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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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The Effect of Powdered Herb of Aster scaber Thunb. on Antioxidant System in Ethanol-Treated Rats

참취 분말이 에탄올을 투여한 흰쥐의 항산화계에 미치는 효과

  • 이승은 (농촌진흥청 작물시험장) ;
  • 성낙술 (농촌진흥청 작물시험장) ;
  • 정태영 (부산대학교 식품영양학과) ;
  • 최미영 (부산대학교 식품영양학과) ;
  • 윤은경 (부산대학교 식품영양학과) ;
  • 정유진 (부산대학교 식품영양학과)
  • Published : 2001.12.01
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Abstract

The present study was conducted to investigate effect of powdered herb of Aster scaber Thunb. (chamchwi) on antioxidant system in ethanol-administrated rats. Four week-old Sprague Dawley male rats which had initial body weights of 97.10$\pm$4.50 g were randomly divided into three groups: control (ethanol treated, vitamin E-deficient group); 5% chamchwi (ethanol-treated, 5% chamchwi powder-supplemented group): 10% chamchwi (ethanol-treated, 10% chamchwi powder-suplemented group). Three groups of rats were suplemented with three experimental diets for 4 weeks and orally administrated 10% ethanol (v/v) daily via drinking water in the last experimental week. Contents of TBARS (thiobarbituric acid reactive substance). glutathione in liver and kidney and serum albumin were determined. The activities of superoxide dismutase (SOD), catalase and glutathione peroxidase (GSH-px) in liver and kidney were also analyzed. Relative weight of liver and spleen to body in chamchwi groups was lower than that in control group (p<0.05). The most remarkable result was that liver TBARS contents in chamchwi groups (5% chamchwi group, 46 $\mu\textrm{g}$ in MDA value; 10% chamchwi group, 35 $\mu\textrm{g}$) were significantly lower (p<0.05) than that in control group (66 $\mu\textrm{g}$). The supplement of chamchwi powder lowered the activity of manganese- superoxide dismutase (Mn-SOD), catalase in liver and GSH-px in kidney. The levels of glutathione in liver and kidney and serum albumin were not significantly different in all experimental groups (p<0.05). These results indicate that powdered herb of Aster scaber decreases lipid peroxidation and acitvity of Mn-SOD increased by alcohol-induced oxidative stress in liver of rats.

In vitro 항산화 활성이 확인된 참취가 생체 내에서도 활성을 나타내는 지를 확인하기 위해 대조군과 5%및 10% 참취 분말을 첨가한 식이를 4주간 횐쥐에 투여하면서 마지막 1주간 알콜로 산화적 스트레스를 유발한 후 희생시킨 흰쥐의 체중 증가량과 함께 체중에 대한 장기의 상대 중량, 간, 신장에서의 지질과산화, 항산화효소 활성, glutathione 및 혈청 알부민의 함량을 분석하였다. 4주간의 사육 후 체중 증가량은 대조군, 5% 참취첨가군 그리고 10% 참취첨가군의 순으로 높았으나 유의적인 차이는 없었으며 체중에 대한 상대적인 장기 중량 중에서 간, 비장은 대조군에 비해 참취 첨가군의 경우 더 낮은 비율을 나타내었다. 간에서 지질과산화로 생성되는 TBARS 함량은 대조군(66 $\mu\textrm{g}$)에 비해 5%(45 $\mu\textrm{g}$) 및 10% 참취 분말 식이군(35 $\mu\textrm{g}$)에서 참취 첨가량이 증가할수록 낮았다. Mn-SOD와 catalase활성은 참취 첨가군들에서 대조군보다 낮았으나 Cu, Zn-SOD와 glutathione peroxidase 활성 및 glutathione 함량은 실험군들간에 유의적인 차이를 나타내지 않았다. 신장에서는 Mn-SOD와 glutathione peroxidase 활성이 대조군보다 참취 첨가군에서 유사하거나 낮은 경향을 나타내었으나 Cu, Zn-SOD와 catalase의 활성 및 TBARS, glutathione의 함량은 실험군들간에 유의적인 차이를 보이지 않았다. 한편, 혈청 알부민의 함량은 실험군들간에 큰 차이가 없었다. 이상과 같은 실험 결과를 종합할 때 참취는 에탄올에 의해 유발된 산화적인 스트레스를 적절하게 방어하여 특히 간장에서의 지질과산화 및 Mn-SOD활성의 감소를 가져왔으며 그 효과는 참취의 첨가량에 비례하는 경향을 나타내었으므로 생체 안에서 알코올과 같은 산화적 스트레스에 대한 항산화제로서의 역할을 효과적으로 수행할 수 있을 것으로 기대된다.

Keywords

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