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Anti-inflammatory Activity of Crinum asiaticum Linne var. Japonicum Extract and its Application as a Cosmeceutical Ingredient  

Kim, Ki-Ho (R&D Center, Bioland Ltd.)
Kim, Young-Heui (R&D Center, Bioland Ltd.)
Kim, Ki-Soo (R&D Center, Bioland Ltd.)
Park, Sun-Hee (R&D Center, Bioland Ltd.)
Lee, Soo-Hee (R&D Center, Bioland Ltd.)
Kim, Young-Jin (R&D Center, Charmzone)
Kim, Young-Sil (R&D Center, Charmzone)
Kim, Jong-Heon (R&D Center, Charmzone)
Publication Information
Journal of the Society of Cosmetic Scientists of Korea / v.32, no.1, 2006 , pp. 59-64 More about this Journal
Abstract
Crinum asiaticum Linne var. japonicum has long been used as a rheumatic remedy, an anti-pyretic, an anti-ulcer treatment, and for the alleviation of local pain and fever in Korea and Malaysia. In order to investigate the possibility of Crinum asiaticum Linne var. japonicum extract as a cosmetic ingredient, we measured its anti-inflammatory effect by inhibition of iNOS (inducible nitric oxide synthase), and the release of PGE2, IL-6, and IL-8. HPLC experiment after extraction with 95% ethanol at pH 3.5 showed that Crinum asiaticum Linne var. japonicum was mainly composed of lycorine (up to 1%), a well-known immunosuppressant. The content of lycorine varied depending on the type of tissue analyzed and the extraction method. In anti-inflammatory assay for inhibition of nitric oxide formation on lipopolysaccharide (LPS)- activated mouse macrophage RAW 264.7 cells, the ethanolic extract of Crinum asiaticum showed inhibitory activity of NO production in dose-dependent manner ($IC_{50} = 83.5 {\mu}g/mL$). Additional study by RT-PCR demonstrated that the extract of Crinum asiaticum significantly suppressed the expression of the iNOS gene. Moreover, the extract of Crinum asiaticum did not show my cytotoxicity, but did show cell proliferation effect against LPS ($10{\sim}60%$ increase of tell viability). In an assay to determine inhibition of the $H_2O_2$-activated release of PGE2, IL-6, and IL-8 in human normal fibroblast cell lines, the release of PGE2 and IL-6 was almost completely inhibited above concentrations of 0.05% and 1%, respectively. Moreover, the release of IL-8 was completely inhibited over the entire range of concentrations (> 0.0025%). The result showed that the extract of Crinum asiaticum Linne var. japonicum has sufficient anti-inflammatory effect. There-fore, Crinum asiaticum Linne var. japonicum extract may be useful as an ingredient of cosmetic products.
Keywords
Crinum asiaticum; anti-inflammatory effect; cosmeceuticals; iNOS;
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