Effects of polypeptide from Chlamys farreri on amino acid con-tent in guinea pig skin irradiated by chronic ultraviolet A and B     

于国英  曹鹏利  郭昆  王跃军  孙谧  王春波 《中国海洋湖沼学报》2004,22(4)

1 INTRODUCTION Long-term exposure of the skin to ultraviolet (UV) radiation results in degenerative processes involved in photoaging and photocarcinogenesis (Differy, 1987). As UVC is absorbed entirely by the stratospheric ozone layer and does not reach the earth抯 surface, sunlight is composed of UVA (320 nm 400 nm) and UVB (290 nm 320 nm). Human skin is exposed constantly to both UVA and UVB radiation, it is, therefore, important to protect the skin against UVA and UVB-induce…  相似文献   

Protective Effect of Topically Applied Polypeptide from Chlamys farreri Against Ultraviolet Radiation-Induced Chronic Skin Damage in Guinea Pig   总被引：2，自引：0，他引：2  

迟明亮  曹鹏利  于国英  朱莉  王跃军  王春波 《中国海洋湖沼学报》2003,21(4):319-323

INTRODUCTIONSolarultraviolet(UV)radiationisknowntobeamajoretiologicalriskofphotoaging.AsUVC(2 0 0nm -2 90nm)isabsorbedentirelybythestratosphericozonelayer,sunlightontheearthsur faceiscomposedofUVA (3 2 0nm -4 0 0nm)andUVB (2 90nm -3 2 0nm)only.UVAradiationenergyaccountsformorethan 90 %ofsolarUV ;andpenetratesthebasallayerofepidermismoreefficientlythanUVB (Brulsetal.,1984) .However,atsimilardosages,UVBismuchmoremuta genicthanUVA (Drobetskyetal.,1995) .Furthermore ,humanskinisexp…  相似文献