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Urinary Gluten Immunogenic Peptides as a Biomarker in Celiac Patients

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Biomarkers in Nutrition

Abstract

Celiac disease (CD) is treated with a lifelong gluten-free diet (GFD). Current methods for monitoring GFD conformance, such as dietary questionnaires, serology tests, or clinical symptoms, may be inaccurate in detecting dietary transgressions. Duodenal biopsies are invasive, expensive, and not a routine monitoring technique. This chapter discusses a promising advancement in the development of tests that measure immunogenic gluten peptides (GIP) in stools and urine as evidence of recent gluten exposure. GIP determination in urine or stool is a sensitive, reliable, and clinically proven method for the follow-up of patients with CD that ensures adherence to the GFD and is therefore a biomarker of the state of the duodenal mucosa. The introduction of GIP testing as an assessment technique for GFD adherence may help in targeting the most suitable interventions during follow-up and in differentiating symptoms related to CD and other conditions.

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Abbreviations

Anti-DGP:

Anti-deamidated gliadin peptide

Anti-tTG:

Anti-tissue transglutaminase

CD:

Celiac disease

ELISA:

Enzyme-linked immunosorbent assay

EMA:

Anti-endomysial antibody

GFD:

Gluten-free diet

GIP:

Gluten immunogenic peptides

LFIA:

Lateral flow immunoassay

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Ruiz-Carnicer, Á., Garzón-Benavides, M., Sousa, C., Pizarro, Á. (2022). Urinary Gluten Immunogenic Peptides as a Biomarker in Celiac Patients. In: Patel, V.B., Preedy, V.R. (eds) Biomarkers in Nutrition . Biomarkers in Disease: Methods, Discoveries and Applications. Springer, Cham. https://doi.org/10.1007/978-3-030-81304-8_52-1

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  • DOI: https://doi.org/10.1007/978-3-030-81304-8_52-1

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