Dose-dependent beneficial effects of citrulline supplementation in short bowel syndrome in rats

Autor: Stephanie Walrand, Nathalie Neveux, Virgine Lasserre, Jean Maccario, Servane Le Plénier, Amandine Rubio, Christophe Moinard, Luc Cynober, Xavier Hébuterne, Jerome Filippi
Přispěvatelé: Laboratoire de biologie de la nutrition (LBN), Université Paris Descartes - Paris 5 (UPD5), Université de Paris (UP), Laboratoire de biomathématiques, EA 7537 [Paris] (BioSTM), Université de Paris - UFR Pharmacie [Santé] (UP UFR Pharmacie), Université de Paris (UP)-Université de Paris (UP), Unité de Nutrition Humaine (UNH), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Clermont Auvergne (UCA), AP-HP - Hôpital Cochin Broca Hôtel Dieu [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), French Ministry of Research and TechnologyEA 4466, Université Paris Cité (UPCité), Biostatistique, traitement et modélisation des données biologiques = Biostatistic, Biological Data treatment and Modelisation (BioSTM - URP_7537)
Rok vydání: 2020
Předmět:
Zdroj: Nutrition
Nutrition, Elsevier, 2021, 85, pp.111118. ⟨10.1016/j.nut.2020.111118⟩
Nutrition, 2021, 85, pp.111118. ⟨10.1016/j.nut.2020.111118⟩
ISSN: 1873-1244
0899-9007
DOI: 10.1016/j.nut.2020.111118⟩
Popis: International audience; Objectives: Supplementing diet with citrulline has proved an efficient means of preserving nitrogen balance and improving nutritional status after massive intestinal resection. The aim of this study was to model the action of citrulline in gut-resected rats using a dose-ranging study focused on skeletal muscle nitrogen homeostasis.Methods: Forty-six rats were randomly assigned to one of the following groups: citrulline 0.5 g.kg.d(-1) (n = 9), citrulline 1 g.kg.d(-1) (n = 7), citrulline 2.5 g.kg.d(-1) (n = 8), citrulline 5 g.kg.d(-1) (n = 8), control (n = 6), and sham (n = 8). The sham group underwent transection and the other groups underwent resection of 80% of the small intestine. All rats were then fed enteral nutrition (EN; all diets were isocaloric and isonitrogenous). After 10 d, the rats were sacrificed to measure and analyze animal weight; duodenum, jejunum, and ileum weight; and muscle trophicity. Protein fractional synthesis rate (FSR) and mammalian target of rapamycin complex (mTORC)1 activation were measured in the tibialis muscle.Results: There was a significant dose-dependent association between rat weight and citrulline dose up to 2.5 g.kg.d(-1) (P = 0.004). There was a significant improvement in tibialis weight correlated to plasma citrulline. Net protein FSR in the tibialis tended to be greater after resection and tended to return to baseline after citrulline supplementation. Citrulline supplementation significantly decreased the activated phosphorylated forms of S6 K1 (P = 0.003) and S6 RP (P = 0.003), with a significant positive association between myofibrillar FSR and activation of S6 K1 (r = 0.614; P = 0.02) and S6 RP (r = 0.601; P = 0.023). Jejunum weight was significantly positively correlated with plasma citrulline (r = 0.319; P = 0.0345).Conclusion: Citrulline promotes body weight gain, preserves muscle trophicity, and enhances intestinal adaptation in a dose-dependent manner in a model of resected rats.
Databáze: OpenAIRE
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