PMID- 25023586 OWN - NLM STAT- MEDLINE DCOM- 20150618 LR - 20141024 IS - 1536-4801 (Electronic) IS - 0277-2116 (Linking) VI - 59 IP - 5 DP - 2014 Nov TI - Dilated intercellular spaces in eosinophilic esophagitis. PG - 589-93 LID - 10.1097/MPG.0000000000000491 [doi] AB - OBJECTIVES: Dilated intercellular spaces (DIS) in the esophageal epithelium can be induced by acid and reduced by proton pump inhibitors (PPI), and are thus considered a marker of gastroesophageal reflux disease (GERD). Over the years, however, DIS have also been reported in esophagitis unrelated to GERD. Because DIS have never been formally measured in eosinophilic esophagitis (EoE), we aimed at detecting and measuring DIS in EoE before and after nutritional or pharmacological therapy. METHODS: In 22 children with EoE, DIS were measured by morphometry and transmission electron microscopy (TEM), before and after treatment with topical steroids (n = 16) and/or exclusion diet (n = 13). A total of 30 children undergoing upper gastrointestinal endoscopy with biopsy for nonesophageal disorders acted as controls. RESULTS: In controls, the mean (+/- standard deviation [SD]) number of esophageal eosinophils was 0.91 (+/- 0.47) and the mean DIS values were 0.62 (+/- 0.08) mum at morphometry and 0.33 (+/- 0.24) mum at TEM. In patients with EoE, the mean (+/- SD) number of esophageal eosinophils decreased from 31.8 (+/- 6.96) to 6.64 (+/- 5.01) (P < 0.0001), and the mean DIS values decreased from 2.26 (+/- 0.21) to 1.23 (+/- 0.20) mum at morphometry (P < 0.0001), and from 2.24 (+/- 0.28) to 0.98 (+/- 0.19) mum at TEM (P < 0.0001), respectively, before and after treatment. CONCLUSIONS: DIS are a prominent morphological feature of EoE, in which they can be significantly reduced by an appropriate non-PPI therapy. FAU - Ravelli, Alberto AU - Ravelli A AD - *Gastroenterology and GI Endoscopy Unit, University Department of Pediatrics, Children's Hospital daggerDepartment of Pathology II, Spedali Civili, Brescia, Italy. FAU - Villanacci, Vincenzo AU - Villanacci V FAU - Cadei, Moris AU - Cadei M FAU - Fuoti, Maurizio AU - Fuoti M FAU - Gennati, Giada AU - Gennati G FAU - Salemme, Marianna AU - Salemme M LA - eng PT - Journal Article PL - United States TA - J Pediatr Gastroenterol Nutr JT - Journal of pediatric gastroenterology and nutrition JID - 8211545 SB - IM MH - Adolescent MH - Child MH - Child, Preschool MH - Eosinophilic Esophagitis/*pathology MH - Eosinophils/*pathology MH - Esophagus/*pathology MH - *Extracellular Space MH - Female MH - Humans MH - Infant MH - Male MH - Mucous Membrane/*pathology EDAT- 2014/07/16 06:00 MHDA- 2015/06/19 06:00 CRDT- 2014/07/16 06:00 PHST- 2014/07/16 06:00 [entrez] PHST- 2014/07/16 06:00 [pubmed] PHST- 2015/06/19 06:00 [medline] AID - 10.1097/MPG.0000000000000491 [doi] PST - ppublish SO - J Pediatr Gastroenterol Nutr. 2014 Nov;59(5):589-93. doi: 10.1097/MPG.0000000000000491.