title: Anti-ultraviolet radiation effects of Coptis chinensis and Phellodendron amurense glycans by immunomodulating and inhibiting oxidative injury.
abstract: HPLC analysis proved that Coptis chinensis glycan contained Ara, Man, and Gal. The monosaccharide constituents of Phellodendron amurense glycan were determined by HPLC analysis. HPLC analysis proved that P. amurense glycan contained Ara, Xyl, Glu, and Gal. FT-IR spectrum of C. chinensis glycan and P. amurense glycan showed the characteristic absorption peaks of carbohydrate polymers. Exposure of the human skin to ultraviolet radiation (UVR) leads to depletion of cutaneous antioxidants, regulation of gene expression and ultimately to the development of skin diseases. In the present study, free radical scavenging activity of C. chinensis and P. amurense glycan were evaluated. The photoprotective effect of C. chinensis and P. amurense glycan against UV-induced oxidative damage was also investigated in skin. At the concentration range employed, the two glycans showed strong free radical scavenging activity. Ultraviolet radiation reduced skin antioxidant enzyme and immunity activities in animals. Administration of C. chinensis and P. amurense glycans dose-dependently significantly increased skin antioxidant enzyme and immunity activities in animals. In conclusion, C. chinensis and P. amurense glycans present photoprotective properties, which can be attributed to molecules, such as flavonoids and carotenoids, which act as UV-absorbing molecules and as antioxidants, as well as stimulate immunity activities in animals.
authors.affiliation: Department of Pharmacy, General Hospital of Beijing Military Region, East District, Beijing, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Yan
authors.forename: Xiaodi
authors.initials: X
authors.lastname: Sun
authors.forename: Shiguang
authors.initials: S
authors.lastname: Sun
authors.forename: Suhui
authors.initials: S
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Rui
authors.initials: R
authors.lastname: Wang
authors.forename: Ping
authors.initials: P
authors.lastname: An
authors.forename: Feng
authors.initials: F
authors.lastname: Yang
authors.forename: Wei
authors.initials: W
authors.lastname: Kang
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000494:pharmacology*; D039323:Coptis / Q000737:chemistry*; D016207:Cytokines / Q000097:blood / Q000276:immunology; D005609:Free Radicals / Q000378:metabolism; D006801:Humans; D007155:Immunologic Factors / Q000494:pharmacology*; D032102:Phellodendron / Q000737:chemistry*; D010936:Plant Extracts / Q000494:pharmacology*; D011134:Polysaccharides / Q000494:pharmacology*; D051381:Rats; D017207:Rats, Sprague-Dawley; D012867:Skin / Q000187:drug effects / Q000276:immunology / Q000378:metabolism / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D000975:Antioxidants; D016207:Cytokines; D005609:Free Radicals; D007155:Immunologic Factors; D010936:Plant Extracts; D011134:Polysaccharides