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Anti-obesity Effects of Ishige okamurae Extract in C57BL/6J mice Fed High-fat Diet

패 추출물이 고지방식이로 비만이 유도된 C57BL/6J 마우스의 항비만 효과에 미치는 영향

  • Park, Se-Jin (Department of Food Science and Nutrition, Pusan National University) ;
  • Jeon, You-Jin (Department of Marine life Science, Jeju National University) ;
  • Kim, Hak-Ju (Soejin Biotech Co., Ltd.) ;
  • Han, Ji-Sook (Department of Food Science and Nutrition, Pusan National University)
  • Received : 2012.08.17
  • Accepted : 2013.01.29
  • Published : 2013.04.30

Abstract

We investigated the anti-obesity effects of Ishige okamurae extract (IOE) on body weight, epididymal adipose tissue weight, plasma lipid levels, and leptin levels in high-fat diet (HFD)-induced obese mice. After inducing obesity by feeding 45% HFD for 4 weeks, C57BL/6J mice were randomly assigned to HFD or HFD containing 5% IOE, and then fed for 6 weeks. The body weight and epididymal adipose tissue weight were increased by HFD, but they were significantly less in animals fed HFD containing 5% IOE than in those fed HFD. Levels of plasma triglyceride, total cholesterol, and LDL-cholesterol were significantly lower, but the HDL-cholesterol level was significantly higher in animals fed HFD containing 5% IOE compared with the HFD group. The plasma leptin level was significantly lower in animals fed HFD containing 5% IOE. The diet containing 5% IOE did not show any adverse effects on liver and kidney functions. These results suggest that IOE has a potential as anti-obesity agent by reducing body weight and lowering the levels of obesity-related factors in plasma.

본 연구는 패 추출물의 항비만 효과를 조사하기 위해 C57BL/6J mice에 4주 동안 고지방 식이를 공급하여 비만을 유도한 후에, 6주간 패 추출물을 첨가한 고지방 사료를 섭취시키고 체중, 간, 신장 및 부고환 지방조직 무게, 혈액과 간의 지질 농도 및 혈중 렙틴 함량을 분석하였다. 실험 결과 HFD군에서는 고지방식이로 인하여 체중이 유의하게 증가하였으나, HFDIO군에서는 HFD군보다 체중의 증가가 유의하게 적었으며, 부고환 지방조직의 무게도 HFDIO군이 HFD군보다 유의하게 감소하였다. 고지방식이로 혈중 중성지방, 총 콜레스테롤, LDL콜레스테롤의 함량은 HFD군에서 가장 높게 나타났으나 HFDIO군에서는 유의하게 낮아졌으며 반면에 HDL콜레스테롤의 함량은 HFDIO군이 HFD군보다 유의하게 높았다. 이에 동맥경화지수와 심혈관질환위험도가 HFD군에 비해 HFDIO군에서 유의하게 낮아졌으며, 혈중 렙틴의 양도 HFDIO군이 유의하게 낮아지는 결과를 얻었다. 간 기능의 지표가 되는 ALT, AST, ${\gamma}$-GTP는 HFD군에서 유의하게 높은 값을 나타냈지만 모두 정상범위 내의 값을 나타내었고, 혈중 BUN과 혈중 Creatinine의 농도도 정상 범위 내의 값을 나타내었다. 이상의 실험 결과 고지방식이와 함께 급여한 패 추출물은 체중, 간 및 지방조직의 무게 감소와 더불어 혈장 및 간의 지질농도 개선과 혈장 렙틴 농도를 감소시키는 유용한 항비만 소재가 될 수 있을 것으로 사료된다. 앞으로 패의 어떠한 성분이 이러한 작용을 하는 지에 대한 더욱 체계적인 연구가 필요한 것으로 판단된다.

Keywords

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