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The objective of this study was to validate a novel assay using the volumetric absorptive microsampling (VAMS) technique combined with liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) for the determination of the antiseizure medication perampanel in saliva and its clinical applicability in patients with epilepsy. VAMS tips were loaded with 30 μL of saliva and dried for 60 min. Analytes were extracted with methanol. The supernatant was evaporated under a gentle stream of nitrogen and reconstituted with 60 μL of methanol. Separation and quantification were achieved on a monolithic column connected to a mass spectrometer. Calibration curves were linear between 0.5 and 300 ng/mL. Intra- and inter-day accuracy was within 85.6-103.2% and intra-day and inter-day precision did not exceed 12.1%. Perampanel was stable in samples collected by VAMS and stored under different storage conditions. The VAMS-LC-MS/MS method was validated according to internationally accepted criteria and tested in patients with epilepsy who were receiving a combination of perampanel and other antiseizure medications. The method showed adequate bioanalytical performances, holding great potential as an alternative strategy to support domiciliary TDM in patients with epilepsy treated with perampanel according to the simplicity of sample collection.
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http://dx.doi.org/10.3390/pharmaceutics15082030 | DOI Listing |
Neurol Med Chir (Tokyo)
September 2025
Department of Neurosurgery, Institute of Medicine, University of Tsukuba.
Early postoperative seizures, defined as occurring within 7 days after surgery, are a significant complication that occurs following neurosurgical procedures involving cerebral manipulation. As a result, short-term antiseizure medication is typically administered in Japan despite the lack of consensus regarding its prophylactic use. Perampanel hydrate, an α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor antagonist, was recently introduced in an intravenous formulation in Japan, providing new potential for early postoperative seizures prevention during the perioperative period.
View Article and Find Full Text PDFNeurochirurgie
September 2025
Necker Hospital, Departments of Pediatric Neurosurgery, Radiology, Pediatric Neurology and Anesthesiology; Reference Center for Rare Epilepsies CRéER, Member of ERN Epicare; APHP, Paris, France; Université de Paris Cité, Paris, France; Institut Imagine, INSERM U1163, Paris, France; Paris Kids Can
Introduction: Laser Interstitial Thermal Therapy under MRI control has emerged as a safe and efficient alternative to microsurgery in epilepsy and neurooncology procedures. Yet it has been used only recently in seldom European centers. Here, we report our 4 years' experience with LITT in children (complications, epileptic and oncologic outcomes).
View Article and Find Full Text PDFJ Neurosci Methods
September 2025
Department of Electrical and Computer Engineering, University of Alabama at Birmingham, Birmingham, AL, USA.
Background: Cortico-cortical evoked potentials (CCEPs), elicited via single-pulse electrical stimulation, are used to map brain networks. These responses comprise early (N1) and late (N2) components, which reflect direct and indirect cortical connectivity. Reliable identification of these components remains difficult due to substantial variability in amplitude, phase, and timing.
View Article and Find Full Text PDFEpilepsy Behav
September 2025
Department of Clinical and Experimental Epilepsy, University College London, London the United Kingdom of Great Britain and Northern Ireland; MRI Unit, Chalfont Centre for Epilepsy, Bucks, the United Kingdom of Great Britain and Northern Ireland. Electronic address:
Memory functional MRI (fMRI) has been used to explore cognitive processing in people with refractory temporal lobe epilepsy (TLE) to predict memory decline after anterior temporal lobe resection (ATLR). Traditional studies employed univariate analysis (UVA), focusing on isolated voxel activity in mesial temporal regions. By contrast, multivariate pattern analysis (MVPA), examines distributed activity patterns , offering deeper insight into neural networks supporting cognitive functions.
View Article and Find Full Text PDFEpilepsy Res
August 2025
University of Colorado School of Medicine, Aurora, CO, USA.
Objectives: Responsive neurostimulation (RNS) electrocorticographic (ECoG) data may have a role in objectively assessing the efficacy of add-on antiseizure medications (ASMs). This retrospective, multicenter, observational, 24-week study is the first to report the effects of cenobamate on RNS-detected events (RDE).
Methods: Patients included adults (≥18 years) with a history of recurrent focal seizures and implanted RNS who initiated adjunctive cenobamate ≥ 3 months after RNS implant between 4/1/20-12/15/23 and who received ≥ 2 weeks of cenobamate (≥50 mg/day).