KMID : 0043320140370060803
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Archives of Pharmacal Research 2014 Volume.37 No. 6 p.803 ~ p.812
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Echinacea purpurea root extract enhances the adipocyte differentiation of 3T3-L1 cells
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Shin Dong-Mi
Choi Kyeong-Mi Lee Youn-Sun Kim Won-Kyun Shin Kyong-Oh Oh Sei-Kwan Jung Jae-Chul Lee Mi-Kyeong Lee Yong-Moon Hong Jin-Tae Yun Yeo-Pyo Yoo Hwan-Soo
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Abstract
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Echinacea purpurea has been shown to have anti-diabetic activities; for example, it activates peroxisome proliferator-activated receptor ¥ã (PPAR¥ã) and increases insulin-stimulated glucose uptake. Adipogenesis has been used to study the insulin signaling pathway and to screen anti-diabetic compounds. The present study was conducted to investigate the effects of an ethanol extract of E. purpurea (EEEP) and its constituents on the insulin-induced adipocyte differentiation of 3T3-L1 preadipocytes. When adipocyte differentiation was induced with insulin plus 3-isobutyl-1-methylxanthine and dexamethasone, the accumulation of lipid droplets and the cellular triglyceride content were significantly increased by EEEP. The expressions of PPAR¥ã and C/EBP¥á in adipocytes treated with EEEP were gradually increased as compared with control cells. Fat accumulation and triglyceride content of adipocytes treated with dodeca-2(E),4(E)-dienoic acid isobutylamide were significantly increased as compared with control cells. The expressions of PPAR¥ã and C/EBP¥á in adipocytes treated with dodeca-2(E),4(E)-dienoic acid isobutylamide were significantly higher than in control cells. These results suggest EEEP promotes the adipogenesis that is partially induced by insulin and that dodeca-2(E),4(E)-dienoic acid isobutylamide appears to be responsible for EEEP-enhanced adipocyte differentiation.
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KEYWORD
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Echinacea purpurea, 3T3-L1 cells, Adipocyte differentiation, Insulin, Dodeca-2(E), 4(E)-dienoic acid isobutylamide
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