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  • Title: Topical steroid treatment reduces arachidonic acid and leukotriene B4 in lesional skin of psoriasis.
    Author: Wong E, Barr RM, Cunningham FM, Mistry K, Woollard PM, Mallet AI, Greaves MW.
    Journal: Br J Clin Pharmacol; 1986 Dec; 22(6):627-32. PubMed ID: 3032226.
    Abstract:
    Topical clobetasol propionate or vehicle ointment was applied daily for 3 days to psoriatic plaques on eight patients. Skin chamber exudates from untreated, steroid and vehicle treated lesions were assayed for arachidonic acid (AA), leukotriene B4 (LTB4), prostaglandin E2 (PGE2) and 12-hydroxy-5,8,10,14-eicosatetraenoic acid (12-HETE) before, and at 24 h and 72 h after treatment. Significant reductions in AA and LTB4 were observed at 72 h in steroid treated lesions. The reduction in 12-HETE levels observed after steroid treatment was not statistically significant. PGE2 levels in lesional psoriatic skin were unaltered. The reduction of AA, and LTB4 was associated with clinical improvement of psoriasis.
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