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Prof
University of Montreal
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Schedule
Wednesday, November 3, 2021
4:00 PM Europe/London
Recording provided by the organiser.
Domain
NeuroscienceHost
Clinical and Experimental Epilepsy
Duration
70 minutes
Developmental epileptic encephalopathies are early-onset epilepsies, often refractory to therapy, with developmental delay or regression. These disorders carry poor neurodevelopmental prognosis, with long-term refractory epilepsy and persistent cognitive, behavioral and motor deficits. Mutations in the CACNA1A gene, encoding the pore-forming α1 subunit of CaV2.1 voltage-gated calcium channels, result in a spectrum of neurological disorders, including severe, early-onset epileptic encephalopathies. Recent work from the Rossignol lab helped characterize the phenotypic spectrum of CACNA1A-related epilepsies in humans. Using conditional genetics and novel animal models, the Rossignol lab unveiled some of the underlying pathophysiological mechanisms, including critical deficits in cortical inhibition, resulting in seizures and a range of cognitive-behavioral deficits. Importantly, Dr. Rossignol’s team demonstrated that the targeted activation of specific GABAergic interneuron populations in selected cortical regions prevents motor seizures and reverts attention deficits and cognitive rigidity in mouse models of the disorder. These recent findings open novel avenues for the treatment of these severe CACNA1A-associated neurodevelopmental disorders.
Elsa Rossignol
Prof
University of Montreal
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