PMID: 7537779May 1, 1995Paper

Axon-reflex-mediated vasodilatation in the psoriatic plaque?

The Journal of Investigative Dermatology
A L KrogstadB G Wallin

Abstract

Blood flow in the psoriatic plaque is increased, but the underlying mechanisms are not known. The aim of the present study was to examine whether neurogenic factors are important for blood flow regulation in the plaque. Local neurogenic mechanisms were inhibited by surface anesthesia and central nervous control by conduction anesthesia of nerves to the psoriatic plaque. The differences in skin perfusion before and after anesthesia were measured with a laser Doppler perfusion imager. The skin perfusion in psoriatic plaques located in hairy skin was unaffected by conduction anesthesia, but surface anesthesia of the plaque evoked a marked blood flow reduction. The perfusion in ultraviolet-B-irradiated skin, used as a control for nonspecific phenomena, was reduced after local application of indomethacin but was unaffected or increased after surface anesthesia. The results are compatible with the idea that a local neurogenic mechanism (axon-reflex) contributes to the high blood flow in the psoriatic plaque.

Citations

Oct 10, 1998·The British Journal of Dermatology·A L KrogstadB G Wallin
Dec 17, 2003·International Journal of Gynecological Cancer : Official Journal of the International Gynecological Cancer Society·J SaravanamuthuA B Maclean
Jun 14, 2005·The British Journal of Dermatology·A K MurrayC E M Griffiths
Jun 10, 2014·Physiological Measurement·John Allen, Kevin Howell
Sep 27, 2003·The British Journal of Dermatology·G YosipovitchC L Goh
Jul 27, 1999·The British Journal of Dermatology·A L KrogstadB G Wallin
Apr 19, 2003·Journal of the European Academy of Dermatology and Venereology : JEADV·O AvciM Caliskan
Jan 12, 2002·Journal of Theoretical Biology·Nicholas J SavillJonathan A Sherratt

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