中国组织工程研究 ›› 2018, Vol. 22 ›› Issue (34): 5452-5457.doi: 10.3969/j.issn.2095-4344.0680

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

聚醚醚酮/双相生物陶瓷复合材料修复下颌骨缺损

余和东1,冷卫东1,陈永吉1,倪小兵1,艾 俊1,谭雅琴1,罗 杰2   

  1. 十堰市太和医院(湖北医药学院附属医院),1口腔医学中心,2神经外科,湖北省十堰市 442000
  • 收稿日期:2018-08-25 出版日期:2018-12-08 发布日期:2018-12-08
  • 通讯作者: 罗杰,主任医师,教授,博士生导师,十堰市太和医院(湖北医药学院附属医院)神经外科,湖北省十堰市 442000
  • 作者简介:余和东,男,1985年生,主治医师,硕士,主要从事骨缺损修复材料的研究。
  • 基金资助:

    国家自然科学基金(81671831,51541202)

Repair of mandibular defects with polyetheretherketone/biphase bioceramic composites

Yu Hedong1, Leng Weidong1, Chen Yongji1, Ni Xiaobing1, Ai Jun1, Tan Yaqin1, Luo Jie2   

  1. 1Department of Stomatology, 2Department of Neurosurgery, Taihe Hospital (Affiliated Hospital, Hubei University of Medicine), Shiyan 442000, Hubei Province, China
  • Received:2018-08-25 Online:2018-12-08 Published:2018-12-08
  • Contact: Luo Jie, Chief physician, Professor, Doctoral supervisor, Department of Neurosurgery, Taihe Hospital (Affiliated Hospital, Hubei University of Medicine), Shiyan 442000, Hubei Province, China
  • About author:Yu Hedong, Master, Attending physician, Department of Stomatology, Taihe Hospital (Affiliated Hospital, Hubei University of Medicine), Shiyan 442000, Hubei Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81671831, 51541202

摘要:

文章快速阅读:

 

文题释义:
生物活性陶瓷:生物活性陶瓷通常含有羟基,还可做成多孔性,生物组织可长入并同其表面发生牢固的键合;生物吸收性陶瓷的特点是能部分吸收或者全部吸收,在生物体内能诱发新生骨的生长;生物活性陶瓷具有骨传导性,它作为一个支架,成骨可在其表面进行;它还可作为多种物质的外壳或填充骨缺损。生物活性陶瓷有生物活性玻璃、羟基磷灰石陶瓷、磷酸三钙陶瓷等几种。
骨形成蛋白2:是转化生长因子β超家族成员之一,具备诱导未分化的间充质细胞分化为成骨细胞,能够在骨缺损部位提高骨细胞的活性和增殖能力,具有促进骨的修复与再生的作用,是骨形成蛋白家族中成骨能力最强的因子之一,大量研究都证实其能直接或者间接促进骨组织修复。
 
 
背景:聚醚醚酮具有较好的亲和性和耐腐蚀性,生物学相容性稳定;生物陶瓷材料具有很好的机械性能和生物亲和性,因此结合聚醚酮与双相生物陶瓷制备复合支架材料,可能会促进骨缺损的修复。
目的:探讨聚醚醚酮/双相生物陶瓷复合材料修复兔下颌骨缺损的效果。
方法:将20只新西兰大白兔(购自湖北医药学院动物实验中心)分成4组,对照组不做任何处理,手术组制作下颌骨缺损模型,手术+支架组在下颌骨缺损处植入聚醚醚酮/双相生物陶瓷复合材料,假手术组近暴露臼齿槽后直接缝合。术后4,8,16周取下颌骨标本,分别进行苏木精-伊红染色、Goldner’s三色染色及骨形成蛋白2表达检测。

结果与结论:①苏木精-伊红及Goldner’s三色染色显示,手术+支架组术后第4周开始材料内有成骨细胞在孔隙内生长,至第16周时,材料中已大量分布成骨细胞;手术组术后第4周可见肉芽组织和少量成骨细胞,但成骨细胞数量始终少于手术+支架组;②PCR检测显示,手术+支架组术后8,16周的骨形成蛋白2基因表达高于对照组、手术组(P < 0.05或P < 0.01);③Western Blot检测显示,手术+支架组术后4,8,16周的骨形成蛋白2蛋白表达高于对照组、手术组(P < 0.05或P < 0.01);④结果表明,聚醚醚酮/双相生物陶瓷复合支架材料能够有效促进细胞内骨形成蛋白2表达,进而促进成骨细胞生长和分化,有效修复骨缺损。

ORCID: 0000-0002-6321-9160(余和东)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程

关键词: 聚醚醚酮, 双相生物陶瓷, 下颌骨, 骨修复, 骨形成蛋白2, 生物材料

Abstract:

BACKGROUND: Polyetheretherketone has good affinity and corrosion resistance, and its biocompatibility is stable. Bioceramic materials also have good mechanical properties and bio-affinity. Therefore, polyetherketone can be combined with biphase bioceramics to prepare composite scaffolds that may promote the repair of bone defects. 

OBJECTIVE: To investigate the effect of polyetheretherketone/biphasic bioceramic composites in the repair of rabbit mandibular defects.
METHODS: Twenty New Zealand white rabbits (purchased from the Animal Experimental Center, Hubei University of Medicine, China) were divided into four groups. In the control group, no treatment was given. In the operation group, a mandibular defect model was made in the rabbit. In the composite scaffold group, polyetheretherketone/biphasic bioceramic composite scaffold was implanted into the mandibular defect. In the sham group, the incision was directly sutured after exposing the gingival groove. Mandibular specimens in each group were taken at 4, 8, and 16 weeks after surgery, and hematoxylin-eosin staining, Goldner’s trichrome staining, and bone morphogenetic protein-2 expression were detected.
RESULTS AND CONCLUSION: (1) Results from the hematoxylin-eosin staining and Goldner’s trichrome staining revealed that: in the composite scaffold group, osteoblasts actively grew into the pores at 4 weeks after surgery, and peaked at 16 weeks, while in the operation group, granulation tissues and a small amount of osteoblasts were visible, but the number of osteoblasts was lower relative to the composite scaffold group. (2) PCR results showed that the mRNA expression of bone morphogenetic protein 2 was significantly higher in the composite scaffold group than the control and operation groups at 8 and 16 weeks after surgery (P < 0.05 or P < 0.01). (3) Western blot results indicated that the protein expression of bone morphogenetic protein 2 was significantly higher in the composite scaffold group than the control and operation groups at 4, 8, 16 weeks after surgery (P < 0.05 or P < 0.01). To conclude, the polyetheretherketone/biphasic bioceramic composite scaffold can effectively promote the expression of bone morphogenetic protein 2 in the cells, and then promote the growth and differentiation of osteoblasts, while effectively repairing bone defects.  

Key words: Bone Morphogenetic Proteins, Mandible, Tissue Engineering

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