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

  • 제43권2호
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  • Pages.200-206
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  • 2014
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  • 1226-3311(pISSN)
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  • 2288-5978(eISSN)
한국식품영양과학회 (The Korean Society of Food Science and Nutrition)
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어린 으름잎 추출물(Akebia quinata D. Leaves)의 항비만 효과

Anti-obesity Effects of Extracts from Young Akebia quinata D. Leaves

  • 전용섭 (전남대학교 식품영양과학부) ;
  • 유양희 (전남대학교 생활과학연구소) ;
  • 전우진 (전남대학교 식품영양과학부)
  • Jeon, Yongseop (Div. of Food and Nutrition, Chonnam National University) ;
  • You, Yanghee (Research Institute for Human Ecology, Chonnam National University) ;
  • Jun, Woojin (Div. of Food and Nutrition, Chonnam National University)
  • 투고 : 2013.12.02
  • 심사 : 2014.01.13
  • 발행 : 2014.02.28
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초록

본 연구에서 어린 으름잎으로부터 추출된 열수추출물인 AQH와 80% 주정추출물인 AQE를 대상으로 3T3-L1 전지방세포의 지방세포 분화과정 중에 처리한 후, Oil Red O 염색법에 의한 lipid accumulation, intracellular 중성지방 함량을 평가하고 free glycerol release 함량을 측정하여 지방세포형성 억제능을 확인하며, ICR 마우스를 대상으로 고지방식이 섭취 하에 어린 으름잎 추출물의 경구투여에 따른 체중과 백색지방에 작용하는 효과를 평가하여 어린 으름잎 추출물의 항비만 효과를 밝히고자 하였다. 3T3-L1 지방세포 분화과정 중 AQH 및 AQE 추출물을 처리한 결과 AQE 처리군에서만 유의적 감소를 나타내었다. Intracellular 중성지방 함량의 경우도 AQE 처리군에서 유의적으로 감소되었다. 지방세포 분화 중 배양액으로 유출되는 free glycerol 함량을 평가한 결과에서도 AQE 처리군의 유의적 감소를 확인할 수 있었다. 이상의 결과를 통해 AQE는 3T3-L1 지방세포 분화과정 중에 지방구 생성 억제 및 지방세포의 지방세포 생성 억제효과가 있는 것으로 판명되었다. 마우스에서 8주간 고지방식이 하에 600 mg/kg/day의 AQE를 경구투여 하였을 때 고지방식이군과 비교하여 체중 및 체중증가량이 통계적으로 유의하게 감소하였고, 부정소 주위 및 신장 주위 백색지방의 감소가 나타났다. AQE 투여에 의한 체중 감소 및 부정소 주위 백색지방량의 감소는 양성대조군으로 사용한 Orlistat의 경구투여 결과와 유사하였다. 이상의 결과로 세포수준에서의 지방세포 분화 억제, 지방구 생성 억제 작용과 실험동물에서 체중증가량 및 체지방의 감소 작용을 갖는 AQE는 향후 항비만 효과를 갖는 소재로 유용하게 사용될 수 있을 것으로 사료된다.

We investigated the in vitro and in vivo anti-obesity effects of extracts from young Akebia quinata D. leaves, including hot water (AQH) and 80% ethanol (AQE) extracts. The inhibitory effects of AQH and AQE on lipid accumulation in 3T3-L1 cells were examined by Oil Red O staining. Compared to control, lipid accumulation was significantly reduced by 18.3% with the treatment upon AQE at a concentration of $5{\mu}g/mL$. The levels of intracellular triglycerides and free glycerol were also reduced by 52.8% and 9.1% at the same concentration of AQE. The in vivo anti-obesity effect of AQE was evaluated in terms of body and white adipose tissue weights in ICR mice. Experimental groups were divided into the following five groups: normal diet (ND), high fat diet (HFD), high fat diet with 60 mg/kg/day of Orlistat (HFD-RF), high fat diet with 200 mg/kg/day of AQE (HFD-AL), and high fat diet with 600 mg/kg/day of AQE (HFD-AH). Feeding of HFD for eight weeks resulted in significant increases in body weight as well as weight gain compared to the ND group. HFD-AH group showed reduced body weight, weight gain, epididymal white adipose tissue weight, and perirenal white adipose weight as compared to the HFD group. These results indicate that AQE supplementation might have beneficial effects on anti-obesity by inhibiting lipid accumulation.

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