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Anti-Obesity Effect of Schizandrae Fructus Water Extract through Regulation of AMPK/Sirt1/PGC-1α signaling pathway

AMPK/Sirt1/PGC-1α 신호 전달 경로의 조절을 통한 오미자 추출물의 비만 개선 효과

  • Lee, Se Hui (Department of Herbology, College of Korean Medicine, Daegu Haany University) ;
  • Park, Hae-Jin (DHU Bio Convergence Testing Center) ;
  • Shin, Mi-Rae (Department of Herbology, College of Korean Medicine, Daegu Haany University) ;
  • Roh, Seong-Soo (Department of Herbology, College of Korean Medicine, Daegu Haany University)
  • 이세희 (대구한의대학교 한의과대학 본초약리학교실) ;
  • 박해진 (대구한의대학교 DHU바이오융복합시험센터) ;
  • 신미래 (대구한의대학교 한의과대학 본초약리학교실) ;
  • 노성수 (대구한의대학교 한의과대학 본초약리학교실)
  • Received : 2022.02.16
  • Accepted : 2022.03.25
  • Published : 2022.03.30

Abstract

Objectives : Although the anti-obesity effect of Schizandrae Fructus water extract has been demonstrated, its underlying mechanism is still unclear. Therefore, we aimed to evaluate the anti-obesity effect of Schizandrae Fructus water extract through the p-AMP-activated protein kinase (p-AMPK), sirtuin1 (Sirt1), and peroxisome proliferator-activated receptor-gamma coactivator 1α (PGC-1α) signaling in 60% high-fat diet (HFD)-induced obese mouse model. Methods : Male C57BL/6 mice were divided into four groups. The Normal group was fed a normal diet and the obese groups were fed 60% HFD. Except for the Control group, the GG group was supplemented with 0.5% Garcinia gummigutta and the SCW group was supplemented with 0.5% Schizandrae Fructus water extract. After 6 weeks, obesity-related biomarkers in serum were measured and the expressions of protein for lipid-related factors in liver tissue were analyzed by western blot. Results : Treatment with SCW significantly down-regulated body weight compared to the Control group. SCW down-regulated levels of triglyceride and total cholesterol in serum and significantly increased p-AMPK, Sirt1, and PGC-1α in liver tissue. In addition, the expressions of fatty acid oxidation-related proteins such as peroxisome proliferator-activated receptor α (PPARα), carnitine palmitoyltransferase 1A (CPT-1A), uncoupling protein 1 (UCP1), and uncoupling protein 3 (UCP3) were significantly up-regulated. However, fatty acid synthesis-related proteins including sterol regulatory element-binding protein-1 (SREBP-1), phospho-Acetyl-CoA Carboxylase (p-ACC), and fatty acid synthase (FAS) were significantly down-regulated. Conclusions : Taken together, SCW treatment showed anti-obesity effect by regulating both fatty acid oxidation-related and fatty acid synthesis-related proteins through AMPK/Sirt1/PGC-1α signaling in 60% HFD-induced obese mice.

Keywords

Acknowledgement

본 연구는 농촌진흥청 연구사업 (과제번호: PJ014251022021)의 지원에 의해 수행되었습니다.

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