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Nutrients 2018, 10(11), 1567; https://doi.org/10.3390/nu10111567

Ginger Extract Ameliorates Obesity and Inflammation via Regulating MicroRNA-21/132 Expression and AMPK Activation in White Adipose Tissue

1
Department of Nutritional Science and Food Management, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea
2
Department of Integrated Biomedical and Life Sciences, Korea University, Seoul 02841, Korea
3
Research Group of Bioprocess Engineering, Korea Food Research Institute, Wanju-gun, Jeollabuk-do 55365, Korea
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 12 September 2018 / Revised: 8 October 2018 / Accepted: 19 October 2018 / Published: 23 October 2018
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Abstract

Ginger is a plant whose rhizome is used as a spice or folk medicine. We aimed to investigate the effect of ginger root extract on obesity and inflammation in rats fed a high-fat diet. Sprague-Dawley rats were divided into three groups and fed either a 45% high-fat diet (HF), HF + hot-water extract of ginger (WEG; 8 g/kg diet), or HF + high-hydrostatic pressure extract of ginger (HPG; 8 g/kg diet) for 10 weeks. The HPG group had lower body weight and white adipose tissue (WAT) mass compared to the HF group. Serum and hepatic lipid levels of HPG group were lower, while fecal lipid excretion of the HPG group was higher than that of the HF group. In the WAT of the WEG and HPG groups, mRNA levels of adipogenic genes were lower than those of the HF group. Moreover, HPG group had lower mRNA levels of pro-inflammatory cytokines than did the HF group. MicroRNA (miR)-21 expression was down-regulated by both WEG and HPG. Additionally, miR-132 expression was down-regulated by HPG. The adenosine monophosphate-activated protein kinase (AMPK) activity of HPG group was greater than that of the HF group. HPG may have beneficial effects on obesity and inflammation, partially mediated by regulation of miR-21/132 expression and AMPK activation in WAT. View Full-Text
Keywords: ginger extract; obesity; inflammation; microRNA-21; microRNA-132; AMPK ginger extract; obesity; inflammation; microRNA-21; microRNA-132; AMPK
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Kim, S.; Lee, M.-S.; Jung, S.; Son, H.-Y.; Park, S.; Kang, B.; Kim, S.-Y.; Kim, I.-H.; Kim, C.-T.; Kim, Y. Ginger Extract Ameliorates Obesity and Inflammation via Regulating MicroRNA-21/132 Expression and AMPK Activation in White Adipose Tissue. Nutrients 2018, 10, 1567.

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