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Effect of Dietary Monascus Koji on the Liver Damage Induced by Bromobenzene in Rats

식이성 홍국이 Bromobenzene에 의한 간 손상의 해독에 미치는 영향

  • 오정대 (계명대학교 공증보건학과) ;
  • 윤종국 (계명대학교 공증보건학) ;
  • 유대식 (계명대학교 미생물학과)
  • Published : 2004.07.01

Abstract

In the present study, it is observed that Monascus diet may have a hepatoprotective effect on the liver damage induced by bromobenzene in rats. By treatment with bromobenzene (400 mg/kg, i.p.) once a day for 3 consecutive days, the liver damage was reduced in rats fed 2% Monascus diet, based on the liver functional and histopathological findings. Furthermore, retreatment of bromobenzene to the animals with damaged liver showed higher decreasing rate of hepatic glutathione content and increasing rate of cytochrome P450 dependent aniline hydroxylase activity at 4 h in rats fed 2% Monascus diet than those fed STD diet, and V$_{max}$ in glutathione S-transferase was higher in liver of rats fed 2% Monascus diet than those fed STD diet. On the other hand, activities of antioxidant enzymes such as hepatic glutathione S-transferase, catalase and superoxide dismutase were generally higher both in bromobenzene and 2% Monascus diet treated group than those fed STD diet. In conclusion, the rats fed 2% Monascus diet showed lower liver damage than those fed STD diet, which may be due to the acceleration of bromobenzene metabolism and detoxication of oxygen free radicals.s.

홍국이 bromobenzene에 의한 간 손상에 어떠한 영향을 미치는지를 알아보기 위하여 흰쥐 에 2% 및 4% 홍국 첨가식이로 1개월 간 성장시킨 다음 체중 1 kg당 400 mg의 bromobenzene을 1일 1회 복강으로 3회 투여한 다음, 24시간 후에 처치하여 다음과 같은 결과를 얻었다. 2% 및 4% 홍국 첨가식이로 성장시킨 흰쥐에 있어서 체중증가율은 표준식이군과 별다른 차이를 볼 수 없었으며 간 기능 및 병리조직검사에서도 홍국 섭취로 인한 간 조직의 병태생리적 변화가 관찰되지 않았다. 이러한 실험동물에 bromobenzene을 투여 시 간 손상 정도가 2% 홍국 첨가식이군에서 가장 경미하게 나타났다. 2% 홍국 첨가식이군에서 bromobenzene에 의한 간손상이 경미하게 나타난 원인을 구명하고자 간 손상 실험모델에bromobenaene을 재투여시, 간 조직 중 cytochrome P-450 dependant aniline hydroxylase 활성은 대조군에 비하여 2% 홍국 첨가식이군에서는 유의한 증가(p<0.01)를 보였으나 표준식이군 및 4% 홍국 첨가식이군은 오히려 감소하였다. 그리고 대조군에 대한 간 조직 glutathione 함량 감소율에 있어서는 2% 홍국 첨가식이군에서 표준식이군 및 4% 홍국 첨가식이군보다 높게 나타났다. 그러나 간 조직의 glutathione S-transferase 활성은 3군간에 별다른 차이를 볼 수 없었으나 반응속도적 측면에서는 2% 홍국 첨가식이군에서 표준식이군 및 4% 홍국 첨가식이군보다 V$_{max}$치가 높게 나타났다. 한편 bromobenzene 투여에 의한 간 조직의 cytochrome P-450 dependant aniline hydroxylase 증가율은 2% 홍국 첨가식이군에서 표준식이군 및 4% 홍국 첨가식이군보다 낮게 나타났으며, xanthine oxidase 활성은 3군간에 별다른 차이를 볼 수 없었다. 특히 대조군 및 bromobenzene 투여군 모두superoxidase dismutase, catalase, glutathione peroxidase 활성은 2% 홍국 첨가식이군에서 표준식이군 및 4% 홍국 첨가식이군보다 높게 나타났다. 이상 실험결과를 종합해 볼 때, 2% 홍국 첨가식이군에서 bromobenzene에 의한 간 손상이 경미하게 나타났으며, 이는 2% 흥국 첨가식이의 섭취로 인한 bromobenzene 대사 및 유해산소 해독의 촉진에 기인되기 때문일 것으로 생각된다.다.

Keywords

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