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Anti-inflammatory and Anti-oxidative Effects of Korean Red Ginseng Extract in Human Keratinocytes

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Background: In this study, we have investigated the effect of Korean red ginseng (KRG) extracts on the production of TNF-α and IL-8 in human keratinocytes. Also, to examine the antioxidative effect of red ginseng extracts, free radical scavenging activity and superoxide dismutase (SOD) activity in human dermal fibroblasts was measured. Methods: To investigate the effect of KRG in atopic dermatitis, we measured the level of TNF-α and IL-8 secretion in LPS-stimulated human keratinocytes after the treatment of KRG extracts using enzyme-linked immunosorbent assay. Anti-oxidative activity was investigated by measuring 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and SOD activity. Results:The stimulation of human keratinocytes with KRG extracts shifted the LPS-induced cytokine secretion toward a more immunosuppressive response. KRG dose-dependently decreased TNF-α and IL-8 production in HaCaT cells and a significant inhibition of TNF-α was shown when cells were treated with 500 and 1,000μg/ml of KRG extracts. Additionally,KRG extracts showed DPPH radical scavenging and SOD activity in a dose-dependent manner. Particularly, SOD activities of concentrations higher than 60μg/ml of KRG extracts were significantly different in human dermal fibroblast cells. Conclusion: Based on this study, KRG extracts may be a useful immunosuppressive agent in the treatment of atopic dermatitis.

Abstract

Background: In this study, we have investigated the effect of Korean red ginseng (KRG) extracts on the production of TNF-α and IL-8 in human keratinocytes. Also, to examine the antioxidative effect of red ginseng extracts, free radical scavenging activity and superoxide dismutase (SOD) activity in human dermal fibroblasts was measured. Methods: To investigate the effect of KRG in atopic dermatitis, we measured the level of TNF-α and IL-8 secretion in LPS-stimulated human keratinocytes after the treatment of KRG extracts using enzyme-linked immunosorbent assay. Anti-oxidative activity was investigated by measuring 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and SOD activity. Results:The stimulation of human keratinocytes with KRG extracts shifted the LPS-induced cytokine secretion toward a more immunosuppressive response. KRG dose-dependently decreased TNF-α and IL-8 production in HaCaT cells and a significant inhibition of TNF-α was shown when cells were treated with 500 and 1,000μg/ml of KRG extracts. Additionally,KRG extracts showed DPPH radical scavenging and SOD activity in a dose-dependent manner. Particularly, SOD activities of concentrations higher than 60μg/ml of KRG extracts were significantly different in human dermal fibroblast cells. Conclusion: Based on this study, KRG extracts may be a useful immunosuppressive agent in the treatment of atopic dermatitis.

참고문헌 (47)

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