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The distribution of choline acetyltransferase- and acetylcholinesterase-like immunoreactivity in the palmar skin of patients with palmoplantar pustulosis
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. (Dermatology and Venereology)
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences. (Dermatology and Venereology)
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2000 (English)In: British Journal of Dermatology, ISSN 0007-0963, E-ISSN 1365-2133, Vol. 142, no 2, 234-242 p.Article in journal (Refereed) Published
Abstract [en]

The distribution of choline acetyltransferase (ChAT) and acetylcholinesterase (AChE) in involved skin in patients with palmoplantar pustulosis (PPP) and in normal palmar skin in healthy non-smokers and smokers has been studied by immunohistochemistry, especially in relation to the sweat gland apparatus. The sweat gland and its duct showed ChAT- and AChE-like immunoreactivity (LI) of varying intensity in all three groups and with stronger reactivity than in the epidermis. ChAT-LI was present in the coil and in the duct except in the corneal layer. Smokers and patients with PPP displayed significantly fewer ChAT+ acrosyringia than non-smokers. In the patients with PPP, the granulocytes in the pustules and in the papillary dermis displayed ChAT-LI. Western blot analysis of granulocytes from peripheral blood from healthy donors confirmed the presence of ChAT-like proteins in large amounts in neutrophils and small amounts in eosinophils. AChE-LI of varying intensity was found in all parts of the sweat gland apparatus in all three groups. The strongest AChE-LI in the acrosyringia was seen in the lowest part of the stratum corneum, where the PPP pustules are located. No significant differences in staining pattern or intensity were found between the coils, nerve fibres surrounding the coils or ducts. The number of mast cells in the papillary dermis was about four times larger in the patients with PPP than in the control subjects. AChE-LI was observed in about 25% of the mast cells in non-smoking control subjects and in patients with PPP, but only in 10% of those in the smoking control subjects. Our findings indicate that the (non-neuronal) cholinergic system may be involved in cutaneous inflammatory processes.

Place, publisher, year, edition, pages
2000. Vol. 142, no 2, 234-242 p.
Keyword [en]
acetylcholinesterase, choline acetyltransferase, granulocytes, mast cells, palmoplantar pustulosis, sweat gland apparatus
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-54367DOI: 10.1046/j.1365-2133.2000.03290.xPubMedID: 10730754OAI: oai:DiVA.org:uu-54367DiVA: diva2:82276
Available from: 2008-10-17 Created: 2008-10-17 Last updated: 2017-12-04Bibliographically approved

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