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일당귀 n-hexane분획이 에탄올을 투여한 흰쥐의 항산화계 및 지질과산화에 미치는 영향

Effects of n-Hexane Fraction of Angelica acutiloba on Antioxidative System and Lipid peroxidation in Ethanol-Induced Hepatotoxicity of rats

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참고문헌

주제분류식품과학

초록

일당귀의 n-hexane분획이 흰쥐에서 에탄올투여로 생성된 oxygen free radical대사와 지질과산화작용에 미치는 영향을 검토하기 위하여 실험동물을 정상군, 일당귀 n-hexane 분획 70 mg/kg투여군, 알코올투여군(35% ethanol 10 mL/kg, b.w./ day), 알코올(35% ethanol 10 mL/kg, b.w./day) 및 일당귀 n- hexane 분획 70 mg/kg 병합투여군과 알코올(35% ethanol 10 mL/kg, b.w./day) 및 일당귀 n-hexane 분획 140 mg/kg 병합투여군의 5군으로 나누어 6주간 사육하여 체중증가율, 식이효율 및 혈청중 ALT, AST 측정과 간손상 억제효과를 검토하기 위하여 간조직중 유리기 생성계 효소인 XO활성, 유리기 해독계 효소인 SOD, calaase 및 GSH-Px활성과 지질과산화물인 TBARS 및 GSH함량을 측정한 결과는 다음과 같다. 각 분획의 항산화력은 n-hexane, ethylacetate, chloroform, n-butanol 및 water 분획순으로, n-hexane 분획의 항산화력이 가장 우수하였다. 6주간의체중증가율과 식이효율은 알코올투여로 정상군에 비하여 유의적으로 저하되었으나 일당귀 n-hexane 분획투여로 정상군에 근접하게 상승되었고, 알코올투여로 상승된 ALT 및 AST활성도 유의하게 저하되었다. 간 조직중 XO활성은 알코올투여로 정상군보다 상승되었으며 일당귀 n-hexane 분획 투여로 저하는 되었지만 유의성있는 변화는 아니었다. 알코올 투여로 상승된 SOD활성은 일당귀 n-hexane 분획 투여로 정상군에 비하여 유의하게 저하되었으나 catalase와 GSH-Px활성은 유의적인 변화를 나타내지 않았다. TBA 반응성 산물량은 정상군과 일당귀 n-hexane 분획 투여군간에 차이는 없었고 알코올투여로 정상군보다 많은 증가를 나타냈으나 일당귀 n-hexane 분획투여로 정상군에 근접하게 감소되었다. 알코올투여로 감소된 GSH 함량은 일당귀 n-hexane분획을 투여하여 용량의존적으로 증가되었다. 이상의 실험결과에서 일당귀의 항산화작용은 유리기 해독계 효소인 SOD활성억제와 비효소적 항산화작용을 나타내는 GSH량을 증가시킴으로서 지질과산화물에 대한 방어력이 증강되어 나타난 결과로 판단되어지며, 또한 혈청중 ALT 및 AST활성을 유의성있게 감소시키므로써 일당귀가 알코올성 간질환에서 손상된 간기능을 회복시킬 수 있을 것으로 추정되었다.

Abstract

To investigate antioxidative effects of n-hexane fraction of Angelica acutiloba on the ethanol-induced hepatotoxicity of rats, Sprague-Dawley rats weighing 100 ± 20 g were divided into 5 groups ; normal group(NOR), ethanol(10 mL/kg, 35%) treated group(CON), n-hexane fraction of Angelica acutiloba 70 mg/kg treated group(A1), n-hexane fraction of Angelica acutiloba 70 mg/kg and ethanol treated group(A2) and n-hexane fraction of Angelica acutiloba 140 mg/kg and ethanol treated group(A3), respectively. The antioxidative activities of ethanol extract of Angelica acutiloba in vitro were decreased in order of n-hexane 〉ethylacetate 〉chloroform 〉n-butanol 〉water fraction. The growth rate and feed efficiency rate decreased by ethanol were gradually increased to the adjacent level of the normal group by administering n-hexane fraction of Angelica acutiloba. It was also observed that the activities of SOD of liver, ALT and AST of serum increased by ethanol were markedly decreased in n-hexane fraction of Angelica acutiloba administered group, and not in activites of XO, catalase, as compared with the control group. The depleted content of GSH by ethanol was increased adjacent to normal level by administering n-hexane fraction of Angelica acutiloba. as a dose-dependent manner. These results suggested that n-hexane fraction of Angelica acutiloba has a possible protective effect on the ethanol-induced hepatotoxicity of rats.

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