Autor segons l'article: Marine-Casado, Roger; Domenech-Coca, Cristina; del Bas, Josep Maria; Blade, Cinta; Arola, Lluis; Caimari, Antoni;
Departament: Bioquímica i Biotecnologia
Autor/s de la URV: Arola Ferrer, Luis Maria / DOMENECH COCA, CRISTINA
Paraules clau: Photoperiod Metabolic syndrome Glucose homeostasis Feeding behavior Circannual rhythms Cafeteria diet metabolic syndrome glucose homeostasis feeding behavior circannual rhythms cafeteria diet
Resum: We previously demonstrated that chronic exposure to different photoperiods induced marked variations in several glucose and lipid metabolism-related parameters in normoweight Fischer 344 (F344) rats. Here, we examined the effects of the combination of an obesogenic cafeteria diet (CAF) and the chronic exposure to three different day lengths (L12, 12 h light/day; L18, 18 h light/day; and L6, 6 h light/day) in this rat strain. Although no changes were observed during the first 4 weeks of adaptation to the different photoperiods in which animals were fed a standard diet, the addition of the CAF for the subsequent 7 weeks triggered profound physiologic and metabolic alterations in a photoperiod-dependent manner. Compared with L12 rats, both L6 and L18 animals displayed lower body weight gain and cumulative food intake in addition to decreased energy expenditure and locomotor activity. These changes were accompanied by differences in food preferences and by a sharp upregulation of the orexigenic genes Npy and Ghsr in the hypothalamus, which could be understood as a homeostatic mechanism for increasing food consumption to restore body weight control. L18 rats also exhibited higher glycemia than the L6 group, which could be partly attributed to the decreased pAkt2 levels in the soleus muscle and the downregulation of Irs1 mRNA levels in the gastrocnemius muscle. Furthermore, L6 animals displayed lower whole-body lipid utilization than the L18 group, which could be related to the lower lipid intake and to the decreased mRNA levels of the fatty acid transporter gene Fatp1 observed in the soleus muscle. The profound differences observed between L6 and L18 rats could be related with hepatic and muscular changes in the expression of circadian rhythm-related genes Cry1, Bmal1, Per2, and Nr1d1. Although further research is needed to elucidate the pathophysiologic relevance of these findings, our study could contribute to emphasize the impact of the consumption of highly palatable and energy dense foods regularly consumed by humans on the physiological and metabolic adaptations that occur in response to seasonal variations of day length, especially in diseases associated with changes in food intake and preference such as obesity and seasonal affective disorder.
Àrees temàtiques: Zootecnia / recursos pesqueiros Saúde coletiva Química Psicología Physiology (medical) Physiology Odontología Nutrição Medicina veterinaria Medicina iii Medicina ii Medicina i Interdisciplinar Farmacia Ensino Engenharias iv Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Biotecnología Astronomia / física Administração pública e de empresas, ciências contábeis e turismo
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 1664042X
Adreça de correu electrònic de l'autor: lluis.arola@urv.cat
Identificador de l'autor: 0000-0003-2767-1974
Data d'alta del registre: 2024-09-07
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Frontiers In Physiology. 9 (1639): 1639-
Referència de l'ítem segons les normes APA: Marine-Casado, Roger; Domenech-Coca, Cristina; del Bas, Josep Maria; Blade, Cinta; Arola, Lluis; Caimari, Antoni; (2018). Intake of an Obesogenic Cafeteria Diet Affects Body Weight, Feeding Behavior, and Glucose and Lipid Metabolism in a Photoperiod-Dependent Manner in F344 Rats. Frontiers In Physiology, 9(1639), 1639-. DOI: 10.3389/fphys.2018.01639
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2018
Tipus de publicació: Journal Publications
Repositori URV