Abstract
Objective : The purpose of this study was to investigate the synergistic effect of Angelicae gigantis Radix (AG) and Lycii fructus (LF) ethanol extracts on skin-whitening effects. Method : LFAG extracts were prepared by extracting with 80% ethanol. The efficacy of LFAG was judged by measurement of cell viability, tyrosinase activity, melanin production, tyrosinase and microphthalmia-associated transcription factor (MITF) expression in B16F10 murine melanoma cells by lipopolysaccharides (LPS) treatment. Results : Each extract (LF or AG) inhibited the tyrosinase activity in a dose-dependent manner. The co-treatment of LFAG extracts (<TEX>$25{\mu}g/mL$</TEX> LF plus <TEX>$25{\mu}g/mL$</TEX> AG) markedly suppressed the LPS-induced cellular tyrosine activity, melanin production, tyrosinase and MMP-1 expression in B16F10 murine melanoma cells. These suppressive effects were synergistically increased by their combination. Conclusions : With these observations, we suggest that the extracts from Lycii fructus and Angelica gigantis Radix could be potent natural materials for whitening skin.
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