title: The percutaneous absorption and excretion of promestriene (3-propoxy-17 beta-methoxy-1,3,5(10)-estratriene) in rats and humans.
abstract: The percutaneous absorption of 3H-promestriene (an antiseborrhoeic agent; 3-propoxy-17 beta-methoxy-1,3,5(10)-estratriene) was studied in rats and human subjects. Extensive and continual absorption of the tritium label (about 50% dose in 3 days) occurred in rats when the treated area of skin (ca. 30 micrograms/cm2) was occluded; when unabsorbed material was washed off after 6 h, a substantial proportion of the applied 3H (about 25% dose) had been absorbed to be excreted later. In contrast, less than 1% of the 3H applied to the skin of human volunteers (0.1-0.5 mg/cm2) was absorbed within 6 h and subsequently excreted. In rats, tissue concentrations of 3H were greatest in the liver, adrenals and ovaries.
mesh_terms: D000042:Absorption; D000328:Adult; D000818:Animals; D004958:Estradiol / Q000031:analogs & derivatives* / Q000378:metabolism / Q000652:urine; D045166:Estradiol Congeners / Q000378:metabolism*; D006801:Humans; D008099:Liver / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D051381:Rats; D011919:Rats, Inbred Strains; D012867:Skin / Q000378:metabolism*; D013045:Species Specificity; D014018:Tissue Distribution; D014316:Tritium
chemical_list: D045166:Estradiol Congeners; D014316:Tritium; D004958:Estradiol; C013657:promestriene