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Dietary Protein and Amino Acid Supplementation in Inflammatory Bowel Disease Course: What Impact on the Colonic Mucosa?

1
UMR 914 INRA/AgroParisTech/Université Paris Saclay, Nutrition Physiology and Ingestive Behavior, 16 rue Claude Bernard, F-75005 Paris, France
2
Department of Gastroenterology, Avicenne Hospital, Assistance Publique-Hôpitaux de Paris, F-93000 Bobigny, France
*
Authors to whom correspondence should be addressed.
Nutrients 2017, 9(3), 310; https://doi.org/10.3390/nu9030310
Received: 31 January 2017 / Revised: 13 March 2017 / Accepted: 16 March 2017 / Published: 21 March 2017
(This article belongs to the Special Issue Nutrition and Diet in IBD)
Inflammatory bowel diseases (IBD), after disease onset, typically progress in two cyclically repeated phases, namely inflammatory flare and remission, with possible nutritional status impairment. Some evidence, either from epidemiological, clinical, and experimental studies indicate that the quantity and the quality of dietary protein consumption and amino acid supplementation may differently influence the IBD course according to the disease phases. For instance, although the dietary protein needs for mucosal healing after an inflammatory episode remain undetermined, there is evidence that amino acids derived from dietary proteins display beneficial effects on this process, serving as building blocks for macromolecule synthesis in the wounded mucosal area, energy substrates, and/or precursors of bioactive metabolites. However, an excessive amount of dietary proteins may result in an increased intestinal production of potentially deleterious bacterial metabolites. This could possibly affect epithelial repair as several of these bacterial metabolites are known to inhibit colonic epithelial cell respiration, cell proliferation, and/or to affect barrier function. In this review, we present the available evidence about the impact of the amount of dietary proteins and supplementary amino acids on IBD onset and progression, with a focus on the effects reported in the colon. View Full-Text
Keywords: inflammatory bowel disease; dietary proteins; amino acid supplementation inflammatory bowel disease; dietary proteins; amino acid supplementation
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Vidal-Lletjós, S.; Beaumont, M.; Tomé, D.; Benamouzig, R.; Blachier, F.; Lan, A. Dietary Protein and Amino Acid Supplementation in Inflammatory Bowel Disease Course: What Impact on the Colonic Mucosa? Nutrients 2017, 9, 310.

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