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Rochester, Minnesota 55905


The relationship or effect of food antigen (wheat based soy sauce) in eosinophilic esophagitis. It is believed that when food antigens are exposed to the esophageal tissue it starts an chronic allergy-based inflammation. This will be analyzed with the esophageal biopsies and the mucosal impedance probe.

Study summary:

One of the putative mechanisms of eosinophilic esophagitis is exposure of food antigens to antigen recognition cells in the esophageal mucosa that initiates a chronic allergy-based inflammatory response . It is believed that this exposure is facilitated through dilation of the intercellular spaces (DIS) between esophageal epithelial cells (termed spongiosis). This is substantiated by several studies which have demonstrated that: first, DIS is commonly found in biopsies from patients with active EoE and reverses with steroid therapy; second, DIS correlates to physiologic demonstration of increased esophageal epithelial permeability as shown through transepithelial small molecule flux in mucosal biopsies appraised in Ussing chambers and increased conductivity of electric current as measured in a mucosal impedance probe (Katzka, et al., in press, Clin Gastroenterol Hepatol). Although these mechanisms make intuitive sense, no one has shown the presence of food antigen in esophageal mucosa after ingestion and the correlation of this presence to dilation of intercellular spaces.


Inclusion criteria: - Patients between the ages of 18 and 80 with eosinophilic esophagitis diagnosed by a combination of compatible symptoms, endoscopic findings, histology, and lack of response to proton pump inhibitors. - Patients previously diagnosed with Eosinophilic Esophagitis and are now in histologic remission due to treatment and have <15 eos hpf. Exclusion Criteria - Acute allergy to wheat or soy - Currently taking steroids - Inability to read due to: Blindness, cognitive dysfunction, or English language illiteracy



Primary Contact:

Principal Investigator
David Katzka, MD
Mayo Clinic

Backup Contact:


Location Contact:

Rochester, Minnesota 55905
United States

There is no listed contact information for this specific location.

Site Status: N/A

Data Source: ClinicalTrials.gov

Date Processed: November 22, 2017

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