›› 2016, Vol. 36 ›› Issue (5): 411-415.

• 基础研究 • 上一篇    下一篇

基质金属蛋白酶-2在人慢性牙周炎肥大细胞上表达的研究

顾思成,李娟,黄世光   

  1. 暨南大学
  • 收稿日期:2015-11-26 修回日期:2016-02-03 出版日期:2016-05-28 发布日期:2016-06-01
  • 通讯作者: 黄世光 E-mail:thshg@126.com
  • 基金资助:
    广东省社会发展领域科技计划项资助项目;广东省社会发展领域科技计划项资助项目

Expression of MMP-2-tryptase double positive mast cells in human chronic periodontitis

  • Received:2015-11-26 Revised:2016-02-03 Online:2016-05-28 Published:2016-06-01

摘要: [摘要] 目的:观察基质金属蛋白酶-2(matrix metalloproteinase-2, MMP-2)在慢性牙周炎牙龈组织中肥大细胞上的表达,探讨MMP-2-tryptase双阳性肥大细胞(mast cells, MCs)在慢性牙周炎发病机制中的作用。方法:将45例参试者依据慢性牙周炎的病变程度分成3组:健康对照组15例;轻度牙周炎组15例;重度牙周炎组15例。牙龈标本经10%福尔马林液固定48 h;制作牙龈组织连续切片,HE染色,光学显微镜下观察组织学改变;采用免疫荧光双染色法,荧光显微镜下观察牙龈组织中MMP-2-tryptase双阳性MCs的表达情况。结果:与健康对照组相比,轻度和重度慢性牙周炎组牙龈组织MMP-2-tryptase双阳性MCs密度均显著升高(P<0.01);重度慢性牙周炎组牙龈组织MMP-2-tryptase双阳性MCs密度显著高于轻度牙周炎组(P<0.05)。结论:慢性牙周炎牙龈组织MMP-2-tryptase双阳性MCs密度与牙周炎病变程度的趋势相一致,MMP-2-tryptase双阳性MCs在牙周炎的进展中可能有促进作用。

关键词: 慢性牙周炎, 肥大细胞, Tryptase, 基质金属蛋白酶-2

Abstract: Abstract Objective To investigate the expression of the matrix metalloproteinase-2 (MMP-2)-tryptase double positive mast cells (MCs) in periodontal tissues in different stages of chronic periodontitis using double immunofluorescence staining. Methods A total of 45 patients including healthy controls (n = 15), those with slight chronic periodontitis (n = 15), and those with severe chronic periodontitis (n = 15) were involved. The gingival specimens were fixed in 10% buffered formalin for 48h, stained with hematoxylin and eosin for the observation of histological changes under optical microscope, and stained with double immunofluorescence for the identification of MMP-2-tryptase double positive MCs in gingival tissues under fluorescence microscope. Results Compared with the healthy controls, the densities (cells/mm2) of MMP-2-tryptase double positive MCs were significantly increased in chronic periodontitis groups (P <0.01). In addition, the density of MMP-2-tryptase double positive MCs in severe chronic periodontitis group was significantly higher than that of the slight chronic periodontitis group (P <0.05). Conclusion The density of MMP-2-tryptase double positive MCs is positively correlated with the severity of periodontitis inflammation. MMP-2-tryptase double positive MCs may play a positive role in the development of periodontitis.

Key words: Chronic periodontitis, Mast cell, Tryptase, Matrix metalloproteinase-2

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