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  • Title: Interleukin-6 in the epidermis of patients with psoriasis before and during PUVA treatment.
    Author: Oxholm A, Oxholm P, Staberg B, Bendtzen K.
    Journal: Acta Derm Venereol; 1989; 69(3):195-9. PubMed ID: 2566221.
    Abstract:
    Biopsies from lesional and unaffected skin of 6 patients with psoriasis, taken before and during treatment with psoralen plus UVA (PUVA) were examined immunohistologically, using partially purified polyclonal antibodies to crude supernatants of activated human blood monocytes. By absorption with recombinant derived human monokines, we were able to demonstrate that interleukin-6 (IL-6) (but not IL-1 alpha or IL-1 beta) was located in a laminar and granular pattern in stratum corneum, and on epidermal cell membranes in the viable cellular epidermis. Before PUVA treatment, the intensity and the extension of staining for IL-6 were both markedly increased in lesional skin compared with uninvolved skin. A weaker staining for IL-6 was observed in lesional skin, simultaneous with the clinical improvement of psoriasis. The staining patterns for IL-6 in biopsies from cleared lesional skin and uninvolved psoriatic skin were identical at the conclusion of therapy.
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