吉林大学学报(医学版)

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重组人粒细胞-巨噬细胞集落刺激因子对兔牙龈创伤愈合的促进作用

朱慧颖1,2,车彦海3,何畔1,马宁1   

  1. ZHU Hui-ying1,2,CHE Yan-hai2,HE Pan1,MA Ning1
  • 收稿日期:2014-03-04 出版日期:2014-11-28 发布日期:2015-01-18
  • 通讯作者: 马 宁(Tel:0431-88796039,E-mail: maningbsh76@sina.com) E-mail:maningbsh76@sina.com
  • 作者简介:朱慧颖(1986-),女,江西省宜春市人,住院医师,口腔医学硕士,主要从事牙周病学及牙周组织再生的研究。
  • 基金资助:

    吉林省科技厅重点项目资助课题(20090437)

Promotion effect of recombinant human granulocyte-macrophage colony stimulating factor  on wound healing of gingiva in rabbits

  1. (1.Department of Periodontology,School of Stomatology,Jilin University,Changchun 130021,China;2.Department of Stomatology,Second Hospital of Xiamen City,Xiamen 361000,China;3.Animal Laboratory,Stomatology Hospital,Jilin University,Changchun 130021,China)
  • Received:2014-03-04 Online:2014-11-28 Published:2015-01-18

摘要:

目的:探讨重组人粒细胞-巨噬细胞集落刺激因子(rhGM-CSF)对于牙龈创伤修复的影响,为其在口腔牙周领域中的应用奠定基础。方法:16只健康大耳白兔随机分为实验组和对照组,每组8只。采用手术刀切除上下切牙唇侧牙龈2 mm。术后实验组每日3次创面涂抹rhGM-CSF,对照组以生理盐水替代。于术后3、7、11和15 d各处死动物2只,HE染色观察镜下上皮及上皮下结缔组织的结构、分布,各种创伤修复细胞的变化,PCNA染色后观察阳性染色上皮细胞和成纤维细胞数目。结果:形态学观察,第3天2组均表现出炎细胞浸润,但实验组浸润数目更多;第7天2组均可见到新生血管、成纤维细胞和胶原纤维,实验组新生血管化的程度较为显著;第11天2组出现大量增殖的成纤维细胞,但实验组和程度更广泛,至第15天时2组的创伤均已基本恢复正常,组间差异不明显。PCNA染色,随着时间的推移,增殖的上皮细胞数目逐渐增加,至第15天时达到高峰,增殖的成纤维细胞数目从第3天起开始增加,至第11天达到高峰,第15天则明显降低为最低值。实验组增殖的上皮细胞数量在第3和11天显著高于对照组(P<0.01),增殖的成纤维细胞数量在第11和15天明显高于对照组(P<0.05),其余时间点组间比较差异均无统计学意义(P>0.05)。结论:rhGM-CSF可以促进牙龈组织中炎细胞的浸润、血管的新生、上皮细胞和成纤维细胞的增殖,rhGM-CSF可以促进牙龈组织创伤愈合。

关键词: 重组人粒细胞-巨噬细胞集落刺激因子, 创伤愈合, 牙龈创伤

Abstract:

Abstract:Objective To investigate the effects of recombinant human granulocyte-macrophage colony stimulating factor (rhGM-CSF) on the gingival wound healing,and to lay a foundation for its application in the field of oral cavity.Methods 16 healthy rabbits were randomly divided into experiment and control groups(n=8).2 mm upper and lower incisors’ labial gingivae were removed by scalpel.After operation,rhGM-CSF gel was applied to the surface of the wound gum in experiment group,while saline instead of drugs to the control group.2 rabbits were executed at 3,7,11,and 15 d after operation.HE staining was performed to observe the epithelium and epithelial connective tissue structure,distribution,and the changes of various cells of the rats;the  number of positive epithelial cells and fibroblasts were observed by PCNA dyeing.Results On the 3rd day, the  inflammatory cell infiltration was found in two groups,but a greater number of the cells were observed in experiment group; neovascularization was seen in both groups on the 7th day,and the fibroblasts and collagen fibers were observed too,but the extent of neovascularization in experiment group was more significant.On the 11th day,the fibroblasts proliferation was seen in two groups,but the extent in experiment group was more widely; on the 15th day,the trauma of gingivae of the rabbits in two  groups returned to normal,there was no significant difference between two groups.Over time,the number of epithelial cells in proliferation was gradually increased,reached the peak on the 15th day.The number of fibroblasts began to increase from the 3rd day and reached the peak on the 11th day,and significantly reduced to the lowest value  on the 15th day.The number of proliferative epithelial cells in experiment group was significantly higher (P<0.01)on the 3rd day and the 11th day than those in control group(P<0.01);the number of proliferative  fibroblasts was significantly higher (P<0.05) on the 11th day and the 15th day than those in control group(P<0.05),but there were no significantly statistical differences between two groups at other time pionts(P>0.05).Conclusion  RhGM-CSF can promote the infiltration of inflammatory cells,angiogenesis, proliferation of epithelial cells and fibroblasts in gingivae.RhGM-CSF is beneficial with wound healing on gum tissue.

Key words: recombinant human granulocyte-macrophage colony stimulating factor;wound healing, gum trauma

中图分类号: 

  • R781