Gut, 2013-06, Vol.62 (6), p.824-832
2013
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- Autor(en) / Beteiligte
- Titel
- Omeprazole blocks eotaxin-3 expression by oesophageal squamous cells from patients with eosinophilic oesophagitis and GORD
- Ist Teil von
- Gut, 2013-06, Vol.62 (6), p.824-832
- Ort / Verlag
- England: BMJ Publishing Group Ltd and British Society of Gastroenterology
- Erscheinungsjahr
- 2013
- Quelle
- BMJ Journals Archiv - DFG Nationallizenzen
- Beschreibungen/Notizen
- Objective Eosinophilic oesophagitis (EoE) and gastro-oesophageal reflux disease (GORD) can have similar clinical and histological features. Proton pump inhibitors (PPIs) are used to distinguish the disorders, with the assumption that only GORD can respond to PPIs. Oesophageal expression of eotaxin-3 stimulated by Th2 cytokines might contribute to oesophageal eosinophilia in EoE. Th2 cytokine effects on the oesophagus in GORD are not known. The objective of the authors was to explore the molecular mechanisms of Th2 cytokines on eotaxin-3 expression by oesophageal squamous cells from patients with GORD and EoE, and the effects of omeprazole on that eotaxin-3 expression. Design Using telomerase-immortalised and primary cultures of oesophageal squamous cells from GORD and EoE patients, the authors measured eotaxin-3 protein secretion stimulated by Th2 cytokines (interleukin (IL)-4 and IL-13). Eotaxin-3 promoter constructs were used to study transcriptional regulation. Cytokine-induced eotaxin-3 mRNA and protein expression were measured in the presence or absence of omeprazole. Results There were no significant differences between EoE and GORD primary cells in cytokine-stimulated eotaxin-3 protein secretion levels. In EoE and GORD cell lines, IL-4 and IL-13 activated the eotaxin-3 promoter, and significantly increased eotaxin-3 mRNA and protein expression. Omeprazole blocked the cytokine-stimulated increase in eotaxin-3 mRNA and protein expression in EoE and GORD cell lines. Conclusion Oesophageal squamous cells from GORD and EoE patients express similar levels of eotaxin-3 when stimulated by Th2 cytokines, and omeprazole blocks that eotaxin-3 expression. These findings suggest that PPIs might have eosinophil-reducing effects independent of effects on acid reflux and that response to PPIs might not distinguish EoE from GORD.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0017-5749eISSN: 1468-3288DOI: 10.1136/gutjnl-2012-302250Titel-ID: cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_3552049
- Format
- –
- Schlagworte
- ACID, acid-related diseases, Acids, Adult, Barrett's carcinoma, Barrett's metaplasia, Barrett's oesophagus, Cell culture, Cell lines, Cells, Cultured, Chemokine CCL26, Chemokines, CC - drug effects, Chemokines, CC - genetics, Chemokines, CC - metabolism, Clinical medicine, Cytokines, Dysphagia, Endoscopy, Enzyme-Linked Immunosorbent Assay, Eosinophilia, Eosinophilic Esophagitis - drug therapy, Eosinophilic Esophagitis - metabolism, Eosinophilic oesophagitis, Eotaxin, eotaxin-3, epithelial barrier, epithelial cells, Epithelial Cells - drug effects, Epithelial Cells - metabolism, Esophageal cancer, Esophageal diseases, Esophagitis, Esophagus, Esophagus - pathology, Female, fibrogenesis, Food allergies, gastro-oesphageal junction, Gastroesophageal reflux, Gastroesophageal Reflux - drug therapy, Gastroesophageal Reflux - metabolism, Gene expression, Gene Expression Regulation, Gene regulation, GORD, Humans, Interleukin 13, Interleukin 4, Interleukin-13 - antagonists & inhibitors, Interleukin-13 - pharmacology, Interleukin-4 - antagonists & inhibitors, Interleukin-4 - pharmacology, Leukocytes (eosinophilic), Lymphocytes T, Male, Middle Aged, molecular biology, molecular carcinogenesis, Molecular modelling, Omeprazole, Omeprazole - therapeutic use, Proton pump inhibitors, Proton Pump Inhibitors - therapeutic use, Real-Time Polymerase Chain Reaction, Review boards, RNA, Messenger - metabolism, Squamous cell carcinoma, Squamous cells, Studies, Telomerase, Th2 Cells - physiology, Th2 cytokines, Transcription, Veterans