Dietary Protein Intake Level Modulates Mucosal Healing and Mucosa-Adherent Microbiota in Mouse Model of Colitis
2019
Vidal-Lletjos, Sandra | Andriamihaja, Mireille | Blais, Anne | Grauso, Marta | Lepage, Patricia | Davila, Anne-Marie | Viel, Roselyne | Gaudichon, Claire, C. | Leclerc, Marion | Blachier, Francois | Lan, Annaig | Physiologie de la Nutrition et du Comportement Alimentaire (PNCA) ; Institut National de la Recherche Agronomique (INRA)-AgroParisTech | MICrobiologie de l'ALImentation au Service de la Santé (MICALIS) ; Institut National de la Recherche Agronomique (INRA)-AgroParisTech | H2P2 - Histo Pathologie Hight Precision (H2P2) ; Université de Rennes (UR)-Structure Fédérative de Recherche en Biologie et Santé de Rennes (Biosit : Biologie - Santé - Innovation Technologique) | Institut National de Recherche Agronomique - AgroParisTech | Societe Francaise de Nutrition | Association Francois Aupetit | INRA-Universite Paris-Saclay (ALIAS program)
International audience
Show more [+] Less [-]English. 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.
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Institut national de la recherche agronomique