The investigators will investigate the effects of acute and sub-acute administration of gluten on mood, intestinal permeability, gastrointestinal symptoms and gut peptide levels in healthy volunteers (HV).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
SINGLE
Enrollment
20
Jan Tack
Leuven, Belgium
TARGID
Leuven, Belgium
The effect of gluten acutely and sub-acutely on extraintestinal symptoms in HV measured on the Positive and Negative Affect Schedule
Change from baseline. Scores can be 'very slightly or not at all', 'a little', 'moderately', 'quite a bit', 'extremely'. Measured at day 0, day 15, day 20, day 36 and day 41.
Time frame: At the beginning of test visit 0 (day 0), visit 1 (at day 15), test visit 2 (at day 20), after test visit 3 (at day 36), after test visit 4 (at day 41)
The effect of gluten acutely and sub-acutely on extraintestinal symptoms in HV measured on the Profile of Mood State.
Change from baseline. Scores are measured on the Visual Analogue Scale. The scale is ranged 0 - 10, in which 0 no occurrence of the symptom and 10 a lot occurrence of the symptom. Measured at day 0, day 15, day 20, day 36 and day 41.
Time frame: At the beginning of test visit 0 (day 0), visit 1 (at day 15), test visit 2 (at day 21), after test visit 3 (at day 36), after test visit 4 (at day 41)
The effect of gluten acutely and sub-acutely on gastrointestinal symptoms in HV measured on the visual analogue scale for gastrointestinal symptoms
Scores are measured on the Visual Analogue Scale. With '0' no complaints and '10' a lot of complaints (change from baseline).
Time frame: At the beginning of test visit 0 (day 0), visit 1 (at day 15), test visit 2 (at day 21), after test visit 3 (at day 36), after test visit 4 (at day 41)
The effect of gluten acutely and sub-acutely on intestinal permeability (using the lactulose mannitol ratio)
Investigate change in intestinal permeability after gluten administration. In the urine we can measure the ratio lactulose/mannitol. This can be measured using High Performance Liquid Chromatography
Time frame: At the beginning of test visit 0 (day 0), visit 1 (at day 15), test visit 2 (at day 20), after test visit 3 (at day 36), after test visit 4 (at day 41)
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Effect of acute and sub-acute gluten administration on high sensitive reactive protein levels in blood samples
Change in high sensitive reactive protein levels measured at day 0, day 21 and day 41.
Time frame: During test visit 0 (day 0), test visit 2 (at day 21), after test visit 4 (at day 41)
Effect of acute and sub-acute gluten administration on Lipopolysaccharide-Binding Protein levels in blood samples
Change in lipopolysaccharide-binding protein levels measured at day 0, day 21 and day 41.
Time frame: During test visit 0 (day 0), test visit 2 (at day 21), after test visit 4 (at day 41)
Effect of acute and sub-acute gluten administration on Lipopolysaccharide levels in blood samples
Change in lipopolysaccharide levels measured at day 0, day 21 and day 41.
Time frame: During test visit 0 (day 0), test visit 2 (at day 21), after test visit 4 (at day 41)
Effect of acute and sub-acute gluten administration on gut microbiota composition (stool samples)
Change in gut microbiota composition (compared to day 0) with focus on: Bifidobacterium, Lactobacillus, Enterobacteriaceae, E. coli; measured in stool samples. Analyses will provide an overall view of the gut microbiota composition.
Time frame: After test visit 0 (day 0), day 13 and day 14, after test visit 1 (day 15), day 16, 17, 18, 19 and 20, two days before test visit 3 (day 34 and 35), day 36, 37, 38, 39, 40
Effect of acute and sub-acute gluten administration on cortisol awakening response (saliva samples)
Change in cortisol levels between gluten and placebo administration (saliva samples). Measured using an ELISA assay.
Time frame: Day before test visit 1 (day 14), test visit 1 (day 15), test visit 2 (day 21), day before test visit 3 (day 35), test visit 3 (day 36) and test visit 4 (day 41)