Erschienen in:
12.10.2016 | Original Contribution
A high-fat high-sucrose diet affects the long-term metabolic fate of grape proanthocyanidins in rats
verfasst von:
Eunice Molinar-Toribio, Elisabet Fuguet, Sara Ramos-Romero, Núria Taltavull, Lucía Méndez, M. Rosa Nogués, Isabel Medina, Josep Lluís Torres, Jara Pérez-Jiménez
Erschienen in:
European Journal of Nutrition
|
Ausgabe 1/2018
Einloggen, um Zugang zu erhalten
Abstract
Purpose
Polyphenol metabolites are key mediators of the biological activities of polyphenols. This study aimed to evaluate the long-term effects of a high-fat high-sucrose (HFHS) diet on the metabolism of proanthocyanidins from grape seed extract (GSE).
Methods
Adult female Wistar–Kyoto rats were fed a standard (STD) or HFHS diet supplemented or not with GSE for 16 weeks. PA metabolites were determined by targeted HPLC–MS/MS analysis.
Results
A lower concentration of total microbial-derived PA metabolites was present in urine and the aqueous fraction of faeces in the HFHS + GSE group than in the STD + GSE group. In contrast, a tendency towards the formation of conjugated (epi)catechin metabolites in the HFHS + GSE group was observed.
Conclusions
These results show that a HFHS diet significantly modifies PA metabolism, probably via: (1) a shift in microbial communities not counteracted by the polyphenols themselves; and (2) an up-regulation of hepatic enzymes.