Author, as appears in the article.: Pinent, M. Ardèvol, A. Blay, M. Martínez, N. González, N.
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: http://pubs.acs.org/doi/pdf/10.1021/jf405239p
Department: Bioquímica i Biotecnologia
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
URV's Author/s: Noemi González-Abuín; Neus Martínez-Micaelo; Mayte Blay; Anna Ardévol; Montserrat Pinent
Abstract: Grape-seed procyanidin extract (GSPE) has been reported to improve insulin resistance in cafeteria rats. Because glucagon-like peptide-1 (GLP-1) is involved in glucose homeostasis, the preventive effects of GSPE on GLP-1 production, secretion, and elimination were evaluated in a model of diet-induced insulin resistance. Rats were fed a cafeteria diet for 12 weeks, and 25 mg of GSPE/kg of body weight was administered concomitantly. Vehicle-treated cafeteria-fed rats and chow-fed rats were used as controls. The cafeteria diet decreased active GLP-1 plasma levels, which is attributed to a decreased intestinal GLP-1 production, linked to reduced colonic enteroendocrine cell populations. Such effects were prevented by GSPE. In the same context, GSPE avoided the decrease on intestinal dipeptidyl-peptidase 4 (DPP4) activity and modulated the gene expression of GLP-1 and its receptor in the hypothalamus. In conclusion, the preventive treatment with GSPE abrogates the effects of the cafeteria diet on intestinal GLP-1 production and DPP4 activity.
Entity: Universitat Rovira i Virgili.
Journal publication year: 2014
First page: 1066
Last page: 1072
Journal volume: 62
Repositori URV