Effects of Loquat(Eriobotrya japonica Lindl.) Extracts in Different Aerial Components on Differentiation of 3T3-L1 Cells and Pig Preadipocytes
2016
Lee, H., Chosun University, Gwangju, Republic of Korea | Lee, J.J., Chosun University, Gwangju, Republic of Korea
The current study was undertaken to determine the effects of the ethanol extracts of loquat (Eriobotrya japonica Lindl.) seeds, flesh or leaves on the differentiation of 3T3-L1 cells and male pig preadipocytes. The cell number was measured with the MTT assay after trypsin digestion. The cell differentiation was determined by measuring the glycerol-3-phosphate dehydrogenase (GPDH) activity and triglyceride(TG) content. No cytotoxicity was observed from the loquat flesh and leaf ethanol extracts at concentrations of 5, 10, 25, 50, 100 or 200 μg/mL in 3T3-L1 cells and pig preadipocytes. However, the cell viability of neither cell line were affected by up 50 μg/mL of loquat seed ethanol extract. Treatment with the loquat seed and leaf ethanol extracts significantly suppressed the terminal differentiation of both cell lines in a dose-dependent manner, as confirmed by the decrease in the glycerol-3-phosphate dehydrogenase(GPDH) activity and TG content. Treatment with the loquat seed and leaf ethanol extracts inhibited the GPDH activity and reduced the TG content of both cell types more effectively than that with the loquat flesh ethanol extract. The most potent anti-adipogenic effect was obtained in the case of the ethanol extract of loquat seeds.
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