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http://dx.doi.org/10.3746/jkfn.2013.42.9.1513

Immunomodulatory Activities of Apple Seed Extracts on Macrophage  

Byun, Myung-Woo (School of Culinary Nutrition, Woosong University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.42, no.9, 2013 , pp. 1513-1517 More about this Journal
Abstract
This study examined the immunomodulatory activities of apple seed extracts (ASE). The immunomodulatory effects were estimated through nitric oxide production, cytokine induction, protein expression of inducible nitric oxide synthase (iNOS), and the phosphylation of mitogen-activated protein kinases (MAPKs) and inhibitory kappa $B{\alpha}$ ($I{\kappa}B-{\alpha}$) in the RAW 264.7 macrophage cell line. In the cytotoxicity asay, ASE (31 to $250{\mu}g/mL$) did not induce cytotoxicity; thus, the optimal concentration of ASE was confirmed to be less than $250{\mu}g/mL$. Nitric oxide (NO) and cytokines (tumor necrosis factor (TNF)-${\alpha}$ and interleukin (IL)-6) production significantly increased in a dose-dependent manner. Similarly, the protein expression of iNOS and the phosphorylation of MAPKs and $I{\kappa}B-{\alpha}$ were also increased by ASE treatment. Overall, our results suggest that extracts from apple seeds potentially have immunomodulatory activities on macrophages.
Keywords
apple seed; macrophage cells; cytotoxicity; nitric oxide production; cytokine production;
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