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Nutrients 2019, 11(3), 514; https://doi.org/10.3390/nu11030514

Dietary Protein Intake Level Modulates Mucosal Healing and Mucosa-Adherent Microbiota in Mouse Model of Colitis

1
UMR PNCA, AgroParisTech, INRA, Université Paris-Saclay, 75005 Paris, France
2
UMR MICALIS, AgroParisTech, INRA, Université Paris-Saclay, 78350 Jouy-en-Josas, France
3
H2P2, Biosit-Biogenouest, Université de Rennes 1, 35005 Rennes, France
*
Author to whom correspondence should be addressed.
Received: 11 February 2019 / Revised: 22 February 2019 / Accepted: 24 February 2019 / Published: 28 February 2019
(This article belongs to the Special Issue Nutrition in Inflammatory Bowel Disease (IBD))
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Abstract

Mucosal healing after an inflammatory flare is associated with lasting clinical remission. The aim of the present work was to evaluate the impact of the amount of dietary protein on epithelial repair after an acute inflammatory episode. C57BL/6 DSS-treated mice received isocaloric diets with different levels of dietary protein: 14% (P14), 30% (P30) and 53% (P53) for 3 (day 10), 6 (day 13) and 21 (day 28) days after the time of colitis maximal intensity. While the P53 diet worsened the DSS- induced inflammation both in intensity and duration, the P30 diet, when compared to the P14 diet, showed a beneficial effect during the epithelial repair process by accelerating inflammation resolution, reducing colonic permeability and increasing epithelial repair together with epithelial hyperproliferation. Dietary protein intake also impacted mucosa-adherent microbiota composition after inflammation since P30 fed mice showed increased colonization of butyrate-producing genera throughout the resolution phase. This study revealed that in our colitis model, the amount of protein in the diet modulated mucosal healing, with beneficial effects of a moderately high-protein diet, while very high-protein diet displayed deleterious effects on this process. View Full-Text
Keywords: dietary protein level; colitis; epithelial repair; mucosa-adherent microbiota dietary protein level; colitis; epithelial repair; mucosa-adherent microbiota
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Vidal-Lletjós, S.; Andriamihaja, M.; Blais, A.; Grauso, M.; Lepage, P.; Davila, A.-M.; Viel, R.; Gaudichon, C.; Leclerc, M.; Blachier, F.; Lan, A. Dietary Protein Intake Level Modulates Mucosal Healing and Mucosa-Adherent Microbiota in Mouse Model of Colitis. Nutrients 2019, 11, 514.

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