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Characterization of Functional and Structural Integrity in Experimental Focal Epilepsy: Reduced Network Efficiency Coincides with White Matter Changes
BACKGROUND: Although focal epilepsies are increasingly recognized to affect multiple and remote neural systems, the underlying spatiotemporal pattern and the relationships between recurrent spontaneous seizures, global functional connectivity, and structural integrity remain largely unknown. METHODO...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3395639/ https://www.ncbi.nlm.nih.gov/pubmed/22808026 http://dx.doi.org/10.1371/journal.pone.0039078 |
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author | Otte, Willem M. Dijkhuizen, Rick M. van Meer, Maurits P. A. van der Hel, Wilhelmina S. Verlinde, Suzanne A. M. W. van Nieuwenhuizen, Onno Viergever, Max A. Stam, Cornelis J. Braun, Kees P.J. |
author_facet | Otte, Willem M. Dijkhuizen, Rick M. van Meer, Maurits P. A. van der Hel, Wilhelmina S. Verlinde, Suzanne A. M. W. van Nieuwenhuizen, Onno Viergever, Max A. Stam, Cornelis J. Braun, Kees P.J. |
author_sort | Otte, Willem M. |
collection | PubMed |
description | BACKGROUND: Although focal epilepsies are increasingly recognized to affect multiple and remote neural systems, the underlying spatiotemporal pattern and the relationships between recurrent spontaneous seizures, global functional connectivity, and structural integrity remain largely unknown. METHODOLOGY/PRINCIPAL FINDINGS: Here we utilized serial resting-state functional MRI, graph-theoretical analysis of complex brain networks and diffusion tensor imaging to characterize the evolution of global network topology, functional connectivity and structural changes in the interictal brain in relation to focal epilepsy in a rat model. Epileptic networks exhibited a more regular functional topology than controls, indicated by a significant increase in shortest path length and clustering coefficient. Interhemispheric functional connectivity in epileptic brains decreased, while intrahemispheric functional connectivity increased. Widespread reductions of fractional anisotropy were found in white matter regions not restricted to the vicinity of the epileptic focus, including the corpus callosum. CONCLUSIONS/SIGNIFICANCE: Our longitudinal study on the pathogenesis of network dynamics in epileptic brains reveals that, despite the locality of the epileptogenic area, epileptic brains differ in their global network topology, connectivity and structural integrity from healthy brains. |
format | Online Article Text |
id | pubmed-3395639 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-33956392012-07-17 Characterization of Functional and Structural Integrity in Experimental Focal Epilepsy: Reduced Network Efficiency Coincides with White Matter Changes Otte, Willem M. Dijkhuizen, Rick M. van Meer, Maurits P. A. van der Hel, Wilhelmina S. Verlinde, Suzanne A. M. W. van Nieuwenhuizen, Onno Viergever, Max A. Stam, Cornelis J. Braun, Kees P.J. PLoS One Research Article BACKGROUND: Although focal epilepsies are increasingly recognized to affect multiple and remote neural systems, the underlying spatiotemporal pattern and the relationships between recurrent spontaneous seizures, global functional connectivity, and structural integrity remain largely unknown. METHODOLOGY/PRINCIPAL FINDINGS: Here we utilized serial resting-state functional MRI, graph-theoretical analysis of complex brain networks and diffusion tensor imaging to characterize the evolution of global network topology, functional connectivity and structural changes in the interictal brain in relation to focal epilepsy in a rat model. Epileptic networks exhibited a more regular functional topology than controls, indicated by a significant increase in shortest path length and clustering coefficient. Interhemispheric functional connectivity in epileptic brains decreased, while intrahemispheric functional connectivity increased. Widespread reductions of fractional anisotropy were found in white matter regions not restricted to the vicinity of the epileptic focus, including the corpus callosum. CONCLUSIONS/SIGNIFICANCE: Our longitudinal study on the pathogenesis of network dynamics in epileptic brains reveals that, despite the locality of the epileptogenic area, epileptic brains differ in their global network topology, connectivity and structural integrity from healthy brains. Public Library of Science 2012-07-12 /pmc/articles/PMC3395639/ /pubmed/22808026 http://dx.doi.org/10.1371/journal.pone.0039078 Text en Otte et al. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Otte, Willem M. Dijkhuizen, Rick M. van Meer, Maurits P. A. van der Hel, Wilhelmina S. Verlinde, Suzanne A. M. W. van Nieuwenhuizen, Onno Viergever, Max A. Stam, Cornelis J. Braun, Kees P.J. Characterization of Functional and Structural Integrity in Experimental Focal Epilepsy: Reduced Network Efficiency Coincides with White Matter Changes |
title | Characterization of Functional and Structural Integrity in Experimental Focal Epilepsy: Reduced Network Efficiency Coincides with White Matter Changes |
title_full | Characterization of Functional and Structural Integrity in Experimental Focal Epilepsy: Reduced Network Efficiency Coincides with White Matter Changes |
title_fullStr | Characterization of Functional and Structural Integrity in Experimental Focal Epilepsy: Reduced Network Efficiency Coincides with White Matter Changes |
title_full_unstemmed | Characterization of Functional and Structural Integrity in Experimental Focal Epilepsy: Reduced Network Efficiency Coincides with White Matter Changes |
title_short | Characterization of Functional and Structural Integrity in Experimental Focal Epilepsy: Reduced Network Efficiency Coincides with White Matter Changes |
title_sort | characterization of functional and structural integrity in experimental focal epilepsy: reduced network efficiency coincides with white matter changes |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3395639/ https://www.ncbi.nlm.nih.gov/pubmed/22808026 http://dx.doi.org/10.1371/journal.pone.0039078 |
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