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http://dx.doi.org/10.9799/ksfan.2017.30.3.531

Effects of Garlic on Uncoupling Protein 2 (UCP2) Transcriptional Regulation in Metabolic Tissues of UCP2 Transgenic Mice Fed on a High-Fat Diet  

Lee, Mak-Soon (Dept. of Nutritional Science and Food Management, Ewha Womans University)
Lee, Seohyun (Dept. of Nutritional Science and Food Management, Ewha Womans University)
Shin, Yoonjin (Dept. of Nutritional Science and Food Management, Ewha Womans University)
Jung, Sunyoon (Dept. of Nutritional Science and Food Management, Ewha Womans University)
Park, Seonyoung (Dept. of Nutritional Science and Food Management, Ewha Womans University)
Kim, Yangha (Dept. of Nutritional Science and Food Management, Ewha Womans University)
Publication Information
The Korean Journal of Food And Nutrition / v.30, no.3, 2017 , pp. 531-538 More about this Journal
Abstract
This study was performed to investigate the effects of garlic on uncoupling protein 2 (UCP2) transcriptional regulation of UCP2-luciferase transgenic mice fed on a high fat diet to induce obesity. To examine the transcriptional regulation of UCP2, we generated transgenic mice with a UCP2 promoter (-1,830/+30 bp) containing luciferase as a reporter gene. UCP2-luciferase transgenic mice were fed a 45% high-fat diet for 8 weeks to induce obesity. Subsequently, mice were maintained on either a high-fat control diet (TG-CON), or high-fat diets supplemented with 2% (TG-GL2) or 5% (TG-GL5) garlic for a further 8 weeks. Dietary garlic reduced body weight and energy efficiency ratio in the TG-GL5 group, compared to the TG-CON group. Furthermore, garlic supplementation significantly decreased white adipose tissue fat mass and plasma levels of triglycerides, total cholesterol, and leptin in the TG-GL2 and TG-GL5 groups, compared to the TG-CON group. Specifically, UCP2 promoter activity in metabolic tissues such as liver, white adipose tissue, brown adipose tissue, and skeletal muscle was increased by garlic supplementation. These results suggest that dietary garlic was partially associated with an increase of UCP2 transcriptional activity in metabolic tissues for decreasing obesity.
Keywords
garlic; obesity; UCP2; transcriptional regulation; UCP2 transgenic mouse;
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