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Effect of Chlorella vulgaris on Immune-enhancement and Cytokine Production in vivo and in vitro
Hyo-Jin An,Hong-Kun Rim,Jong-Hyun Lee,Min-Jun Seo,Jin-Woo Hong,Na-Hyung Kim,Noh-Yil Myung,Phil-Dong Moon,In-Young Choi,Ho-Jeong Na,Su-Jin Kim,Hyun-Ja Jeong,Hyeung-Suk Park,Jae-Gab Han,Jae-Young Um,Seu 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.5
The object of this study was to investigate the immune-enhancing effects of Chlorella vulgaris (CV) on a deteriorated immune function by a protein-energy malnutrition (PEM) diet. Unicellular algae, CV were used as a biological response modifier. Male C57BL/6J mice were fed for 15 days with standard diet or a PEM diet, which is associated with decreased host immune defense. After 8 days, mice in the PEM diet group were orally administered by 0.05, 0.1, and 0.15 g/kg body weight of CV or distilled water. Nutritional parameters, and interferon (IFN)-γ levels were significantly increased in the blood serum of the CV (0.15 g/kg)-treated group (29.6±2.8 pg/mL) compared to the non-treated PEM group (4.1±0.4 pg/mL, p<0.05). In addition, cell proliferation and production of cytokines were investigated via a CV (0.01, 0.1, and 1 mg/mL) treatment using a human T cell line MOLT-4 cell. The CV treatment (1 mg/mL) significantly increased the production of both IFN-γ and interleukin (IL)-2 (51.3±3.4 and 285.9±18.8 pg/mL, respectively) compared to the control (51.3±3.4 and 442.6±14.3 pg/mL, respectively), but did not affect the production of IL-4. These results suggest that CV may be useful in improving the immune function.