Academic Journal

Spreading depolarization and its influence on epileptiform activity.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Spreading depolarization and its influence on epileptiform activity.
Συγγραφείς: Lévesque M; Department of Neurology & Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Quebec, Canada., Köhling R; Oscar Langendorff Institute of Physiology, University of Rostock, Rostock, Germany., Avoli M; Department of Neurology & Neurosurgery, Montreal Neurological Institute-Hospital, McGill University, Quebec, Canada.; Department of Physiology, McGill University, Quebec, Canada.
Πηγή: Epilepsia [Epilepsia] 2026 Mar; Vol. 67 (3), pp. 1078-1089. Date of Electronic Publication: 2025 Nov 08.
Τύπος έκδοσης: Journal Article; Review
Γλώσσα: English
Στοιχεία περιοδικού: Publisher: Blackwell Science Country of Publication: United States NLM ID: 2983306R Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1528-1167 (Electronic) Linking ISSN: 00139580 NLM ISO Abbreviation: Epilepsia Subsets: MEDLINE
Imprint Name(s): Publication: Malden, MA : Blackwell Science
Original Publication: Copenhagen : Munskgaard
Ιατρικοί όροι (MeSH): Epilepsy*/physiopathology , Cortical Spreading Depression*/physiology , Cortical Spreading Depression*/drug effects, Neurons/physiology ; Humans ; Animals
Περίληψη: Spreading depolarization (SD) is a transient disruption of electrographic activity that slowly propagates through the gray matter by chemical contiguity, and it is characterized by a large depolarization of neurons and glial cells. SD, which is associated with massive changes in ion homeostasis, including extreme increases in [K+]o, was shown to occur in various neurological diseases such as migraine and traumatic brain injury. It is hypothesized to also occur in epilepsy. We review here the cellular and pharmacological features of SD that was mainly induced in vitro by different pharmacological manipulations as well as its relationship to focal seizures that can concomitantly occur in these in vitro and in vivo preparations. Recent experimental evidence points to SD playing a role in controlling seizure generation, but other studies have reported that SD facilitates ictogenesis. We conclude that further work is needed to firmly identify the role of SD in modulating focal seizure generation. These future experiments should also help in clearly defining the role played by SD in the manifestation of sudden unexpected death in epilepsy.
(© 2025 The Author(s). Epilepsia published by Wiley Periodicals LLC on behalf of International League Against Epilepsy.)
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Grant Information: Savoy Foundation; MOP130328 Canada CAPMC CIHR; PJT153310 Canada CAPMC CIHR; PJT166178 Canada CAPMC CIHR
Contributed Indexing: Keywords: ictogenesis; seizures; spreading depolarization; sudden unexpected death in epilepsy
Entry Date(s): Date Created: 20251108 Date Completed: 20260323 Latest Revision: 20260813
Update Code: 20260813
PubMed Central ID: PMC13007837
DOI: 10.1111/epi.70010
PMID: 41204888
Βάση Δεδομένων: MEDLINE