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

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effects of Alginate Oligosaccharide on Lipid Metabolism in Mice Fed a High Cholesterol Diet

알긴산 올리고당이 고콜레스테롤식이를 급여한 마우스의 지질대사에 미치는 영향

  • Received : 2014.03.03
  • Accepted : 2014.03.31
  • Published : 2014.04.30
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Abstract

This study investigated the effects of alginate oligosaccharide on lipid metabolism in mice fed a high-cholesterol diet for 6 weeks. Male apoE mice were assigned to four groups: normal diet group (N), high-cholesterol diet group (HC), HC with 5% alginate oligosaccharide group (HC-AOL), and 10% alginate oligosaccharide group (HC-AOH). Epididymal adipose tissue and kidney adipose tissue weights were significantly reduced in the HC-AOH group by 131.4% and 148.4%, respectively, as compared to the HC group. Serum total cholesterol (TC), triglyceride (TG), and LDL-cholesterol levels were also significantly reduced in the HC-AOH group by 57.5%, 51.4%, and 82.9%, respectively, as compared to the HC group. Hepatic TC and TG levels in the HC-AOH group were significantly reduced by 72.3% and 33.5%, respectively, as compared to the HC group. These results indicate that alginate oligosaccharide might improve lipid metabolism and reduce fat accumulation.

본 연구는 고콜레스테롤 식이를 급여한 마우스의 지질대사에 알긴산 올리고당이 미치는 영향을 조사하였다. 실험동물은 4주령 된 수컷 apoE 마우스를 사용하였으며, 정상군, 고콜레스테롤 식이대조군, 알긴산 올리고당 5%와 10% 첨가군으로 나누어 6주간 급여하였다. 실험식이는 AIN-93G 식이를 기본으로 하여 콜레스테롤(1%, w/w)을 혼합하였으며, 알긴산 올리고당을 각각 5%와 10% 수준으로 혼합하였다. 실험기간 동안 증체량은 고콜레스테롤 식이대조군에 비해 알긴산 올리고당 10% 첨가군이 약 7.6% 유의적으로 감소하였다(P<0.05). 장기조직 중 신장 주변지방과 부고환지방의 무게는 고콜레스테롤 식이대조군이 정상군에 비해 각각 42.6%, 27.6% 유의적으로 증가하였다(P<0.05). 반면 알긴산 올리고당 첨가군은 신장 주변지방과 부고환지방 무게가 고콜레스테롤 식이대조군보다 2배 이상 유의적으로 감소하였다(P<0.05). 고콜레스테롤 섭취는 혈청 중 총 콜레스테롤, 중성지방, LDL-콜레스테롤 수준을 정상군보다 각각 16%, 12%, 47.1% 유의적으로 증가시켰으며, 반면에 알긴산 올리고당 10%를 섭취한 경우 고콜레스테롤 식이대조군보다 각각 57.5%, 51.4%, 82.9% 유의적으로 감소시켰다 (P<0.05). 혈청 HDL-콜레스테롤 함량은 실험군간 유의적 차이는 크게 나타나지 않았으나, 전체 콜레스테롤에 대한 HDL-콜레스테롤 비율에서 알긴산 올리고당 첨가군이 유의적으로 높았다(P<0.05). 간 조직 내 지질 수준은 고콜레스테롤을 섭취했을 경우 정상군에 비해 유의적으로 증가하였으나, 알긴산 올리고당 10%를 섭취했을 때 고콜레스테롤 식이대조군보다 총 콜레스테롤 함량은 3배 이상, 중성지방 함량은 33.5% 유의적으로 감소하였다(P<0.05). 고콜레스테롤 식이군에서 나타난 분변 내 총 콜레스테롤 함량은 알긴산 올리고당 10% 첨가군에서 정상군보다 21% 유의적으로 증가하였다(P<0.05). 이상의 실험 결과 고콜레스테롤 식이와 알긴산 올리고당을 함께 섭취한 마우스는 체중 감량과 장기 내 지방의 중량을 감소시켜 비만 예방효과가 있고, 혈액, 간지질 및 분변 지질 수준의 개선 효과가 높아 지질대사와 관련된 만성질환 예방에 효과가 있을 것으로 기대된다.

Keywords

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