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Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients
Published on: December 18, 2016
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Aberrant Metabolic Patterns Networks in Insular Epilepsy.
Baotian Zhao1,2, Caio Seguin3, Lin Ai4
1Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China.
Frontiers in Neurology
|January 11, 2021
Summary
Insular epilepsy disrupts brain metabolic networks, showing increased regional coupling and altered network topology. This suggests epilepsy is a systemic disorder affecting widespread brain connectivity.
Area of Science:
- Neuroscience
- Medical Imaging
- Systems Biology
Background:
- Insular epilepsy presents significant clinical challenges.
- Understanding the underlying cerebral metabolic network alterations is crucial for diagnosis and treatment.
- Interictal hypometabolism in insular epilepsy suggests network dysfunction.
Purpose of the Study:
- To map cerebral metabolic networks in insular epilepsy.
- To investigate the graph-theoretic properties of these networks.
- To elucidate altered metabolic network architectures in insular epilepsy.
Main Methods:
- Utilized 18F-fluorodeoxyglucose positron emission tomography (18F-FDG-PET) imaging.
- Analyzed metabolic covariance networks using graph theory in 17 insular epilepsy patients and 14 healthy controls.
- Estimated connection weights by correlating regionally-averaged FDG uptake values.
Main Results:
- Increased correlation in regional FDG uptake was observed in insular epilepsy patients, particularly involving the opercular cortex and subcortical structures.
- Metabolic covariance networks in epilepsy patients exhibited reduced small-worldness and altered nodal properties in the ipsilateral hemisphere.
- Brainstem structures showed less prominent metabolic alterations compared to other regions.
Conclusions:
- Insular epilepsy is characterized by a lack of normal regional metabolic heterogeneity, leading to hyper-coupled metabolic covariance networks.
- Altered topological properties and aberrant local connections in metabolic networks suggest a systemic neurological disorder.
- Widespread disruption of cerebral metabolic networks underlies insular epilepsy.
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