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中华口腔医学研究杂志(电子版) ›› 2009, Vol. 3 ›› Issue (03) : 280 -286. doi: 10.3877 / cma.j.issn.1674-1366.2009-03-008

基础研究

聚羟基丁酸-羟基戊酸共聚酯膜引导骨组织再生的初步研究
陈建洪1, 唐倩1,(), 吴坚1, 梁焕友1, 徐雄均1, 陈晓峰2, 吴刚2   
  1. 1.510630 广州,中山大学附属第三医院口腔科
    2.510630 广州,华南理工大学材料学研究所
  • 收稿日期:2009-03-02 出版日期:2009-06-01
  • 通信作者: 唐倩
  • 基金资助:
    广东省科技计划项目(2007B031500016)

Preliminarily study of PHBV barrier membrane for guided bone regeneration

Jianhong CHEN1, Qian TANG1,(), Jian WU1, Huang-you LIANG1, Xiong-jun XU1, Xiao-feng CHEN1, Gang WU1   

  1. 1.Department of Stomatology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
  • Received:2009-03-02 Published:2009-06-01
  • Corresponding author: Qian TANG
引用本文:

陈建洪, 唐倩, 吴坚, 梁焕友, 徐雄均, 陈晓峰, 吴刚. 聚羟基丁酸-羟基戊酸共聚酯膜引导骨组织再生的初步研究[J/OL]. 中华口腔医学研究杂志(电子版), 2009, 3(03): 280-286.

Jianhong CHEN, Qian TANG, Jian WU, Huang-you LIANG, Xiong-jun XU, Xiao-feng CHEN, Gang WU. Preliminarily study of PHBV barrier membrane for guided bone regeneration[J/OL]. Chinese Journal of Stomatological Research(Electronic Edition), 2009, 3(03): 280-286.

目的

探讨聚羟基丁酸-羟基戊酸共聚酯(PHBV)膜的生物相容性及其成骨能力。

方法

采用骨髓基质细胞体外培养技术,通过MTT 法检测细胞相对增殖度,对PHBV的细胞毒性进行分级评价;并制备犬胫骨骨缺损模型,观察PHBV 膜引导骨再生的效果。

结果

PHBV 膜的细胞毒性分级为0 ~1 级;PHBV 膜覆盖组术后第2 周即可见新骨形成,12 周时骨缺损区已完全为新骨充填,骨修复质量明显优于对照组。

结论

PHBV 膜对骨髓基质细胞无明显毒性,能引导骨组织再生,有望成为一种较理想的引导骨组织再生的天然膜材料。

Objective

To study the biocompatibility of poly (hydroxybutyratehydroxyvalerate) (PHBV), a novel biopolymer membrane, and evaluate its efficiency of promoting bone regeneration in vivo.

Methods

Cell relative growth rate (RGR) was measured by MTT method to quantitatively evaluate the cytotoxicity of the biomaterials. Eight healthy dogs were used as experimental animals. Four bone defects were made on bilateral tibias in each dog.The PHBV-membrane-guided bone generation effect was assessed by histological observation.

Results

The toxicity gradation of PHBV membrane ranked from grade 0 to grade 1; new bone regeneration was observed in the defects covered with PHBV membranes at 2nd week post-surgery.The defects covered with PHBV membranes were filled with mature bone at 12th week postsurgery. The bone rehabilitation in experimental groups was earlier and better than that in control group.

Conclusion

PHBV membrane, which has no cytotoxicity to MSCs in a wide range of extract concentration, may be applied as a promising biopolymer membrane for guided bone regeneration.

图1 培养MSCs 的生长标准曲线图(MTT 法)
表1 PHBV 膜的细胞毒性实验结果(MTT 法)
图2 PHBV 膜组不同时期的X 线改变 A:2 周; B:4 周; C:8 周; D:12 周
图3 对照组不同时期的X 线改变 A:2 周; B:4 周; C:8 周; D:12 周
图4 PHBV 膜组术后2 周时,可见增厚的骨膜和新生类骨基质(HE ×100)
图5 PHBV 膜组术后4 周时,可见骨小梁细小,排列有序(HE ×100)
图6 PHBV 膜组术后12 周,骨缺损区表层骨皮质形成,其下方骨改建尚未完成(HE ×40)
图7 空白组术后12 周,骨缺损区表面骨皮质缺损明显(HE ×40)
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