Proton Pump Inhibitors Partially Restore Mucosal Integrity in Patients With Proton Pump Inhibitor–Responsive Esophageal Eosinophilia but Not Eosinophilic.

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Proton Pump Inhibitors Partially Restore Mucosal Integrity in Patients With Proton Pump Inhibitor–Responsive Esophageal Eosinophilia but Not Eosinophilic Esophagitis  Bram D. van Rhijn, Pim W. Weijenborg, Joanne Verheij, Marius A. van den Bergh Weerman, Caroline Verseijden, René M.J.G.J. van den Wijngaard, Wouter J. de Jonge, Andreas J.P.M. Smout, Albert J. Bredenoord  Clinical Gastroenterology and Hepatology  Volume 12, Issue 11, Pages 1815-1823.e2 (November 2014) DOI: 10.1016/j.cgh.2014.02.037 Copyright © 2014 AGA Institute Terms and Conditions

Figure 1 Study protocol and patient subgroup selection. The esophageal mucosal integrity of patients and controls was measured at baseline. In patients, the integrity and inflammation were measured after PPI treatment. Based on the eosinophil count after PPI treatment, patients were categorized as PPI-REE (≤10 eos/hpf) or EoE (>10 eos/hpf). Clinical Gastroenterology and Hepatology 2014 12, 1815-1823.e2DOI: (10.1016/j.cgh.2014.02.037) Copyright © 2014 AGA Institute Terms and Conditions

Figure 2 (A) Extracellular impedance, (B) TER, (C) fluorescein flux, and (D) intercellular space show impaired mucosal integrity in PPI-REE patients and EoE patients compared with controls. Black bars indicate medians. Clinical Gastroenterology and Hepatology 2014 12, 1815-1823.e2DOI: (10.1016/j.cgh.2014.02.037) Copyright © 2014 AGA Institute Terms and Conditions

Figure 3 (A) Extracellular impedance, (B) TER, (C) fluorescein flux, (D) rhodamine flux, and (E) intercellular space in PPI-REE patients after PPI. Black bars indicate medians. Clinical Gastroenterology and Hepatology 2014 12, 1815-1823.e2DOI: (10.1016/j.cgh.2014.02.037) Copyright © 2014 AGA Institute Terms and Conditions

Figure 4 (A) Extracellular impedance, (B) TER, (C) fluorescein flux, (D) rhodamine flux, and (E) intercellular space in EoE patients after PPI. Black bars indicate medians. Clinical Gastroenterology and Hepatology 2014 12, 1815-1823.e2DOI: (10.1016/j.cgh.2014.02.037) Copyright © 2014 AGA Institute Terms and Conditions

Figure 5 Transmission electron microscopy images of the basal prickle layer of esophageal mucosal biopsy specimens showing dilated intercellular spaces. Intercellular spaces were not different between PPI-REE and EoE patients at baseline and after PPI. Nevertheless, in some PPI-REE patients (eg, PPI-REE patient 1), the intercellular spaces were reduced after PPI. Scale bars: 5 μm. pt#, patient number. Clinical Gastroenterology and Hepatology 2014 12, 1815-1823.e2DOI: (10.1016/j.cgh.2014.02.037) Copyright © 2014 AGA Institute Terms and Conditions

Figure 6 Endoscopic pictures of PPI-REE and EoE patients. Endoscopy could not distinguish PPI-REE from EoE patients, although after PPI, more EoE than PPI-REE patients (7 vs 2) showed linear furrows (P = .04). pt#, patient number. Clinical Gastroenterology and Hepatology 2014 12, 1815-1823.e2DOI: (10.1016/j.cgh.2014.02.037) Copyright © 2014 AGA Institute Terms and Conditions