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Erschienen in: European Journal of Nutrition 4/2019

29.03.2018 | Original Contribution

Dietary wheat amylase trypsin inhibitors exacerbate murine allergic airway inflammation

verfasst von: Victor F. Zevallos, Verena K. Raker, Joachim Maxeiner, Petra Scholtes, Kerstin Steinbrink, Detlef Schuppan

Erschienen in: European Journal of Nutrition | Ausgabe 4/2019

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Abstract

Background

Wheat amylase trypsin inhibitors (ATI) are dietary non-gluten proteins that activate the toll-like receptor 4 on myeloid cells, promoting intestinal inflammation.

Aim of the study

We investigated the effects of dietary ATI on experimental allergic airway inflammation.

Methods

Mice on a gluten and ATI-free diet (GAFD), sensitized with PBS or ovalbumin (OVA) and challenged with OVA, were compared to mice on a commercial standard chow, a gluten diet naturally containing ~ 0.75% of protein as ATI (G+AD), a gluten diet containing ~ 0.19% of protein as ATI (G−AD) and a GAFD with 1% of protein as ATI (AD). Airway hyperreactivity (AHR), inflammation in bronchoalveolar lavage (BAL) and pulmonary tissue sections were analyzed. Allergic sensitization was assessed ex vivo via proliferation of OVA-stimulated splenocytes.

Results

Mice on a GAFD sensitized with PBS did not develop AHR after local provocation with methacholine. Mice on a GAFD or on a G−AD and sensitized with OVA developed milder AHR compared to mice fed a G+AD or an AD. The increased AHR was paralleled by increased BAL eosinophils, IL-5 and IL-13 production, and an enhanced ex vivo splenocyte activation in the ATI-fed groups.

Conclusions

Dietary ATI enhance allergic airway inflammation in OVA-challenged mice, while an ATI-free or ATI-reduced diet has a protective effect on AHR. Nutritional wheat ATI, activators of intestinal myeloid cells, may be clinically relevant adjuvants to allergic airway inflammation.
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Literatur
22.
Zurück zum Zitat Barnard DE, Lewis SM, Teter BB, Thigpen JE (2009) Open- and closed-formula laboratory animal diets and their importance to research. J Am Assoc Lab Anim Sci 48(6):709–713PubMedPubMedCentral Barnard DE, Lewis SM, Teter BB, Thigpen JE (2009) Open- and closed-formula laboratory animal diets and their importance to research. J Am Assoc Lab Anim Sci 48(6):709–713PubMedPubMedCentral
Metadaten
Titel
Dietary wheat amylase trypsin inhibitors exacerbate murine allergic airway inflammation
verfasst von
Victor F. Zevallos
Verena K. Raker
Joachim Maxeiner
Petra Scholtes
Kerstin Steinbrink
Detlef Schuppan
Publikationsdatum
29.03.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Nutrition / Ausgabe 4/2019
Print ISSN: 1436-6207
Elektronische ISSN: 1436-6215
DOI
https://doi.org/10.1007/s00394-018-1681-6

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