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고지방식이로 유도한 비만 Mice에서 잣송이 초임계 추출물의 항비만 효과

Anti-Obesity Effect of Pine Cone (Pinus koraiensis) Supercritical Extract in High-Fat Diet-Induced Obese Mice

  • 이다솜 (경희대학교 동서의학대학원 의학영양학과) ;
  • 이민희 (경희대학교 동서의학대학원 의학영양학과) ;
  • 김혜숙 (경희대학교 동서의학대학원 동서의학과) ;
  • 정특래 ((주)키토라이프) ;
  • 양현필 ((주)키토라이프) ;
  • 허석현 (한국건강기능식품협회) ;
  • 이정민 (경희대학교 동서의학대학원 의학영양학과)
  • 투고 : 2016.08.19
  • 심사 : 2016.09.20
  • 발행 : 2016.12.31

초록

본 연구에서는 C57BL/6J 마우스에 고지방 식이를 통한 비만을 유도시키며 동시에 잣송이 초임계 추출물을 식이에 첨가하여 8주간 식이 투여하여 항비만 식품 소재로서의 기능성을 알아보고자 하였다. 잣송이 초임계 추출물 20 mg/kg b.w.(HFD+PC low), 잣송이 초임계 추출물 100 mg/kg b.w. (HFD+PC high) 섭취군의 체중증가량은 고지방식이 유도 비만 대조군(HFD)에 비해 각각 유의적으로 감소하였고, 간, 백색 지방, 총 지방 무게의 변화량 역시 잣송이 초임계 추출물 섭취군이 HFD군에 비해 유의적으로 감소하였다. 실험동물의 혈청 지질 함량은 총콜레스테롤, 중성지방, LDL/VLDL 콜레스테롤, HDL 콜레스테롤이 HFD군에 비해 잣송이 초임계 추출물 섭취군에서 유의적으로 감소하였으나, HDL/LDL 비율을 계산한 결과에서는 잣송이 초임계 추출물 섭취군이 HFD군에 비해 유의적으로 증가하였음을 확인하였다. 실험동물군의 지방 조직에서 adipogenic transcription factor ($PPAR-{\gamma}$, SREBP, C/EBP)의 발현을 측정한 결과, 잣송이 초임계 추출물 섭취군이 HFD군에 비해 유의적으로 감소하였다. 또한, adipogenic enzyme(FAS, LPL)의 발현을 측정한 결과, 잣송이 초임계 추출물 섭취군이 HFD군에 비해 유의적으로 감소하였다. 이러한 결과로부터 잣송이 초임계 추출물이 항비만 효과를 가진 천연 기능성 식품의 개발에 있어 기초 자료로 활용할 수 있을 것으로 기대할 수 있다.

The present study investigated the anti-obesity effect of pine cone (PC, Pinus koraiensis) supercritical extract in high-fat diet (HFD)-induced obese mice. Male C57BL/6J mice were treated with HFD, HFD+catechin, and HFD+PC [two different doses, 20 mg/kg body weight (b.w.) and 100 mg/kg b.w.] in each AIN93G supplement for 8 weeks. Treatment of HFD mice with both low and high doses of PC significantly reduced body weight gain compared to HFD mice. Liver weight of mice was reduced in both the low and high dose PC-supplemented groups (24.19% and 19.83%, respectively). Total adipose tissue weight of mice was reduced in both the low and high dose PC-supplemented groups (45.54% and 62.66%, respectively). Serum total cholesterol, triglyceride, LDL cholesterol, and HDL cholesterol were reduced in the low and high dose PC-supplemented groups, and ratios of HDL cholesterol to LDL cholesterol increased by 94.55% in the high dose PC-supplemented group. Serum leptin was significantly reduced in the low and high dose PC-supplemented groups (28.14% and 62.72%, respectively). These results were supported by genetic expression of protein and enzymes related to lipid metabolism assessed by real-time PCR. There was significant reduction of lipid regulatory transcription factors such as $PPAR-{\gamma}$, C/EBP, and SREBP and lipid enzymes such as fatty acid synthesis and lipoprotein lipase in the low and high dose PC-supplemented groups. However, there was no statistical difference between low and high dose PC treatments. These results suggest that pine cone supercritical extract supplementation is able to regulate serum lipid profiles by reducing total cholesterol, triglyceride, and LDL cholesterol levels, followed by regulation of expression of lipid metabolic factors, resulting in reduction of weight gain in HFD-induced obese mice.

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피인용 문헌

  1. 잣송이 추출물의 급여가 세미브로일러의 생산성, 소화기관 특성 및 장내 미생물에 미치는 영향 vol.46, pp.4, 2016, https://doi.org/10.5536/kjps.2019.46.4.305