Titre :

Physical activity: benefit or weakness in metabolic adaptations in a mouse model of chronic food restriction?

Auteur(s) :

Méquinion, Mathieu [Auteur]
Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U837 [JPArc]
Caron, Emilie [Auteur]
Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U837 [JPArc]
Zgheib, Sara [Auteur]
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Stievenard, Aliçia [Auteur]
Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U837 [JPArc]
Zizzari, Philippe [Auteur]
Centre de Psychiatrie et Neurosciences [U894]
Tolle, Virginie [Auteur]
Centre de Psychiatrie et Neurosciences [U894]
Cortet, Bernard [Auteur]
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Lucas, Stephanie [Auteur]
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Université du Littoral Côte d'Opale [ULCO]
Prevot, Vincent [Auteur]
Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U837 [JPArc]
Chauveau, Christophe [Auteur]
Marrow Adiposity & Bone Lab - Adiposité Médullaire et Os - ULR 4490 [MABLab]
Université du Littoral Côte d'Opale [ULCO]
Viltart, Odile [Auteur]
Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U837 [JPArc]

Titre de la revue :

AJP - Endocrinology and Metabolism
American Journal of Physiology - Endocrinology and Metabolism

Pagination :

E241-E255

Éditeur :

American Physiological Society

Date de publication :

2015-02-01

ISSN :

0193-1849

Mot(s)-clé(s) en anglais :

Adaptation
Physiological
Animals
Anorexia Nervosa
Energy Metabolism
Female
Food Deprivation
Mice
Inbred C57BL
Models
Animal
Motor Activity
Physical Conditioning
Reproduction
Running
Time Factors
Weight Loss
animal model
anorexia nervosa
food restriction
physical activity
physiological adaptation

Discipline(s) HAL :

Sciences cognitives

Résumé en anglais : [en]

In restrictive-type anorexia nervosa (AN) patients, physical activity is usually associated with food restriction, but its physiological consequences remain poorly characterized. In female mice, we evaluated the impact of ...
Lire la suite >In restrictive-type anorexia nervosa (AN) patients, physical activity is usually associated with food restriction, but its physiological consequences remain poorly characterized. In female mice, we evaluated the impact of voluntary physical activity with/without chronic food restriction on metabolic and endocrine parameters that might contribute to AN. In this protocol, FRW mice (i.e., food restriction with running wheel) reached a crucial point of body weight loss (especially fat mass) faster than FR mice (i.e., food restriction only). However, in contrast to FR mice, their body weight stabilized, demonstrating a protective effect of a moderate, regular physical activity. Exercise delayed meal initiation and duration. FRW mice displayed food anticipatory activity compared with FR mice, which was strongly diminished with the prolongation of the protocol. The long-term nature of the protocol enabled assessment of bone parameters similar to those observed in AN patients. Both restricted groups adapted their energy metabolism differentially in the short and long term, with less fat oxidation in FRW mice and a preferential use of glucose to compensate for the chronic energy imbalance. Finally, like restrictive AN patients, FRW mice exhibited low leptin levels, high plasma concentrations of corticosterone and ghrelin, and a disruption of the estrous cycle. In conclusion, our model suggests that physical activity has beneficial effects on the adaptation to the severe condition of food restriction despite the absence of any protective effect on lean and bone mass.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

• Marrow Adiposity & Bone Lab (MABLab) - ULR 4490

Source :

Harvested from HAL