华西口腔医学杂志

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原核表达重组人骨形态发生蛋白-7对牙槽骨修复再生的实验研究

卞翠荣1, 肖水清2, 汲平3   

  1. 1.山东大学齐鲁医院口腔科, 山东济南250012; 2.济南市口腔医院修复科, 山东济南250001; 3.山东大学口腔医院修复科, 山东济南250012
  • 收稿日期:2007-08-25 修回日期:2007-08-25 出版日期:2007-08-20 发布日期:2007-08-20
  • 通讯作者: 卞翠荣,Tel:0531- 82169359
  • 作者简介:卞翠荣(1963-),女,山东人,副教授,硕士
  • 基金资助:

    山东省科技攻关基金资助项目(2005GG4202021)

Effect of r ecombinant human bone morphogenetic protein- 7 expr essed in prokaryocyte to augment bone for -mation of alveolar ridge

BIAN Cui- rong1, XIAO Shui- qing2, JI Ping3   

  1. 1. Dept. of Stomatology, Qilu Hospital of Shandong University, Jinan 250012, China; 2. Dept. of Prosthodontics, Stomatological Hospital of Jinan, Jinan 250001, China; 3. Dept. of Prosthodontics, School of Stomatology, Shandong University, Jinan 250012, China
  • Received:2007-08-25 Revised:2007-08-25 Online:2007-08-20 Published:2007-08-20
  • Contact: BIAN Cui- rong,Tel:0531- 82169359

摘要:

目的研究原核表达重组人骨形态发生蛋白- 7(rhBMP- 7)对牙槽骨修复再生的影响。方法采用新西兰白兔建立动物模型,以明胶海绵作为载体,将大肠杆菌原核表达的rhBMP- 7与之复合后植入即刻拔除牙齿的牙槽窝内进行干预治疗,术后2、4、8及12周处死动物,取标本进行大体观察、扫描电镜分析、碱性磷酸酶(ALP)活性测定。结果大体观察结果显示,实验组和对照组牙槽嵴高度的吸收差异有显著性;扫描电镜观测显示,实验组的骨创愈合比对照组大约提前4~6周;ALP活性测定显示实验组均明显高于对照组,其差异有统计学意义(P<0.05)。结论原核表达rhBMP- 7具有促进新骨修复再生、防止牙槽骨吸收的作用。

关键词: 原核表达, 骨形态发生蛋白- 7, 牙槽嵴

Abstract:

Objective To investigate new bone formation of alveolar augmentation with recombinant human bone morphogenetic protein- 7(rhBMP- 7) expressed in prokaryocyte. Methods To create the model of rabbit extraction socket into which the composites of rhBMP- 7 and the gelatin sponge was immediately implanted, then the samples were investigated 2, 4, 8 and 12 weeks postoperatively by gross observation, scanning electron microscope(SEM), quantitative measurement of calcium content and alkaline phosphatase(ALP) activity. Results There was significant difference in height of alveolar ridge absorpted between the experimental groups and the carrier control groups through gross observation. The result of SEM showed that bone healing in rhBMP- 7 groups was 4- 6 weeks earlier than that of control groups. ALP activity in rhBMP- 7 groups were obviously high compared with that of control groups. Conclusion The BMP- 7 has a satisfactory osteoinduction ability to promote new bone formation and prevent alveolar bone absorption.

Key words: prokaryocyte express, bone morphogenetic protein- 7, alveolar ridge