中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (2): 184-189.doi: 10.3969/j.issn.2095-4344.1505

• 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包裹血管内皮生长因子修复下颌骨缺损

余和东1,陈永吉1,毛 敏1,陈绍娟1,倪小兵1,冷卫东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:2018-08-13 出版日期:2019-01-18 发布日期:2019-01-18
  • 通讯作者: 罗杰,主任医师,教授,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,湖北省丹江口市人,汉族,2013年中国医科大学毕业,硕士,主治医师,主要从事骨缺损修复材料的基础研究。
  • 基金资助:

    国家自然科学基金(51541202,项目负责人:冷卫东;81671831,项目负责人:罗杰)

Polyetheretherketone/biphasic bioceramic composite coated with vascular endothelial growth factor to repair mandibular defects

Yu Hedong1, Chen Yongji1, Mao Min1, Chen Shaojuan1, Ni Xiaobing1, Leng Weidong1, Luo Jie2   

  1. 1Department of Stomatology, 2Department of Neurosurgery, Taihe Hospital (Affiliated Hospital of Hubei University of Medicine), Shiyan 442000, Hubei Province, China
  • Received:2018-08-13 Online:2019-01-18 Published:2019-01-18
  • Contact: Luo Jie, Chief physician, Professor, Department of Neurosurgery, Taihe Hospital (Affiliated Hospital of Hubei University of Medicine), Shiyan 442000, Hubei Province, China
  • About author:Yu Hedong, Master, Attending physician, Department of Stomatology, Taihe Hospital (Affiliated Hospital of Hubei University of Medicine), Shiyan 442000, Hubei Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 51541202 (to LWD) and 81671831 (to LJ)

摘要:

文章快速阅读:

 

文题释义:
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,成骨在其表面进行;其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。
血管内皮生长因子:是一种高度特异性的促血管内皮细胞生长因子,具有促进血管通透性增加、细胞外基质变性、血管内皮细胞迁移、增殖和血管形成等作用,特别是在低氧环境下能促进血管增生。血管内皮生长因子通过提高血浆酶原活化因子和血浆酶原活化因子抑制因子ⅠmRNA的表达,提高血浆酶原活化因子的活性,促进细胞外蛋白水解,进而促进新生毛细血管的形成。

背景:前期研究证实,聚醚醚酮/双相生物陶瓷复合材料具有良好的生物相容性、理想孔隙率和力学性能,可满足非承重区骨缺损的修复要求。
目的:进一步观察包裹血管内皮生长因子的聚醚醚酮/双相生物陶瓷复合材料修复下颌骨缺损的效果。
方法:将36只新西兰大白兔随机分成4组,每组9只,对照组不进行任何处理;模型组制作下颌骨缺损模型;假手术组只复制模型组手术过程,不制作骨缺损;支架组将包裹血管内皮生长因子的聚醚醚酮/双相生物陶瓷复合材料植入下颌骨缺损部位。术后4,8,16周取下颌骨标本,进行苏木精-伊红染色与Van Gieson染色,观察骨缺损修复情况;PCR、Western blot和免疫荧光检测血管内皮生长因子表达情况。
结果与结论:①苏木精-伊红染色显示,对照组和假手术组骨结构完整,模型组术后16周内的骨缺损部位无明显变化;术后8,16周,支架组支架边缘出现成骨细胞;②Van Gieson染色显示,对照组和假手术组骨结构完整,造模组术后16周内的骨缺损部位无明显变化;术后8,16周,支架组支架边缘出现成骨细胞,未见明显的胶原纤维;③术后4周,3组血管内皮生长因子表达无差异;术后8,16周,模型组血管内皮生长因子表达低于对照组(P < 0.05),支架组血管内皮生长因子表达高于对照组(P < 0.05);④结果表明,聚醚醚酮/双相生物陶瓷复合材料包裹血管内皮生长因子修复下颌骨缺损,可提高组织内血管内皮生长因子的表达,促进骨再生。
ORCID: 0000-0002-6321-9160(余和东) 

关键词: 血管内皮生长因子, 聚醚醚酮, 生物陶瓷, 骨缺损, 生物材料, 国家自然科学基金

Abstract:

BACKGROUND: Previous studies have confirmed that polyetheretherketone/biphasic bioceramic composites have good biocompatibility, ideal porosity and mechanical properties, which can meet the repair requirements of non-load bearing bone defects.

OBJECTIVE: To further observe the effect of polyetheretherketone/biphasic bioceramic composite coated with vascular endothelial growth factor in the repair of mandibular defects.
METHODS: Thirty-six New Zealand white rabbits were randomly divided into four groups, nine in each group. The control group did not undergo any treatment. A mandibular defect model was made in the model group. The sham operation group only replicated the surgical procedure of the model group but did not make bone defects. In the scaffold group, the polyetheretherketone/biphasic bioceramic composite coated with vascular endothelial growth factor was implanted into the mandibular defect site. Mandibular specimens were taken at 4, 8, and 16 weeks after operation. Hematoxylin-eosin staining and Van Gieson staining were performed to observe the repair of bone defects. The expression of vascular endothelial growth factor was detected by PCR, western blot and immunofluorescence.

RESULTS AND CONCLUSION: (1) Hematoxylin-eosin staining results showed that the bone structure was intact in the control group and the sham operation group, and the bone defect in the model group did not change markedly within 16 weeks after operation; at 8 and 16 weeks after operation, osteoblasts appeared at the scaffold edge of the scaffold group. (2) Van Gieson staining results showed that the bone structure was intact in the control group and the sham operation group, and there was no significant change in the bone defect within 16 weeks after operation; at 8 and 16 weeks after operation, osteoblasts appeared at the scaffold edge of the scaffold group, but not collagen fibers produced. (3) At 4 weeks after operation, there was no difference in the expression of vascular endothelial growth factor among the three groups; at 8 and 16 weeks after operation, the expression of vascular endothelial growth factor in the control group was higher than that in model group (P < 0.05), but lower than that in the scaffold group (P < 0.05). In conclusion, polyetheretherketone/biphasic bioceramic composites coated with vascular endothelial growth factor to repair mandibular defects can increase the expression of vascular endothelial growth factor and promote bone regeneration. 

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

Key words: Ceramics, Vascular Endothelial Growth Factors, Tissue Engineering

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