A Randomized, Placebo-Controlled, Pilot Clinical Trial to Evaluate the Effect of Supplementation with Prebiotic Synergy 1 on Iron Homeostasis in Children and Adolescents with Celiac Disease Treated with a Gluten-Free Diet

Klaudia Feruś, Natalia Drabińska, Urszula Krupa-Kozak, Elżbieta Jarocka-Cyrta, Klaudia Feruś, Natalia Drabińska, Urszula Krupa-Kozak, Elżbieta Jarocka-Cyrta

Abstract

Iron deficiency anemia (IDA) occurs in 15⁻46% of patients with celiac disease (CD), and in some cases, it may be its only manifestation. Studies in animal models have shown that prebiotics, including inulin, may help to increase intestinal absorption of iron. The aim of this study was to evaluate the effect of a prebiotic, oligofructose-enriched inulin (Synergy 1), on iron homeostasis in non-anemic children and adolescents with celiac disease (CD) in association with a gluten-free diet (GFD). Thirty-four CD patients (4⁻18 years old) were randomized into two groups receiving Synergy 1 (10 g/day) or a placebo (maltodextrin) for three months. Before and after intervention, blood samples were collected from all patients for assessment of blood morphology, biochemical parameters and serum hepcidin concentration. We found that serum hepcidin concentration after the intervention was significantly decreased by 60.9% (p = 0.046) in the Synergy 1 group, whereas no significant difference was observed in the placebo group. No differences in morphological and biochemical blood parameters (including ferritin, hemoglobin and C-reactive protein (CRP)) were observed after intervention in either group. Given that hepcidin decrease may improve intestinal iron absorption, these results warrant further investigation in a larger cohort and especially in patients with IDA.

Keywords: celiac disease; gluten-free diet; hepcidin; inulin; iron absorption; iron deficiency anemia; prebiotics.

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Serum hepcidin concentration before (T0) and after (T1) intervention, expressed as a median (cross) (P25-P75) (box). * p = 0.046.

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