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http://dx.doi.org/10.17495/easdl.2015.2.25.1.99

Effects of Ethanol Extracts from Commonly Consumed Vegetables in Korea on Differentiation and Secretion of MCP-1 and Adiponectin in 3T3-L1 Adipocytes and Lipid Accumulation in HepG2 Hepatocytes  

Ahn, Eun Mi (Dept. of Agrofood Resources, National Academy of Agricultural Science)
Kang, Hyun Ju (Dept. of Agrofood Resources, National Academy of Agricultural Science)
Kim, Young (Dept. of Agrofood Resources, National Academy of Agricultural Science)
Choe, Jeong Sook (Dept. of Agrofood Resources, National Academy of Agricultural Science)
Kang, Min-Sook (Dept. of Agrofood Resources, National Academy of Agricultural Science)
Publication Information
Journal of the East Asian Society of Dietary Life / v.25, no.1, 2015 , pp. 99-110 More about this Journal
Abstract
The purpose of this study was to evaluate the inhibitory effects of commonly consumed vegetables in Korea on lipid accumulation and production of pro-inflammatory cytokines related to obesity/metabolic syndrome. Using KNHANES (Korea National Health and Nutrition Examination Survey) raw data ($1^{st}$; 1998, $5^{th}$; 2010, 2011) and a literature search, we selected vegetables for study. Edible portions of samples were prepared, ethanol-extracted, and then freeze-dried. 3T3-L1 adipocytes and HepG2 hepatocytes cells were used as in vitro models. Lipid accumulation determined by Oil-red O staining showed that all samples except bracken had inhibitory effects on lipid accumulation in 3T3-L1 adipocytes. Especially, crown daisy and mugwort effectively reduced accumulation of lipids, and their inhibition rates were more than 60% of the control group. Young pumpkin, leeks, crown daisy, and mugwort showed significantly decreased MCP-1 levels compared to the control group. However, adiponectin protein level did not increase in the vegetables experimental group. In HepG2 hepatocytes, all samples showed inhibitory effects on lipid accumulation at one of the two concentrations. Although adiponectin protein levels did not increase, MCP-1 protein levels decreased in adipocytes. Further, lipid accumulation in adipocytes and hepatocytes decreased. In conclusion, all samples showed one or more improved obesity/metabolic syndrome indicators. Among them, young pumpkin, leeks, crown daisy, and mugwort were selected as the most effective portions of vegetables based on improvement of obesity/metabolic syndrome-related indicators.
Keywords
Commonly consumed vegetables; 3T3-L1 adipocytes; HepG2 hepatocytes; lipid accumulation; MCP-1;
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