Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Hepatoprotective Effects of Hovenia dulcis Fruit on Ethanol-Induced Liver Damage in vitro and in vivo

세포 및 동물모델에서의 알코올에 의해 유발된 간손상에 대한 지구자 추출물의 보호효과

  • You, Yang-Hee (Dept. Food and Nutrition, Chonnam National University) ;
  • Jung, Kuk-Yung (Graduate School of Complementary & Alternative Medicine, College of Medicine, Pochon CHA University) ;
  • Lee, Yoo-Hyun (Dept. Food Science and Nutrition, Suwon University) ;
  • Jun, Woo-Jin (Dept. Food and Nutrition, Chonnam National University) ;
  • Lee, Boo-Yong (Graduate School of Complementary & Alternative Medicine, College of Medicine, Pochon CHA University)
  • 유양희 (전남대학교 식품영양학과) ;
  • 정국영 (포천중문의과대학교 대체의학대학원) ;
  • 이유현 (수원대학교 식품영양학과) ;
  • 전우진 (전남대학교 식품영양학과) ;
  • 이부용 (포천중문의과대학교 대체의학대학원)
  • Published : 2009.02.28
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Abstract

The hepatoprotective effect of ethanol extract from Hovenia dulcis fruit (HD) against ethanol-induced oxidative damage was investigated. Ethanol-induced reactive oxygen species (ROS) generation and liver damage on HepG2/2E1 cells were protected by $100{\mu}g/mL$ ethanolic extract from HD. Male C57BL/6 mice were divided into 3 groups; control (NC), ethanol (ET), ethanol plus 1 g/kg body weight ethanolic extract of HD (ET-HD). The activities of serum alanine amintransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP) were significantly increased in ethanol-treated group. However, ET-HD group showed protective effect by lowering serum activities. The ET group markedly decreased the activities of catalase (CAT), superoxide dismutase (SOD), and glutathione-s-transferase (GST) with the reduced level of glutathione (GSH) in liver. On the other hand, ET-HD group increased the activities of SOD and GST, and the level of GSH. Lipid peroxidation level, which was increased after ethanol administration, was significantly reduced in ET-HD group. Based upon these results, it could be assumed that ethanolic extract of HD protected the liver against ethanol-induced oxidative damage by possibly inhibiting the suppression of antioxidant activity and reducing the rate of lipid peroxidation in vitro and in vivo. Therefore, extract of Hovenia dulcis fruit might be used as a protective agent for ethanol-induced hepatic damages.

알코올에 의해 유도된 간 손상에 대한 지구자 추출물의 보호효과를 연구하였다. HepG2/2E1 세포에서 알코올로 유도된 ROS 생성과 산화적 손상에 대한 지구자 추출물 보호효과를 확인하였다. C57BL/6마우스를 대조군(NC), 알코올군(ET), 알코올과 지구자 추출물 1 g/kg body weight 투여군(ET-HD)으로 나누었다. 5 g/kg body weight의 알코올을 1주일간 ET와 ET-HD군에 투여하였다. 알코올 투여는 혈청 alanine amintransferase(ALT), aspartate aminotransferase(AST) 및 alkaline phosphatase(ALP)를 증가시키고, 지구자 추출물은 이러한 간 기능 지표효소의 증가를 억제시켰다. 간조직의 항산화 효소 활성은 알코올 투여에 의해 감소되었고, ET-HD군에서 SOD 및 GST 활성은 ET군과 비교하여 통계적으로 유의하게 높아졌다. GSH 함량은 ET군에서 NC군에 비하여 유의적으로 낮아졌고, ET-HD군에서 ET군과 비교하여 통계적으로 유의하게 높아졌으며, NC군과 유사한 함량을 나타내어 간 보호 효과를 확인할 수 있었다. 지질과산화물 함량은 ET-HD군과 NC군이 유사한 함량을 나타냄으로써 알코올에 의해 유도된 지질과산화물 증가에 의한 간손상으로부터 지구자 추출물의 보호 효과를 보여 주었다. 이상의 결과로부터, 지구자 추출물은 세포 및 동물 모델에서 알코올로 유도된 간 손상으로부터 항산화 방어 대사의 증가와 지질과산화율의 감소에 의해 간세포 보호 활성을 나타냄을 확인하였다. 이에 지구자 추출물은 알코올성 간 손상으로부터 보호 효과를 갖는 소재로 활용될 수 있을 것으로 사료된다.

Keywords

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