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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Protective Effect of Hovenia dulcis Thumb Leaves Extract on Hepatic Injury Induced by Benzo(α)pyrene in Mice

헛개나무 잎 추출물의 벤조피렌 유발 간 독성에 대한 보호효과

  • 박선희 (영남대학교 식품영양학과) ;
  • 장은영 (영남대학교 식품영양학과) ;
  • 장종선 (한국생명공학연구원 생물산업기술연구센터) ;
  • 윤경영 (영남대학교 식품영양학과)
  • Published : 2009.05.29
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Abstract

This study was carried out to investigate the protective effect of Hovenia dulcis Thumb leaves extract on liver damage in benzo($\alpha$)pyrene (B($\alpha$)P)-treated mice. Hovenia dulcis Thumb leaves methanol extract was intra-peritoneally injected once daily for 5 successive days, followed by treatment with B($\alpha$)p. The elevated activities of serum aminotransferase and hepatic cytochrome P450 by B($\alpha$)p were decreased by pretreatment with Hovenia dulcis Thumb leaves extract. Hovenia dulcis Thumb leaves extract also significantly prevented the elevation of hepatic malondialdehyde content and depletion of glutathione content induced by B($\alpha$)P. In addition, the increased activities of superoxide dismutase, catalase and glutathione peroxidase after B($\alpha$)P-treatment were decreased. On the other hand, glutathione S-transferase activity was increased by pretreatment with Hovenia dulcis Thumb leaves extract. These results suggest that Hovenia dulcis Thumb leaves extract have a protective effect on liver damage by B($\alpha$)P through the mechanisms of decreasing lipid peroxide and activities of free radical generating enzymes.

헛개나무 잎 추출물의 간 손상 억제 작용을 확인하고자, B($\alpha$)P 투여로 간 독성이 유발된 마우스에서 과산화지질의 생성 및 관련 효소의 활성 변화를 살펴본 결과 B($\alpha$)P 투여로 인해 혈청 ALT와 AST의 활성, 간 조직 중의 과산화지질 함량, cytochrome P450 함량, SOD, catalase 그리고 GSH-Px의 활성이 유의적으로 증가하였고(p<0.05), GSH 함량과 GST 활성은 감소하였다. 반면 헛개나무 잎 메탄올 추출물의 전 처리로 인해 ALT와 AST의 활성, 과산화지질 함량, cytochrome P450 함량 그리고 항산화 효소인 SOD, catalase 및 GSH-Px의 활성이 유의적으로 감소하였으며(p<0.05), GSH 함량과 GST 활성은 증가하였다. 이상의 결과로 헛개나무 잎 메탄올 추출물은 생체 내에서 자유기로 인해 야기되는 간장의 산화적 손상을 효과적으로 억제할 수 있을 것으로 사료된다.

Keywords

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