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http://dx.doi.org/10.3746/jfn.2008.13.1.001

The Differential Immunomodulating Effects of Levan and DFA-IV on Macrophage Function  

Park, Sul-Kyoung (Department of Herbal Medicine Resource, Kangwon National University)
Jang, Ki-Hyo (Department of Food and Nutrition, Kangwon National University)
Kim, Mi-Hyun (Department of Food and Nutrition, Kangwon National University)
Lim, Jung-Dae (Department of Herbal Medicine Resource, Kangwon National University)
Han, Eun-Tek (Department of Parasitology, College of Medicine, Kangwon National University)
Jang, Seon-A (Department of Herbal Medicine Resource, Kangwon National University)
Kim, Kyung-Ho (College of Pharmacy, Sungkyunkwan University)
Pyo, Suhk-Neung (College of Pharmacy, Sungkyunkwan University)
Sohn, Eun-Hwa (Department of Herbal Medicine Resource, Kangwon National University)
Publication Information
Preventive Nutrition and Food Science / v.13, no.1, 2008 , pp. 1-6 More about this Journal
Abstract
Di-D-fructose-2,6':6,2'-dianhydride (DFA-IV) is a disaccharide consisting of two fructose residues that are prepared from levan by levan fructotransferase. Levan is a homopolysaccharide composed of D-fructofuranosyl residues joined by $\beta$-(2,6) and $\beta$-(2,1) linkages. We compared the immunomodulatory effects of levan with DFA-IV. Tumoricidal activity, phagocytosis and nitric oxide (NO) production were examined in levan- and DFA-IV-treated RAW264.7 cells. The NO production, tumoricidal and phagocytic activities were significantly increased in both treated cells. The results indicate that levan has significantly greater effects on tumoricidal activity than DFA-IV at low concentrations (1 ${\mu}g/mL$) and its effect on NO production shows a similar pattern. These results suggest that tumoricidal activity induced by both samples is mediated by NO production.
Keywords
di-$\beta$-D-fructofuranose dianhydride IV; DFA-IV; levan; macrophage; immunomodulation;
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