The International League Against Epilepsy defines epilepsy as at least 2 unprovoked seizures more than 24 hours apart. It is a wide-reaching and complex illness affecting more than 70 million people worldwide and can take on a variety of forms, patterns, and severities. Geographic differences in the illness are often related to its etiology. A host of endemic illnesses and parasitic infections can lead to epilepsy syndromes. Management varies by region due to the availability of diagnostic modalities and medications. Treatment gaps in epilepsy care often are related to social and cultural factors that must also be understood.
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http://dx.doi.org/10.1016/j.ncl.2016.06.015 | DOI Listing |
Brain
January 2025
Department of Neurology, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou 510120, China.
Epilepsy is a network disorder, involving neural circuits at both the micro- and macroscale. While local excitatory-inhibitory imbalances are recognized as a hallmark at the microscale, the dynamic role of distinct neuron types during seizures remain poorly understood. At the macroscale, interactions between key nodes within the epileptic network, such as the central median thalamic nucleus (CMT), are critical to the, hippocampal epileptic process.
View Article and Find Full Text PDFJ Clin Invest
January 2025
Department of Pharmacology, University of Michigan Medical School, Ann Arbor, United States of America.
Dravet syndrome (DS) is a developmental and epileptic encephalopathy (DEE) that begins in the first year of life. While most cases of DS are caused by variants in SCN1A, variants in SCN1B, encoding voltage-gated sodium channel β1 subunits, are also linked to DS or to the more severe early infantile DEE. Both disorders fall under the OMIM term DEE52.
View Article and Find Full Text PDFCell Rep
January 2025
Nash Family Department of Neuroscience, The Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA. Electronic address:
Temporal lobe epilepsy (TLE) causes pervasive and progressive memory impairments, yet the specific circuit changes that drive these deficits remain unclear. To investigate how hippocampal-entorhinal dysfunction contributes to progressive memory deficits in epilepsy, we performed simultaneous in vivo electrophysiology in the hippocampus (HPC) and medial entorhinal cortex (MEC) of control and epileptic mice 3 or 8 weeks after pilocarpine-induced status epilepticus (Pilo-SE). We found that HPC synchronization deficits (including reduced theta power, coherence, and altered interneuron spike timing) emerged within 3 weeks of Pilo-SE, aligning with early-onset, relatively subtle memory deficits.
View Article and Find Full Text PDFJ Appl Genet
January 2025
Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Koodakyar Avenue, Daneshjoo Blvd, Evin, Tehran, 1985713834, Iran.
Perrault syndrome (PS) is an extremely rare autosomal recessive condition characterized primarily by bilateral sensorineural hearing loss in both genders and primary or secondary ovarian failure in females. Neurological features such as cerebral ataxia, peripheral neuropathy, epilepsy, and intellectual disability are frequent manifestations of PS. To date, six genes have been reported to cause PS, and nearly 100 families have been identified worldwide with this syndrome.
View Article and Find Full Text PDFJ Comput Neurosci
January 2025
Paris-Saclay University, Centre National de la Recherche Scientifique (CNRS), Institute of Neuroscience (NeuroPSI), 91198, Gif sur Yvette, France.
To model the dynamics of neuron membrane excitability many models can be considered, from the most biophysically detailed to the highest level of phenomenological description. Recent works at the single neuron level have shown the importance of taking into account the evolution of slow variables such as ionic concentration. A reduction of such a model to models of the integrate-and-fire family is interesting to then go to large network models.
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