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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2007.1
- 수록면
- 17 - 24 (8page)
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초록· 키워드
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Objectives : Licorice has been commonly used as a detoxification agent. We previously reported that licorice and its component, liquiritigenin, exhibits cytoprotective activity against Pb-induced toxicity. The present study was conducted to evaluate the effect of liquiritigenin on the lead-induced cytotoxicity in PC-12 cells. Methods : PC-12 cells were pre-treated with liquiritigenin, and further incubated with lead 100 ${\mu}M$ for $12^{\sim}48$ hours. The viability of PC-12 cells was measured by MTT assay, and the levels of proteins were analysed by western blot. Results : Severe cytotoxicity was induced and nitric oxide (NO) production was augmented by the exposure of lead. Liquiritigenin protected cells from lead-induced cytoxicity and reduced NO production in a dose-dependent manner. The inhibition of NO production was due to the suppression of iNOS protein via the inhibition of $NF-{\kappa}B$ nuclear translocation, determined by western blot analysis. Conclusions : These results suggest that liquiritigenin may exert cytoprotective effect against lead toxicity by inhibiting NO production.
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