 microspheres on the osteogenesis and biomechanics of rabbit bone defects.
METHODS: Forty-eight male healthy adult New Zealand white rabbits were randomly divided into three groups (n=16 per group), including composite, single and control groups. Radical defect models were prepared, and the hollow HA/rhBMP-2 and hollow HA scaffolds were implanted into the composite and single groups, respectively. The control group received no treatment. At the 1st day of 4, 8, 12, and 16 weeks after implantation, the level of serum alkaline phosphatase was detected, and the bone healing was assessed through X-ray, three-dimensional CT, radionuclide bone scan and biomechanics testing, respectively.
RESULTS AND CONCLUSION: The level of serum alkaline phosphatase, X-ray scale scores, osteogetic effect, region of interest volume, three-dimensional CT and biomechanical strength in the composite group were superior to those in the single group. In the meanwhile, the bone healing was unsatisfactory in the control group. Our findings indicate that the hollow HA/rhBMP-2 artificial bone exhibits a good osteogenic ability and mechanical strength, contributing to bone healing.

Key words: Radius Fractures, Hydroxyapatites, Bone Morphogenetic Proteins, Tissue Engineering

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