The effect of gluten on intestinal fermentation, gastric and gallbladder emptying in healthy volunteers.
2015
Abstract Background The relationship between gluten ingestion and gastrointestinal tract function is a matter of debate. Aim We analysed the effect of gluten on gastric and gallbladder emptying and intestinal fermentation in healthy volunteers. Methods Ultrasound measurement of gastric and gallbladder emptying after both gluten-containing and gluten-free meals was performed in 18 volunteers (8 women, age 25.0 ± 2.5 years; BMI 22 ± 1.9). Breath hydrogen excretion after a gluten-containing meal, a gluten-free meal and a gluten-free meal with added gluten powder was measured in 16 volunteers (10 women, age 25.2 ± 2.7 years; BMI 22 ± 1.8). The severity of symptoms was monitored. Results Gluten presence in the meals was not recognised. Gastric emptying time was 81.6 ± 13.8 min after gluten-containing and 73.9 ± 21.6 min after gluten-free meals ( p = 0.11). Percentage ejection fraction after gluten-containing meals was 60 ± 9% and 60.6 ± 6% after gluten-free meals ( p = 0.68). Peak and cumulative hydrogen excretion were significantly higher after gluten-containing than after gluten-free meals (peak: 12.5 ± 7.3 vs 6.5 ± 5.1 parts-per-million, p p Conclusions In healthy volunteers, gluten may induce gastrointestinal alterations. Further studies are needed to clarify which patients could benefit from dietary modification.
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