Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/48625
Campo DC Valoridioma
dc.contributor.authorHeier, I.en_US
dc.contributor.authorSøyland, E.en_US
dc.contributor.authorKrogstad, A. L.en_US
dc.contributor.authorRodríguez-Gallego, C.en_US
dc.contributor.authorNenseter, M. S.en_US
dc.contributor.authorJahnsen, F. L.en_US
dc.date.accessioned2018-11-23T23:30:24Z-
dc.date.available2018-11-23T23:30:24Z-
dc.date.issued2011en_US
dc.identifier.issn0007-0963en_US
dc.identifier.urihttp://hdl.handle.net/10553/48625-
dc.description.abstractBackground: Interferon (IFN)-α-producing plasmacytoid dendritic cells (pDCs), inflammatory CD11c+CD1c- myeloid dendritic cells (mDCs) and macrophages have been found to contribute to the pathogenesis of psoriasis. Heliotherapy is a well-established treatment modality of this disease, although the details of how the effects are mediated are unknown. Objectives: To test the hypothesis that exposure to natural sun affects pathogenic DC subsets in lesional skin. Methods: Skin biopsies were obtained from lesional and nonlesional skin in 10 patients with moderate to severe psoriasis subjected to controlled sun exposure on Gran Canaria. Biopsies were obtained at baseline, day 2 and day 16 and examined by immunohistochemistry. Results: Sixteen days of heliotherapy had excellent clinical effect on patients with psoriasis, with significant reductions in Psoriasis Area and Severity Index (PASI) scores. In lesional skin pDC numbers and expression of MxA, a surrogate marker for IFN-α, were rapidly reduced. Inflammatory CD11c+CD1c- mDCs were significantly reduced whereas resident dermal CD11c+CD1c+ mDCs were unaffected. Expression levels of the maturation marker DC-LAMP (CD208) on mDCs were significantly reduced after sun exposure, as were the numbers of lesional dermal macrophages. A decrease of dermal DC subsets and macrophages was already observed after 1 day of sun exposure. An additional finding was that DC-SIGN (CD209) is primarily expressed on CD163+ macrophages and not DCs. Conclusions: The clinical improvement in psoriasis following sun exposure is associated with rapid changes in dermal DC populations and macrophages in lesional skin, preceding the clinical effect. These findings support the concept that these DC subsets are involved in the pathogenesis of psoriasis and suggest that sun-induced clinical benefit may partly be explained by its effect on dermal DCs.en_US
dc.languageengen_US
dc.relation.ispartofBritish journal of dermatology (1951. Print)en_US
dc.sourceBritish Journal of Dermatology[ISSN 0007-0963],v. 165, p. 792-801 (Octubre 2011)en_US
dc.subject32 Ciencias médicasen_US
dc.subject320106 Dermatologíaen_US
dc.subject.otherAntigensen_US
dc.subject.otherDendritic cellsen_US
dc.subject.otherLangerhans cellsen_US
dc.subject.otherPsoriasisen_US
dc.titleSun exposure rapidly reduces plasmacytoid dendritic cells and inflammatory dermal dendritic cells in psoriatic skinen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1111/j.1365-2133.2011.10430.xen_US
dc.identifier.scopus80053542363-
dc.contributor.authorscopusid24068456400-
dc.contributor.authorscopusid7003664609-
dc.contributor.authorscopusid6603713056-
dc.contributor.authorscopusid6602114379-
dc.contributor.authorscopusid40262107100-
dc.contributor.authorscopusid7003464918-
dc.description.lastpage801en_US
dc.description.firstpage792en_US
dc.relation.volume165en_US
dc.investigacionCiencias de la Saluden_US
dc.type2Artículoen_US
dc.description.numberofpages10en_US
dc.utils.revisionen_US
dc.date.coverdateOctubre 2011en_US
dc.identifier.ulpgcen_US
dc.contributor.buulpgcBU-MEDen_US
dc.description.sjr1,902-
dc.description.jcr3,666-
dc.description.sjrqQ1-
dc.description.jcrqQ1-
dc.description.scieSCIE-
item.fulltextSin texto completo-
item.grantfulltextnone-
crisitem.author.deptGIR IUIBS: Farmacología Molecular y Traslacional-
crisitem.author.deptIU de Investigaciones Biomédicas y Sanitarias-
crisitem.author.deptDepartamento de Ciencias Médicas y Quirúrgicas-
crisitem.author.orcid0000-0002-4344-8644-
crisitem.author.parentorgIU de Investigaciones Biomédicas y Sanitarias-
crisitem.author.fullNameRodríguez Gallego, José Carlos-
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