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Université de Fribourg

Absence of parvalbumin increases mitochondria volume and branching of dendrites in inhibitory Pvalb neurons in vivo: a point of convergence of autism spectrum disorder (ASD) risk gene phenotypes

Janickova, Lucia ; Rechberger, Karin Farah ; Wey, Lucas ; Schwaller, Beat

In: Molecular Autism, 2020, vol. 11, no. 1, p. 47

In fast firing, parvalbumin (PV)-expressing (Pvalb) interneurons, PV acts as an intracellular Ca2+ signal modulator with slow-onset kinetics. In Purkinje cells of PV−/− mice, adaptive/homeostatic mechanisms lead to an increase in mitochondria, organelles equally capable of delayed Ca2+ sequestering/buffering. An inverse regulation of PV and mitochondria likewise operates in cell model...

Università della Svizzera italiana

CXCR7 prevents excessive CXCL12-mediated downregulation of CXCR4 in migrating cortical interneurons

Abe, Philipp ; Mueller, Wiebke ; Schütz, Dagmar ; MacKay, Fabienne ; Thelen, Marcus ; Zhang, Penglie ; Stumm, Ralf

In: Development, 2014, vol. 141, no. 9, p. 1857-1863

The CXCL12/CXCR4 signaling pathway is involved in the development of numerous neuronal and non-neuronal structures. Recent work established that the atypical second CXCL12 receptor, CXCR7, is essential for the proper migration of interneuron precursors in the developing cerebral cortex. Two CXCR7-mediated functions were proposed in this process: direct modulation of β-arrestin-mediated...

Université de Fribourg

Dysregulation of parvalbumin expression in the Cntnap2−/− mouse model of autism spectrum disorder

Lauber, Emanuel ; Filice, Federica ; Schwaller, Beat

In: Frontiers in Molecular Neuroscience, 2018, vol. 11, p. -

Due to the complex and heterogeneous etiology of autism spectrum disorder (ASD), identification of convergent pathways and/or common molecular endpoints in the pathophysiological processes of ASD development are highly needed in order to facilitate treatment approaches targeted at the core symptoms. We recently reported on decreased expression of the Ca2+-binding protein parvalbumin (PV) in...