Thalamocortical circuits in generalized epilepsy: Pathophysiologic mechanisms and therapeutic targets

Generalized epilepsy affects 24 million people globally; at least 25% of cases remain medically refractory. The thalamus, with widespread connections throughout the brain, plays a critical role in generalized epilepsy. The intrinsic properties of thalamic neurons and the synaptic connections between...

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Main Authors: Britta E. Lindquist, Clare Timbie, Yuliya Voskobiynyk, Jeanne T. Paz
Format: Article
Language:English
Published: Elsevier 2023-06-01
Series:Neurobiology of Disease
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S0969996123001080
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author Britta E. Lindquist
Clare Timbie
Yuliya Voskobiynyk
Jeanne T. Paz
author_facet Britta E. Lindquist
Clare Timbie
Yuliya Voskobiynyk
Jeanne T. Paz
author_sort Britta E. Lindquist
collection DOAJ
description Generalized epilepsy affects 24 million people globally; at least 25% of cases remain medically refractory. The thalamus, with widespread connections throughout the brain, plays a critical role in generalized epilepsy. The intrinsic properties of thalamic neurons and the synaptic connections between populations of neurons in the nucleus reticularis thalami and thalamocortical relay nuclei help generate different firing patterns that influence brain states. In particular, transitions from tonic firing to highly synchronized burst firing mode in thalamic neurons can cause seizures that rapidly generalize and cause altered awareness and unconsciousness. Here, we review the most recent advances in our understanding of how thalamic activity is regulated and discuss the gaps in our understanding of the mechanisms of generalized epilepsy syndromes. Elucidating the role of the thalamus in generalized epilepsy syndromes may lead to new opportunities to better treat pharmaco-resistant generalized epilepsy by thalamic modulation and dietary therapy.
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spelling doaj.art-68b32fee18894a4b8c80335426cdcd402023-05-14T04:28:04ZengElsevierNeurobiology of Disease1095-953X2023-06-01181106094Thalamocortical circuits in generalized epilepsy: Pathophysiologic mechanisms and therapeutic targetsBritta E. Lindquist0Clare Timbie1Yuliya Voskobiynyk2Jeanne T. Paz3UCSF Department of Neurology, Division of Pediatric Epilepsy, United States of AmericaGladstone Institute of Neurological Disease, United States of America; UCSF Department of Neurology, Division of Pediatric Epilepsy, United States of AmericaGladstone Institute of Neurological Disease, United States of AmericaGladstone Institute of Neurological Disease, United States of America; Kavli Institute for Fundamental Neuroscience, UCSF, United States of America; Corresponding author at: Gladstone Institutes, 1650 Owens St, San Francisco, CA 94158, United States of America.Generalized epilepsy affects 24 million people globally; at least 25% of cases remain medically refractory. The thalamus, with widespread connections throughout the brain, plays a critical role in generalized epilepsy. The intrinsic properties of thalamic neurons and the synaptic connections between populations of neurons in the nucleus reticularis thalami and thalamocortical relay nuclei help generate different firing patterns that influence brain states. In particular, transitions from tonic firing to highly synchronized burst firing mode in thalamic neurons can cause seizures that rapidly generalize and cause altered awareness and unconsciousness. Here, we review the most recent advances in our understanding of how thalamic activity is regulated and discuss the gaps in our understanding of the mechanisms of generalized epilepsy syndromes. Elucidating the role of the thalamus in generalized epilepsy syndromes may lead to new opportunities to better treat pharmaco-resistant generalized epilepsy by thalamic modulation and dietary therapy.http://www.sciencedirect.com/science/article/pii/S0969996123001080Absence epilepsyBurst firingGeneralized spike-and-wave dischargeOscillationThalamusGenetic generalized epilepsy
spellingShingle Britta E. Lindquist
Clare Timbie
Yuliya Voskobiynyk
Jeanne T. Paz
Thalamocortical circuits in generalized epilepsy: Pathophysiologic mechanisms and therapeutic targets
Neurobiology of Disease
Absence epilepsy
Burst firing
Generalized spike-and-wave discharge
Oscillation
Thalamus
Genetic generalized epilepsy
title Thalamocortical circuits in generalized epilepsy: Pathophysiologic mechanisms and therapeutic targets
title_full Thalamocortical circuits in generalized epilepsy: Pathophysiologic mechanisms and therapeutic targets
title_fullStr Thalamocortical circuits in generalized epilepsy: Pathophysiologic mechanisms and therapeutic targets
title_full_unstemmed Thalamocortical circuits in generalized epilepsy: Pathophysiologic mechanisms and therapeutic targets
title_short Thalamocortical circuits in generalized epilepsy: Pathophysiologic mechanisms and therapeutic targets
title_sort thalamocortical circuits in generalized epilepsy pathophysiologic mechanisms and therapeutic targets
topic Absence epilepsy
Burst firing
Generalized spike-and-wave discharge
Oscillation
Thalamus
Genetic generalized epilepsy
url http://www.sciencedirect.com/science/article/pii/S0969996123001080
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AT yuliyavoskobiynyk thalamocorticalcircuitsingeneralizedepilepsypathophysiologicmechanismsandtherapeutictargets
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