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Epilepsy cognition

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https://www.readbyqxmd.com/read/28811646/pafah1b1-haploinsufficiency-disrupts-gaba-neurons-and-synaptic-e-i-balance-in-the-dentate-gyrus
#1
Matthew T Dinday, Kelly M Girskis, Sunyoung Lee, Scott C Baraban, Robert F Hunt
Hemizygous mutations in the human gene encoding platelet-activating factor acetylhydrolase IB subunit alpha (Pafah1b1), also called Lissencephaly-1, can cause classical lissencephaly, a severe malformation of cortical development. Children with this disorder suffer from deficits in neuronal migration, severe intellectual disability, intractable epilepsy and early death. While many of these features can be reproduced in Pafah1b1(+/-) mice, the impact of Pafah1b1(+/-) on the function of individual subpopulations of neurons and ultimately brain circuits is largely unknown...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808808/ketogenic-diet-versus-gluten-free-casein-free-diet-in-autistic-children-a-case-control-study
#2
Omnia El-Rashidy, Farida El-Baz, Yasmin El-Gendy, Randa Khalaf, Dina Reda, Khaled Saad
Many diet regimens were studied for patients with autism spectrum disorder (ASD) over the past few years. Ketogenic diet is gaining attention due to its proven effect on neurological conditions like epilepsy in children. Forty-five children aged 3-8 years diagnosed with ASD based on DSM-5 criteria were enrolled in this study. Patients were equally divided into 3 groups, first group received ketogenic diet as modified Atkins diet (MAD), second group received gluten free casein free (GFCF) diet and the third group received balanced nutrition and served as a control group...
August 14, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28803030/neurofeedback-sham-neurofeedback-and-cognitive-behavioural-group-therapy-in-adults-with-attention-deficit-hyperactivity-disorder-a-triple-blind-randomised-controlled-trial
#3
Michael Schönenberg, Eva Wiedemann, Alexander Schneidt, Jonathan Scheeff, Alexander Logemann, Philipp M Keune, Martin Hautzinger
BACKGROUND: Many studies suggest that electroencephalographic (EEG) neurofeedback might be beneficial in the treatment of attention-deficit hyperactivity disorder (ADHD). However, numbers of well controlled studies are low and neurofeedback techniques are regarded as highly controversial. The present trial examined the efficacy (compared with sham neurofeedback) and efficiency (compared with meta-cognitive therapy) of a standard EEG neurofeedback protocol in adults with ADHD. METHODS: We did a concurrent, triple-blind, randomised, controlled trial using authorised deception in adults with ADHD from one centre (University of Tübingen) in Tübingen, Germany...
August 9, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28801973/cognitive-functioning-in-children-with-self-limited-epilepsy-with-centrotemporal-spikes-a-systematic-review-and-meta-analysis
#4
REVIEW
Steven Wickens, Stephen C Bowden, Wendyl D'Souza
OBJECTIVE: It is now well appreciated that benign epilepsy with centrotemporal spikes (BECTS, or more recently, ECTS) is associated with a range of cognitive and behavioral disturbances. Despite our improved understanding of cognitive functioning in ECTS, there have been to date no efforts to quantitatively synthesize the available literature within a comprehensive cognitive framework. METHODS: The present systematic review and meta-analysis was conducted according to PRISMA guidelines...
August 12, 2017: Epilepsia
https://www.readbyqxmd.com/read/28800118/deep-source-localization-with-magnetoencephalography-based-on-sensor-array-decomposition-and-beamforming
#5
Yegang Hu, Yicong Lin, Baoshan Yang, Guangrui Tang, Tao Liu, Yuping Wang, Jicong Zhang
In recent years, the source localization technique of magnetoencephalography (MEG) has played a prominent role in cognitive neuroscience and in the diagnosis and treatment of neurological and psychological disorders. However, locating deep brain activities such as in the mesial temporal structures, especially in preoperative evaluation of epilepsy patients, may be more challenging. In this work we have proposed a modified beamforming approach for finding deep sources. First, an iterative spatiotemporal signal decomposition was employed for reconstructing the sensor arrays, which could characterize the intrinsic discriminant features for interpreting sensor signals...
August 11, 2017: Sensors
https://www.readbyqxmd.com/read/28799517/imaging-biomarkers-of-anti-epileptic-drug-action-insights-from-magnetic-resonance-imaging
#6
Lorenzo Caciagli, Fenglai Xiao, Britta Wandschneider, Matthias J Koepp
BACKGROUND: Approximately one third of patients with epilepsy are refractory to medical treatment. Adverse effects associated with anti-epileptic drugs (AEDs) are considered to affect quality of life often more than seizures themselves. Neuroimaging techniques, particularly magnetic resonance imaging (MRI), have proven instrumental in clinical decision making in relation to epilepsy surgery, but may also provide further insights into the mechanisms underlying treatment response and side effects associated with AEDs...
August 9, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28799509/update-on-pharmacological-treatment-of-progressive-myoclonus-epilepsies
#7
Edoardo Ferlazzo, Dorothee Kasteleijn-Nolst Trenite, Gerrit-Jan de Haan, Felix Felix Nitschke, Saija Ahonen, Sara Gasparini, Berge A Minassian
BACKGROUND: Progressive myoclonus epilepsies (PMEs) are a group of rare inherited diseases featuring a combination of myoclonus, seizures and variable degree of cognitive impairment. Despite extensive investigations, a large number of PMEs remain undiagnosed. In this review, we focus on the current pharmacological approach to PMEs. METHODS: References were mainly identified through PubMed search until February 2017 and backtracking of references in pertinent studies...
August 9, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28791729/applications-of-optogenetic-and-chemogenetic-methods-to-seizure-circuits-where-to-go-next
#8
REVIEW
Patrick A Forcelli
Epilepsy is the quintessential circuit disorder, with seizure activity propagating through anatomically constrained pathways. These pathways, necessary for normal sensory, motor, and cognitive function, are hijacked during seizures. Understanding the network architecture at the level of both local microcircuits and distributed macrocircuits may provide new therapeutic avenues for the treatment of epilepsy. Over the past decade, optogenetic and chemogenetic tools have enabled previously impossible levels of functional circuit mapping in neuroscience...
August 9, 2017: Journal of Neuroscience Research
https://www.readbyqxmd.com/read/28778058/response-to-adrenocorticotropic-in-attention-deficit-hyperactivity-disorder-like-symptoms-in-electrical-status-epilepticus-in-sleep-syndrome-is-related-to-electroencephalographic-improvement-a-retrospective-study
#9
Attila Altunel, Emine Özlem Altunel, Ali Sever
INTRODUCTION: Encephalopathy with electrical status epilepticus in sleep (ESES) syndrome is a rare epilepsy syndrome of childhood that is characterized by sleep-induced epileptiform discharges and problems with cognition or behavior. The neuropsychiatric symptoms in ESES syndrome, among which the ADHD-like symptoms are prominent, bear a close resemblance to symptoms in various developmental disorders. Positive response to adrenocorticotropic hormone (ACTH) is associated with the normalization of the EEG and improvement of neuropsychiatric function...
August 1, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28778056/cognitive-predictors-of-adaptive-functioning-in-children-with-symptomatic-epilepsy
#10
Elizabeth N Kerr, Nora Fayed
The current study sought to understand the contribution of the attention and working memory challenges experienced by children with active epilepsy without an intellectual disability to adaptive functioning (AF) while taking into account intellectual ability, co-occurring brain-based psychosocial diagnoses, and epilepsy-related variables. METHODS: The relationship of attention and working memory with AF was examined in 76 children with active epilepsy with intellectual ability above the 2nd percentile recruited from a tertiary care center...
July 28, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28777058/causal-evidence-from-humans-for-the-role-of-mediodorsal-nucleus-of-the-thalamus-in-working-memory
#11
Jari Peräkylä, Lihua Sun, Kai Lehtimäki, Jukka Peltola, Juha Öhman, Timo Möttönen, Keith H Ogawa, Kaisa M Hartikainen
The mediodorsal nucleus of the thalamus (MD) with its extensive connections to the lateral pFC has been implicated in human working memory and executive functions. However, this understanding is based solely on indirect evidence from human lesion and imaging studies and animal studies. Direct, causal evidence from humans is missing. To obtain direct evidence for MD's role in humans, we studied patients treated with deep brain stimulation (DBS) for refractory epilepsy. This treatment is thought to prevent the generalization of a seizure by disrupting the functioning of the patient's anterior nuclei of the thalamus (ANT) with high-frequency electric stimulation...
August 4, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28776646/postoperative-seizure-freedom-does-not-normalize-altered-connectivity-in-temporal-lobe-epilepsy
#12
Luigi Maccotta, Mayra A Lopez, Babatunde Adeyemo, Beau M Ances, Brian K Day, Lawrence N Eisenman, Joshua L Dowling, Eric C Leuthardt, Bradley L Schlaggar, Robert Edward Hogan
OBJECTIVES: Specific changes in the functional connectivity of brain networks occur in patients with epilepsy. Yet whether such changes reflect a stable disease effect or one that is a function of active seizure burden remains unclear. Here, we longitudinally assessed the connectivity of canonical cognitive functional networks in patients with intractable temporal lobe epilepsy (TLE), both before and after patients underwent epilepsy surgery and achieved seizure freedom. METHODS: Seventeen patients with intractable TLE who underwent epilepsy surgery with Engel class I outcome and 17 matched healthy controls took part in the study...
August 3, 2017: Epilepsia
https://www.readbyqxmd.com/read/28769764/gap-junctions-link-regular-spiking-and-fast-spiking-interneurons-in-layer-5-somatosensory-cortex
#13
Robert J Hatch, G Dulini C Mendis, Kai Kaila, Christopher A Reid, Steven Petrou
Gap junctions form electrical synapses that modulate neuronal activity by synchronizing action potential (AP) firing of cortical interneurons (INs). Gap junctions are thought to form predominantly within cortical INs of the same functional class and are therefore considered to act within discrete neuronal populations. Here, we challenge that view and show that the probability of electrical coupling is the same within and between regular-spiking (RS) and fast-spiking (FS) cortical INs in 16-21 days old mice...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28767035/neuropsychological-outcome-in-perinatal-stroke-associated-with-epileptiform-discharges-in-sleep
#14
Aleksandra Mineyko, Wei Qi, Helen L Carlson, Luis Bello-Espinosa, Brian L Brooks, Adam Kirton
BACKGROUND: Patients with arterial perinatal stroke often suffer long-term motor sequelae, difficulties in language, social development, and behaviour as well as epilepsy. Despite homogeneous lesions, long-term behavioural and cognitive outcomes are variable and unpredictable. Sleep-related epileptic encephalopathies can occur after early brain injury and are associated with global developmental delays. We hypothesized that sleep-potentiated epileptiform abnormalities are associated with worse developmental outcomes after perinatal stroke...
July 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/28765170/herpes-simplex-virus-type-1-and-alzheimer-s-disease-possible-mechanisms-and-signposts
#15
REVIEW
Ruth F Itzhaki
Support for the concept that herpes simplex virus type 1 (HSV1), when present in the brains of apolipoprotein E-ε4 carriers, is a major risk for Alzheimer's disease (AD) is increasing steadily, with over 120 publications providing direct or indirect evidence relevant to the hypothesis. No articles have contested the concept, apart from 3 published 13-18 yr ago. This review describes very recent studies on the role of HSV1 but refers also to older studies that provide background for some lesser-known related topics not covered in other recent reviews; these include the relevance of herpes simplex encephalitis and of epilepsy to AD, the action of IFN, and the possible relevance of the different types of DNA damage to AD-in particular, those caused by HSV1-and mechanisms of repair of damage...
August 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28762701/epilepsy-treatment-options
#16
REVIEW
Gerald Liu, Nicole Slater, Allen Perkins
The occurrence of a single seizure does not always require initiation of antiepileptic drugs. Risk of recurrent seizures should guide their use. In adults, key risk factors for recurrence are two unprovoked seizures occurring more than 24 hours apart, epileptiform abnormalities on electroencephalography, abnormal brain imaging, nocturnal seizures, or an epileptic syndrome associated with seizures. In children, key risk factors are abnormal electroencephalography results, an epileptic syndrome associated with seizures, severe head trauma, and cerebral palsy...
July 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/28762475/behavioral-and-fmri-responses-to-fearful-faces-are-altered-in-benign-childhood-epilepsy-with-centrotemporal-spikes-bcects
#17
Carolina Ciumas, Agathe Laurent, Mani Saignavongs, Faustine Ilski, Julitta de Bellescize, Eleni Panagiotakaki, Karine Ostrowsky-Coste, Alexis Arzimanoglou, Vania Herbillon, Danielle Ibarrola, Philippe Ryvlin
OBJECTIVE: We hypothesized that children with benign childhood epilepsy with centrotemporal spikes (BCECTS) might have altered social cognitive skills and underlying neural networks. METHODS: We studied 13 patients with BCECTS and 11 age-matched controls using event-related functional magnetic resonance imaging (fMRI) with an emotional discrimination task consisting of viewing happy, fearful, scrambled, and neutral faces. Behavioral performance measured during the task was correlated with clinical variables and behavioral ratings...
July 31, 2017: Epilepsia
https://www.readbyqxmd.com/read/28757050/electroencephalographic-cognitive-and-neurochemical-effects-of-ly3130481-cerc-611-a-selective-antagonist-of-tarp-%C3%AE-8-associated-ampa-receptors
#18
Jeffrey M Witkin, Jennifer Li, Gary Gilmour, Stephen N Mitchell, Guy Carter, Scott D Gleason, Wesley F Seidel, Brian J Eastwood, Andrew McCarthy, Warren J Porter, Jon Reel, Kevin M Gardinier, Akihiko S Kato, Keith A Wafford
6-[(1S)-1-[1-[5-(2-hydroxyethoxy)-2-pyridyl]pyrazol-3-yl]ethyl]-3H-1,3-benzothiazol-2-one (LY3130481 or CERC-611) is a selective antagonist of AMPA receptors containing transmembrane AMPA receptor regulatory protein (TARP) γ-8. This molecule has been characterized as a potent and efficacious anticonvulsant in an array of acute and chronic epilepsy models in rodents. The present set of experiments was designed to assess the effects of LY3130481 on the electroencephelogram (EEG), cognitive function, and neurochemical outflow...
July 27, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28753497/disease-modifying-effect-of-atipamezole-in-a-model-of-post-traumatic-epilepsy
#19
Jari Nissinen, Pedro Andrade, Teemu Natunen, Mikko Hiltunen, Tarja Malm, Katja Kanninen, Joana I Soares, Olena Shatillo, Jukka Sallinen, Xavier Ekolle Ndode-Ekane, Asla Pitkänen
Treatment of TBI remains a major unmet medical need, with 2.5 million new cases of traumatic brain injury (TBI) each year in Europe and 1.5 million in the USA. This single-center proof-of-concept preclinical study tested the hypothesis that pharmacologic neurostimulation with proconvulsants, either atipamezole, a selective α2-adrenoceptor antagonist, or the cannabinoid receptor 1 antagonist SR141716A, as monotherapy would improve functional recovery after TBI. A total of 404 adult Sprague-Dawley male rats were randomized into two groups: sham-injured or lateral fluid-percussion-induced TBI...
July 12, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28745241/the-role-of-innate-immune-system-receptors-in-epilepsy-research
#20
Oscar Arias-Carrion
Epilepsy is one of the most complex neurological disorders whose study requires a broad knowledge of neurology and neuroscience. It comprises a diverse group of neurological disorders that share the central feature of spontaneous recurrent seizures, and are often accompanied by cognitive deficits and mood disorder. This condition is one of the most common neurological disorders. Until recently, alterations of neuronal activities had been the focus of epilepsy research. This neurocentric emphasis did not address issues that arise in more complex models of epileptogenesis...
July 25, 2017: CNS & Neurological Disorders Drug Targets
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