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The Impact of Red Meat and Whole-grains Intake on the Colonic Mucosal Barrier

Dietary Exposure Clinical Trial

Official title:
The Impact of Red Meat and Whole-grains Intake on the Colonic Mucus' Thickness, Colonic MUC-2 Expression Rate and the Inflammatory Markers in the Blood.

Clinical Trial Summary

This study evaluates the impact of red meat and whole-grain intake on the colonic mucosal barrier and the dietary impact of these groups on the induced low-grade inflammation

Clinical Trial Description

The mucus layer in the colon is a continuous barrier separating the epithelial cells from faecal enzymes, bacteria, toxic and other components. The colonic mucus layer in patients with Crohn's Disease and Ulcerative Colitis was previously demonstrated to be thinner and more permeable compared to healthy subjects.

The colonic mucus is composed of glycoproteins held together trough unstable disulfide bridges. The digestion of red meat is associated with monosulfide production, which could bind to the disulfide molecules, make more stable trisulfide molecules, and thus destroy the mucus architecture. Moreover, different bacteria were previously linked to red meat intake and were associated with a degradation of the colonic mucus such as akkermansia muciniphila.

From the other side, the fermentation of the undigested fibres, primarily in whole-grains, is associated with the production of short-chain fatty acids, which was related to a local anti-inflammatory effect.

In this study, we hypothesise:

1. High consumption of red meat is associated with a thinner colonic mucus layer;

2. High consumption of whole-grain fibres is associated with a thicker colonic mucus layer;

3. Mucin-2 gene expression is different between patients with high red meat consumption vs low red meat consumption;

4. Mucin-2 gene expression is different between patients with high whole-grain consumption vs low whole-grain intake;

5. The level of inflammatory markers in blood "IL-1beta, IL-4, IL-6, IL-10, Hs-CRP, and TNF-alfa is higher in subjects with high red meat and low whole-grain intake. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04235348
Study type Observational
Source University of Southern Denmark
Contact
Status Completed
Phase
Start date June 1, 2017
Completion date February 28, 2020
View Details
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