title: Urinary excretion of 5-S-cysteinyldopa in healthy Japanese.
abstract: Urinary excretion of 5-S-cysteinyldopa was investigated in 20 healthy Japanese (10 men and 10 women). The values of excretion varied between 46 and 193 microgram/24 h. The mean (+/- S.D.) was 96 1 +/- 9.8 microgram/24 h. It was higher in the men than in the women, being 13 +/- 15 vis-a-vis 80.8 +/- 11.4 microgram/24 h. This finding indicates that 5-S-cysteinyldopa is formed and excreted by active melanocytes even in Mongoloids. The excretion of dopa and dopamine was found not correlative with the excretion of 5-S-cysteinyldopa.
mesh_terms: D000293:Adolescent; D000328:Adult; D044466:Asian People; D002648:Child; D003548:Cysteinyldopa / Q000652:urine*; D004295:Dihydroxyphenylalanine / Q000031:analogs & derivatives* / Q000652:urine; D004298:Dopamine / Q000652:urine; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged
chemical_list: D003548:Cysteinyldopa; D004295:Dihydroxyphenylalanine; D004298:Dopamine