Epilepsia. Official Journal of the International League Against Epilepsy

Summary

In a prospective cohort of 534 neonates with acute symptomatic seizures, 66% had incomplete response to the initial loading dose of antiseizure medication (ASM). Treatment response did not differ by gestational age, sex, medication, or dose. The risk of incomplete response was highest for seizures due to intracranial hemorrhage and lowest for hypoxic‐ischemic encephalopathy, although the difference was not significant after adjusting for high seizure burden and therapeutic hypothermia treatment. Future trial design may test ASMs in neonates with all ...

Summary

Objective

For future artificial intelligence–based brain mapping, development of a rational and safe scoring system for a brain motor mapping algorithm using electrocorticography (ECoG score), which contains various spectral, purely intrinsic brain activities, is necessary for either before or in the absence of electrical cortical stimulation (ECS).

Methods

We evaluated 1114 electrodes of 10 consecutive focal epilepsy patients who underwent subdural electrode implantation before epilepsy surgery at Kyoto University Hospital during 2011‐2017. Data from ECoG‐based mapping (bandpass filter of 0.016‐300/600 Hz) to define the ...

Summary

Ketamine is currently being used as an anesthetic/antiepileptic drug in refractory status epilepticus. To validate its use, 2 clinical trials are recruiting patients. However, preclinical studies of its use in chemically induced status epilepticus in rodents have shown that it is remarkably neuroprotective, through N‐methyl‐d‐aspartate–receptor blockade, even when given after the onset of status epilepticus. Human studies have shown that status epilepticus–induced brain damage can be caused by a glutamate analogue and that it occurs in the same brain regions ...

Summary

Objective

Viral encephalitis increases the risk for developing seizures and epilepsy. Indoleamine 2,3‐dioxygenase 1 (Ido1) is induced by inflammatory cytokines and functions to metabolize tryptophan to kynurenine. Kynurenine can be further metabolized to produce kynurenic acid and the N‐methyl‐d‐aspartate receptor agonist quinolinic acid (QuinA). In the present study, we sought to determine the role of Ido1 in promoting seizures in an animal model of viral encephalitis.

Methods

C57BL/6J and Ido1 knockout mice (Ido1‐KO) were infected with Theiler’s murine encephalomyelitis virus (TMEV). Quantitative real‐time ...

Summary

We investigated the effect of electrical stimulation of the medial pulvinar (PuM) in terms of its effect on temporal lobe seizures. Eight patients with drug‐resistant temporal lobe epilepsy undergoing stereoelectroencephalographic exploration were included. All had at least one electrode exploring the PuM. High‐frequency (50 Hz) stimulations of the PuM were well tolerated in the majority of them. During diagnostic stimulation to confirm the epileptogenic zone, 19 seizures were triggered by stimulating the hippocampus. During some of these seizures, ipsilateral pulvinar ...

Summary

Objective

Severe periictal respiratory depression is thought to be linked to risk of sudden unexpected death in epilepsy (SUDEP) but its determinants are largely unknown. Interindividual differences in the interictal ventilatory response to CO₂ (hypercapnic ventilatory response [HCVR] or central respiratory CO₂ chemosensitivity) may identify patients who are at increased risk for severe periictal hypoventilation. HCVR has not been studied previously in patients with epilepsy; therefore we evaluated a method to measure it at bedside in an epilepsy monitoring unit (EMU) ...

Summary

Objective

Inhibition of the mammalian target of rapamycin (mTOR) pathway could be antiepileptogenic in temporal lobe epilepsy (TLE), possibly via anti‐inflammatory actions. We studied effects of the mTOR inhibitor rapamycin and the anti‐inflammatory compound curcumin—also reported to inhibit the mTOR pathway—on epileptogenesis and inflammation in an in vitro organotypic hippocampal‐entorhinal cortex slice culture model.

Methods

Brain slices containing hippocampus and entorhinal cortex were obtained from 6‐day‐old rat pups and maintained in culture for up to 3 weeks. Rapamycin or curcumin was added to the culture ...

Summary

Objective

To examine the true incidence of hemorrhage related to stereo‐electroencephalography (SEEG) procedures. To analyze risk factors associated with the presence of different types of hemorrhage in SEEG procedures.

Methods

This was a retrospective, single‐center observational study examining every SEEG implantation performed at our center from 2009 to 2017. This consisted of 549 consecutive SEEG implantations using a variety of stereotactic and imaging techniques. A hemorrhage grading system was applied by a blinded neuroradiologist to every postimplant and postexplant computed tomography (CT) scan. ...

Summary

Objective

Patients with Lennox‐Gastaut syndrome (LGS) who completed 1 of 2 randomized, double‐blind, placebo‐controlled trials of add‐on cannabidiol (CBD) (GWPCARE3, NCT02224560 or GWPCARE4, NCT02224690) were invited to enroll in an open‐label extension (OLE) study evaluating the long‐term safety and efficacy of CBD (GWPCARE5, NCT02224573). Herein we present an interim analysis of the safety, efficacy, and patient‐reported outcomes from this trial.

Methods

Patients received a pharmaceutical formulation of highly purified CBD oral solution (Epidiolex; 100 mg/mL), titrated from 2.5 to 20 mg/kg/d over a 2‐week titration ...

Summary

Objective

To assess the ability of functional MRI (fMRI) to predict postoperative language decline compared to direct cortical stimulation (DCS) in epilepsy surgery patients.

Methods

In this prospective case series, 17 patients with drug‐resistant epilepsy had intracranial monitoring and resection from 2012 to 2016 with 1‐year follow‐up. All patients completed preoperative language fMRI, mapping with DCS of subdural electrodes, pre‐ and postoperative neuropsychological testing for language function, and resection. Changes in language function before and after surgery were assessed. fMRI activation and DCS ...