The goal of this clinical trial is to evaluate the immune response to gluten in patients with celiac disease (CeD) by comparing different forms of gluten administration. The participant population includes adults diagnosed with CeD, who are adhering to a gluten-free diet (GFD). The main questions it aims to answer are: * Does liquid gluten administration elicit a higher IL-2 cytokine response compared to solid gluten administration? * What is the relationship between serum IL-2 levels and gluten peptide serum concentrations following gluten challenges? Researchers will compare the responses of two groups: participants receiving liquid gluten (shake) to those receiving solid gluten (cookie) to determine if there is a significant difference in the IL-2 response rates between the two forms. Participants will be asked to: * Undergo two gluten challenges (liquid and solid) in a randomized order with at least 4 weeks apart. * Provide blood samples before and after each challenge to measure serum IL-2 levels and gluten peptide concentrations over a period of 6 hours. * Report any symptoms experienced following each gluten challenge.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Enrollment
30
Gluten-containing shake vs gluten-containing cookie
Half of participants will receive gluten-containing shake first, then gluten-containing cookie next, and vice versa
Oslo University Hospital
Oslo, Oslo County, Norway
Lovisenberg Diakonale Hospital
Oslo, Oslo County, Norway
Comparison of serum IL-2 response rates between the gluten shake group and the cookie group
A responder is defined as an individual exhibiting a log-transformed cytokine level equal to or greater than 0. This level corresponds to 1.0 pg/ml in concentration of IL-2 in serum. The hypothesis is that there is a higher proportion of responders in the gluten shake group compared to the cookie group.
Time frame: From baseline to 4 hours at visit 1
Correlation between serum IL-2 response levels and baseline whole blood plasma IL-2
Time frame: From baseline to 6 hours after gluten intake
Correlation between serum IL-2 response levels and baseline number of gluten-specific T cells
Time frame: From baseline to 6 hours after gluten intake
Correlation between serum IL-2 response levels and symptom severity
Time frame: From baseline to 6 hours after gluten intake
Comparison of serum IL-2 response levels and serum gluten peptide levels
Time frame: From baseline to 6 hours after gluten intake
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