title: Trioxsalen bath plus UVA treatment of psoriasis. Plasma concentration of the drug and clinical results.
abstract: Forty-five patients with psoriasis were treated with trioxsalen bath plus UVA. Good or excellent results were obtained in 34 (67%) of the 51 treatments. Trioxsalen plasma concentrations were determined at different stages of the treatment in 10 patients 1 hour after trioxsalen bath, and in 11 patients undergoing treatment for vitiligo 2 hours after ingestion of 0.6 mg trioxsalen per kilogram body weight. The determinations were performed using the glass capillary, gas chromatography, mass spectrometry method, reaching a sensitivity of greater than or equal to 25 pg/ml. The trioxsalen plasma concentrations varied between 12.5 and 0.27 ng/ml after oral ingestion and between approximately 9 ng/ml and less than 25 pg/ml after bath application.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001494:Baths; D005260:Female; D011564:Furocoumarins / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011701:PUVA Therapy; D010778:Photochemotherapy; D011565:Psoriasis / Q000188:drug therapy*; D014307:Trioxsalen / Q000097:blood / Q000627:therapeutic use*
chemical_list: D011564:Furocoumarins; D014307:Trioxsalen