The skin as a mirror of the soul: Exploring the possible roles of serotonin

Klas Nordlind, Efrain Azmitia, Andrzej Slominski

Research output: Contribution to journalArticle

Abstract

Serotonin (5-hydroxytryptamine; 5-HT) is an important mediator of bidirectional interactions between the neuroendocrine system and the skin. The rate of synthesis of 5-HT from l-tryptophan can be enhanced by brain-derived neuronal growth factor, cytokines, exposure to ultraviolet light and steroids. The major source of 5-HT in the skin are platelets, which, upon aggregation, release this biogenic amine. Moreover, the epidermal and dermal skin express the enzymes required for the transformation of tryptophan to 5-HT, and certain skin cells, such as melanocytes, have been demonstrated to produce 5-HT. In addition, rodent mast cells produce 5-HT, but human mast cells have not yet been fully examined in this respect. Skin cells express functionally active, membrane-bound receptors for 5-HT, as well as proteins that transport 5-HT. The interactions of 5-HT with these various proteins determines the nature, magnitude and duration of serotonergic responses. The immune and vasculature systems in the skin are traditional targets for bioregulation by 5-HT. Moreover, recent findings indicate that keratinocytes, melanocytes and dermal fibroblasts also respond to this amine in various ways. Thus, mammalian skin is both a site for the production of and a target for bioregulation by 5-HT. This indicates that agonists and antagonists directed towards specific 5-HT receptors could be useful in connection with treatment of skin diseases. Based on our increasing knowledge concerning these receptors and their plasticity, future research will focus on the development of serotonergic drugs that exert metabotrophic effects on the cells of the skin without affecting the central nervous system.

Original languageEnglish (US)
Pages (from-to)301-311
Number of pages11
JournalExperimental Dermatology
Volume17
Issue number4
DOIs
StatePublished - Apr 2008

Fingerprint

Serotonin
Skin
Mirrors
Serotonin Receptors
Melanocytes
Mast Cells
Tryptophan
Serotonin Agents
Neurosecretory Systems
Biogenic Amines
Neurology
Protein Transport
Fibroblasts
Ultraviolet Rays
Platelets
Keratinocytes
Skin Diseases
Amines
Plasticity
Immune System

Keywords

  • 5-HT
  • 5-HT receptors
  • 5-HT transporters
  • Skin

ASJC Scopus subject areas

  • Dermatology

Cite this

The skin as a mirror of the soul : Exploring the possible roles of serotonin. / Nordlind, Klas; Azmitia, Efrain; Slominski, Andrzej.

In: Experimental Dermatology, Vol. 17, No. 4, 04.2008, p. 301-311.

Research output: Contribution to journalArticle

Nordlind, Klas ; Azmitia, Efrain ; Slominski, Andrzej. / The skin as a mirror of the soul : Exploring the possible roles of serotonin. In: Experimental Dermatology. 2008 ; Vol. 17, No. 4. pp. 301-311.
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