中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (42): 6725-6729.doi: 10.3969/j.issn.2095-4344.2015.42.001

• 口腔组织构建 oral tissue construction •    下一篇

杜仲醇提取物对兔下颌牵张成骨的影响

蒋校文,张 翼,范晓升,邓 轩   

  1. 郴州市第一人民医院口腔科&南华大学转化医学研究所,湖南省郴州市 423000
  • 收稿日期:2015-07-14 出版日期:2015-10-08 发布日期:2015-10-08
  • 作者简介:蒋校文,男,1981年生,湖南省东安县人,汉族,2010年华西口腔医学院毕业,博士,副主任医师,主要从事牵张成骨的机制研究。
  • 基金资助:

    国家自然科学基金(81301651)课题名称:硫化氢气体信号体系通过缺氧诱导因子促进牵张成骨的实验研究;郴州市科技局项目(CZ2013067)课题名称:杜仲联合bFGF促进牵张成骨及其机制研究

Effects of eucommia alcohol extract on a rabbit model of mandibular distraction osteogenesis

Jiang Xiao-wen, Zhang Yi, Fan Xiao-sheng, Deng Xuan   

  1. Department of Stomatology, the First People’s Hospital of Chenzhou & Institute of Translation Medicine on University of South China, Chenzhou 423000, Hunan Province, China
  • Received:2015-07-14 Online:2015-10-08 Published:2015-10-08
  • About author:Jiang Xiao-wen, M.D., Associate chief physician, Department of Stomatology, the First People’s Hospital of Chenzhou & Institute of Translation Medicine on University of South China, Chenzhou 423000, Hunan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81301651; the Project of Chenzhou Municipal Department of Science and Technology, No. CZ2013067

摘要:

背景:目前牵张成骨由于治疗周期长、并发症较多成为临床广泛运用的瓶颈,不能满足临床推广需要。
目的:以兔下颌骨牵张动物模型为实验平台,观察全身运用杜仲醇提取物对牵张新骨再生的影响。
方法:24只新西兰大白兔随机均分为对照组及实验组,建立兔下颌单侧牵张模型,牵张速率为每12 h 1 mm。在牵张期2次/d,实验组及对照组分别予以灌胃杜仲醇提取物及等量生理盐水,牵张结束后6周处死动物收集标本行成骨检测。
结果与结论:两组动物牵张间隙内均可观察到新骨生成。牵张成骨结束后6周下颌骨CT图像显示实验组兔牵张间隙舌侧骨皮质生成良好,颊侧骨皮质连续,牵张间隙可见均匀骨质生成桥接;下颌骨核素扫描显示实验组兔下颌骨牵张间隙表现为核浓集,强度明显强于对照组;X射线显示实验组牵张间隙完全桥接,新生成骨质密度均匀,可见上下侧骨皮质形成良好;Micro-CT图像显示实验组骨皮质部分形成较好,骨小梁分布较为均匀,骨小梁明显较对照组粗壮,对照组部分区域仍有囊性变;Micro-CT微结构参数检测显示实验组骨体积分数、骨小梁厚度、骨小梁数量和连接密度均显著高于对照组;组织学观察显示与对照组比较,实验组牵张间隙中有较为成熟的束状骨,骨小梁方向较为规律。实验结果显示全身运用杜仲醇提取物可有效促进兔下颌快速骨牵张的新骨再生。

关键词: 组织构建, 骨组织工程, 杜仲, 兔, 下颌骨, 牵张成骨, 国家自然科学基金

Abstract:

BACKGROUND: Long course of treatment and complications limit the extensive application of distraction osteogenesis, which cannot meet the clinical requirements.
OBJECTIVE: To investigate the effect of general administration of eucommia alcohol extract on new bone regeneration based on the rabbit model of mandibular distraction osteogenesis.
METHODS: Twenty-four New Zealand white rabbits were randomly divided into experimental group and control group. Unilateral mandibular distraction osteogenesis model was established by 1 mm/12 h distraction protocol. During the distraction period, the rabbits in the experimental group were intragastrically administered with eucommia alcohol extract and the control animals received the same amount of physiological saline, respectively. Six weeks later, the animals were sacrificed for osteogenic testing.
RESULTS AND CONCLUSION: New bone formation was observed in the distracted gap in both groups. However, the amount, mineralization and biomechanical strength of new regenerated bone in the experimental group were obviously greater than those in the control group by histological observation, dual energy X-ray 
absorptiometry, micro-CT and biomechanical test. General administration of eucommia alcohol extract can markedly promote distraction osteogensis in rabbit mandibular osteodistraction.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Rabbits, Mandible, Eucommiaceae, Tissue Engineering