title: Phototoxicity and mutagenicity of 4,5'-dimethylangelicin and long-wave ultraviolet irradiation in Chinese hamster cells and human skin fibroblasts.
abstract: The phototoxicity and mutagenicity of 4,5'-dimethylangelicin (Ang) were assessed in cultures of hamster cells and human skin fibroblasts after long-wave ultraviolet irradiation. To obtain an impression of the clinical usefulness of Ang, we compared the phototoxicity and mutagenicity of this compound with those of 8-methoxypsoralen (8-MOP). To reach the same cell-killing rate in hamster cells and human skin fibroblasts, the concentration of Ang had to be 15 times higher than that of 8-MOP at comparable doses of radiation. Whether we used the same concentrations and an adjusted radiation dose or adjusted concentrations of Ang and 8-MOP at a constant radiation dose, the mutation induction in hamster cells and human skin fibroblasts was much higher after incubation with Ang than with 8-MOP.
mesh_terms: D000818:Animals; D002460:Cell Line; D002470:Cell Survival / Q000187:drug effects / Q000528:radiation effects; D002648:Child; D006224:Cricetinae; D003412:Cricetulus; D004307:Dose-Response Relationship, Radiation; D005347:Fibroblasts / Q000187:drug effects / Q000528:radiation effects; D011564:Furocoumarins / Q000633:toxicity*; D006801:Humans; D008168:Lung; D008297:Male; D008730:Methoxsalen / Q000633:toxicity; D009152:Mutagenicity Tests; D009153:Mutagens; D009154:Mutation; D012867:Skin / Q000187:drug effects* / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D011564:Furocoumarins; D009153:Mutagens; C021665:4,5'-dimethylangelicin; D008730:Methoxsalen