Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Hepatoprotective Effects of Sumaeyaksuk (Artemisia argyi H.) Extract on LPS-mediated Inflammatory Response

LPS에 의해 유도된 염증반응에서 섬애약쑥 추출물의 간보호 효과

  • Received : 2016.06.27
  • Accepted : 2016.08.08
  • Published : 2016.11.30
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Abstract

Artemisia, a plant widely used as traditional herbal medicine in many countries, has drawn attention of the researchers. And its extracts or compounds are known to have an efficacy of antioxidant, anti-diabete, anti-cancer, anti-inflammation and neuroprotection. Sumaeyaksuk is a variant of the Artemisia argyi and major constituents are eupatilin and jaceosidin. This study was performed to investigate the effects of the sumaeyaksuk aqueous extract on inflammatory response induced by lipopolysaccharide (LPS) in human hepatoma HepG2 cells. To examine the potential hepatoprotective properties of sumaeyaksuk extract, cell viability, as well as nitric oxide (NO), reactive oxygen species (ROS), macrophage colony-stimulating factor (M-CSF), interleukin-8 (IL-8) levels, alanine transaminase (ALT), and aspartate transaminase (AST) activities, were measured. Cytotoxic activity of extracts on HepG2 cells was measured by MTT assay. Sumaeyaksuk extract did not induce cytotoxicity at concentrations of $0{\sim}400{\mu}g/mL$. NO and ROS levels significantly decreased with increasing concentration of the extract. The secretion levels of M-CSF and IL-8 were suppressed by sumaeyaksuk extract in a dose-dependent manner. Moreover, ALT (75.4%) and AST (61.6%) levels significantly decreased in sumaeyaksuk extract-treated cells at $400{\mu}g/mL$. These results suggested that the sumaeyaksuk extract attenuates the LPS-induced hepatotoxicity resulting from regulation of inflammatory factors and could potentially be used as a hepatitis therapeutic agent.

본 연구는 섬애약쑥의 생리활성 규명을 위한 연구의 일환으로 물 추출물의 항염증 활성 및 간 염증에 대한 보호효과를 세포수준에서 확인하였다. 세포독성이 없는 $100{\sim}400{\mu}g/ml$의 농도 범위에서 섬애약쑥 추출물은 HepG2 세포에서 nitric oxide (NO)와 reactive nitrogen species (ROS)생성을 농도의존적으로 저해하였으며, 간염질환과 밀접한 관계가 있는 cytokine인 M-CSF와 IL-8의 발현을 감소시켰다. 또한 직접적인 간 손상을 나타낼 수 있는 지표인 AST와 ALT의 발현을 유의성 있게 감소시키는 결과를 얻을 수 있었다. 본 실험을 통해서 섬애약쑥물 추출물은 세포독성이 없는 $200{\sim}400{\mu}g/ml$의 범위에서 농도의존적으로 간 염증의 개선 효과를 가질 것이라는 단서를 확인하였다.

Keywords

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