Laser Doppler measurements of skin vasodilation elicited by percutaneous electrical stimulation of nociceptors in humans

Walter Magerl, J. Szolcsányi, Rod A. Westerman, Hermann O. Handwerker

Research output: Contribution to journalArticle

76 Citations (Scopus)

Abstract

This study was designed to assess the quantitative features of the skin protecting mechanism of axon reflexes by monitoring stimulus related changes in skin blood flow using laser Doppler flowmetry. Skin vasodilatation induced by trains of brief transcutaneous electrical pulses (0.5 ms, 150 V) was strictly related in magnitude to the number of pulses (trains of 1-32). This vascular response was reduced by 95% when the skin had been pretreated by painting it for two days with a 1% alcoholic solution of capsaicin. The sensitivity of vascular responses to activation of afferent C-fibers indicates a role of this mechanism in the protection of the skin against noxious events.

Original languageEnglish
Pages (from-to)349-354
Number of pages6
JournalNeuroscience Letters
Volume82
Issue number3
DOIs
Publication statusPublished - Dec 4 1987

Fingerprint

Nociceptors
Vasodilation
Electric Stimulation
Lasers
Skin
Blood Vessels
Unmyelinated Nerve Fibers
Paintings
Laser-Doppler Flowmetry
Capsaicin
Axons
Reflex

Keywords

  • Axon reflex
  • Cutaneous nociceptor
  • Electrical stimulation
  • Human skin
  • Laser Doppler flowmetry
  • Neurogenic inflammation
  • Vasodilatation

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Laser Doppler measurements of skin vasodilation elicited by percutaneous electrical stimulation of nociceptors in humans. / Magerl, Walter; Szolcsányi, J.; Westerman, Rod A.; Handwerker, Hermann O.

In: Neuroscience Letters, Vol. 82, No. 3, 04.12.1987, p. 349-354.

Research output: Contribution to journalArticle

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