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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

Brain catecholamine depletion and motor impairment in a Th knock-in mouse with type B tyrosine hydroxylase deficiency

Korner, Germaine ; Noain, Daniela ; Ying, Ming ; Hole, Magnus ; Flydal, Marte I. ; Scherer, Tanja ; Allegri, Gabriella ; Rassi, Anahita ; Fingerhut, Ralph ; Becu-Villalobos, Damasia ; Pillai, Samyuktha ; Wueest, Stephan ; Konrad, Daniel ; Lauber-Biason, Anna ; Baumann, Christian R. ; Bindoff, Laurence A. ; Martinez, Aurora ; Thöny, Beat

In: Brain, 2015, vol. 138, no. 10, p. 2948-2963

Tyrosine hydroxylase catalyses the hydroxylation of L-tyrosine to l-DOPA, the rate- limiting step in the synthesis of catecholamines. Mutations in the TH gene encoding tyrosine hydroxylase are associated with the autosomal recessive disorder tyrosine hydroxylase deficiency, which manifests phenotypes varying from infantile parkinsonism and DOPA-responsive dystonia, also termed type A, to...

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

The circadian clock and mood-related behavior : addendum to Hampp G. et al., Regulation of monoamine oxidase a by circadian-clock components implies clock influence on mood. Curr Biol 18:678–83, 2008.

Hampp, Gabriele ; Albrecht, Urs

In: Communicative & Integrative Biology, 2008, vol. 1, no. 1, p. 1-3

Over many years evidence accumulated that circadian rhythms are related to psychiatric disorders.1-3 However, a mechanistic relationship between the circadian clock and mood related behaviors remained enigmatic. Now, we have reported that monoamine oxidase A (MAOA), a mitochondrial enzyme degrading catecholamines including dopamine, is regulated by components of the circadian clock .4...

Université de Fribourg

Alpha-synuclein in the nucleus accumbens induces changes in cocaine behaviour in rats

Boyer, Frederic ; Dreyer, Jean-Luc

In: European Journal of Neuroscience, 2007, vol. 26, no. 10, p. 2764-2776

The mesolimbic dopaminergic system is widely recognized to be critical to the neurobiology of cocaine reward and addiction. The neuronal protein, α-synuclein, is an important regulator in dopaminergic transmission. It interacts with the dopamine transporter, and regulates dopaminergic content, neurotransmission and synaptic strength of dopaminergic neurons. Alpha-synuclein levels are elevated in...

Université de Fribourg

β-Adrenergic control of stearoyl-CoA desaturase 1 repression in relation to sympathoadrenal regulation of thermogenesis

Mainieri, Davide ; Montani, Jean-Pierre ; Seydoux, Josiane ; Giacobino, J. P. ; Boss, O. ; Dulloo, Abdul G.

In: International Journal of Obesity, 2007, vol. 31, no. 2, p. 378–381

Mice lacking β-adrenoceptors, which mediate the thermogenic effects of norepinephrine and epinephrine, show diminished thermogenesis and high susceptibility to obesity, whereas mice lacking stearoyl-CoA desaturase 1 (SCD1), which catalyzes the synthesis of monounsaturated fatty acids, show enhanced thermogenesis and high resistance to obesity. In testing whether β-adrenergic...

Université de Fribourg

Adaptive thermogenesis and uncoupling proteins: a reappraisal of their roles in fat metabolism and energy balance

Dulloo, Abdul G. ; Seydoux, Josiane ; Jacquet, Jean

In: Physiology & Behavior, 2004, vol. 83, no. 4, p. 587-602

After decades of controversies about the quantitative importance of autoregulatory adjustments in energy expenditure in weight regulation, there is now increasing recognition that even subtle variations in thermogenesis could, in dynamic systems and over the long term, be important in determining weight maintenance in some and obesity in others. The main challenge nowadays is to provide a...

Université de Fribourg

CD81-induced behavioural changes during chronic cocaine administration: in vivo gene delivery with regulatable lentivirus

Bahi, Amine ; Boyer, Frederic ; Kafri, Tal ; Dreyer, Jean-Luc

In: European Journal of Neuroscience, 2004, vol. 19, p. 1621-1633

CD81, a tetraspanin transmembrane protein involved in cell adhesion, is up-regulated in the mesolimbic dopaminergic pathway 24 h following acute administration of high doses of cocaine [Brenz-Verca et al., (2001) Mol. Cell. Neurosci., 17, 303-316]. Further evidence consecutive with this observation and based on microarray analysis are presented here. In addition, a regulatable lentivirus was...