Electrographic Features of Spontaneous Recurrent Seizures in a Mouse Model of Extended Hippocampal Kindling.

brain slices convulsion epilepsy ictal discharges intracranial electroencephalograph

Journal

Cerebral cortex communications
ISSN: 2632-7376
Titre abrégé: Cereb Cortex Commun
Pays: United States
ID NLM: 101767128

Informations de publication

Date de publication:
2021
Historique:
received: 16 07 2020
revised: 08 01 2021
accepted: 13 01 2021
entrez: 23 7 2021
pubmed: 24 7 2021
medline: 24 7 2021
Statut: epublish

Résumé

Epilepsy is a chronic neurological disorder characterized by spontaneous recurrent seizures (SRS) and comorbidities. Kindling through repetitive brief stimulation of a limbic structure is a commonly used model of temporal lobe epilepsy. Particularly, extended kindling over a period up to a few months can induce SRS, which may simulate slowly evolving epileptogenesis of temporal lobe epilepsy. Currently, electroencephalographic (EEG) features of SRS in rodent models of extended kindling remain to be detailed. We explored this using a mouse model of extended hippocampal kindling. Intracranial EEG recordings were made from the kindled hippocampus and unstimulated hippocampal, neocortical, piriform, entorhinal, or thalamic area in individual mice. Spontaneous EEG discharges with concurrent low-voltage fast onsets were observed from the two corresponding areas in nearly all SRS detected, irrespective of associated motor seizures. Examined in brain slices, epileptiform discharges were induced by alkaline artificial cerebrospinal fluid in the hippocampal CA3, piriform and entorhinal cortical areas of extended kindled mice but not control mice. Together, these in vivo and in vitro observations suggest that the epileptic activity involving a macroscopic network may generate concurrent discharges in forebrain areas and initiate SRS in hippocampally kindled mice.

Identifiants

pubmed: 34296153
doi: 10.1093/texcom/tgab004
pii: tgab004
pmc: PMC8152854
doi:

Types de publication

Journal Article

Langues

eng

Pagination

tgab004

Informations de copyright

© The Author(s) 2021. Published by Oxford University Press.

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Auteurs

Haiyu Liu (H)

Departments of Neurosurgery, The First Hospital of Jilin University, Changchun, Jilin 130021 China.
Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Uilki Tufa (U)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.
Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3H5, Canada.

Anya Zahra (A)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Jonathan Chow (J)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Nila Sivanenthiran (N)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Chloe Cheng (C)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Yapg Liu (Y)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Phinehas Cheung (P)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Stellar Lim (S)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Yaozhong Jin (Y)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Min Mao (M)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Yuqing Sun (Y)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Chiping Wu (C)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Richard Wennberg (R)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.
Department of Medicine, University of Toronto, Toronto, Ontario M2K 1E2, Canada.

Berj Bardakjian (B)

Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3H5, Canada.

Peter L Carlen (PL)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.
Department of Medicine, University of Toronto, Toronto, Ontario M2K 1E2, Canada.
Department of Physiology, University of Toronto, Toronto, Ontario M5S 1A8, Canada.

James H Eubanks (JH)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.
Department of Surgery, University of Toronto, Toronto, Ontario M5G 1X5, Canada.

Hongmei Song (H)

Departments of Neurosurgery, The First Hospital of Jilin University, Changchun, Jilin 130021 China.
Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.

Liang Zhang (L)

Krembil Research Institute, University Health Network, Toronto, Ontario, Canada M5T 2S8.
Department of Medicine, University of Toronto, Toronto, Ontario M2K 1E2, Canada.

Classifications MeSH