Inhibitory Effect of Galangin from Alpinia officinarum on Lipopolysaccharide-induced Nitric Oxide Synthesis in RAW 264.7 macrophages

고량강으로부터 분리된 galangin의 RAW 264.7 세포주에서 LPS로 유도된 nitric oxide 생성 저해활성

  • Received : 2013.05.26
  • Accepted : 2014.06.04
  • Published : 2014.08.31


In a screen for plant-derived inhibitors of nitric oxide (NO) production in lipopolysaccharide (LPS)-activated RAW 264.7 macrophage cells, a flavonol isolated from the chloroform extract of Alpinia officinarum was isolated. The structure of the flavonol was found to be 3,5,7-trihydroxy-2-phenylchromen-4-one (galangin, GLG) by using spectroscopy. GLG exhibited an inhibitory effect ($IC_{50}$ value: $26.8{\mu}M$) on NO production in LPS-stimulated RAW 264.7 murine macrophage cells. Moreover, GLG suppressed expressions of inducible nitric oxide synthase (iNOS) protein and mRNA in a dose-dependent manner.


Alpinia officinarum;Zingiberaceae;nitric oxide;inducible nitric oxide synthase;flavonol


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