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Anti-allergic Effect of Ethanolic Extract of Flos Sophora japonica L. on Ca++ Ionophore Stimulated Murine RBL-2H3 Cells

괴화(槐花) 에탄올 추출물이 RBL-2H3 비만세포에서 Ca++ Ionophore에 의한 알레르기 반응 조절에 미치는 효과

  • Xiao, Sun (Dept. of Biotechnology, College of biomedical and Health Science, Konkuk University) ;
  • Jiang, Jun (Dept. of Biotechnology, College of biomedical and Health Science, Konkuk University) ;
  • Shim, Do-Wan (Dept. of Biotechnology, College of biomedical and Health Science, Konkuk University) ;
  • Kim, Tae-Kweon (Yakcho Life Co.) ;
  • Kang, Tae-Bong (Dept. of Biotechnology, College of biomedical and Health Science, Konkuk University) ;
  • Lee, Kwang-Ho (Dept. of Biotechnology, College of biomedical and Health Science, Konkuk University)
  • 손효 (건국대학교 생명공학과) ;
  • 강군 (건국대학교 생명공학과) ;
  • 심도완 (건국대학교 생명공학과) ;
  • 김태권 (약초생활건강) ;
  • 강태봉 (건국대학교 생명공학과) ;
  • 이광호 (건국대학교 생명공학과)
  • Received : 2013.11.01
  • Accepted : 2013.12.26
  • Published : 2014.03.31

Abstract

Elevation of intracellular calcium ($Ca^{{+}{+}}$) triggers degranulation of mast cells by bypassing receptor activation. Flos Sophora japonica L. has been used as a natural dying source and has been reported to have biological activities such as anti-inflammatory and anti-allergic effects through $Fc{\varepsilon}RI$ and IgE crosslinking. In the present investigation, we report the regulatory effect of ethanolic extract of Flos Sophora japonica L. (S.F) on allergic mediators produced by $Ca^{{+}{+}}$ ionophore activation in mast cells. S.F significantly inhibited calcium ionophore (A23187)-induced interleukin (IL)-4 and tumor necrosis factor (TNF)-${\alpha}$ production as well as mast cell degranulation. Furthermore, administration of S.F suppressed allergic reactions in a 2,4-dinitrofluorobenzene (DNFB)-induced allergic dermatitis mouse model. Both oral administration and ear painting using 50 mg/kg of S.F significantly reduced levels of cytokines such as IL-4, TNF, and interferon-${\gamma}$ in ear tissues compared to the DNFB alone-treated group. Serum IgE level in the S.F-treated group also decreased compared to the DNFB alone-treated group. Weights of spleens and lymph nodes in the S.F-treated groups also decreased compared to the control group. Considering the data, we conclude that S.F mediates its anti-allergic effects not only through $Fc{\varepsilon}RI$ stimulation but also $Ca^{{+}{+}}$ influx in mast cells.

세포내 $Ca^{{+}{+}}$의 증가는 비만세포에서 수용체 활성을 거치지 않고 탈과립을 유도한다. 괴화는 천연 염색 재료로 사용되고 있으며, 또한 항염증 작용과 $Fc{\varepsilon}RI$와 IgE 가교에 의한 항알레르기 효능도 보고되었다. 이번 연구에서 비만세포에서 $Ca^{{+}{+}}$ 유입에 의해 생산되는 알레르기 매개물에 대한 괴화 추출물의 조절 기능을 보고한다. 괴화 추출물은 A23187에 의해 유도되는 IL-4와 TNF-${\alpha}$의 생산과 탈과립을 저해하였다. 또한 괴화 추출물은 DNFB로 유도한 알레르기 피부염의 동물 모델에서 알레르기 반응을 억제하였다. 괴화추출물 50 mg/kg을 경구투여 또는 도말을 한 경우, DNFB를 단독으로 처리한 군보다 IL-4, TNF 그리고 IFN-${\gamma}$와 같은 염증성 사이토카인의 생산량이 감소하였다. 또한 괴화 추출물을 처리한 경우 혈청 내 IgE의 함량이 DNFB를 단독으로 처리한 군보다 감소하였다. 괴화 추출물을 처리한 군에서의 비장과 림프절의 무게도 DNFB를 단독으로 처리한 군보다 감소하였다. 이러한 결과를 토대로 괴화는 비만세포에서 $Fc{\varepsilon}RI$ 자극뿐만 아니라 $Ca^{{+}{+}}$의 유입에 의한 항알레르기 효능이 있다는 것을 보고한다.

Keywords

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