中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (25): 3726-3731.doi: 10.3969/j.issn.2095-4344.2016.25.012

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

玉米醇溶蛋白支架生物相容性及在牙周缺损修复中的应用

李 敏1,王 瑶2,王双双1,李 蓓1,杨 琳1   

  1. 1河北省中医院,河北省石家庄市  0500112河北医科大学第一医院,河北省石家庄市  050030
  • 收稿日期:2016-03-25 出版日期:2016-06-17 发布日期:2016-06-17
  • 通讯作者: 王瑶,河北医科大学第一医院口腔科,河北省石家庄市 050030
  • 作者简介:李敏,女,1979年生,河北省宁晋县人,主治医师,主要从事口腔临床及研究工作。
  • 基金资助:

    河北省中医药管理局科研计划项目(2014028)

Biocompatibility of zein scaffold and its application in periodontal defect repair

Li Min1, Wang Yao2, Wang Shuang-shuang1, Li Bei1, Yang Lin1   

  1. 1 Chinese Medicine Hospital of Hebei Province, Shijiazhuang 050011, Hebei Province, China; 2 First Hospital of Hebei Medical University, Shijiazhuang 050030, Hebei Province, China
  • Received:2016-03-25 Online:2016-06-17 Published:2016-06-17
  • Contact: Wang Yao, First Hospital of Hebei Medical University, Shijiazhuang 050030, Hebei Province, China
  • About author:Li Min, Attending physician, Chinese Medicine Hospital of Hebei Province, Shijiazhuang 050011, Hebei Province, China
  • Supported by:

      the Research Planning Project of Traditional Chinese Medicine Administration of Hebei, No. 2014028

摘要:

文章快速阅读:

 

文题释义:
玉米醇溶蛋白:
属于玉米中的主要蛋白质,具有其特殊的溶解特性、耐热性,选择该蛋白作为牙周缺损支架,能够发挥抑菌性、抗氧化性;同时,玉米醇溶蛋白是可食性全降解食品包装的重要材料之一,在医药及生物等领域均具有广泛的运用前景。
生物相容性:根据国际标准化组织(ISO)会议,生物相容性是指生命体组织对非活性材料产生反应的一种性能,一般是指材料与宿主之间的相容性。生物材料置入人体后,对特定的生物组织环境产生影响和作用,生物组织对生物材料也会产生影响和作用,两者的循环作用一直持续,直到达到平衡或者植入物被去除。

 

摘要
背景:
玉米醇溶蛋白具有优良的溶解性、耐热性及可降解性,但目前对其生物相容性及修复牙周炎缺损的效果尚存在较大争议。
目的:分析玉米醇溶蛋白支架的生物相容性及其修复牙周缺损的效果。
方法:采用溶剂浇铸/粒子沥滤法制备玉米醇溶蛋白支架。①体外实验:将人牙周膜细胞与玉米醇溶蛋白支架共培养18 d,扫描电镜观察细胞生长情况;②体内实验:取8只Beagle犬,制作牙周缺损模型,随机分为2组,实验组在缺损处置入玉米醇溶蛋白支架,对照组间断缝合牙龈组织。术后3个月,扫描电镜观察缺损部位。
结果与结论:①体外实验结果:人牙周膜细胞在支架上附着良好,与支架贴附紧密,呈梭形,能围绕孔隙生长,表明玉米醇溶蛋白支架具有良好的细胞相容性;②体内实验结果:实验组支架完全溶解,骨小梁排列较规则,存在成熟的修复组织且与周围组织融合较好;对照组缺损部位基本愈合,骨纤维排列不规则,存在明显骨陷窝。实验组新生牙槽骨高度、骨缺损高度、结合上皮长度显著低于对照组(P < 0.05),新生牙骨质显著高于对照组(P < 0.05);③结果表明:玉米醇溶蛋白支架具有良好的细胞相容性,可促进牙周缺损的修复。

 

ORCID: 0000-0002-8012-071X(李敏)

关键词: 生物材料, 口腔生物材料, 玉米醇溶蛋白支架, 生物相容性, 牙周炎, 修复效果, 骨纤维, 细胞生长, 上皮长度

Abstract:

BACKGROUND: Zein has excellent solubility, heat resistance and biodegradability, but its biocompatibility and effect on periodontal defects repair are under discussion.

 

OBJECTIVE: To analyze biocompatibility of zein and its effect on periodontal defect repair.

 

METHODS: Zein scaffold was prepared by solvent casting/particulate leaching. In vitro test: Human periodontal ligament cells were co-cultured with zein scaffold for 18 days, and cell growth was observed by scanning electron microscope. In vivo test: Eight Beagle dogs were enrolled to establish periodontal defect models, which were randomly assigned to receive zein scaffold implantation as experimental group, or interrupted suture as control group. Afterwards, the defect region was observed by scanning electron microscope at 3 months.

 

RESULTS AND CONCLUSION: In vitro results: Human periodontal ligament cells adhered well and tightly on the scaffold with a fusiform, and could grow around pores. In vivo results: In the experimental group the scaffold dissolved completely, bone trabecular arranged regularly, and mature tissues appeared, to be integrated with the surrounding tissues; in the control group, the defect region almost healed, but there were irregular fibers and obvious lacunae. Moreover, compared with the control group, the height of new alveolar bone and bone defect, as well as the length of junctional epithelium were significantly decreased, and new cementum was significantly increased in the experimental group (P < 0.05). To conclude, zein scaffold has good biocompatibility and can promote periodontal defect repair.

 

 

 

 

 

Key words: Zein, Materials Testing, Periodontitis, Tissue Engineering

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