Consortium of Swiss Academic Libraries

Circadian rhythms and sleep—the metabolic connection

Albrecht, Urs

In: Pflügers Archiv - European Journal of Physiology, 2012, vol. 463, no. 1, p. 23-30

Université de Fribourg

Circadian rhythms and sleep—the metabolic connection

Albrecht, Urs

In: Pflügers Archiv European Journal of Physiology, 2011, p. -

The circadian system coordinates mammalian physiology and behavior with the environmental light–dark cycle. It allocates sleep to the inactivity phase using various mechanisms involving neurotransmitters, nuclear receptors, and protein kinases. These pathways are related to metabolism, indicating that the circadian system and sleep are connected via metabolic parameters. This suggests that...

Université de Fribourg

Lack of Calbindin-D28k alters response of the murine circadian clock to light

Stadler, Frédéric ; Schmutz, Isabelle ; Schwaller, Beat ; Albrecht, Urs

In: Chronobiology International, 2010, vol. 27, no. 1, p. 68-82

A strong stimulus adjusting the circadian clock to the prevailing light-dark cycle is light. However, the circadian clock is reset by light only at specific times of the day. The mechanisms mediating such gating of light input to the CNS are not well understood. There is evidence that Ca²⁺ ions play an important role in intracellular signaling mechanisms, including signaling cascades...

Université de Fribourg

Forebrain oscillators ticking with different clock hands

Feillet, Céline A. ; Mendoza, Jorge ; Albrecht, Urs ; Pévet, Paul ; Challet, Etienne

In: Molecular and Cellular Neuroscience, 2008, vol. 37, no. 2, p. 209-221

Clock proteins like PER1 and PER2 are expressed in the brain, but little is known about their functionality outside the main suprachiasmatic clock. Here we show that PER1 and PER2 were neither uniformly present nor identically phased in forebrain structures of mice fed ad libitum. Altered expression of the clock gene Cry1 was observed in respective Per1 or Per2 mutants. In response to hypocaloric...