Anti-inflammatory activity of Crinum asiaticum Linne var. japonicum extract and its application as a cosmeceutical ingredient.
Crinum asiaticum Linne var. japonicum has long been used as a rheumatic remedy, as an anti-pyretic and as 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 its inhibition of iNOS (inducible nitric oxide synthase) and the release of PGE2, IL-6, and IL-8. We also measured its anti-allergic effect by its inhibition of beta-hexosamidase release. An HPLC experiment after extraction with 95% EtOH at pH 3.5 showed that Crinum asiaticum Linne var. japonicum was mainly composed of lycorine (up to 1%), a well-known immunosuppressor. The content of lycorine varied, depending on the type of plant tissue analyzed and the extraction method. In an anti-inflammatory assay for inhibition of nitric oxide formation on lipopolysaccharide (LPS)-activated mouse macrophage RAW 264.7 cells, the ethanol extract of Crinum asiaticum showed an inhibitory activity of NO production in a dose-dependent manner (IC50 = 58.5 microg/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 any cytotoxicity, but did show a cell proliferation effect against LPS (a 10 approximately 60% increase in cell viability). In an assay to determine inhibition of the H2O2-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 concentration (>0.0025%). In order to investigate the skin-sensitizing potentials of the extract of Crinum asiaticum, a human clinical test was performed after repeated epicutaneous 48-h applications under an occlusive patch (RIPT). The repeated and single cutaneous applications of Crinum asiaticum Linne var. japonicum extract under the occlusive patch did not provoke any cumulative irritation and sensitization reactions. The result showed that the extract of Crinum asiaticum Linne var. japonicum has a sufficient anti-inflammatory effect. Therefore, Crinum asiaticum Linne var. japonicum extract may be useful for development as an ingredient in cosmetic products.
Kim
Young Heui
YH
R&D Center, Bioland Ltd., Songjeong, Byongchon, Cheonan-si, Chungnam, 330-863.
Kim
Ki Ho
KH
Han
Chang Sung
CS
Park
Sun Hee
SH
Yang
Hong Chul
HC
Lee
Bang Yong
BY
Eom
Sang-Yong
SY
Kim
Young-Sil
YS
Kim
Jong-Heon
JH
Lee
Nam Ho
NH
D000328:Adult; D047151:Amaryllidaceae Alkaloids / Q000032:analysis / Q000494:pharmacology; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000009:adverse effects / Q000494:pharmacology*; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D003358:Cosmetics / Q000009:adverse effects / Q000494:pharmacology*; D031407:Crinum / Q000737:chemistry*; D016207:Cytokines / Q000378:metabolism; D005260:Female; D005347:Fibroblasts / Q000187:drug effects; D006801:Humans; D008070:Lipopolysaccharides / Q000494:pharmacology; D008264:Macrophages / Q000187:drug effects; D008297:Male; D051379:Mice; D008875:Middle Aged; D052247:Nitric Oxide Synthase Type II / Q000037:antagonists & inhibitors / Q000096:biosynthesis / Q000235:genetics; D010328:Patch Tests; D010617:Phenanthridines / Q000032:analysis / Q000494:pharmacology; D010936:Plant Extracts / Q000009:adverse effects / Q000494:pharmacology*; D018517:Plant Roots / Q000737:chemistry; D012333:RNA, Messenger / Q000096:biosynthesis / Q000235:genetics; D055815:Young Adult; D001619:beta-N-Acetylhexosaminidases / Q000037:antagonists & inhibitors
D047151:Amaryllidaceae Alkaloids; D000893:Anti-Inflammatory Agents; D003358:Cosmetics; D016207:Cytokines; D008070:Lipopolysaccharides; D010617:Phenanthridines; D010936:Plant Extracts; D012333:RNA, Messenger; D052247:Nitric Oxide Synthase Type II; D001619:beta-N-Acetylhexosaminidases; C015330:lycorine