Can Disruption of Basal Ganglia-Thalamocortical Circuit in Wilson Disease Be Associated with Juvenile Myoclonic Epilepsy Phenotype?

Autor: Rossi, Jessica, Cavallieri, Francesco, Giovannini, Giada, Benuzzi, Francesca, Ballotta, Daniela, Vaudano, Anna Elisabetta, Ferrara, Francesca, Contardi, Sara, Pietrangelo, Antonello, Corradini, Elena, Lui, Fausta, Meletti, Stefano
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Zdroj: Brain Sciences (2076-3425); May2022, Vol. 12 Issue 5, p553, 6p
Abstrakt: In this paper, we describe the multimodal MRI findings in a patient with Wilson disease and a seizure disorder, characterized by an electroclinical picture resembling juvenile myoclonic epilepsy. The brain structural MRI showed a deposition of ferromagnetic materials in the basal ganglia, with marked hypointensities in T2-weighted images of globus pallidus internus bilaterally. A resting-state fMRI study revealed increased functional connectivity in the patient, compared to control subjects, in the following networks: (1) between the primary motor cortex and several cortical regions, including the secondary somatosensory cortex and (2) between the globus pallidus and the thalamo-frontal network. These findings suggest that globus pallidus alterations, due to metal accumulation, can lead to a reduction in the normal globus pallidus inhibitory tone on the thalamo-(motor)-cortical pathway. This, in turn, can result in hyperconnectivity in the motor cortex circuitry, leading to myoclonus and tonic-clonic seizures. We suppose that, in this patient, Wilson disease generated a 'lesion model' of myoclonic epilepsy. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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