Somin Lee, Sarita S Deshpande, Edward M Merricks, Emily Schlafly, Robert Goodman, Guy M McKhann, Emad N Eskandar, Joseph R Madsen, Sydney S Cash, Michel J A M van Putten, Catherine A Schevon, Wim van Drongelen
The electrographic manifestation of neural activity can reflect the relationship between the faster action potentials of individual neurons and the slower fluctuations of the local field potential (LFP). This relationship is typically examined in the temporal domain using the spike-triggered average. In this study, we add a spatial component to this relationship. Here we first derive a theoretical model of the spike-LFP relationship across a macroelectrode. This mathematical derivation showed a special symmetry in the spike-LFP relationship wherein a sinc function in the temporal domain predicts a sinc function in the spatial domain...
March 25, 2023: Communications Biology
Tatsuo Mori, Masamune Sakamoto, Takahiro Tayama, Aya Goji, Yoshihiro Toda, Atsushi Fujita, Takeshi Mizuguchi, Maki Urushihara, Naomichi Matsumoto
INTRODUCTION: Epilepsy with myoclonic atonic seizures (EMAtS) was previously thought to occur in normally developing children. We report a female case of EMAtS and mild developmental delay before onset. Importantly, a de novo balanced chromosomal translocation was recognized in the patient. CASE PRESENTATION: The patient was a 4-year-old girl. Mild developmental delay was observed during infancy. At the age of one and a half years, she developed atonic seizures once a month...
March 23, 2023: Brain & Development
Josue D Ordaz, Ramana Vishnubhotla, Anthony Alfonso, Hailey Budnick, Qiuting Wen, Rupa Radhakrishnan, Jeffrey Raskin
OBJECTIVE: Open corpus callosotomy (CC) poses a higher risk of perioperative morbidity than MR-guided laser interstitial thermal therapy (MRgLITT) for treatment of drop and generalized seizures without documented superiority. We present a single-institution comparison between open and MRgLITT corpus callosotomy. METHODS: A two-year retrospective review was performed on patients who underwent Open and MRgLITT CC (January 2019-January 2021). Demographics, surgical outcome data, hospital costs and interhemispheric connectivity with diffusion tensor imaging (DTI) were compared...
March 23, 2023: World Neurosurgery
Bryanna R Gristina, Rennie J Waldron, Julie A Nettifee, Karen R Muñana
OBJECTIVE: To investigate caregivers' assessments of outcome in dogs with idiopathic epilepsy (IE) administered levetiracetam (LEV), zonisamide (ZNS), or phenobarbital (PB) monotherapy. ANIMALS: 100 dogs with IE administered LEV (n = 34), ZNS (31), or PB (35) monotherapy between January 1, 2003, and February 6, 2019, and survey responses from their caregivers. PROCEDURES: Information on duration of therapy, adverse effects (AEs), and outcome was obtained from medical record review and caregiver questionnaire...
March 23, 2023: Journal of the American Veterinary Medical Association
Davide Norata, Serena Broggi, Lara Alvisi, Simona Lattanzi, Francesco Brigo, Paolo Tinuper
The electroencephalogram (EEG) is one of the most useful technologies for brain research and clinical neurology, characterized by non-invasiveness and high time resolution. The acquired traces are visibly displayed, but various studies investigate the translation of brain waves in sound (i.e., a process called sonification). Several articles have been published since 1934 about the sonification of EEG traces, in the attempt to identify the "brain-sound." However, for a long time this sonification technique was not used for clinical purposes...
March 15, 2023: Seizure: the Journal of the British Epilepsy Association
Michelle Kregel, Natalie Evans, Bonnie Wooten, Craig Campbell, Sandrine de Ribaupierre, Andrea Andrade
BACKGROUND & RATIONALE: The process to evaluate candidacy for epilepsy surgery is lengthy and stressful for caregivers, therefore the decision can be challenging. There is not a lot of information in regard to how families of a child living with epilepsy navigate the stressful decision during surgical candidacy evaluation. With difficult decisions comes the possibility of increased decisional conflict in both the child and the family. METHODS: A project designed to provide greater knowledge to the family was conducted utilizing the shared decision-making (SDM) process to assist families in the decision-making during surgical candidacy evaluation; this was done using a decision coach, who is an unbiased health care professional, providing families with evidence-based information and support tools while supporting them in making decisions based on their values...
February 24, 2023: Pediatric Neurology
Thinley Dorji, Yangchen, Shacha Wangmo, Karma Tenzin, Sonam Jamtsho, Dechen Pema, Bikram Chhetri, Damber Kumar Nirola, Guru Prasad Dhakal
Epilepsy is an important cause of morbidity and mortality especially in low- and middle-income countries. People with epilepsy (PWE) face difficulties in access to healthcare, appropriate diagnostic tests and anti-seizure medications (ASM). Bhutan is one such country in the Himalayas that has reported doubling of the prevalence of epilepsy from 155.7 per 100,000 population in 2017 to 312.4 in 2021. The country has one centre for electroencephalography and magnetic resonance imaging for a population of 0.7 million and does not have any neurologists as of 2023...
March 16, 2023: Epilepsy Research
William A Schraegle, Rebecca F Slomowitz, Carson Gundlach, David A Hsu, Dace N Almane, Carl E Stafstrom, Michael Seidenberg, Jana E Jones, Bruce P Hermann
OBJECTIVE: To characterize the relationship between neighborhood disadvantage on cognitive function as well as clinical, sociodemographic, and family factors in children with new onset idiopathic epilepsy and healthy controls. METHODS: Research participants were 288 children aged 8-18 years with recent onset epilepsy (CWE, n = 182; mean age = 12.2 <mml:math xmlns:mml=""><mml:mo>±</mml:mo></mml:math> 3...
March 25, 2023: Epilepsia
Sidonie Sauvageot, Julien Boetto, Hugues Duffau
OBJECTIVE: Surgery for giant diffuse lower-grade gliomas (LGGs) is challenging, and very few data have been reported on this topic in the literature. In this article, the authors investigated surgical, functional, and oncological aspects in patients who underwent awake resection for large LGGs with a volume > 100 cm3. METHODS: The authors retrospectively reviewed a consecutive cohort of patients who underwent surgery in an awake condition for an LGG (WHO grade 2 with possible foci of grade 3 transformation) with a volume > 100 cm3...
March 24, 2023: Journal of Neurosurgery
Zhen Liang, Lingmin Zhao, Yingyue Lou, Songyan Liu
BACKGROUND: Previous studies have reported inconsistent results on the association between circulating lipids and lipid-lowering drugs with the risk of epilepsy. OBJECTIVE: To assess whether genetically predicted circulating lipids and lipid-lowering drugs are causally associated with the risk of epilepsy outcome. METHODS: We performed a two-sample Mendelian Randomization (MR) analysis model to genetically predict the causal effects of circulating lipids (Apolipoprotein A [APOA] Apolipoprotein B [APOB], Cholesterol, High density lipoprotein cholesterol [HDL-C], Low density lipoprotein cholesterol [LDL-C], Lipoprotein A, Triglycerides) and lipid-lowering drugs (HMG-CoA reductase [HMGCR] and Proprotein Convertase Subtilisin/Kexin Type 9 [PCSK9] inhibitors) on epilepsy...
March 25, 2023: QJM: Monthly Journal of the Association of Physicians
Megan Boucher-Routhier, Jean-Philippe Thivierge
BACKGROUND: In the cerebral cortex, disinhibited activity is characterized by propagating waves that spread across neural tissue. In this pathological state, a widely reported form of activity are spiral waves that travel in a circular pattern around a fixed spatial locus termed the center of mass. Spiral waves exhibit stereotypical activity and involve broad patterns of co-fluctuations, suggesting that they may be of lower complexity than healthy activity. RESULTS: To evaluate this hypothesis, we performed dense multi-electrode recordings of cortical networks where disinhibition was induced by perfusing a pro-epileptiform solution containing 4-Aminopyridine as well as increased potassium and decreased magnesium...
March 24, 2023: BMC Neuroscience
Elanagan Nagarajan, Timothy M Lynch, Bridget Frawley, Marjorie E Bunch
OBJECTIVE: To evaluate the tolerability of clobazam in patients with drug-resistant epilepsy aged 50 years and older. METHODS: We performed a single center, retrospective chart review of patients at least 50 years of age with drug resistant epilepsy of any type who started clobazam as an add on therapy. Retention rate, safety, and tolerability at 6 and 12 months and last follow-up, and the discontinuation rate due to side effects were analyzed. RESULTS: A total of 26 patients met inclusion criteria...
March 25, 2023: Neurological Sciences
Jaiprakash Sharma, Shalaka Mulherkar, Uan-I Chen, Yan Xiong, Lakshya Bajaj, Byoung-Kyu Cho, Young Ah Goo, Hon-Chiu Eastwood Leung, Kimberley F Tolias, Marco Sardiello
Calpains are a class of non-lysosomal cysteine proteases that exert their regulatory functions via limited proteolysis of their substrates. Similar to the lysosomal and proteasomal systems, calpain dysregulation is implicated in the pathogenesis of neurodegenerative disease and cancer. Despite intensive efforts placed on the identification of mechanisms that regulate calpains, however, calpain protein modifications that regulate calpain activity are incompletely understood. Here we show that calpains are regulated by KCTD7, a cytosolic protein of previously uncharacterized function whose pathogenic mutations result in epilepsy, progressive ataxia, and severe neurocognitive deterioration...
March 24, 2023: Cell Discovery
Gabriel Davis Jones, Symon M Kariuki, Anthony K Ngugi, Angelina Kakooza Mwesige, Honorati Masanja, Seth Owusu-Agyei, Ryan Wagner, J Helen Cross, Josemir W Sander, Charles R Newton, Arjune Sen
BACKGROUND: Identification of convulsive epilepsy in sub-Saharan Africa relies on access to resources that are often unavailable. Infrastructure and resource requirements can further complicate case verification. Using machine-learning techniques, we have developed and tested a region-specific questionnaire panel and predictive model to identify people who have had a convulsive seizure. These findings have been implemented into a free app for health-care workers in Kenya, Uganda, Ghana, Tanzania, and South Africa...
April 2023: The Lancet. Digital health
(no author information available yet)
No abstract text is available yet for this article.
March 24, 2023: Neurology
Mickaël Ferrand, Cédric Baumann, Olivier Aron, Jean-Pierre Vignal, Jacques Jonas, Louise Tyvaert, Sophie Colnat-Coulbois, Laurent Koessler Doctor, Louis Maillard
BACKGROUND AND OBJECTIVES: It remains unknown to what extent ictal scalp EEG can accurately predict the localization of the intra-cerebral seizure onset in pre-surgical evaluation of drug resistant epilepsies. In this study, we aimed to define homogeneous ictal scalp EEG profiles (based on their first ictal abnormality) and assess their localizing value using simultaneously recorded scalp EEG and Stereo-EEG. METHODS: We retrospectively included consecutive patients with drug-resistant focal epilepsy who had simultaneous stereo-EEG and scalp EEG recordings of at least one seizure, in the epileptology unit in Nancy, France...
March 24, 2023: Neurology
Wei-En Johnny Tseng, Chun-Wei Chang, Jawl-Shan Hwang, Po-Chuan Ko, Chun-Jing Liu, Siew-Na Lim
BACKGROUND: and ObjectivesDiabetes mellitus (DM) contributes significantly to the metabolic syndrome and cardiovascular events, and it may be a comorbidity of epilepsy. The objective of this study was to investigate whether long-term antiseizure medication (ASM) use is associated with the risk of developing type 2 diabetes.MethodsWe analyzed data from the Chang Gung Research Database. Patients aged ≥ 45 years who received ASM treatment from January 2001 to May 2019 were identified...
March 24, 2023: Neurology
Hui-Ju Chen, Yann-Jinn Lee, Chao-Ching Huang, Yu-Chun Yen, Yuh-Feng Lin
AIMS: To examine whether type 1 diabetes age onset correlates with epilepsy incidence. METHODS: We used type 1 diabetes longitudinal data with onset age ≤ 40 years enrolled in Taiwan National Health Insurance program to examine type 1 diabetes onset age effect on epilepsy occurrence. RESULTS: In 6,165 type 1 diabetes patients, onset age groups included 3,571 patients (58%) ≤ 18 years (childhood-onset) and 2,594 patients (42%) > 18 years (adulthood-onset)...
March 22, 2023: Diabetes Research and Clinical Practice
Jialu Mo, Jiao Hu, Xianglin Cheng
High mobility group box 1 (HMGB1) is a ubiquitous and highly conserved non-histone DNA-binding protein with different biological functions according to its subcellular localization. It is widely believed that HMGB1, which is released into the extracellular space, plays a key role in the inflammatory response. In recent years, numerous studies have shown that the development of various neurological diseases such as epilepsy, Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis (ALS), multiple sclerosis (MS), cerebrovascular disease and traumatic brain injury (TBI) are inextricably linked to inflammation...
March 22, 2023: Biomedicine & Pharmacotherapy
Alistair Wardrope, Markus Reuber
No abstract text is available yet for this article.
March 17, 2023: Seizure: the Journal of the British Epilepsy Association
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