title: 5-S-cysteinyldopa and pigment response to UVA light.
abstract: 5-S-Cysteinyldopa concentrations in serum were studied in healthy individuals exposed to daily high-intensity UVA radiation. A marked increase in 5-S-cysteinyldopa was found after 3 days, and in some individuals concentrations were still higher after 7 to 10 days. The immediate pigment darkening (IPD) and delayed tanning (DT) were weak or absent at pressure sites, i.e. in skin with a low concentration of oxygen.
mesh_terms: D000328:Adult; D003548:Cysteinyldopa / Q000097:blood*; D004295:Dihydroxyphenylalanine / Q000031:analogs & derivatives*; D005260:Female; D006801:Humans; D008297:Male; D010100:Oxygen / Q000032:analysis; D011312:Pressure; D012867:Skin / Q000032:analysis; D012880:Skin Pigmentation / Q000528:radiation effects*; D013997:Time Factors; D014466:Ultraviolet Rays
chemical_list: D003548:Cysteinyldopa; D004295:Dihydroxyphenylalanine; D010100:Oxygen