Sesamol intervention ameliorates obesity-associated metabolic disorders by regulating hepatic lipid metabolism in high-fat diet-induced obese mice

  • Hong Qin Department of Nutrition Science and Food Hygiene, Xiangya School of Public Health, Central South University
  • Haiyan Xu Department of Nutrition Science and Food Hygiene, Xiangya School of Public Health, Central South University
  • Liang Yu Department of Research and Development Office, Hunan First Normal University
  • Lina Yang Department of Nutrition Science and Food Hygiene, Xiangya School of Public Health, Central South University
  • Cui Lin Department of Nutrition Science and Food Hygiene, Xiangya School of Public Health, Central South University
  • Jihua Chen Department of Nutrition Science and Food Hygiene, Xiangya School of Public Health, Central South University
Keywords: sesamol; obesity; liver; lipid metabolism

Abstract

Background: Obesity has currently become a serious social problem to be solved. Sesamol, a natural bioactive substance extracted from sesame oil, has shown multiple physiological functions, and it might have an effect on the treatment of obesity.

Objective: This study was conducted to investigate the therapeutic effect and potential mechanisms of sesamol on the treatment of obesity and metabolic disorders in high-fat diet (HFD)-induced obese mice.

Methods: C57BL/6J male mice were fed HFD for 8 weeks to induce obesity, followed by supplementation with sesamol (100 mg/kg body weight [b.w.]/day [d] by gavage) for another 4 weeks. Hematoxylin and eosin staining was used to observe lipid accumulation in adipose tissues and liver. Chemistry reagent kits were used to measure serum lipids, hepatic lipids, serum alanine aminotransferase (ALT), and aspartate aminotransferase (AST) levels. ELISA kits were used to determine the serum insulin and free fatty acid (FFA) levels. Western blotting was used to detect the protein levels involved in lipid metabolism in the liver.

Results: Sesamol significantly reduced the body weight gain of obese mice and suppressed lipid accumulation in adipose tissue and liver. Sesamol also improved serum and hepatic lipid profiles, and increased insulin sensitivity. In the sesamol-treated group, the levels of serum ALT and AST decreased significantly. Furthermore, after sesamol treatment, the hepatic sterol regulatory element binding protein-1 (SREBP-1c) decreased, while the phosphorylated hormone sensitive lipase (p-HSL), the carnitine palmitoyltransferase 1α (CPT1α), and the peroxisome proliferator-activated receptor coactivator-1α (PGC1α) increased, which were responsible for the fatty acid synthesis, lipolysis, and fatty acid β-oxidation, respectively.

Conclusions: Sesamol had a positive effect on anti-obesity and ameliorated the metabolic disorders of obese mice. The possible mechanism of sesamol might be the regulation of lipid metabolism in the liver.

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References


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Published
2019-10-23
How to Cite
1.
Qin H, Xu H, Yu L, Yang L, Lin C, Chen J. Sesamol intervention ameliorates obesity-associated metabolic disorders by regulating hepatic lipid metabolism in high-fat diet-induced obese mice. fnr [Internet]. 2019Oct.23 [cited 2019Nov.21];630. Available from: https://foodandnutritionresearch.net/index.php/fnr/article/view/3637
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