In this case study, we present evidence of resetting of brain dynamics following convulsive status epilepticus (SE) that was treated successfully with antiepileptic medications (AEDs). The measure of effective inflow (EI), a novel measure of network connectivity, was applied to the continuously recorded multichannel intracranial stereoelectroencephalographic (SEEG) signals before, during and after SE. Results from this analysis indicate trends of progressive reduction of EI over hours up to the onset of SE, mainly at sites of the epileptogenic focus with reversal of those trends upon successful treatment of SE by AEDs. The proposed analytical framework is promising for elucidation of the pathology of neuronal network dynamics that could lead to SE, evaluation of the efficacy of SE treatment strategies, as well as the development of biomarkers for susceptibility to SE.
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http://dx.doi.org/10.3389/fneur.2018.00172 | DOI Listing |
Alzheimers Dement
December 2024
University of Washington, Seattle, WA, USA.
Background: Presenilin 2 (PSEN2) is one of three deterministic risk genes that increases the risk of early-onset Alzheimer's Disease. People with PSEN2 variants have increased risk of unprovoked seizures versus age-matched unaffected individuals yet few studies have interrogated the contributions of PSEN2 on seizure susceptibility. Critically, PSEN proteolytic capacity may be a novel regulator of hippocampal kainate-type glutamate receptors (KARs), with PSEN deletion reducing KAR availability and synaptic transmission in vitro (Barthet et al 2022).
View Article and Find Full Text PDFCureus
December 2024
Department of General Medicine, Vydehi Institute of Medical Sciences and Research Centre, Bangalore, IND.
Background: The defining characteristic of posterior reversible encephalopathy syndrome (PRES) is a reversible, predominantly vasogenic edema of the white matter, particularly affecting the parenchyma supplied by the posterior circulation. PRES is most commonly associated with hypertension. We present a case series of seven normotensive patients diagnosed with cancer who had posterior reversible encephalopathy syndrome.
View Article and Find Full Text PDFInt J Emerg Med
January 2025
Department of Neurology, Tenri Hospital, Tenri, Nara, Japan.
Background: Ampicillin/sulbactam (ABPC/ SBT) is one of the most common β-lactam antibiotics for patients with status epilepticus complicated with aspiration pneumonia. It is known that β-lactam antibiotics such as penicillin aggravate epileptic seizures or status epilepticus. Here, we investigated whether ABPC/SBT aggravates seizures using electroencephalography (EEG) monitoring.
View Article and Find Full Text PDFEpilepsy Behav
December 2024
Department of Neurology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang Province, PR China; Key Laboratory of Alzheimer's Disease of Zhejiang Province, Institute of Aging, Wenzhou Medical University, Wenzhou, Zhejiang Province, PR China. Electronic address:
Introduction: We aim to identify risk factors that predict refractory convulsive status epilepticus (RCSE) and to develop a model for early recognition of patients at high risk for RCSE.
Methods: This study involved 200 patients diagnosed with convulsive status epilepticus (CSE), of whom 73 were RCSE and 127 were non-RCSE. Variables included demographic information, lifestyle factors, medical history, comorbidities, clinical symptoms, neuroimaging characteristics, laboratory tests, and nutritional scores.
Cureus
December 2024
Infectious Disease, Western Michigan University Homer Stryker M.D. School of Medicine, Kalamazoo, USA.
We discuss a case of meningitis caused by infection in a previously healthy elderly male who presented with altered mental status and new-onset seizures requiring intensive care. An open wound had served as an entry point for the infectious organism. After 25 days of treatment with meropenem, he recovered with persistent functional limitations and was discharged.
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