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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Lipolytic Effect of Sparassis crispa Extracts in Differentiated 3T3-L1 Cells and High Fat Diet-induced Obese Mice

분화된 3T3-L1 세포와 비만유도 쥐에 꽃송이버섯 추출물의 지질분해 효과

  • Lee, Mi-Ae (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University) ;
  • Park, Jin-Kyung (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University) ;
  • Um, Mi-Hyang (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University) ;
  • Jeon, Jung-Woo (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University) ;
  • Lee, Jung-Min (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University) ;
  • Park, Yoo-Kyoung (Dept. of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University)
  • 이미애 (경희대학교 동서의학대학원 의학영양학과) ;
  • 박진경 (경희대학교 동서의학대학원 의학영양학과) ;
  • 엄미향 (경희대학교 동서의학대학원 의학영양학과) ;
  • 전정우 (경희대학교 동서의학대학원 의학영양학과) ;
  • 이정민 (경희대학교 동서의학대학원 의학영양학과) ;
  • 박유경 (경희대학교 동서의학대학원 의학영양학과)
  • Received : 2012.08.09
  • Accepted : 2012.11.28
  • Published : 2012.12.31
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Abstract

The purpose of this study was to investigate whether water extracts of Sparassis crispa (SC) have anti-obesity effects. Treatment of mature adipocytes with SC caused a decrease in lipid accumulation (assessed by Oil Red O staining) and an increase in glycerol release. Mice were induced to obesity by a high fat diet (45% fat in total kcal) and experimental groups were treated with two different dosages of SC extracts, a low SC (LSC, 100 mg/kg/day) or high SC (HSC, 300 mg/kg/day). SC extracts were administered by gavages for 10 weeks in the experimental groups, while the control group was fed with distilled water. The body weight gain of mice fed SC was significantly reduced (11.88% lower in LSC, 14.54% lower in HSC) compared to the control group. Additionally, there were significantly reduced serum levels of triglycerides (13.57% lower in LSC, 19.46% lower in HSC), total cholesterol (32.22% lower in LSC, 24.67% lower in HSC) and glucose (28.85% lower in LSC, 25.82% lower in HSC) in mice fed SC compared to the control group. Hepatic triglycerides in mice fed SC were lower (9.68% lower in LSC, 14.24% lower in HSC) than the control group and total cholesterol levels were also lower in mice fed SC (38.72% lower in LSC, 35.20% in HSC). These results demonstrate that the water extract of SC may enhance lipolysis and up-regulate the expression of lipolytic enzymes in vitro and reduce body weight in vivo. These significant effects were found for both low and high doses of SC treatment, and suggest SC can be used as potential therapeutic substances for the prevention and treatment of obesity.

본 연구에서는 꽃송이버섯 추출물을 처리하여 분화된 3T3-L1 지방 세포와 비만 유도 쥐에서 지질분해 효과를 살펴보았다. In vitro, preadipocyte에서 MTT assay를 이용하여 세포독성 실험을 한 결과 시간, 농도에 관계없이 세포생존율에 영향을 미치지 않았고, 분화된 지방세포에서의 지방분해 효과는 농도 의존적으로 감소되는 것을 확인할 수 있다. 이외에도 지방세포에서 지방분해 산물인 glycerol 양을 측정한 결과 48, 72시간에서 시간, 농도 의존적으로 유의성 있게 증가하였다. Lipolytic enzyme의 CPT-1 및 UCP-2 발현을 측정하기 위해 Western blot assay를 실시한 결과 꽃송이버섯 열수추출물이 CPT-1 및 UCP-2의 발현을 증가시키는 것을 확인할 수 있었다. In vivo에서 고지방 식이에 의해 비만이 유도된 쥐에 꽃송이버섯 열수추출물을 처리한 후 실험 종료 시 실험동물의 체중은 고지방식이를 공급한 군에 비해 저농도, 고농도 꽃송이버섯을 처리한 군 각각 유의적으로 감소하였다. 실험동물의 장기와 지방조직 무게를 측정한 결과, 대조군에 비해 추출물을 처리한 군에서 체중과 장기 및 지방조직의 감소가 저농도, 고농도 모두 유의하게 나타났으며, 혈청 및 간의 지질함량을 측정한 결과, 혈청지질의 중성지방, 총 콜레스테롤 함량 모두 대조군에 비해 유의적으로 낮게 나타났으며, HDL-콜레스테롤 함량은 유의적으로 높게 나타났다. 간의 지질함량을 측정한 결과 중성지방은 유의적으로 낮게 나타났고 총 콜레스테롤 역시 대조군에 비해 유의적으로 낮게 나타났다. 따라서 혈청 및 간의 지질함량을 측정한 결과 꽃송이버섯 열수추출물이 비만이 유도된 쥐의 혈청 및 간의 지질 농도 변화를 낮추는 효과가 있다고 사료된다. 따라서 꽃송이버섯 열수추출물은 lipolytic enzyme의 발현을 증가시켜 지방산의 산화 반응 및 열 발생에 의한 에너지 소비율을 증가시켜 lipid accumulation을 감소시키며, 이로 인한 체중 감소 및 혈청이나 간의 지질함량을 개선시켜 지질분해 효과를 보여줌으로써 비만 예방 및 치료를 목적으로 하는 식품 소재로서의 활용이 가능할 것으로 생각된다.

Keywords

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