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Relationship Between Seizure Frequency and Functional Abnormalities in Limbic Network of Medial Temporal Lobe Epilepsy
Background: We compared resting-state functional connectivity (RSFC) among limbic and temporal lobe regions between patients with medial temporal lobe epilepsy (mTLE) and healthy control subjects to identify imaging evidence of functional networks related to seizure frequency, age of seizure onset,...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6517503/ https://www.ncbi.nlm.nih.gov/pubmed/31133978 http://dx.doi.org/10.3389/fneur.2019.00488 |
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author | Jo, Hang Joon Kenney-Jung, Daniel L. Balzekas, Irena Welker, Kirk M. Jones, David T. Croarkin, Paul E. Benarroch, Eduardo E. Worrell, Gregory A. |
author_facet | Jo, Hang Joon Kenney-Jung, Daniel L. Balzekas, Irena Welker, Kirk M. Jones, David T. Croarkin, Paul E. Benarroch, Eduardo E. Worrell, Gregory A. |
author_sort | Jo, Hang Joon |
collection | PubMed |
description | Background: We compared resting-state functional connectivity (RSFC) among limbic and temporal lobe regions between patients with medial temporal lobe epilepsy (mTLE) and healthy control subjects to identify imaging evidence of functional networks related to seizure frequency, age of seizure onset, and duration of epilepsy. Methods: Twelve patients with drug-resistant, unilateral medial temporal lobe epilepsy and 12 healthy control subjects matched for age, sex, and handedness participated in the imaging experiments. We used network-based statistics to compare functional connectivity graphs in patients with mTLE and healthy controls to investigate the relationship between functional connectivity abnormalities and seizure frequency. Results: Among mTLE patients, we found functional network abnormalities throughout the limbic system, but primarily in the hemisphere ipsilateral to the seizure focus. The RSFCs between ipsilateral hypothalamus and ventral anterior cingulate cortex and between ipsilateral subiculum and contralateral posterior cingulate cortex were highly correlated with seizure frequency. Discussion: These findings suggest that in mTLE, changes in limbic networks ipsilateral to the epileptic focus are common. The pathological changes in connectivity between cingulate cortex, hypothalamus and subiculum ipsilateral to the seizure focus were correlated with increased seizure frequency. |
format | Online Article Text |
id | pubmed-6517503 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-65175032019-05-27 Relationship Between Seizure Frequency and Functional Abnormalities in Limbic Network of Medial Temporal Lobe Epilepsy Jo, Hang Joon Kenney-Jung, Daniel L. Balzekas, Irena Welker, Kirk M. Jones, David T. Croarkin, Paul E. Benarroch, Eduardo E. Worrell, Gregory A. Front Neurol Neurology Background: We compared resting-state functional connectivity (RSFC) among limbic and temporal lobe regions between patients with medial temporal lobe epilepsy (mTLE) and healthy control subjects to identify imaging evidence of functional networks related to seizure frequency, age of seizure onset, and duration of epilepsy. Methods: Twelve patients with drug-resistant, unilateral medial temporal lobe epilepsy and 12 healthy control subjects matched for age, sex, and handedness participated in the imaging experiments. We used network-based statistics to compare functional connectivity graphs in patients with mTLE and healthy controls to investigate the relationship between functional connectivity abnormalities and seizure frequency. Results: Among mTLE patients, we found functional network abnormalities throughout the limbic system, but primarily in the hemisphere ipsilateral to the seizure focus. The RSFCs between ipsilateral hypothalamus and ventral anterior cingulate cortex and between ipsilateral subiculum and contralateral posterior cingulate cortex were highly correlated with seizure frequency. Discussion: These findings suggest that in mTLE, changes in limbic networks ipsilateral to the epileptic focus are common. The pathological changes in connectivity between cingulate cortex, hypothalamus and subiculum ipsilateral to the seizure focus were correlated with increased seizure frequency. Frontiers Media S.A. 2019-05-08 /pmc/articles/PMC6517503/ /pubmed/31133978 http://dx.doi.org/10.3389/fneur.2019.00488 Text en Copyright © 2019 Jo, Kenney-Jung, Balzekas, Welker, Jones, Croarkin, Benarroch and Worrell. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Neurology Jo, Hang Joon Kenney-Jung, Daniel L. Balzekas, Irena Welker, Kirk M. Jones, David T. Croarkin, Paul E. Benarroch, Eduardo E. Worrell, Gregory A. Relationship Between Seizure Frequency and Functional Abnormalities in Limbic Network of Medial Temporal Lobe Epilepsy |
title | Relationship Between Seizure Frequency and Functional Abnormalities in Limbic Network of Medial Temporal Lobe Epilepsy |
title_full | Relationship Between Seizure Frequency and Functional Abnormalities in Limbic Network of Medial Temporal Lobe Epilepsy |
title_fullStr | Relationship Between Seizure Frequency and Functional Abnormalities in Limbic Network of Medial Temporal Lobe Epilepsy |
title_full_unstemmed | Relationship Between Seizure Frequency and Functional Abnormalities in Limbic Network of Medial Temporal Lobe Epilepsy |
title_short | Relationship Between Seizure Frequency and Functional Abnormalities in Limbic Network of Medial Temporal Lobe Epilepsy |
title_sort | relationship between seizure frequency and functional abnormalities in limbic network of medial temporal lobe epilepsy |
topic | Neurology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6517503/ https://www.ncbi.nlm.nih.gov/pubmed/31133978 http://dx.doi.org/10.3389/fneur.2019.00488 |
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