THE JOURNAL OF KOREAN ORIENTAL ONCOLOGY (대한한방종양학회지)

Korean Association of Traditional Oncology (대한암한의학회)
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Effects of Seman Armenicae and Radix Trichosanthis on the iNOS expression and superoxide formation in the RAW264.7 cells

행인 과루인 추출물이 마우스 대식세포주인 RAW264.7 세포주의 iNOS 발현 및 Superoxide 형성에 미치는 영향

  • Published : 1999.12.30
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Abstract

Macrophage play a major role in host defence against infection and tumor development and this activity is regulated through the production of several mediators. In particular, the production of NO by macrophages mediates killing or growth inhibition of tumor cells, bacteria, fungi and parasites. However, over-expression of iNOS by various stimuli, resulting in over-production of NO, contributes to the pathogenesis of septic shock and some inflammator and auto-immune disease. Therefore, it would be valuable to develop potent and selective inhibitors of for potential therapeutic use. Thus the agent that supprees the expression of iNOS mRNA or enzyme protein will be usefull for the prevention of various diseases. We are intersted in identifying selective inhibitiors of iNOS which might be useful intreating inflammatory human diseases. In summary, we have demenstrated that scopoletin, isolated from Seman Armenicae and Radix Trichosanthis the production of NO induced by $IFN-\gammer$ plus LPS in RAW 264.7 macrophages, The mechanism for the inhibition of NO production was due to suppression of the expression of iNOS mRNA or enzyme protein.

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References

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