• The Korean Journal of Food And Nutrition
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• v.15 no.1
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• pp.36-41
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• 2002

The aim of this study was to assess the antitoxic compounds, flavanones(Leachianone A=LA and Sophoraflavanone G=SFG), from Sophora flavescens(S. flavescens). We investigated the possibility of antitoxicity of LA and SFG against NIH 3T3 fibroblasts cell lines using calorimetric MTT[3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl -2H-tetra-azolium bromide] assay. The results were as follows : After cadmium was treated against NIH 3T3 cell lines, we determined IC$\_$50/. Accordingly we have examined the detoxification effects of S. flavescens, LA and SFG under cadmium IC$\_$50/=12.5$\mu$M and was carried out to observe morphological changes by the light microscopic study In NIH 3T3 cells, Sophora flavescens, LA, SFG and LA + SFG showed inhibitory effects on the cytotoxicity of cadmium and these detoxication effects increased in proportion to the concentration of these drugs. These results suggest that LA and SFG from S. flavescens retain a potential antitoxic activity.

• Proceedings of the PSK Conference
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• 2003.10b
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• pp.151.2-151.2
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• 2003

For the purpose of the development of a skin-whitening agent, Sophora flavescens was evaluated for tyrosinase inhibitory activity and its active principles were identified followed activity-guided isolation. The ethanol extract and dichloromethane fraction from S. flavescens showed significant inhibition of mushroom tyrosinase. From the dichloromethane fraction, three known prenylated flavonoids, sophoraflavanone G, kuraridin, and kurarinone, were isolated. Compared with kojic acid ($IC_50$=20.5 $\mu$M), these compounds possessed more potent tyrosinase inhibitory activity. (omitted)

• Journal of Physiology & Pathology in Korean Medicine
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• v.23 no.1
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• pp.206-213
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• 2009

Sophora flavescens, as a traditional herbal medicine, has been used to treat with a variety of disesases, In previous reports, S. flavescens and sophoraflavanone G (a prenylated flavonoid from S. flavescens) inhibited cytokines productions in LPS-induced Raw 264.7 macrophages cells and BV2 microglial cells. We examined on the anti-allergic effect of S. flavescens on the PMA plus A23187-induced rat leukemia (RBL-2H3) cells. S. flavescens inhibited the release of $\beta$-hexosaminidase and productions and expressions of tumor necrosis factor (TNF)-$\alpha$, interleukin (IL)-4 and cyclooxygenase (COX)-2 in a dose-dependent manner on stimulated RBL-2H3 cells, however, S. flavescens not affect cell viability. The protein expression level of nuclear factor (NF)-${\kappa}B$ (p65) was decreased in the nucleus and suppressed the degradation of inhibitory protein $I{\kappa}B-{\alpha}$ protein, the activation of extracellular signal-regulated kinases (ERK) mitogen-activated protein kinase (MAPK) by S. flavescens. These results suggest that S. flavescens could be involved anti-allergic effect by control of $NF-{\kappa}B$ (p65) translocation into the nucleus through inhibition of $I{\kappa}B-{\alpha}$ degradation and suppression of pro-inflammatory cytokines expression.