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Insulin Sensitizing and Insulin-like Effects of Water Extracts from Kalopanax pictus NAKAI in 3T3-L1 Adipocyte  

Kim, Ho-Kyoung (Korea Institute of Oriental Medicine)
Park, Sun-Min (Department of Food and Nutrition, Hoseo University)
Ko, Byoung-Seob (Korea Institute of Oriental Medicine)
Publication Information
Applied Biological Chemistry / v.45, no.1, 2002 , pp. 42-46 More about this Journal
Abstract
Effects of the water extract from Kalopanax pictus NAKAI on insulin-like action and glucose uptake in 3T3-L1 cells were investigated. The bark of K. pictus NAKAI was treated with hot water and the extract was freeze-dried. Total extract of K. pictus NAKAI was fractionated into 6 fractions with increasing gradients from 0 to 100% MeOH on Amberlite XDA-4. Treatment of 3T3-L1 fibroblasts with 1 ${\mu}g/ml$ and 10 ${\mu}g/ml$ of K. pictus NAKAI total extracts significantly increased the differentiation of the cells. When co-treated with inducers such a dexamethasone, 1-methyl-3-isobutylxanthine and insulin, the differentiation was increased at 1 ${\mu}g/ml$ of total extract, but not at 10 ${\mu}g/ml$. In 3T3-L1 adipocytes, glucose uptake was increased by 3.3 times with addition of 0.3 and 3 ${\mu}g/ml$ of Fr. 1 (0-10% MeOH) and Fr. 3 (30% MeOH) at 3 ng/ml insulin. In conclusion, K. pictus NAKAI contains such compounds that play a role of insulin-like action and insulin sensitizer.
Keywords
Kalopanax pictus NAKAI; 3T3-L1 cell; insulin-like substances; glucose uptake; insulin resistance; insulin sensitizer;
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