Fructose Consumption Affects Glucocorticoid Signaling in the Liver of Young Female Rats.

Details

Serval ID
serval:BIB_9B151A78EC5E
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Fructose Consumption Affects Glucocorticoid Signaling in the Liver of Young Female Rats.
Journal
Nutrients
Author(s)
Elaković I., Kovačević S., Vojnović Milutinović D., Nikolić-Kokić A., Glban A.M., Spasić M., Tappy L., Djordjevic A., Matić G., Brkljačić J.
ISSN
2072-6643 (Electronic)
ISSN-L
2072-6643
Publication state
Published
Issued date
12/11/2020
Peer-reviewed
Oui
Volume
12
Number
11
Pages
E3470
Language
english
Notes
Publication types: Journal Article
Publication Status: epublish
Abstract
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.
Keywords
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
Yes
Create date
23/11/2020 14:51
Last modification date
16/04/2024 7:12
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