中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (21): 3104-3109.doi: 10.3969/j.issn.2095-4344.2016.21.009

• 纳米生物材料 nanobiomaterials • 上一篇    下一篇

纳米纤维素蛋白和脱细胞基质修复口腔黏膜

王忠朝1,2,范丽苑1,3,蔡 炜1,3,蒋俊强1,2   

  1. 1西南医科大学口颌面修复重建和再生实验室,四川省泸州市 646000;西南医科大学附属口腔医院,2牙周黏膜科,3修复科,四川省泸州市 646000
  • 收稿日期:2016-02-26 出版日期:2016-05-20 发布日期:2016-05-20
  • 通讯作者: 范丽苑,西南医科大学口颌面修复重建和再生实验室,西南医科大学附属口腔医院修复科,四川省泸州市 646000
  • 作者简介:王忠朝,男,1980年生,四川峨眉山市人,硕士,主治医师。
  • 基金资助:

    四川医科大学口腔医学院省级大学生创新训练计划项目(201510632020);四川医科大学口腔医学院校级大学生创新训练计划项目(2015131);四川医科大学附属口腔医院院级课题;四川医科大学2015年国家级大学生创新创业训练计划项目(201510632020);西南医科大学附属口腔医院院级课题(201507)

 Nano-cellulose protein versus acellular matrix in oral mucosa repair

Wang Zhong-chao1, 2, Fan Li-yuan1, 3, Cai Wei1, 3, Jiang Jun-qiang1, 2   

  1. 1Orofacial Reconstruction and Regeneration Laboratory of Southwest Medical University, Luzhou 646000, Sichuan Province, China; 2Department of Periodontics & Oral Medicine, 3Department of Prosthodontics, Affiliated Hospital of Stomatology of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Received:2016-02-26 Online:2016-05-20 Published:2016-05-20
  • Contact: Fan Li-yuan, Orofacial Reconstruction and Regeneration Laboratory of Southwest Medical University, Luzhou 646000, Sichuan Province, China; Department of Prosthodontics, Affiliated Hospital of Stomatology of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • About author:Wang Zhong-chao, Master, Attending physician, Orofacial Reconstruction and Regeneration Laboratory of Southwest Medical University, Luzhou 646000, Sichuan Province, China; Department of Periodontics & Oral Medicine, Affiliated Hospital of Stomatology of Southwest Medical University, Luzhou 646000, Sichuan Province, China
  • Supported by:

    the Provincial Students Innovative Training Program of the Stomatological School in Sichuan Medical University, No. 201510632020; the Students Innovative Training Program of the Stomatological School in Sichuan Medical University, No. 2015131; the Project of Affiliated Stomatology Hospital of Sichuan Medical University; the National Students Innovative Training Program of Sichuan Medical University in 2015, No. 201510632020; the Project of Affiliated Stomatology Hospital of Southwest Medical University, No. 201507

摘要:

 文章快速阅读:

文题释义:
纳米纤维素蛋白:
其结构与人体头发、皮肤等十分接近,且该材料具有天然的组织相容性、可调节下及可塑性,能够有效的促进细胞的黏附,提高口腔缺损部位修复效果。同时,纳米纤维素蛋白能够有效的减轻炎症反应,能够为口腔黏膜缺损修复提供新的思路和方向。
脱细胞真皮基质:是一种新型组织代替物。这种基质是用物理、化学等方法将皮肤中的表皮层及细胞成分彻底去除,仅保留真皮中含胶原网架的细胞外基质而得到的,具有创面覆盖、组织缺损填充、引导组织再生和支架等作用。脱细胞真皮基质由于完全没有了细胞成分和Ⅰ,Ⅱ型细胞相容性抗原的主要免疫活性,故一般不会诱发排斥反应。但脱细胞真皮基质保留有正常胶原的三维结构和真皮中含胶原支架的细胞外基质,能为组织细胞的再生提供一个良好的支架结构。

背景:口腔黏膜的敏感性和分泌黏液的功能等增加了口腔软组织修复难度,患者修复后其形态和功能难以达到预期的修复效果。纳米纤维素蛋白主要由甘氨酸、丙氨酸以及丝氨酸等组成,该材料具有良好的组织相容性。但是,目前临床上对于纳米纤维素蛋白和脱细胞基质在口腔黏膜修复中效果效果比较研究较少,且临床上对于两种材料修复效果尚存在较大争议。
目的:观察纳米纤维素蛋白和脱细胞基质在口腔黏膜修复中的应用,比较两种不同修复材料的效果。
方法:建立缺口黏膜缺损模型大鼠,建模后随机分为4组,对照组大鼠采用凡士林油修复,纳米纤维素蛋白组大鼠采用纳米纤维素蛋白修复,牛脱细胞基质组采用牛皮肤组织脱细胞基质修复,人脱细胞基质组则利用人皮肤组织脱细胞基质修复。各组大鼠进行2个月观察,比较不同材料下大鼠口腔黏膜中的修复效果。
结果与结论:①口腔黏膜缺损直径:采用游标卡尺对4组口腔黏膜修复进行测量,各组大鼠术后1 d口腔黏膜缺损直径差异无显著性意义(P > 0.05),纳米纤维素蛋白组大鼠术后3,5,7 d口腔黏膜缺损直径显著低于其他3组(P < 0.05),牛脱细胞基质组和人脱细胞基质组在术后5,7 d口腔黏膜缺损直径显著低于对照组(P < 0.05);②口腔黏膜组织形态:光学显微镜下观察显示,纳米纤维素蛋白组、牛脱细胞基质组和人脱细胞基质组在术后1,3,5,7周口腔黏膜缺损部分新生组织中毛细血管内皮数差异无显著性意义(P > 0.05);纳米纤维素蛋白组、牛脱细胞基质组和人脱细胞基质组与对照组相比差异有显著性意义(P < 0.05);纳米纤维素蛋白组术后21 d新生上皮较厚,排列比较紧密;牛脱细胞基质组术后21 d缺损部位修复良好,新生上皮存在,炎性细胞减少;人脱细胞基质组存在明显炎性细胞,存在新生上皮组织,厚度一般;对照组修复21 d后炎性细胞较多,上皮组织较薄。③结果说明,纳米纤维素蛋白材料和脱细胞基质能促进口腔黏膜上皮增生,加快创面愈合。

 

ORCID: 0000-0002-9460-0255(王忠朝)

关键词: 生物材料, 口腔生物材料, 纳米纤维素蛋白, 脱细胞基质, 口腔黏膜修复, 修复材料, 缺损直径, 上皮组织, 多层结构, 口腔缺损部位, 上皮组织, 人脱细胞基质

Abstract:

 BACKGROUND: The sensitivity and mucus secretion of the oral mucosa make oral soft tissues difficult to repair, so patients cannot achieve satisfactory outcomes after treatment. Nano-cellulose protein mainly composed of glycine, alanine and serine has good histocompatibility. However, there is a lack of comparative study about the effect of nano-cellulose protein and acellular matrix in oral mucosa repair, and the clinical effects of the two materials are still under discussion.

OBJECTIVE: To investigate the effects of nano-cellulose protein versus acellular matrix in oral mucosa repair.
METHODS: Oral mucosa defect models were prepared in rats, and these rat models were randomly divided into four groups: oral mucosa defects were repaired by vaseline (control group), nano-cellulose protein, bovine skin acellular matrix and human skin acellular matrix, respectively. Repair effects were compared among different materials within 2 months after surgery.

RESULTS AND CONCLUSION: The diameter of oral mucosa defect measured using a vernier caliper, had no significant differences among groups at 1 day after surgery (P > 0.05); the diameter of oral mucosa defect in the nano-cellulose protein group was significantly lower than that in the other groups at 3, 5 and 7 days after surgery (P < 0.05); the diameter of oral mucosa defect in the bovine and human skin acellular matrix groups was significantly lower than that in the control group at 5 and 7 days after surgery (P < 0.05). Morphological observation of the oral mucosa under light microscope showed: the number of newborn capillary endothelial cells in the defect region had no significant differences among nano-cellulose protein, bovine acellular matrix and human acellular matrix groups at 1, 3, 5 and 7 weeks after surgery (P > 0.05); but there were significant differences in the number of newborn capillary endothelial cells between the control group and the other three groups (P < 0.05). Furthermore, at 21 days after surgery, closely aligned and thicker new epithelial tissue could be found in the nano-cellulose protein group; in the bovine acellular matrix group, the defect region was repaired well, new epithelial tissue appeared and the number of inflammatory cells decreased; in the human acellular matrix group, inflammatory cells appeared obviously, and new epithelial tissue formed with the normal thickness. In contrast, abundant inflammatory cells and thinner epithelial tissues appeared in the control group. To conclude, both nano-cellulose protein and acellular matrix can accelerate wound healing by promoting oral mucosal epithelial hyperplasia.

 

Key words: Biocompatible Materials, Tissue Engineering, Soft Tissue Injuries

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