Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Inhibitory Activity of Pigmented Rice Bran Extract to the Allergic Inflammation in Basophilic Cell Line and Peritoneal Mast Cells

호염구세포주와 복강 비만세포에서 유색미 겨 추출물의 알레르기 염증 억제활성

  • Choi, Sun-Phil (Department of Biological Science, Ajou University) ;
  • Kang, Mi-Young (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Nam, Seok-Hyun (Department of Biological Science, Ajou University)
  • Published : 2005.12.31
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Abstract

The effects of the extracts from the bran part of pigmented rices on inflammation was evaluated by determining their inhibitory action on the histamine and ${\beta}-hexosaminidase$ release, together with inflammatory cytokine productions ($IL-1{\beta},\;TNF-{\alpha}$ and IL-6). Examination of the inhibitory effects on the histamine and ${\beta}-hexosaminidase$ release from a basophilic cell line RBL-2H3 cells and rat peritoneal mast cells (RPMC) showed that the pigmented rice extract inhibited these inflammation-mediating substances (10.19% and 110.03% inhibition in histamine and ${\beta}-hexosaminidase$ release, respectively), while normal brown rice extract rather increased their release. For RPMC, the pigmented rice extract was found to have 8 or 3-fold stronger inhibitory activity than normal brown rice toward histamine or ${\beta}-hexosaminidase$ release, respectively. Expression of $IL-1{\beta},\;TNF-{\alpha}$ and IL-6 was measured as the representative inflammatory cytokine species showed that the pigmented rice extract had a higher inhibitory activity than the normal rice counterpart. ELISA analysis for determining cytokine release demonstrated a more effective blockading ability of the pigmented rice to the release of $IL-{\beta},\;TNF-{\alpha}$ and IL-6 compared to normal rice. These results showed us the superiority of the pigmented rice bran extract not only in suppressing the release of inflammation-mediating substances such as histamine and ${\beta}-hexosaminidase$, but also in repression of the inflammatory cytokine expression.

유색미 겨 추출물이 염증반응에 미치는 효과를 호중구 세포주 및 비만세포가 분비하는 염증매개물질인 histamine과 ${\beta}-hexosaminidase$의 분비 및 염증 cytokine 생성에 대한 억제활성을 측정하여 평가하였다. 호중구 세포주인 RBL-2H3 세포와 rat에서 분리 추출한 복강 비만세포(RPMC, peritoneal mast cell)를 이용하여 histamine과 ${\beta}-hexosaminidase$ 분비에 대한 억제활성을 조사한 결과, 일반미 겨 추출물은 RBL-2H3 세포에서 염증매개물질들의 분비량을 증가시킨 반면, 유색미 겨 추출물은 이들의 분비를 억제하였다(histamine 10.19% 억제, ${\beta}-hexosaminidase$ 110.03% 억제). RPMC에서는 유색미가 histamine과 ${\beta}-hexosaminidase$의 분비를 일반미보다 각각 8배와 3배나 높게 억제하는 것으로 나타났다. 염증관련 cytokine으로서 $IL-1{\beta},\;TNF-{\alpha}$ 및 IL-6의 발현을 RT-PCR로 측정한 결과, 유색미가 일반미 보다 $TNF-{\alpha},\;IL-1{\beta}$ 및 IL-6의 발현을 억제하는 효과가 우수하였다. ELISA를 이용하여 cytokine의 분비량을 측정한 실험에서도 유색미가 일반미보다 $TNF-{\alpha},\;IL-1{\beta}$ 및 IL-6의 분비를 효과적으로 억제하였다. 이상의 결과는 유색미가 염증반응의 원인 물질인 histamine과 ${\beta}-hexosaminidase$의 분비에 대한 억제효과 뿐 아니라, 염증 cytokine의 발현을 저해하는 효과도 일반미보다 우수하다는 사실을 보여주었다.

Keywords

References

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