华西口腔医学杂志

• 基础研究 • 上一篇    下一篇

牙龈卟啉单胞菌脂多糖对人牙周膜成纤维细胞胶原吞噬作用的影响

方厂云1, 苏征1, 陈蕾1, 樊明文2, 翦新春1, 陈智2   

  1. 1.中南大学湘雅医院口腔科, 湖南长沙410008; 2.武汉大学口腔医院牙体牙髓科, 湖北武汉430079
  • 收稿日期:2007-08-25 修回日期:2007-08-25 出版日期:2007-08-20 发布日期:2007-08-20
  • 通讯作者: 方厂云,Tel:13787319797
  • 作者简介:方厂云(1965-),男,湖北人,副教授,硕士

Effects of Porphyromonas gingivalis lipopolysacchar ide on collagen phagocytosis by human per iodontal ligament fibroblasts

FANG Chang- yun1, SU Zheng1, CHEN Lei1, FAN Ming- wen2, JIAN Xin- chun1, CHEN Zhi2   

  1. 1. Stomatological Department, Xiangya Hospital of Central South University, Changsha 410008, China; 2. Dept. of Operative Dentistry, Cariology and Endodontology, Stomatological College of Wuhan University, Wuhan 430079, China
  • Received:2007-08-25 Revised:2007-08-25 Online:2007-08-20 Published:2007-08-20
  • Contact: FANG Chang- yun,Tel:13787319797

摘要:

目的研究牙周病致病菌牙龈卟啉单胞菌脂多糖(LPS)对体外培养的人牙周膜成纤维细胞(hPDLF)胶原吞噬作用的影响。方法将不同质量浓度的LPS加入体外培养的hPDLF 48 h后,采用荧光定位术和流式细胞技术检测hPDLF胶原吞噬率的变化。结果LPS导致hPDLF胶原吞噬率显著增加(P<0.05)。结论牙龈卟啉单胞菌脂多糖具有促进hPDLF吞噬胶原的作用,可能是牙周组织破坏机制之一。

关键词: 牙龈卟啉单胞菌, 脂多糖, 牙周膜成纤维细胞, 胶原, 吞噬

Abstract:

Objective To investigate the effects of Porphyromonas gingivalis(P.gingivalis) lipopolysaccharide(LPS) on collagen phagocytosis of human periodontal ligament fibroblasts(hPDLF). Methods Fluorescence localization and flow cytometry was used to test the collagen phygocytosis of hPDLF stimulated by the various concentration of LPS for 48 hours in vitro. Results The collagen phygocytosis of hPDLF was increased significantly by 0.1 μg/mL LPS (P <0.05). Conclusion This study indicates that P.gingivalis LPS may enhance the degradation of collagen by stimulating the phagocytic activity of the hPDLF in periodontitis.

Key words: Porphyromonas gingivalis, lipopolysaccharide, periodontal ligament fibroblasts, collagen, phagocytosis