{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,16]],"date-time":"2026-04-16T13:46:38Z","timestamp":1776347198436,"version":"3.51.2"},"reference-count":40,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2021,1,12]],"date-time":"2021-01-12T00:00:00Z","timestamp":1610409600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Photoderm Photoimm Photomed"],"published-print":{"date-parts":[[2021,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Some skin diseases may modify epidermal barrier function. Psoriasis is a chronic multi\u2010systemic inflammatory disease that affects the epidermal barrier. Phototherapy is an option for treating psoriasis, but little is known about how epidermal barrier function is modified by phototherapy in psoriatic patients.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objectives<\/jats:title><jats:p>(a) To compare skin homeostasis between involved and uninvolved skin in psoriatic patients with healthy controls (b) To evaluate changes in the epidermal barrier function in psoriatic patients treated with phototherapy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Sixty patients with plaque\u2010type psoriasis and sixty gender and age\u2010matched healthy controls were enrolled. Temperature, transepidermal water loss (TEWL), stratum corneum hydration (SCH), pH, elasticity, erythema and melanin index were measured using non\u2010invasive tools in the healthy control and involved and uninvolved psoriatic skin before and after phototherapy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Healthy controls had lower TEWL and erythema index and higher SCH than psoriatic patients, both at uninvolved psoriatic skin and psoriasis plaques. TEWL was higher at psoriasis plaques than at uninvolved skin (19.20 vs 11.57\u00a0g\/h\/m<jats:sup>2<\/jats:sup>; <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a0.001). Following phototherapy, a decreasing trend was observed for TEWL, of 1.03 (SD 0.75) and 0.97 (SD 0.81)\u00a0g\/h\/m<jats:sup>2<\/jats:sup> for uninvolved and involved skin respectively. SCH was significantly lower at psoriatic plaques than at uninvolved skin (7.32 vs 36.62Arbitrary Units [AU]; <jats:italic>P<\/jats:italic>\u00a0&lt;\u00a0.001). SCH increased by 1.15AU (SD 0.26) on psoriatic plaques after the phototherapy session (<jats:italic>P<\/jats:italic>\u00a0&lt;\u00a0.001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Psoriatic plaques showed epidermal barrier dysfunction compared to uninvolved skin and healthy controls. Phototherapy may improve epidermal barrier function in psoriatic patients. SCH increased after a phototherapy session on the psoriatic plaques.<\/jats:p><\/jats:sec>","DOI":"10.1111\/phpp.12650","type":"journal-article","created":{"date-parts":[[2020,12,30]],"date-time":"2020-12-30T21:52:20Z","timestamp":1609365140000},"page":"285-292","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Epidermal barrier changes in patients with psoriasis: The role of phototherapy"],"prefix":"10.1111","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4035-7955","authenticated-orcid":false,"given":"Trinidad","family":"Montero\u2010Vilchez","sequence":"first","affiliation":[{"name":"Dermatology Department Hospital Universitario Virgen de las Nieves Granada Spain"},{"name":"Instituto de Investigaci\u00f3n Biosanitaria IBS Granada 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