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Vasoactive peptides in the skin

J Wallengren1

  • 1Department of Dermatology, Lund University, University Hospital, Sweden.

The Journal of Investigative Dermatology. Symposium Proceedings
|August 1, 1997
PubMed
Summary
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Neuropeptides like substance P and CGRP are key vasodilators in skin, influencing blood flow and neurogenic inflammation. Their effects vary by organ, highlighting skin

Area of Science:

  • Vascular Biology
  • Neuroendocrinology
  • Dermatology

Background:

  • Vasoregulation is intricately linked to nerve signaling, with peptidergic transmitters co-existing with traditional neurotransmitters.
  • Neuropeptides play significant roles in nonadrenergic-noncholinergic (NANC) responses within the vascular system.
  • The skin serves as a model for studying endogenous vasoactive substances due to its accessibility.

Purpose of the Study:

  • To review recent findings on the vasoregulatory effects of various neuropeptides in the skin.
  • To explore the involvement of neuropeptides and other molecules in neurogenic inflammation.
  • To compare the organ-specific actions of vasoactive peptides, such as neuropeptide Y.

Main Methods:

  • Literature review of recent scientific information on neuropeptides and vasoregulation.

Related Experiment Videos

  • Analysis of studies investigating the roles of substance P, CGRP, VIP, NPY, and others.
  • Examination of the origins and functions of vasoactive molecules from both neural and cellular sources.

    • Main Results:

    • Substance P (SP), CGRP, VIP, and PACAP are identified as potent vasodilators.
    • Some neuropeptides, alongside molecules like nitric oxide (NO) and histamine, are crucial for vasoregulation and neurogenic inflammation.
    • Neuropeptide Y (NPY) exhibits tissue-specific effects, acting as a vasodilator in the skin but a vasoconstrictor in the heart and brain.

    Conclusions:

    • Neuropeptides are critical mediators of vasoregulation and neurogenic inflammation, with diverse effects across different tissues.
    • The skin's unique environment, influenced by mast cells and inflammatory cells, modulates neuropeptide actions.
    • Understanding these vasoactive substances is essential for comprehending vascular control and inflammatory processes in various organs.