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Vitamins as hormones.

J Reichrath1, B Lehmann, C Carlberg

  • 1Department of Dermatology, The Saarland University Hospital, Homburg, Germany.

Hormone and Metabolic Research = Hormon- Und Stoffwechselforschung = Hormones Et Metabolisme
|February 28, 2007
PubMed
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Vitamins A and D function as skin hormones, regulating cell growth, differentiation, and immune responses. Their metabolites are crucial for skin health and treating various conditions like acne and psoriasis.

Area of Science:

  • Dermatology and Endocrinology
  • Molecular Biology
  • Cell Biology

Background:

  • Vitamins A and D exhibit hormone-like properties in the skin, involving metabolism, activation, and biological activity.
  • Vitamin A metabolites (retinoids) are essential for epithelial tissue maintenance, reproduction, and possess intracrine activity via nuclear receptors.
  • The skin is a key site for vitamin D synthesis and a target organ for its active form, 1,25-dihydroxyvitamin D (3).

Purpose of the Study:

  • To review the established knowledge on vitamins A and D as major vitamin-hormones in the skin.
  • To elucidate the mechanisms of action and therapeutic applications of vitamin A and D metabolites in dermatological conditions.
  • To highlight the role of these vitamins in skin homeostasis, immune modulation, and disease prevention.

Main Methods:

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  • Literature review of existing scientific knowledge on vitamins A and D in skin biology.
  • Analysis of studies on the metabolic pathways, mechanisms of action, and therapeutic uses of retinoids and vitamin D analogues.
  • Synthesis of information regarding the role of these vitamins in cell proliferation, differentiation, immune response, and disease treatment.

Main Results:

  • Vitamin A metabolites influence skin morphogenesis, cell proliferation, differentiation, immune response, angiogenesis, and carcinogenesis.
  • Vitamin D metabolites regulate keratinocyte growth and differentiation, impacting conditions like psoriasis.
  • Both vitamin A and D analogues have approved therapeutic applications for various skin diseases, including acne, photoaging, psoriasis, and certain cancers.

Conclusions:

  • Vitamins A and D are critical vitamin-hormones for skin health, regulating numerous physiological processes.
  • Their metabolites offer significant therapeutic potential for a range of dermatological and systemic diseases.
  • Ongoing research into vitamin D analogues promises new applications in cancer prevention and treatment of inflammatory and infectious skin diseases.