Fructose Consumption Affects Glucocorticoid Signaling in the Liver of Young Female Rats.
Détails
Télécharger: 33198224_BIB_9B151A78EC5E.pdf (2578.24 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_9B151A78EC5E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Fructose Consumption Affects Glucocorticoid Signaling in the Liver of Young Female Rats.
Périodique
Nutrients
ISSN
2072-6643 (Electronic)
ISSN-L
2072-6643
Statut éditorial
Publié
Date de publication
12/11/2020
Peer-reviewed
Oui
Volume
12
Numéro
11
Pages
E3470
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: epublish
Publication Status: epublish
Résumé
The effects of early-life fructose consumption on hepatic signaling pathways and their relation to the development of metabolic disorders in later life are not fully understood. To investigate whether fructose overconsumption at a young age induces alterations in glucocorticoid signaling that might contribute to development of metabolic disturbances, we analysed glucocorticoid receptor hormone-binding parameters and expression of its target genes involved in gluconeogenesis (phosphoenolpyruvate carboxykinase and glucose-6-phosphatase) and lipid metabolism (lipin-1), as well as redox and inflammatory status in the liver of female rats subjected to a fructose-rich diet immediately after weaning. The fructose diet increased hepatic corticosterone concentration, 11β-hydroxysteroid dehydrogenase type 1 level, glucocorticoid receptor protein level and hormone-binding activity, as well as lipin-1 level. The expression of glucose-6-phosphatase was reduced in fructose-fed rats, while phosphoenolpyruvate carboxykinase remained unaltered. The fructose-rich diet increased the level of fructose transporter GLUT2, while the expression of fructolytic enzymes fructokinase and aldolase B remained unaltered. The diet also affected pro-inflammatory pathways, but had no effect on the antioxidant defence system. In conclusion, a fructose-rich diet applied immediately after weaning promoted lipogenesis and enhanced hepatic glucocorticoid signaling, possibly to protect against inflammatory damage, but without an effect on gluconeogenesis and antioxidant enzymes. Yet, prolonged treatment might ultimately lead to more pronounced metabolic disturbances.
Mots-clé
11-beta-Hydroxysteroid Dehydrogenase Type 1/metabolism, Animals, Corticosterone/metabolism, Dietary Carbohydrates/adverse effects, Female, Fructose/administration & dosage, Glucocorticoids/metabolism, Lipogenesis, Liver/metabolism, Nuclear Proteins/metabolism, Rats, Rats, Wistar, Receptors, Glucocorticoid/metabolism, Signal Transduction/drug effects, Triglycerides/blood, antioxidant enzymes, fructose-fed rat, glucocorticoid receptor, inflammation, lipin-1, lipogenesis
Pubmed
Web of science
Open Access
Oui
Création de la notice
23/11/2020 13:51
Dernière modification de la notice
08/08/2024 6:37