中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (5): 657-661.doi: 10.3969/j.issn.2095-4344.2015.05.001

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

构建颅脑损伤合并股骨闭合性骨折大鼠模型:骨痂中降钙素基因相关肽和胰岛素样生长因子1的表达

肖增兵1,陈  通1付爱军1,朱  军1,李建民1,李素花2,孙东良2,于灵灵2,王瑞刚1,宋向奇1   

  1. 1河北联合大学附属医院神经外科,河北省唐山市  063000
    2河北联合大学附属医院曹妃甸区医院,河北省唐山市   063200
  • 修回日期:2014-11-01 出版日期:2015-01-30 发布日期:2015-03-02
  • 通讯作者: 陈通,副主任医师,副教授,河北联合大学附属医院神经外科,河北省唐山市 063000
  • 作者简介:肖增兵,男,1981年生,硕士,主要从事中枢神经系统损伤研究。
  • 基金资助:

    唐山市科技局指令性课题(08130204A-1-12)

Establishment of rat models of brain injury combined with femoral closed fracture: expression of calcitonin gene-related peptide and insulin-like growth factor 1 in bone callus

Xiao Zeng-bing1, Chen Tong1, Fu Ai-jun1, Zhu Jun1, Li Jian-min1, Li Su-hua2, Sun Dong-liang2, Yu Ling-ling2, Wang Rui-gang1, Song Xiang-qi2   

  1. 1Department of Neurosurgery, Hebei United University Affiliated Hospital, Tangshan 063000, Hebei Province, China
    2Caofeidian Zone Hospital, Hebei United University Affiliated Hospital, Tangshan 063200, Hebei Province, China
  • Revised:2014-11-01 Online:2015-01-30 Published:2015-03-02
  • Contact: Chen Tong, Associate chief physician, Associate professor, Department of Neurosurgery, Hebei United University Affiliated Hospital, Tangshan 063000, Hebei Province, China
  • About author:Xiao Zeng-bing, Master, Department of Neurosurgery, Hebei United University Affiliated Hospital, Tangshan 063000, Hebei Province, China
  • Supported by:

    grants from Instructive Program of Tangshan Municipal Science and Technology Bureau, No. 08130204A-1-12

摘要:

背景:合并下肢骨折颅脑损伤患者的骨折手术时机仍存在争论,颅脑损伤后早期骨折加速愈合的机制有待进一步阐明。目前颅脑损伤合并股骨闭合性骨折动物模型的制备报道较少,需建立稳定的动物模型以供临床研究。
目的:制备稳定的颅脑损伤合并股骨闭合性骨折大鼠模型,观察颅脑损伤后大鼠股骨骨折愈合过程中骨痂降钙素基因相关肽和胰岛素样生长因子1的表达,分析脑损伤对大鼠股骨骨折愈合速度的影响机制。
方法:48只雄性Sprague-Dawley大鼠随机分成2组,分别制备颅脑损伤合并股骨骨折模型及单纯股骨骨折模型,每组24只。分别于造模后7,14,28 d分批处死大鼠,截取骨折端长10 mm左右股骨骨痂标本,应用苏木精-伊红染色及免疫组化法,观察降钙素基因相关肽和胰岛素样生长因子1表达的动态变化。
结果与结论:免疫组化法测定两组大鼠骨折位点骨痂中降钙素基因相关肽阳性表达吸光度(A)值及胰岛素样生长因子1阳性细胞百分率,结果显示,颅脑损伤合并骨折组在7,14 d与单纯骨折组比较差异有显著性意义(P < 0.05);造模后28 d两组比较差异无显著性意义(P > 0.05);颅脑损伤合并骨折组的组内比较差异有显著性意义(P < 0.05);单纯骨折组的组内比较差异无显著性意义(P > 0.05)。提示骨折端降钙素基因相关肽、胰岛素样生长因子1在脑损伤后合并股骨骨折模型大鼠骨折愈合的早中期表达增高,有利于多种细胞趋化、增殖与分化,促进成骨。在骨折愈合过程中降钙素基因相关肽和胰岛素样生长因子1可能是脑损伤后促进骨折愈合的影响因素。



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, 颅脑损伤, 股骨骨折, 动物模型, 降钙素基因相关肽, 胰岛素样生长因子1, 免疫组化法

Abstract:

BACKGROUND: The operation time for patients with craniocerebral injury with the lower limb fracture is not conclusive, and the mechanisms associated with the early healing of the fractures after traumatic brain injury remains to be clarified. At present, there are few animals models of brain injury combined with femoral closure fracture, and therefore, a stable animal model is needed for clinical studies.
OBJECTIVE: To establish stable rat models of brain injury combined with femoral closure fracture, to investigate the expression of calcitonin gene-related peptide and insulin-like growth factor 1 in bone callus during the healing process of femoral fracture, and to analyze the mechanism of brain injury on fracture healing.
METHODS: Forty-eight male Sprague-Dawley rats were randomly divided into two groups, in which the models of brain injury combined with femoral fracture and models of femoral fracture were established, respectively. Each group contained 24 rats. Rats were killed at 7, 14, 28 days after injury, a 10 mm femoral callus around the fracture site was cut. The femoral callus specimens were detected with hematoxylin-eosin staining and immunohistochemistry method. The dynamic changes of calcitonin gene-related peptide and insulin-like growth factor 1 expression were observed.
RESULTS AND CONCLUSION: The immunohistochemistry results showed that, the absorbance of calcitonin gene-related peptide positive expression and the percentage of insulin-like growth factor 1 positive cells in bone callus of rats with brain injury and femoral fracture showed significant differences compared with the femoral fracture group at 7 and 14 days (P < 0.05). The difference was not significant between the two groups at 28 days. The intragroup comparison results found significant difference in the brain injury and femoral fracture group (P < 0.05), and no significant difference in the femoral fracture group (P > 0.05). The expression of calcitonin gene-related peptide and insulin-like growth factor 1 was increased at the early and middle stages of fracture healing in rats with brain injury and femoral fracture, which contributes to the proliferation and differentiation of various cells, as well as promoting osteogenesis. Calcitonin gene-related peptide and insulin-like growth factor 1 are the possible factors promoting fracture healing.



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: Brain injury, Femoral Fracture, Models, Animal, Calcitonin Gene-related Peptide, Insulin-like Growth Factor-1

中图分类号: