Food-anticipatory activity in Syrian hamsters: behavioral and molecular responses in the hypothalamus according to photoperiodic conditions.

Autor: Rosana F Dantas-Ferreira, Stéphanie Dumont, Sylviane Gourmelen, José Cipolla-Neto, Valérie Simonneaux, Paul Pévet, Etienne Challet

Publikováno v: PLoS ONE, Vol 10, Iss 5, p e0126519 (2015)

When food availability is restricted, animals adjust their behavior according to the timing of food access. Most rodents, such as rats and mice, and a wide number of other animals express before timed food access a bout of activity, defined as food-a

Externí odkaz: https://doaj.org/article/659be2b9c687456e92706e3aa127c584

Sleep Deprivation and Caffeine Treatment Potentiate Photic Resetting of the Master Circadian Clock in a Diurnal Rodent

Autor: Patrice Bourgin, Fanny Fuchs, Sylviane Gourmelen, Pawan Kumar Jha, Stéphanie Dumont, Etienne Challet, Yannick Goumon, Andries Kalsbeek, Hanan Bouâouda

Publikováno v: Journal of Neuroscience
Journal of Neuroscience, Society for Neuroscience, 2017, 37 (16), pp.4343-4358. ⟨10.1523/JNEUROSCI.3241-16.2017⟩
Journal of neuroscience, 37(16), 4343-4358. Society for Neuroscience
Journal of Neuroscience, 37, 4343-4358. Society for Neuroscience
Journal of Neuroscience, 2017, 37 (16), pp.4343-4358. ⟨10.1523/JNEUROSCI.3241-16.2017⟩

Circadian rhythms in nocturnal and diurnal mammals are primarily synchronized to local time by the light/dark cycle. However, nonphotic factors, such as behavioral arousal and metabolic cues, can also phase shift the master clock in the suprachiasmat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9577c3453026a9fc95715fe86ae187f
https://doi.org/10.1523/jneurosci.3241-16.2017

Aging-like circadian disturbances in folate-deficient mice

Autor: Dominique Sage-Ciocca, Madah Khawn i Muhammad Mehdi, Paul Pévet, Stéphanie Dumont, Bruno Claustrat, Etienne Challet, Tiffanie Bousser, Sylviane Gourmelen, David Hicks, Caroline Allemann

Publikováno v: Neurobiology of Aging. 34:1589-1598

The elderly population shows various circadian disturbances, including dampened amplitude of rhythmicity and decreased responsiveness to light. The common poor folate status in the elderly might account for these aging-related circadian disturbances.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5900f7b00975a8820dda8e4aded9df4a
https://doi.org/10.1016/j.neurobiolaging.2012.11.021

Short day-length increases sucrose consumption and adiposity in rats fed a high-fat diet

Autor: Beatrice Guardiola-Lemaitre, Carole Schuster-Klein, Paul Pévet, Natalia Sinitskaya, Sylviane Gourmelen, Etienne Challet

Publikováno v: Psychoneuroendocrinology. 33:1269-1278

Summary Background Photoperiod, i.e., the relative day-length per 24 h, may modulate the metabolic responses to high-fat diet (HFD) and sucrose consumption. Methods To test this hypothesis, hormonal changes, fat accretion and sucrose intake were meas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5253cf099238ccb5990ad9f7e72b0be
https://doi.org/10.1016/j.psyneuen.2008.07.003

Combined effects of high-fat feeding and circadian desynchronization

Autor: Paul Pévet, Sylviane Gourmelen, I. Bartol-Munier, Etienne Challet

Publikováno v: International Journal of Obesity and Related Metabolic Disorders
International Journal of Obesity and Related Metabolic Disorders;, 2006, 30(1), pp.60-67

OBJECTIVE: To assess whether circadian desynchronization leads to metabolic alterations capable of promoting dietary obesity and/or impairing glucose tolerance. DESIGN: Rats fed either with chow pellets (i.e., low-fat diet with 4% mass of fat) or hig

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a396cdc30e2cb2a0ed4742d81251ed45
https://doi.org/10.1038/sj.ijo.0803048