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Prof
University of Helsinki
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Schedule
Wednesday, December 2, 2020
4:00 PM Europe/London
Domain
NeuroscienceHost
Clinical and Experimental Epilepsy
Duration
70 minutes
KCC2, best known as the neuron-specific chloride extruder that sets the strength and polarity of GABAergic Cl-currents, is a multifunctional molecule which interacts with other ion-regulatory proteins and (structurally) with the neuronal cytoskeleton. Its multiple roles in the generation and suppression of seizures have been widely studied. In my talk, I will address some fundamental issues which are relevant in this field of research: What are EGABA shifts about? What is the role of KCC2 in shunting inhibition? What is meant by “the balance between excitation and inhibition” and, in this context, by the “NKCC1/KCC2 ratio”? Is down-regulation of KCC2 following neuronal trauma a manifestation of adaptive or maladaptive ionic plasticity? Under what conditions is K-Cl cotransport by KCC2 promoting seizures? Should we pay more attention to KCC2 as molecule involved in dendritic spine formation in brain areas such as the hippocampus? Most of these points are of potential importance also in the design of KCC2-targeting drugs and genetic manipulations aimed at combating seizures.
Kai Kaila
Prof
University of Helsinki
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