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Université de Fribourg

The orbitofrontal cortex projects to the parvafox nucleus of the ventrolateral hypothalamus and to its targets in the ventromedial periaqueductal grey matter

Babalian, Alexandre ; Eichenberger, Simone ; Bilella, Alessandro ; Girard, Franck ; Szabolcsi, Viktoria ; Roccaro, Diana ; Alvarez-Bolado, Gonzalo ; Xu, Chun ; Celio, Marco R.

In: Brain Structure and Function, 2019, vol. 224, no. 1, p. 293–314

Although connections between the orbitofrontal cortex (OFC)—the seat of high cognitive functions—the lateral hypothalamus and the periaqueductal grey (PAG) have been recognized in the past, the precise targets of the descending fibres have not been identified. In the present study, viral tracer-transport experiments revealed neurons of the lateral (LO) and the ventrolateral (VLO) OFC...

Consortium of Swiss Academic Libraries

Assessment of errors caused by X-ray scatter and use of contrast medium when using CT-based attenuation correction in PET

Ay, Mohammad ; Zaidi, Habib

In: European Journal of Nuclear Medicine and Molecular Imaging, 2006, vol. 33, no. 11, p. 1301-1313

Université de Fribourg

Distinct spatiotemporal patterns for disease duration and stage in Parkinson’s disease

Badoud, Simon ; Nicastro, Nicolas ; Garibotto, Valentina ; Burkhard, Pierre R. ; Haller, Sven

In: European Journal of Nuclear Medicine and Molecular Imaging, 2016, vol. 43, no. 3, p. 509–516

Purpose: To assess correlations between the degree of dopaminergic depletion measured using single-photon emission computed tomography (SPECT) and different clinical parameters of disease progression in Parkinson’s disease (PD).Methods: This retrospective study included 970 consecutive patients undergoing ¹²³I-ioflupane SPECT scans in our institution between 2003 and 2013, from which we...

Université de Fribourg

Social withdrawal and gambling-like profile after lentiviral manipulation of DAT expression in the rat accumbens

Adriani, Walter ; Boyer, Frederic ; Leo, Damiana ; Canese, Rossella ; Podo, Franca ; Perrone-Capano, Carla ; Dreyer, Jean-Luc ; Laviola, Giovanni

In: The International Journal of Neuropsychopharmacology, 2010, p. -

Dysfunction of brain dopamine transporter (DAT) has been associated with sensation seeking and impulse-control disorders. We recently generated a new animal model by stereotaxical inoculation of lentiviral vectors, which allowed localized intra-accumbal delivery of modulators for DAT gene: GFP (green fluorescent protein) control, silencers (Sil), a regulatable enhancer (DAT+), or both (DAT+Sil)....

Université de Fribourg

Increased impulsive behavior and risk proneness following lentivirus-mediated dopamine transporter over-expression in rats' nucleus accumbens

Adriani, W. ; Boyer, Frederic ; Gioiosa, L. ; Macrì, S. ; Dreyer, Jean-Luc ; Laviola, G.

In: Neuroscience, 2009, vol. 159, no. 1, p. 47-58

Multiple theories have been proposed for sensation seeking and vulnerability to impulse-control disorders [Zuckerman M, Kuhlman DM (2000) Personality and risk-taking: Common biosocial factors. J Pers 68:999–1029], and many of these rely on a dopamine system deficit. Available animal models reproduce only some behavioral symptoms and seem devoid of construct validity. We used lentivirus tools...

Université de Fribourg

Overexpression of plasminogen activators in the nucleus accumbens enhances cocaine-, amphetamine- and morphine-induced reward and behavioral sensitization

Bahi, Amine ; Dreyer, Jean-Luc

In: Genes, Brain and Behavior, 2008, vol. 7, no. 2, p. 244 - 256

Urokinase-type plasminogen activator (uPA) and tissue-type plasminogen activator (tPA) are extracellular proteases that play a role in synaptic plasticity and remodeling. Psychostimulants induce both tPA and uPA in acute and chronic drug delivery, but cocaine induces preferentially uPA, whereas morphine and amphetamine induce preferentially tPA. Specific doxycline-regulatable lentiviruses...