Journal of the Society of Cosmetic Scientists of Korea (대한화장품학회지)

Society of Cosmetic Scientists of Korea (대한화장품학회)
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The Anti-inflammatory Effect of Green Tea Extract Against Prevotella intermedia

녹차추출물의 잇몸 질환 원인균에 대한 항염증 효능 연구

  • 민대진 ((주)아모레퍼시픽기술연구원 피부과학연구소) ;
  • 이성원 ((주)아모레퍼시픽기술연구원 피부과학연구소) ;
  • 이성훈 ((주)아모레퍼시픽기술연구원 피부과학연구소) ;
  • 김승섭 ((주)아모레퍼시픽기술연구원 피부과학연구소) ;
  • 김찬호 ((주)아모레퍼시픽기술연구원 화장품연구소) ;
  • 이존환 ((주)아모레퍼시픽기술연구원 화장품연구소) ;
  • 배지현 ((주)아모레퍼시픽기술연구원 피부과학연구소) ;
  • 김한곤 ((주)아모레퍼시픽기술연구원 피부과학연구소)
  • Received : 2011.03.03
  • Accepted : 2011.03.20
  • Published : 2011.03.31
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Abstract

Dental bacteria can cause gum diseases, i.e. gingivitis and periodontitis, by inducing inflammation in human gingiva. Therefore, the most effective way to prevent and treat gum diseases is the control of the inflammatory reactions induced by dental bacteria. Almost all present dental care products contain anti-bacterial agents to eliminate dental bacteria. However, recent studies report that even heat-killed dental bacteria can induce the inflammation responses in oral cells. Therefore, the method using anti-bacterial agents should be improved for better anti-inflammatory effect and the effective natural anti-inflammatory substances need to be found. In addition, the mechanisms of gingival inflammation should be elucidated. In this study, we tried to find out the mechanism of the gingival inflammation and effective natural anti-inflammatory substances with human gingival epithelial cells and Prevotella intermedia which is well known as a typical dental bacteria inducing gingivitis and periodontitis. In results, Prevotell intermedia initiated the gingival inflammation response by stimulating gingival epithelial cells to release an inflammatory cytokine, IL-8. Furthermore, the inflammation by Prevotella intermedia is related to COX-2, AP-1, and TNF-${\alpha}$ pathways. Green tea extract could effectively suppress the inflammatory responses induced by Prevotella intermedia. We find out the effective natural substance for the improvement of gum diseases by studying the mechanism of the gingival inflammation induced by dental bacteria.

치아의 세균들은 잇몸에서 염증반응을 일으켜서 치은염과 치주염같은 잇몸 질환의 원인이 된다. 따라서 잇몸질환의 예방과 치료를 위해서는 치아 세균에 의한 염증반응을 조절하는 것이 가장 효과적인 방법이다. 현재 대부분의 구강 관리 제품들은 살균제를 이용하여 구강 세균을 제거하는 방법을 사용하고 있다. 하지만 최근의 연구들은 심지어 열처리로 사멸된 구강 세균도 염증반응을 일으킬 수 있다는 사실을 보고하고 있다. 따라서 보다 효과적인 잇몸 염증반응억제를 위해서는 살균제를 이용한 방법에 대한 개선이 필요하다. 또한 아직까지 구강 세균에 의한 잇몸 염증반응의 기작과 효과적인 천연 염증 억제 물질들은 보고되어 있지 않다. 본 연구에서는 대표적인 치은염, 치주염 유발세균인 Prevotella intermedia와 인간의 잇몸상피세포를 이용하여, 실제로 잇몸에서 일어나는 염증반응의 기작을 연구하고, 이를 통해 효과적인 천연 잇몸 염증 완화 물질을 도출하려고 하였다. 실험 결과, Prevotella intermedia는 잇몸상피세포를 자극하여 염증매개인자인 IL-8을 분비하게 함으로써 잇몸 염증반응을 개시하였다. 또한 Prevotella intermedia에 의한 잇몸 염증반응은 기전적으로 COX-2, AP-1, TNF-${\alpha}$와 연관되어 있었으며, 녹차추출물은 Prevotella intermedia에 의한 잇몸 염증반응을 효과적으로 억제할 수 있음을 확인하였다. 따라서 본 연구는 치아 세균에 의한 잇몸 염증반응의 기전 연구를 통해서 효과적인 천연 잇몸질환 개선 물질을 도출했다는 점에서 중요한 의미를 가진다.

Keywords

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