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  • Title: [Vitamin D and the skin: new aspects and perspectives].
    Author: Milde P.
    Journal: Hautarzt; 1991 Nov; 42(11):671-6. PubMed ID: 1663092.
    Abstract:
    Vitamin D (calciferol) is under clinical investigation for the treatment of psoriasis. Vitamin D was previously solely regarded as a key substance in hormonal calcium homeostasis, a view that is no longer tenable. The human receptor for the biologically active metabolite 1,25-dihydroxyvitamin-D3 was cloned in 1988. Sequence analyses revealed that it was a member of the nuclear steroid hormone receptor family. This family of gene-regulatory DNA-binding proteins includes the oestrogen, progesterone, glucocorticoid, mineralocorticoid, thyroxine (T-3) and retinoic acid receptors. Vitamin D receptors have been identified in a variety of tissues primarily unrelated to calcium metabolism. The skin and the immune system are some of the most interesting new targets. In vitro 1,25-dihydroxyvitamin-D3 inhibits proliferation and induces differentiation of keratinocytes. Furthermore, this hormone has potent immunomodulatory functions.
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