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참나물이 만성적으로 알코올 유도된 흰쥐의 간손상에 미치는 영향

Effect of Pimpinella Brachycarpa Ethanol Extract on Chronically Ethanol-Induced Liver Damage in Rats

  • 추명희 (조선대학교 식품영양학과) ;
  • 이재준 (조선대학교 식품영양학과) ;
  • 이명렬 (조선대학교 식품영양학과)
  • 발행 : 2007.10.30

초록

본 연구에서는 참나물의 항산화효과를 구명하기 위하여, in vitro에서 Rancimat에 의한 항산화력 측정과 in vivo에서 Sprague Dawley 종 수컷에게 만성적으로 알코올 과량 섭취로 유도된 간조직의 산화적 스트레스가 참나물을 처리함으로써 간조직의 항산화 체계에 어떠한 영향을 미치는지를 비교 관찰하여 다음과 같은 결과를 얻었다. 실험군은 정상군(NOR), 대조군(CON, 35% 알코올 10 ml/kg of b.w./day), 참나물 에탄올 추출물 단독투여군(P1), 알코올과 참나물 에탄올 추출물 저용량(200 mg/kg of b.w./day) 병합투여군(P2) 및 알코올과 참나물 에탄올 추출물 고용량(400 mg/kg of b.w./day) 병합투여군(P2)의 5군으로 나누어 6주간 사육하였다. In vitro 연구 결과는 참나물 에탄올 추출물을 계통 분획하여 Rancimat에 의한 항산화지수를 측정하였는데, 분획 중 n-hexane의 항산화력이 가장 우수하였으며, 합성항산화제인 BHT와 항산화력이 비슷하였다. In vivo에서 항산화 효과를 측정한 결과는 정상식이만을 급여한 정상군과 정상식이와 참나물 에탄올 추출물을 단독투여 한 P1군간에는 유의차가 없었으나, 알코올을 투여한 군(대조군, P2 및 P3)들 간에는 유의차를 보였으며 특히, 고용량 병합투여 시 항산화 효과가 높게 나타났다. 즉 만성 알코올 투여로 감소되어진 체중과 식이섭취량은 참나물 에탄올 추출물 병합투여로 정상식이군 수준으로 회복시켰다. 또한 참나물 에탄올 추출물 병합투여 시 알코올 투여로 증가된 간조직의 유리기 해독계 효소인 XO, catalase 및 GSH-Px 활성 억제와 항산화작용을 나타내는 GSH 함량을 증가시킴으로서 지질과산화물에 대한 방어력이 증가되었다. 이상의 결과 알코올과 참나물 에탄올 추출물을 병행 투여함으로서 항산화 효소 체계가 향상되었으며, 참나물 에탄올 추출물은 알코올 섭취로 유도된 산화적 스트레스와 알코올성 독성으로부터 간을 보호하는 항산화효과가 있는 것으로 추정된다.

This study was performed to investigate the effect of ethanol extract of Pimpinella brachycarpa(PBE) on chronically ethanol-induced hepatotoxicity in rat liver. Sprague-Dawley rats weighing 90-130 g were divided into 5 groups; normal group(NOR), ethanol(35%, 10 ml/kg) treated group(CON), PBE 200 mg/kg treated group(P1), PBE 200 mg/kg and ethanol treated group(P2), and PBE 400 mg/kg and ethanol treated group(P3). PBE was also fractionated by the following solvent: n-hexane, chloroform, ethylacetate and n-butanol. The antioxidative capacity of the n-hexane fraction was the highest among fractions and was similar to that of butylated hydroxytoluene(BHT). The body weight gain and feed intake of the rats were decreased by ethanol administration, but were gradually increased to the similar levels of the NOR group by administering PBE. The AST activity in serum elevated by ethanol was significantly decreased by administering the high dosage of PBE, but exerted no significant change on serum ALT activity. It was also observed that the hepatic activities of xanthine oxide(XO), catalase and glutathione peroxidase(GSH-Px) increased by ethanol were markedly decreased in the combined ethanol and PBE administered groups(P2 and P3), but not in the activity of superoxide dismutase(SOD) as compared with the CON group. The glutathione(GSH) contents were decreased by ethanol adminstration, however, increased after administering PBE. These results suggest that ethanol extract of Pimpinella brachycarpa has a possible positive effect on the liver function in hepatotoxicity-induced rats by ethanol administration.

키워드

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