Restorative Dentistry and Endodontics

The Korean Academy of Conservative Dentistry (대한치과보존학회)
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Interleukin-8 and MCP(Monocyte Chemoattractant Protein)-1 expression by the Human Dental Pulps in cultures stimulated with Substance P

사람치수에서 Interleukin-8과 Monocyte chernoattractant protein-1의 분비에 대한 Substance P의 효과에 관한 연구

  • Shin, Han-Ju (Department of Conservative Dentistry, Division of Dentistry, Graduate School, Kyunghee University) ;
  • Park, Sang-Hyuk (Department of Conservative Dentistry, Division of Dentistry, Graduate School, Kyunghee University) ;
  • Choi, Gi-Woon (Department of Conservative Dentistry, Division of Dentistry, Graduate School, Kyunghee University)
  • 신한주 (경희대학교 대학원 치의학과 치과보존학교실) ;
  • 박상혁 (경희대학교 대학원 치의학과 치과보존학교실) ;
  • 최기운 (경희대학교 대학원 치의학과 치과보존학교실)
  • Published : 2005.05.01
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Abstract

The induction of the IL-8 and MCP-1 by the stimulation of Substance P and TNF-${\alpha}$ (IL-8 agonist) and the specificity for SP using Spantide (SP antagonist) in the dental pulp tissues was measured quantitatively. In addition, the secretion of the IL-8 in the human dental pulp tissue 36 hrs after the stimulation of SP was observed after the stimulation of SP qualitatively. According to this study the results were as follows: 1. There was the significant IL-8 induction at 36 h after SP (10$^{-4}$M) stimulation of the pulp tissue comparing with the unstimulated dental pulp tissues (p < 0.05) . IL-8 irnmunostaining was weakly detected along the periphery of the pulp tissue after Mock stimulation and IL-8 immunostaining was detected around the fibroblast in the pulp tissue 36h After SP (10$^{-4}$M) stimulation, 2. The secretion of MCP-1 from the dental pulp tissues comparing with Mock stimulation was induced at 36 hrs after TNF-$\alpha$ (40 ng/ml) stimulation, but no induction with SP(10$^{-4}$M) TNF-${\alpha}$ (40 ng/ml) did not induce the IL-8 secretion from the pulp tissue, weak IL-8 imrnunostaining was detected along the periphery of the pulp tissue 3. Spantide (10$^{-5}$M) inhibited IL-8 induction from the pulp tissues 36 h after SP (10$^{-4}$M) stimulation These results suggest that SP significantly induces IL-8 recruiting neutrophils in localized human dental pulp tissue MCP-1 appears to be less involved in the early establishment of pulpal inflammation in response to irritation such as mechanical insult of dentin. SP may have positive relation with the inflammation of the human dental pulp tissues.

본 연구에서는 발거된 건전한 치아의 치수조직으로부터 배양된 치수조직을 SP 및 TNF (tumor necrosis factor)-${\alpha}$, 그리고 Spantide로 15분간 배양 후 SP로 36시간 자극하여 IL-8은 및 MCP-1의 분비량을 측정하였으며, 면역염색으로 IL-8의 분비를 관찰하여 다음과 같은 결론을 얻었다. 1. 치수 조직을 SP (10$^{-4}$M)로 36시간 자극 시 모의 자극에 비해 IL-8이 현저히 증가하였으며 (p < 0.05), 면역 염색 결과 모의 자극 시에는 치수조직의 변연부에만, SP(10$^{-4}$M)로 36시간 자극시에는 flbroblast 주위로 IL-8의 발현이 관찰되었다. 2. TNF-${\alpha}$ (40 ng/ml)로 치수조직을 36시간 자극시 모의 자극에 비해 MCP-1이 증가하였으며, SP에서는 증가 를 보이지 않았으며 (p < 0.05), 면역 염색 결과 IL-8의 발현이 관찰되지 않았으며, 치수 조직의 변연부를 따라서 약한 IL-8의 발현이 관찰되었다. 3. Spantide (10$^{-5}$ M)는 SP (10$^{-4}$ M)로 치수 조직을 36시간 자극 시 IL-8의 분비를 억제하였다.

Keywords

References

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