{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T00:51:33Z","timestamp":1747183893618,"version":"3.40.5"},"reference-count":37,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2020,4,1]],"date-time":"2020-04-01T00:00:00Z","timestamp":1585699200000},"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":["Clin Experimental Allergy"],"published-print":{"date-parts":[[2020,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Eosinophilic oesophagitis (EoE) is caused by the ingestion of food antigens. Dietary avoidance can result in clinical and histological remission, while food reintroduction can cause recurrence. It is uncertain if food antigen processing and immune activation occurs locally, in the oesophagus. Therefore, we performed a comparative study of the density of cell surface proteins (known to be involved with antigen presentation) on oesophageal tissue prior to, and following food antigen induced disease recurrence. A secondary aim was to consider novel biomarkers.<\/jats:p><\/jats:sec><jats:sec><jats:title>Method<\/jats:title><jats:p>Adult patients with a diagnosis of EoE, who had achieved histological remission with an elimination diet (&lt;15 eosinophils per high power field at oesophageal biopsy), and who underwent food challenge with proven recurrence were included. Immunohistochemistry\/immunofluorescence for CD1a, CD3, CD28, CD40, CD69, CD80, CD138, CXCR3 and HLA\u2010DR was performed. Staining intensity of each biomarker (pixels\/mm<jats:sup>2<\/jats:sup>) was quantified by semi\u2010automated analysis (Studio\u2010FL software).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Fourteen cases of EoE (pre and post food challenge), 6 GORD and 5 healthy controls were included. HLA\u2010DR, CD3, CD28, CD40 and CD 138 significantly increased with food reintroduction (<jats:italic>P\u00a0<\/jats:italic>=\u00a0&lt;0.05). CD1a, CD 69, CD 80 and CXCR3 did not measurably change.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The presence of cell surface proteins typically associated with antigen presentation (following food antigen induced recurrence) suggests immune activation occurs in the oesophagus, and the relative lack of langerhans cells (CD1a) may indicate this cell type is unimportant. The cell surface protein CD 138 increases with disease recurrence, is not elevated in GORD or healthy controls, and has promise as a biomarker.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cea.13578","type":"journal-article","created":{"date-parts":[[2020,2,3]],"date-time":"2020-02-03T19:32:46Z","timestamp":1580758366000},"page":"463-470","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Impact of food challenge on local oesophageal immunophenotype in eosinophilic oesophagitis"],"prefix":"10.1111","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1973-6355","authenticated-orcid":false,"given":"Hamish","family":"Philpott","sequence":"first","affiliation":[{"name":"Department of Gastroenterology NALHN, Adelaide University of Adelaide Adelaide SA Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shawn Zhenhui","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of 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