Plasma Alkylresorcinols Reflect Gluten Intake and Distinguish between Gluten-Rich and Gluten-Poor Diets in a Population at Risk of Metabolic Syndrome
Artikel i vetenskaplig tidskrift, 2016

Background: Many patients with celiac disease experience difficulties in adherence to a gluten-free diet. Methods for testing compliance to a gluten-free diet are costly and cumbersome. Thus, a simple biomarker of gluten intake is needed in a clinical setting and will be useful for epidemiologic studies investigating wider effects of gluten intake. Objective: The aim was to evaluate plasma total alkylresorcinol concentrations as a measure of gluten intake. Methods: In this randomized, controlled, crossover intervention study in 52 Danish adults with features of the metabolic syndrome, we compared 8 wk of a gluten-rich and gluten-poor diet separated by a washout period of wk. We measured fasting plasma concentrations of alkylresorcinols to determine if they reflected differences in gluten intake as a secondary outcome of the original study. In addition, we investigated in 118 Danish adults the cross-sectional association between self reported gluten intake and plasma alkylresorcinols in the same and a similar study at baseline. We used mixed-model ANCOVA for examining treatment effects, a classification tree to determine compliance to the gluten-poor diet, and linear regression models for examining baseline correlation between plasma alkylresorcinol concentrations and gluten intake. Results: Plasma total alkylresorcinols decreased more during the gluten-poor period (geometric mean: -124.8 nmol/L; 95% CI: -156.5, -93.0 nmol/L) than in the gluten-rich period (geometric mean: -31.8 nmol/L; 95% CI: -63.1, -0.4 nmol/L) (P < 0.001). On the basis of the plasma alkylresorcinol profile, we built a classification tree to objectively determine compliance and found an overall participant misclassification error of 3.9%. In the cross-sectional study we found a 5.6% (95% CI: 2.4%, 8.9%) increase in plasma total alkylresorcinols per 1-g increase in reported gluten intake (P < 0.001). Conclusion: We propose the use of plasma alkylresorcinols to monitor compliance to a gluten-free diet as well as to help investigations into the possible effects of gluten in the wider population. This trial was registered at www.clinicaltrials.gov as NCT017119913 and NCT01731366.

cereal-grains

detection

gluten sensitivity

gluten

prevalence

whole-grain wheat

celiac disease

adults

at-risk

biomarkers

coeliac disease

adolescents

liquid-chromatography

electrochemical

rye intake

celiac-disease

gluten-related disorders

Författare

Mads Vendelbo Lind

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

M. L. Madsen

Novo Nordisk Fonden

J. J. Rumessen

Köbenhavns Universitet

H. Vestergaard

Novo Nordisk Fonden

R. J. Gabel

Novo Nordisk Fonden

T. Hansen

Novo Nordisk Fonden

L. Lauritzen

Köbenhavns Universitet

O. B. Pedersen

Novo Nordisk Fonden

M. Kristensen

Köbenhavns Universitet

Alastair Ross

Chalmers, Biologi och bioteknik, Livsmedelsvetenskap

Journal of Nutrition

0022-3166 (ISSN) 1541-6100 (eISSN)

Vol. 146 10 1991-1998

Ämneskategorier

Etologi

Styrkeområden

Livsvetenskaper och teknik

DOI

10.3945/jn.116.236398