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https://www.readbyqxmd.com/read/29783181/autistic-traits-in-epilepsy-models-why-when-and-how
#1
REVIEW
Jana Velíšková, Jill L Silverman, Melissa Benson, Pierre-Pascal Lenck-Santini
Autism spectrum disorder (ASD) is a common comorbidity of epilepsy and seizures and/or epileptiform activity are observed in a significant proportion of ASD patients. Current research also implies that autistic traits can be observed to a various degree in mice and rats with seizures. This suggests that there are shared mechanisms in both ASD and epilepsy syndromes. Here, we first review the standard, validated methods used to assess autistic traits in animal models as well as their limitations with regards to epilepsy models...
May 18, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29782849/seizure-modulation-by-sleep-and-sleep-state
#2
Carl W Bazil
Sleep is a dynamic process, during which the electrical rhythms of the brain orchestrate a complicated progression of changing frequencies, patterns and connectivity. Each stage of sleep is different electrophysiologically from wakefulness, and from other sleep stages. It should be no surprise, then, that the various sleep states influence the origin, suppression, and spread of seizures, and that different seizure types are affected in individual (and sometimes contradictory) ways. While much of the electrical symphony that occurs in both normal and epileptic brains is incompletely understood, at the basic level some interesting and often clinically important influences of the various sleep states have been identified...
May 18, 2018: Brain Research
https://www.readbyqxmd.com/read/29782369/neuroimaging-in-epilepsy
#3
Meneka Kaur Sidhu, John S Duncan, Josemir W Sander
PURPOSE OF REVIEW: Epilepsy neuroimaging is important for detecting the seizure onset zone, predicting and preventing deficits from surgery and illuminating mechanisms of epileptogenesis. An aspiration is to integrate imaging and genetic biomarkers to enable personalized epilepsy treatments. RECENT FINDINGS: The ability to detect lesions, particularly focal cortical dysplasia and hippocampal sclerosis, is increased using ultra high-field imaging and postprocessing techniques such as automated volumetry, T2 relaxometry, voxel-based morphometry and surface-based techniques...
May 17, 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29780310/mobile-software-as-a-medical-device-samd-for-the-treatment-of-epilepsy-development-of-digital-therapeutics-comprising-behavioral-and-music-based-interventions-for-neurological-disorders
#4
Pegah Afra, Carol S Bruggers, Matthew Sweney, Lilly Fagatele, Fareeha Alavi, Michael Greenwald, Merodean Huntsman, Khanhly Nguyen, Jeremiah K Jones, David Shantz, Grzegorz Bulaj
Digital health technologies for people with epilepsy (PWE) include internet-based resources and mobile apps for seizure management. Since non-pharmacological interventions, such as listening to specific Mozart's compositions, cognitive therapy, psychosocial and educational interventions were shown to reduce epileptic seizures, these modalities can be integrated into mobile software and delivered by mobile medical apps as digital therapeutics. Herein, we describe: (1) a survey study among PWE about preferences to use mobile software for seizure control, (2) a rationale for developing digital therapies for epilepsy, (3) creation of proof-of-concept mobile software intended for use as an adjunct digital therapeutic to reduce seizures, and (4) broader applications of digital therapeutics for the treatment of epilepsy and other chronic disorders...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29779390/-prenatally-diagnosed-case-of-pallister%C3%A2-killian-syndrome
#5
Zsolt Tidrenczel, Erika P Tardy, Edina Sarkadi, Judit Simon, Artúr Beke, János Demeter
Pallister-Killian syndrome (PKS) is a rare, sporadic genetic disorder that is caused by the mosaic presence of a supernumerary marker chromosome, isochromosome 12p. The syndrome is a polydysmorphic condition characterized by mental retardation, craniofacial dysmorphism, hypotonia, seizures, epilepsy and certain organic malformations (diaphragmatic hernia, congenital heart disease). Prenatal diagnosis is challenging due to the mosaic tissue-specific distribution of the chromosomal disorder and highly variable phenotype...
May 2018: Orvosi Hetilap
https://www.readbyqxmd.com/read/29778948/bioisosteres-of-ethyl-8-ethynyl-6-pyridin-2-yl-4h-benzo-f-imidazo-1-5-a-1-4-diazepine-3-carboxylate-hz-166-as-novel-alpha-2-3-selective-potentiators-of-gaba-a-receptors-improved-bioavailability-enhances-anticonvulsant-efficacy
#6
J M Witkin, J L Smith, X Ping, S D Gleason, M M Poe, G Li, X Jin, J Hobbs, J M Schkeryantz, J S McDermott, A I Alatorre, J N Siemian, J W Cramer, D C Airey, K R Methuku, V V N P B Tiruveedhula, T M Jones, J Crawford, M J Krambis, J L Fisher, J M Cook, R Cerne
HZ-166 has previously been characterized as an α2,3-selective GABAA receptor modulator with anticonvulsant, anxiolytic, and anti-nociceptive properties but reduced motor effects. We discovered a series of ester bioisosteres with reduced metabolic liabilities, leading to improved efficacy as anxiolytic-like compounds in rats. In the present study, we evaluated the anticonvulsant effects KRM-II-81 across several rodent models. In some models we also evaluated key structural analogs. KRM-II-81 suppressed hyper-excitation in a network of cultured cortical neurons without affecting the basal neuronal activity...
May 3, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29778946/mechanisms-underlying-anticonvulsant-and-proconvulsant-actions-of-norepinephrine
#7
REVIEW
Maedeh Ghasemi, Nasrin Mehranfard
Norepinephrine (NE) has been shown to exert a potent suppressant effect on seizure development. On the other hand, several lines of evidence have shown that increased NE level is proconvulsant under certain conditions. These data suggest that variations in NE levels could affect modulatory action of noradrenergic system on seizures. Less, however, is known about the mechanisms by which adrenergic pathways protect against seizures or promote seizures. Knowing the mechanisms involved in anti- or proconvulsive effects of NE may help to the development of new therapeutic candidates for patients with refractory epilepsy...
May 11, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29778029/late-onset-childhood-neuronal-ceroid-lipofuscinosis-early-clinical-and-electroencephalographic-markers
#8
Lucas Beltrán, Gabriela Reyes Valenzuela, Mariana Loos, Rodrigo Vargas, Rafael Lizama, Pablo Spinsanti, Roberto Caraballo
PURPOSE: The objective of the study was to describe the initial clinical and electroencephalographic findings in children with late-infantile neuronal ceroid lipofuscinosis (LINCL). METHOD: The clinical charts of 35 patients seen between 1990 and 2016 were reviewed. The patients were divided into two groups: Group 1 (G1) consisting of 12 patients with NCL type 2 (CLN2) disease confirmed by enzymatic activity in dried blood spots on filter paper and/or genetic studies, and Group 2 (G2) consisting of 23 patients with a diagnosis of LINCL based on pathology studies by muscle biopsy...
May 15, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29778017/the-preconception-care-experiences-of-women-with-epilepsy-on-sodium-valproate
#9
Lorna Lawther, Helen Dolk, Marlene Sinclair, Jim Morrow
PURPOSE: To understand the preconception experiences of women with epilepsy who have been taking the teratogenic drug valproate. METHODS: Seven women were recruited, three from a preconception clinic and four from an antenatal clinic in a region of the UK. All had taken valproate preconceptionally. Three preconception clinic encounters were observed and audio-recorded. Interviews with all women were analysed using Interpretative Phenomenological Analysis (IPA). RESULTS: Women experienced a "trajectory of balance"...
May 16, 2018: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29776417/sinomenine-exerts-anticonvulsant-profile-and-neuroprotective-activity-in-pentylenetetrazole-kindled-rats-involvement-of-inhibition-of-nlrp1-inflammasome
#10
Bo Gao, Yu Wu, Yuan-Jian Yang, Wei-Zu Li, Kun Dong, Jun Zhou, Yan-Yan Yin, Da-Ke Huang, Wen-Ning Wu
BACKGROUND: Epilepsy is a common neurological disorder and is not well controlled by available antiepileptic drugs (AEDs). Inflammation is considered to be a critical factor in the pathophysiology of epilepsy. Sinomenine (SN), a bioactive alkaloid with anti-inflammatory effect, exerts neuroprotective activity in many nervous system diseases. However, little is known about the effect of SN on epilepsy. METHODS: The chronic epilepsy model was established by pentylenetetrazole (PTZ) kindling...
May 18, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29775848/long-term-outcome-in-children-with-neonatal-seizures-a-tertiary-center-experience-in-cohort-of-168-patients
#11
Biljana Vucetic Tadic, Ruzica Kravljanac, Vlada Sretenovic, Vladislav Vukomanovic
PURPOSE: The purpose of this study was to evaluate long-term outcome and assess predictors of prognosis in children with neonatal seizures (NS). METHOD: This retrospective study includes children with NS treated at our Institute from January the 1st 2005 until December the 31st 2015. The data were collected from medical charts and the electroencephalogram (EEG) database at the Institute. The predictive value was evaluated for following parameters: (1) characteristics of the patients, such as gender, gestational age, birth body weight, Apgar score, artificial ventilation; (2) etiology; (3) characteristics of seizures such as type, time of onset, resistance to treatment; and (4) EEG background activity and paroxysmal discharges...
May 15, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29775765/disconnection-surgery-for-intractable-epilepsy-with-a-structural-abnormality-in-the-medial-posterior-cortex
#12
Takeshi Matsuo, Kensuke Kawai, Kenji Ibayashi, Ichiro Shirouzu, Miki Sato
BACKGROUND: The lesionectomy is a general surgical procedure for treating focal epilepsy resulting from a structural abnormality, but some patients can not achieve favorable outcome, especially patients whose symptomatogenic zone is located in remote regions. Herein we propose the surgical disconnection of the seizure propagation pathway, which consists of short and long associating fibers linking the epileptogenic zone to the remote symptomatogenic zone, as an effective method of achieving favorable seizure outcomes in patients with posterior cortex epilepsy...
May 15, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29774009/signaling-pathways-and-cellular-mechanisms-regulating-mossy-fiber-sprouting-in-the-development-of-epilepsy
#13
REVIEW
Christin M Godale, Steve C Danzer
The sprouting of hippocampal dentate granule cell axons, termed mossy fibers, into the dentate inner molecular layer is one of the most consistent findings in tissue from patients with mesial temporal lobe epilepsy. Decades of research in animal models have revealed that mossy fiber sprouting creates de novo recurrent excitatory connections in the hippocampus, fueling speculation that the pathology may drive temporal lobe epileptogenesis. Conducting definitive experiments to test this hypothesis, however, has been challenging due to the difficulty of dissociating this sprouting from the many other changes occurring during epileptogenesis...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29771456/serum-serotonin-levels-in-patients-with-epileptic-seizures
#14
Arun Murugesan, M R Sandhya Rani, Johnson Hampson, Bilal Zonjy, Nuria Lacuey, Carl L Faingold, Daniel Friedman, Orrin Devinsky, Rup K Sainju, Stephan Schuele, Beate Diehl, Maromi Nei, Ronald M Harper, Lisa M Bateman, George Richerson, Samden D Lhatoo
Profound cardiovascular and/or respiratory dysfunction is part of the terminal cascade in sudden unexpected death in epilepsy (SUDEP). Central control of ventilation is mediated by brainstem rhythm generators, which are influenced by a variety of inputs, many of which use the modulatory neurotransmitter serotonin to mediate important inputs for breathing. The aim of this study was to investigate epileptic seizure-induced changes in serum serotonin levels and whether there are potential implications for SUDEP...
May 17, 2018: Epilepsia
https://www.readbyqxmd.com/read/29770251/review-of-the-neurological-benefits-of-phytocannabinoids
#15
REVIEW
Joseph Maroon, Jeff Bost
Background: Numerous physical, psychological, and emotional benefits have been attributed to marijuana since its first reported use in 2,600 BC in a Chinese pharmacopoeia. The phytocannabinoids, cannabidiol (CBD), and delta-9-tetrahydrocannabinol (Δ9-THC) are the most studied extracts from cannabis sativa subspecies hemp and marijuana. CBD and Δ9-THC interact uniquely with the endocannabinoid system (ECS). Through direct and indirect actions, intrinsic endocannabinoids and plant-based phytocannabinoids modulate and influence a variety of physiological systems influenced by the ECS...
2018: Surgical Neurology International
https://www.readbyqxmd.com/read/29769525/asynchronous-suppression-of-visual-cortex-during-absence-seizures-in-stargazer-mice
#16
Jochen Meyer, Atul Maheshwari, Jeffrey Noebels, Stelios Smirnakis
Absence epilepsy is a common childhood disorder featuring frequent cortical spike-wave seizures with a loss of awareness and behavior. Using the calcium indicator GCaMP6 with in vivo 2-photon cellular microscopy and simultaneous electrocorticography, we examined the collective activity profiles of individual neurons and surrounding neuropil across all layers in V1 during spike-wave seizure activity over prolonged periods in stargazer mice. We show that most (~80%) neurons in all cortical layers reduce their activity during seizures, whereas a smaller pool activates or remains neutral...
May 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29769251/systematic-review-and-network-meta-analysis-of-resective-surgery-for-mesial-temporal-lobe-epilepsy
#17
Puneet Jain, George Tomlinson, Carter Snead, Beate Sander, Elysa Widjaja
OBJECTIVE: To evaluate the effectiveness of anterior temporal lobectomy (ATL) versus selective amygdalohippocampectomy (SAH) on seizure-free outcome in patients with temporal lobe epilepsy, using both direct and indirect evidence from the literature. METHODS: MEDLINE, Embase and Cochrane databases were searched for original research articles and systematic reviews comparing ATL versus SAH, and ATL or SAH versus medical management (MM). The outcome was seizure freedom at 12 months of follow-up or longer...
May 16, 2018: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29768433/the-long-term-outcomes-of-epilepsy-surgery
#18
Midhun Mohan, Simon Keller, Andrew Nicolson, Shubhabrata Biswas, David Smith, Jibril Osman Farah, Paul Eldridge, Udo Wieshmann
OBJECTIVE: Despite modern anti-epileptic drug treatment, approximately 30% of epilepsies remain medically refractory and for these patients, epilepsy surgery may be a treatment option. There have been numerous studies demonstrating good outcome of epilepsy surgery in the short to median term however, there are a limited number of studies looking at the long-term outcomes. The aim of this study was to ascertain the long-term outcome of resective epilepsy surgery in a large neurosurgery hospital in the U...
2018: PloS One
https://www.readbyqxmd.com/read/29768152/effect-of-cannabidiol-on-drop-seizures-in-the-lennox-gastaut-syndrome
#19
Orrin Devinsky, Anup D Patel, J Helen Cross, Vicente Villanueva, Elaine C Wirrell, Michael Privitera, Sam M Greenwood, Claire Roberts, Daniel Checketts, Kevan E VanLandingham, Sameer M Zuberi
BACKGROUND: Cannabidiol has been used for treatment-resistant seizures in patients with severe early-onset epilepsy. We investigated the efficacy and safety of cannabidiol added to a regimen of conventional antiepileptic medication to treat drop seizures in patients with the Lennox-Gastaut syndrome, a severe developmental epileptic encephalopathy. METHODS: In this double-blind, placebo-controlled trial conducted at 30 clinical centers, we randomly assigned patients with the Lennox-Gastaut syndrome (age range, 2 to 55 years) who had had two or more drop seizures per week during a 28-day baseline period to receive cannabidiol oral solution at a dose of either 20 mg per kilogram of body weight (20-mg cannabidiol group) or 10 mg per kilogram (10-mg cannabidiol group) or matching placebo, administered in two equally divided doses daily for 14 weeks...
May 17, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29766039/beneficial-outcome-of-urethane-treatment-following-status-epilepticus-in-a-rat-organophosphorus-toxicity-model
#20
Asheebo Rojas, Wenyi Wang, Avery Glover, Zahra Manji, Yujiao Fu, Raymond Dingledine
The efficacy of benzodiazepines to terminate electrographic status epilepticus (SE) declines the longer a patient is in SE. Therefore, alternative methods for ensuring complete block of SE and refractory SE are necessary. We compared the ability of diazepam and a subanesthetic dose of urethane to terminate prolonged SE and mitigate subsequent pathologies. Adult Sprague Dawley rats were injected with diisopropylfluorophosphate (DFP) to induce SE. Rats were administered diazepam (10 mg/kg, ip) or urethane (0...
March 2018: ENeuro
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