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Sodium lauryl sulphate alters the mRNA expression of lipid-metabolizing enzymes and PPAR signalling in normal human skin in vivo
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.
2009 (English)In: Experimental dermatology, ISSN 0906-6705, E-ISSN 1600-0625, Vol. 18, no 12, 1010-1015 p.Article in journal (Refereed) Published
Abstract [en]

Detergents irritate skin and affect skin barrier homeostasis. In this study, healthy skin was exposed to 1% sodium lauryl sulphate (SLS) in water for 24 h. Biopsies were taken 6 h to 8 days post exposure. Lipid patterns were stained in situ and real-time polymerase chain reaction (PCR) was used to examine mRNA expression of enzymes synthesizing barrier lipids, peroxisome proliferator-activated receptors (PPAR) and lipoxygenases. The lipid pattern was disorganized from 6 h to 3 days after SLS exposure. Concomitant changes in mRNA expression included: (i) reduction, followed by induction, of ceramide-generating beta-glucocerebrosidase, (ii) increase on day 1 of two other enzymes for ceramide biosynthesis and (iii) persistent reduction of acetyl-CoA carboxylase-B, a key enzyme in fatty acid synthesis. Surprisingly, the rate-limiting enzyme in cholesterol synthesis, HMG-CoA reductase, was unaltered. Among putative regulators of barrier lipids synthesis, PPARalpha and PPARgamma exhibited reduced mRNA expression, while PPARbeta/delta and LXRbeta were unaltered. Epidermal lipoxygenase-3, which may generate PPARalpha agonists, exhibited reduced expression. In conclusion, SLS induces reorganization of lipids in the stratum corneum, which play a role in detergents' destruction of the barrier. The changes in mRNA expression of enzymes involved in synthesizing barrier lipids are probably important for the restoration of the barrier.

Place, publisher, year, edition, pages
2009. Vol. 18, no 12, 1010-1015 p.
Keyword [en]
Ceramide, Irritant, Lipid metabolism, PPAR, Skin barrier
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-102134DOI: 10.1111/j.1600-0625.2009.00877.xISI: 000271973700002PubMedID: 19366370OAI: oai:DiVA.org:uu-102134DiVA: diva2:214455
Available from: 2010-02-15 Created: 2009-05-05 Last updated: 2017-12-13Bibliographically approved

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Törmä, Hans

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