中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (18): 2800-2806.doi: 10.3969/j.issn.2095-4344.2015.18.003

• 器官移植动物模型 organ transplantation and animal model • 上一篇    下一篇

构建股骨骨折合并脑损伤模型大鼠低氧诱导因子1α和核心结合因子α1的表达

柏小金1,徐  林1,骆旭东2,刘福英2,黄文良1,郭  元1,马立坤1,程小菊1,柏  猛1   

  1. 1遵义医学院第三附属医院骨科一病区,贵州省遵义市  563000;2深圳市南山医院,广东省深圳市  518000
  • 出版日期:2015-04-30 发布日期:2015-04-30
  • 通讯作者: 骆旭东,博士,主任医师,硕士生导师,深圳市南山医院,广东省深圳市 518000
  • 作者简介:柏小金,男,1979年生,贵州省遵义市人,汉族,遵义医学院在读硕士,主治医师。
  • 基金资助:

    遵义市科技局资助项目[遵市科合社字(2011)19号]

Expression of hypoxia-inducible factor 1 alpha and core binding factor alpha 1 in rat models of femoral fracture combined with cerebral trauma

Bo Xiao-jin1, Xu Lin1, Luo Xu-dong2, Liu Fu-ying2, Huang Wen-liang1, Guo Yuan1, Ma Li-kun1, Cheng Xiao-ju1, Bo Meng1   

  1. 1The First Endemic Area, Department of Orthopedics, the Third Affiliated Hospital, Zunyi Medical College, Zunyi 563000, Guizhou Province, China; 2Shenzhen Nanshan Hospital, Shenzhen 518000, Guangdong Province, China
  • Online:2015-04-30 Published:2015-04-30
  • Contact: Luo Xu-dong, M.D., Chief physician, Master’s supervisor, Shenzhen Nanshan Hospital, Shenzhen 518000, Guangdong Province, China
  • About author:Bo Xiao-jin, Studying for master’s degree, Attending physician, the First Endemic Area, Department of Orthopedics, the Third Affiliated Hospital, Zunyi Medical College, Zunyi 563000, Guizhou Province, China
  • Supported by:

    the Zunyi Municipal Science and Technology Bureau Project, No. (2011)19

摘要:

背景:骨折及脑损伤后造成的低氧环境导致一系列相关因子的表达,包括低氧诱导因子1α和核心结合因子α1,二者在骨折愈合中具有重要的调控作用。但骨折合并脑损伤后骨折愈合加速是否与低氧诱导因子1α和核心结合因子α1的表达相关还不十分清楚。
目的:构建脑损伤大鼠模型,对低氧诱导因子1α和核心结合因子α1在大鼠股骨骨折合并脑损伤及单纯股骨骨折模型的骨折愈合过程中表达的对比,评价脑损伤对骨折愈合的影响。
方法:将大鼠随机分为空白组、单纯股骨骨折组和股骨骨折合并脑损伤组。造模后1,2,3,5周处死动物,通过股骨骨折断端X射线评分及骨痂组织进行苏木精-伊红染色评价模型大鼠不同时间点骨折愈合情况,通过免疫组织化学检测,评价3组低氧诱导因子1α和核心结合因子α1的表达。
结果与结论:股骨骨折合并脑损伤组的骨折愈合情况优于单纯股骨骨折组。单纯股骨骨折和股骨骨折合并脑损伤两组的组内1,2,3,5周低氧诱导因子1α和核心结合因子α1的表达比较,差异有显著性意义(P < 0.05);同一时间段组间比较,单纯股骨骨折组和股骨骨折合并脑损伤组均明显高于空白组,股骨骨折合并脑损伤组高于单纯股骨骨折组(P < 0.05)。结果证实,骨折合并脑损伤模型大鼠低氧诱导因子1α和核心结合因子α1表达更为突出,这可能是骨折合并脑损伤后骨折愈合加速的重要原因。



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


全文链接:

关键词: 实验动物, 骨及关节损伤模型, 低氧诱导因子1α, 核心结合因子α1, 股骨, 骨折, 脑损伤, X射线;骨折愈合, 大鼠, 加速

Abstract:

BACKGROUND: The low oxygen environment after femoral fracture and cerebral trauma will induce series of related cytokines expression, including hypoxia-inducible factor 1α and core binding factor α1, which play key roles in regulating bone healing. However, whether the accelerated bone healing is correlated with the expression of hypoxia-inducible factor 1α and core binding factor α1 is still unknown.
OBJECTIVE: To construct rat models of brain injury, to compare the expression level of hypoxia-inducible factor 1α and core binding factor α1 in femoral fracture combined with cerebral trauma rats and simple femoral fracture rats, and to assess the influence of cerebral trauma on bone healing.
METHODS: Rats were randomly divided into blank group, simple femoral fracture group and femoral fracture combined with cerebral trauma group. At 1, 2, 3 and 5 weeks after modeling, rats were executed. Bone healing was evaluated using femoral fracture end X-ray score and hematoxylin and eosin staining at callus tissues. Besides, the expression levels of hypoxia-inducible factor 1α and core binding factor α1 of three groups were  
determined with immunohistochemistry.
RESULTS AND CONCLUSION: Bone healing in the femoral fracture combined with cerebral trauma group was better than that of simple femoral fracture group. There was significant difference in the expression level of hypoxia-inducible factor 1α and core binding factor α1 between the simple femoral fracture group and femoral fracture combined with cerebral trauma group (P < 0.05). At the same time, the level of simple femoral fracture group and femoral fracture combined with cerebral trauma group was significantly higher than that of blank group, and that in femoral fracture combined with cerebral trauma group was significantly higher than that of simple femoral fracture group (P < 0.05). Results verified that the expression levels of hypoxia-inducible factor 1α and core binding factor α1 of rats with femoral fracture combined with cerebral trauma were significantly high, which may be the major reason why the bone healing was accelerated after fracture combined with brain injury.



中国组织工程研究
杂志出版内容重点:肾移植肝移植移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植组织工程


全文链接:

Key words: Tissue Engineering, Femur, Fractures, Bone, Fracture Healing

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