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뱀딸기풀의 항산화 활성 및 고지방·고콜레스테롤 식이 흰쥐의 항산화 방어계 조절에 미치는 영향

Effects of Duchesnea chrysantha on Regulation of Antioxidative defense System in Rats Fed a High-fat·High-cholesterol Diet

  • 송원영 (한국국제대학교 영양식품학과) ;
  • 최정화 (한국국제대학교 영양식품학과)
  • Song, Won-Yeong (Department of Nutrition Food, International University of Korea) ;
  • Choi, Jeong-Hwa (Department of Nutrition Food, International University of Korea)
  • 투고 : 2017.10.26
  • 심사 : 2018.01.12
  • 발행 : 2018.01.30

초록

본 연구에서는 고지방 고콜레스테롤 식이 흰쥐에서 뱀딸기풀 파우더가 간조직의 항산화작용에 미치는 영향을 관찰하였다. 실험군을 4군으로 나누어 정상 식이군(N 군), 고지방 고콜레스테롤 식이군(HF 군), 고지방 고콜레스테롤 식이에 뱀딸기풀 파우더를 5% 첨가한 군(DA 군), 고지방 고콜레스테롤 식이에 뱀딸기풀 파우더를 10% 첨가한 군(DB 군)으로 나누었다. 식이 및 식수는 자유섭취하게 하였으며 4주간 사육한 후 희생시켰다. 간 조직 중의 항산화 효소계인 GSH-px 및 catalase 활성은 정상군(N 군)에 비해 HF 군에서는 유의적으로 감소되었으나 HF 군에 비해 뱀딸기풀 파우더 공급군(DA 및 DB 군)에서는 유의적으로 증가되었다. 유리기를 소거하는 지표인 간조직의 superoxide radical 함량을 microsome에서 측정한 결과 정상군에 비해 HF 군에서 유의적인 증가를 나타내었으나 뱀딸기풀 공급으로 유의하게 감소되었다. 또한 mitochondria에서는 HF 군에 비해 DB 군에서 정상군 수준으로 감소되어졌다. 간조직의 cytosol에서 $H_2O_2$의 함량에서는 DA 및 DB 군 모두에서 유의적인 감소로 정상군 수준을 나타내었다. 간조직의 microsome 및 mitochondria에서의 산화단백질 함량은 정상군에 비해 HF 군에서 유의적으로 증가 되었으나 뱀딸기풀 파우더의 공급으로 유의적으로 감소하였다. 과산화지질의 함량을 간조직에서 관찰 한 결과, 정상군에 비해 HF 군에서 유의적으로 증가하였고, 또한 고지방 고콜레스테롤 식이로 인해 증가된 과산화지질은 뱀딸기풀 파우더를 공급한 군에서 감소를 나타내었으며, 특히 10% 공급한 군에서 유의한 결과를 나타내었다. 이러한 결과로 미루어 뱀딸기풀에 함유된 여러 항산화성분들은 효과적으로 활성산소종을 소거하여 고지방 고콜레스테롤 식이로 인해 유발된 산화적 손상을 효과적으로 완화시켰을 것이라 사료되어진다.

This study was attempted to investigate the effects of Duchesnea chrysantha (DC) on antioxidative activities by in vivo. Rats were divided into four experimental groups which are composed of normal diet group (N group), high fat high cholesterol diet group (HF group), high fat high cholesterol diet with 5% DC powder supplemented group (DA group) and high fat high cholesterol diet with 10% DC powder supplemented group (DB group). Supplementation of DC powder groups resulted in increased activities of hepatic glutathione peroxidase and catalase. The microsomal superoxide radical contents of the DA and DB groups were significantly reduced compared to the high fat high cholesterol diet group. The mitochondrial superoxide radical contents of the DB group were significantly reduced compared to the high fat high cholesterol diet group. Hepatic hydrogen peroxide contents in cytosol were significantly reduced 5% and 10% DC powder supplemented group. The carbonyl values contents in mitochondria and microsome of the DA and DB groups were significantly reduced compared to the HF group. Thiobarbituric acid reaction substance (TBARS) values in liver were reduced in 10% DC powder supplemented group compared to the HF group. These results suggest that DC powder may have a strong regulatory effect in the activation of the antioxidative defense system.

키워드

참고문헌

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