L-arginine promotes gut hormone release and reduces food intake in rodents.
Diabetes Obes Metab
; 18(5): 508-18, 2016 May.
Article
em En
| MEDLINE
| ID: mdl-26863991
ABSTRACT
AIMS:
To investigate the anorectic effect of L-arginine (L-Arg) in rodents.METHODS:
We investigated the effects of L-Arg on food intake, and the role of the anorectic gut hormones glucagon-like peptide-1 (GLP-1) and peptide YY (PYY), the G-protein-coupled receptor family C group 6 member A (GPRC6A) and the vagus nerve in mediating these effects in rodents.RESULTS:
Oral gavage of L-Arg reduced food intake in rodents, and chronically reduced cumulative food intake in diet-induced obese mice. Lack of the GPRC6A in mice and subdiaphragmatic vagal deafferentation in rats did not influence these anorectic effects. L-Arg stimulated GLP-1 and PYY release in vitro and in vivo. Pharmacological blockade of GLP-1 and PYY receptors did not influence the anorectic effect of L-Arg. L-Arg-mediated PYY release modulated net ion transport across the gut mucosa. Intracerebroventricular (i.c.v.) and intraperitoneal (i.p.) administration of L-Arg suppressed food intake in rats.CONCLUSIONS:
L-Arg reduced food intake and stimulated gut hormone release in rodents. The anorectic effect of L-Arg is unlikely to be mediated by GLP-1 and PYY, does not require GPRC6A signalling and is not mediated via the vagus. I.c.v. and i.p. administration of L-Arg suppressed food intake in rats, suggesting that L-Arg may act on the brain to influence food intake. Further work is required to determine the mechanisms by which L-Arg suppresses food intake and its utility in the treatment of obesity.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Depressores do Apetite
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Arginina
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Fármacos Gastrointestinais
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Peptídeo YY
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Suplementos Nutricionais
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Peptídeo 1 Semelhante ao Glucagon
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Obesidade
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article