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Complex Partial Seizure

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https://www.readbyqxmd.com/read/28708842/evaluating-whole-genome-sequence-data-from-the-genetic-absence-epilepsy-rat-from-strasbourg-and-its-related-non-epileptic-strain
#1
Pablo M Casillas-Espinosa, Kim L Powell, Mingfu Zhu, C Ryan Campbell, Jessica M Maia, Zhong Ren, Nigel C Jones, Terence J O'Brien, Slavé Petrovski
OBJECTIVE: The Genetic Absence Epilepsy Rats from Strasbourg (GAERS) are an inbreed Wistar rat strain widely used as a model of genetic generalised epilepsy with absence seizures. As in humans, the genetic architecture that results in genetic generalized epilepsy in GAERS is poorly understood. Here we present the strain-specific variants found among the epileptic GAERS and their related Non-Epileptic Control (NEC) strain. The GAERS and NEC represent a powerful opportunity to identify neurobiological factors that are associated with the genetic generalised epilepsy phenotype...
2017: PloS One
https://www.readbyqxmd.com/read/28698761/vagus-nerve-stimulation
#2
REVIEW
Hakan Ekmekçi, Hülagu Kaptan
BACKGROUND: The vagus nerve stimulation (VNS) is an approach mainly used in cases of intractable epilepsy despite all the efforts. Also, its benefits have been shown in severe cases of depression resistant to typical treatment. AIM: The aim of this study was to present current knowledge of vagus nerve stimulation. MATERIAL AND METHODS: A new value has emerged just at this stage: VNS aiming the ideal treatment with new hopes. It is based on the placement of a programmable generator on the chest wall...
June 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28697467/smoking-prevalence-and-seizure-control-in-chinese-males-with-epilepsy
#3
Hui Gao, Josemir W Sander, Xudong Du, Jiani Chen, Cairong Zhu, Dong Zhou
Smoking has a negative effect on most diseases, yet it is under-investigated in people with epilepsy; thus its role is not clear in the general population with epilepsy. We performed a retrospective pilot study on males with epilepsy to determine the smoking rate and its relationship with seizure control using univariate analysis to calculate odds ratios (ORs) and also used a multi-variate logistic regression model. The smoking rate in our sample of 278 individuals was 25.5%, which is lower than the general Chinese population smoking rate among males of 52...
July 7, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28670128/clinical-features-of-limbic-encephalitis-with-lgi1-antibody
#4
Meiling Wang, Xiaoyu Cao, Qingxin Liu, Wenbin Ma, Xiaoqian Guo, Xuewu Liu
OBJECTIVE: The objective of this study was to analyze the clinical manifestation, course, evolution, image manifestation, and treatments of LGI1 limbic encephalitis (LE). PATIENTS AND METHODS: Studies confirmed that LE with the complex antibody of voltage-gated potassium channels is LGI1 LE. Since then, LE cases have been reported. In this study, 10 typical LE cases were searched in PubMed. These cases and one additional case, which we reported herein, were retrospectively analyzed...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28668627/vigabatrin-lacks-proarrhythmic-potential-results-from-a-thorough-qt-qtc-study-in-healthy-volunteers
#5
Dwain Tolbert, Susan Reid, Stuart Harris, Ihor Bekersky
PURPOSE: A thorough QT study was performed to assess the proarrhythmic potential of vigabatrin, an antiepileptic drug approved in the United States for the treatment of infantile spasms and refractory complex partial seizures. METHODS: In this Phase I, randomized, double-blind, placebo- and active-controlled (moxifloxacin), 4-sequence, crossover study conducted at a single center, healthy participants received 1 of 4 randomly assigned treatments: 3.0g vigabatrin solution (therapeutic dose) and 1 moxifloxacin placebo tablet; 6...
June 28, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28661008/antiepileptic-drug-monotherapy-for-epilepsy-a-network-meta-analysis-of-individual-participant-data
#6
REVIEW
Sarah J Nevitt, Maria Sudell, Jennifer Weston, Catrin Tudur Smith, Anthony G Marson
BACKGROUND: Epilepsy is a common neurological condition with a worldwide prevalence of around 1%. Approximately 60% to 70% of people with epilepsy will achieve a longer-term remission from seizures, and most achieve that remission shortly after starting antiepileptic drug treatment. Most people with epilepsy are treated with a single antiepileptic drug (monotherapy) and current guidelines from the National Institute for Health and Care Excellence (NICE) in the United Kingdom for adults and children recommend carbamazepine or lamotrigine as first-line treatment for partial onset seizures and sodium valproate for generalised onset seizures; however a range of other antiepileptic drug (AED) treatments are available, and evidence is needed regarding their comparative effectiveness in order to inform treatment choices...
June 29, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28632301/regulation-of-kindling-epileptogenesis-by-hippocampal-toll-like-receptors-2
#7
Jesús-Servando Medel-Matus, Ashley Reynolds, Don Shin, Raman Sankar, Andrey Mazarati
This study examined whether Toll-like receptors 2 (TLR2) contribute to rapid kindling epileptogenesis. A TLR2 agonist, lipoteichoic acid (LTA), LTA antibody (LTA-A), or normal saline (control) was administered daily over 3 consecutive days, unilaterally into ventral hippocampus of adult male Wistar rats. Thirty minutes after the last injection, the animals were subjected to a rapid kindling procedure. The ictogenesis was gauged by comparing afterdischarge threshold (ADT) and afterdischarge duration (ADD) before the treatments, after the treatments prior to kindling, and 24 h after kindling...
June 20, 2017: Epilepsia
https://www.readbyqxmd.com/read/28630376/functional-connectivity-disturbances-of-the-ascending-reticular-activating-system-in-temporal-lobe-epilepsy
#8
Dario J Englot, Pierre-Francois D'Haese, Peter E Konrad, Monica L Jacobs, John C Gore, Bassel W Abou-Khalil, Victoria L Morgan
OBJECTIVE: Seizures in temporal lobe epilepsy (TLE) disturb brain networks and lead to connectivity disturbances. We previously hypothesised that recurrent seizures in TLE may lead to abnormal connections involving subcortical activating structures including the ascending reticular activating system (ARAS), contributing to neocortical dysfunction and neurocognitive impairments. However, no studies of ARAS connectivity have been previously reported in patients with epilepsy. METHODS: We used resting-state functional MRI recordings in 27 patients with TLE (67% right sided) and 27 matched controls to examine functional connectivity (partial correlation) between eight brainstem ARAS structures and 105 cortical/subcortical regions...
June 19, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28623754/quality-of-life-mood-and-seizure-control-in-patients-with-brain-tumor-related-epilepsy-treated-with-lacosamide-as-add-on-therapy-a-prospective-explorative-study-with-a-historical-control-group
#9
Marta Maschio, Alessia Zarabla, Andrea Maialetti, Alessandra Fabi, Antonello Vidiri, Veronica Villani, Diana Giannarelli
OBJECTIVE: Brain tumor-related epilepsy (BTRE) is often drug resistant and patients can be forced to take polytherapy that can adversely affect their quality of life (QoL). Lacosamide (LCM) is a new antiepileptic drug (AED) used as adjunctive therapy in patients with partial seizures with or without secondary generalization, with a favorable pharmacokinetic profile that seems to be effective and well tolerated. Therefore it represents a possible therapeutic choice for patients with BTRE...
June 14, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28591482/hypothalamic-hamartoma-epileptogenesis-beyond-the-lesion
#10
REVIEW
Julia Scholly, Anke Maren Staack, Philippe Kahane, Didier Scavarda, Jean Régis, Edouard Hirsch, Fabrice Bartolomei
The discovery of intrinsic epileptogenicity of the hypothalamic hamartoma (HH) marked a new area in understanding the associated clinical syndrome, often manifesting as progressive epileptic encephalopathy. However, therapeutic procedures targeting the HH proved to be inefficient to cure seizures in up to 50% of cases, whereas in cases with partial improvement, the electroclinical patterns of persisting seizures suggest an involvement of distant cortical regions. The concept of kindling-like secondary epileptogenesis has been suggested as a possible underlying mechanism...
June 2017: Epilepsia
https://www.readbyqxmd.com/read/28572051/late-onset-rasmussen-encephalitis-a-literature-appraisal
#11
REVIEW
Sophie Dupont, Ana Gales, Serge Sammey, Marie Vidailhet, Virginie Lambrecq
Rasmussen Encephalitis (RE) is classically described as a childhood encephalopathy due to a unilateral inflammation of the cerebral cortex with a presumed immune-mediated pathophysiological basis. Unusual variant forms, including adolescent and adult-onset RE have been described but there is still a doubt whether these atypical cases correspond to classical RE patients. To review evidence, a systematic PubMed search was conducted to retrieve papers addressing late onset RE to assess (i) the positivity rate of classical childhood-onset diagnostic criteria for RE in late-onset RE, (ii) the specific clinical and radiological features that could help earlier diagnosis and therapeutic interventions, (iii) the arguments for an autoimmune pathophysiology including (iiia) the association with autoimmune markers or diseases and (iiib) the effects of immunomodulatory or immunosuppressive treatments...
May 29, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28566546/familial-aggregation-of-focal-seizure-semiology-in-the-epilepsy-phenome-genome-project
#12
MULTICENTER STUDY
Steven Tobochnik, Robyn Fahlstrom, Catherine Shain, Melodie R Winawer
OBJECTIVE: To improve phenotype definition in genetic studies of epilepsy, we assessed the familial aggregation of focal seizure types and of specific seizure symptoms within the focal epilepsies in families from the Epilepsy Phenome/Genome Project. METHODS: We studied 302 individuals with nonacquired focal epilepsy from 149 families. Familial aggregation was assessed by logistic regression analysis of relatives' traits (dependent variable) by probands' traits (independent variable), estimating the odds ratio for each symptom in a relative given presence vs absence of the symptom in the proband...
July 4, 2017: Neurology
https://www.readbyqxmd.com/read/28536516/multi-regional-adaptation-in-human-auditory-association-cortex
#13
Urszula Malinowska, Nathan E Crone, Frederick A Lenz, Mackenzie Cervenka, Dana Boatman-Reich
In auditory cortex, neural responses decrease with stimulus repetition, known as adaptation. Adaptation is thought to facilitate detection of novel sounds and improve perception in noisy environments. Although it is well established that adaptation occurs in primary auditory cortex, it is not known whether adaptation also occurs in higher auditory areas involved in processing complex sounds, such as speech. Resolving this issue is important for understanding the neural bases of adaptation and to avoid potential post-operative deficits after temporal lobe surgery for treatment of focal epilepsy...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28522734/voluntary-control-of-epileptiform-spike-wave-discharges-in-awake-rats
#14
Jeremy A Taylor, Krista M Rodgers, Florencia M Bercum, Carmen J Booth, F Edward Dudek, Daniel S Barth
Genetically inherited absence epilepsy in humans is typically characterized by brief (seconds) spontaneous seizures, which involve spike-wave discharges (SWDs) in the EEG and interruption of consciousness and ongoing behavior. Genetic (inbred) models of this disorder in rats have been used to examine mechanisms, comorbidities, and antiabsence drugs. SWDs have also been proposed as models of complex partial seizures (CPSs) following traumatic brain injury (post-traumatic epilepsy). However, the ictal characteristics of these rat models, including SWDs and associated immobility, are also prevalent in healthy outbred laboratory rats...
June 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28521116/efficacy-of-anticonvulsant-substances-in-the-6hz-seizure-test-comparison-of-two-rodent-species
#15
Elise Esneault, Guillaume Peyon, Vincent Castagné
Usually performed in the mouse, the 6Hz seizure test is used for screening potential new anticonvulsant substances against complex partial seizures. Nevertheless, advanced models of temporal lobe epilepsy (TLE) are more often performed in rats, so that possible species-related differences may complicate the development of anticonvulsant substances. The aim of the present study was to evaluate the feasibility of adapting the 6Hz test in the rat. We first compared the effects of increasing current intensities for inducing seizures in the mouse and in the rat...
August 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28510727/alternative-splicing-in-the-c-terminal-tail-of-cav2-1-is-essential-for-preventing-a-neurological-disease-in-mice
#16
Tomonori Aikawa, Takaki Watanabe, Taisuke Miyazaki, Takayasu Mikuni, Minoru Wakamori, Miyano Sakurai, Hidenori Aizawa, Nobutaka Ishizu, Masahiko Watanabe, Masanobu Kano, Hidehiro Mizusawa, Kei Watase
Alternative splicing (AS) that occurs at the final coding exon (exon 47) of the Cav2.1 voltage-gated calcium channel (VGCC) gene produces two major isoforms in the brain, MPI and MPc. These isoforms differ in their splice acceptor sites; human MPI is translated into a polyglutamine tract associated with spinocerebellar ataxia type 6 (SCA6), whereas MPc splices to an immediate stop codon, resulting in a shorter cytoplasmic tail.To gain insight into the functional role of the AS in vivo and whether modulating the splice patterns at this locus can be a potential therapeutic strategy for SCA6, here we created knockin mice that exclusively express MPc by inserting the splice-site mutation...
May 16, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28506426/heterogeneity-of-fhf1-related-phenotype-novel-case-with-early-onset-severe-attacks-of-apnea-partial-mitochondrial-respiratory-chain-complex-ii-deficiency-neonatal-onset-seizures-without-neurodegeneration
#17
Nathalie Villeneuve, Affef Abidi, Pierre Cacciagli, Cécile Mignon-Ravix, Brigitte Chabrol, Laurent Villard, Mathieu Milh
INTRODUCTION/OBJECTIVES: We report the case of a child prospectively followed in our institution for a severe, neonatal onset epilepsy presenting with severe attacks of apnea that were not initially recognized as seizure since they were not associated with any abnormal movement and since interictal EEG was normal. Recording of attacks using prolonged video-EEG recording allowed to confirm the diagnosis of epileptic seizures. RESULTS: Using whole exome sequencing we found a de novo heterozygous, missense mutation of FHF1 (p...
April 29, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/28505008/multinodular-and-vacuolating-neuronal-tumor-a-rare-seizure-associated-entity
#18
Sahara J Cathcart, Jeffrey R Klug, Jason T Helvey, Matthew L White, Andrew P Gard, Rodney D McComb
Multinodular and vacuolating neuronal tumor is a recently described seizure-associated entity with overlapping features of a malformative and neoplastic process. We report a case of multinodular and vacuolating neuronal tumor in a 29-year-old man with a history of recent headaches and complex partial seizures. Neuroimaging revealed a nonenhancing, T2 and T2 fluid-attenuated inversion recovery hyperintense multinodular lesion in the right temporal lobe. Lesional tissue demonstrated well-demarcated nodules of ganglioid cells with vacuolation of both the perikarya and the fibrillary neuropil-like background...
July 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28475999/prevalence-and-risk-factors-of-seizure-clusters-in-adult-patients-with-epilepsy
#19
Baibing Chen, Hyunmi Choi, Lawrence J Hirsch, Austen Katz, Alexander Legge, Rebecca A Wong, Alfred Jiang, Kenneth Kato, Richard Buchsbaum, Kamil Detyniecki
PURPOSE: In the current study, we explored the prevalence of physician-confirmed seizure clusters. We also investigated potential clinical factors associated with the occurrence of seizure clusters overall and by epilepsy type. METHODS: We reviewed medical records of 4116 adult (≥16years old) outpatients with epilepsy at our centers for documentation of seizure clusters. Variables including patient demographics, epilepsy details, medical and psychiatric history, AED history, and epilepsy risk factors were then tested against history of seizure clusters...
July 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28472301/new-gain-of-function-mutation-shows-cacna1d-as-recurrently-mutated-gene-in-autism-spectrum-disorders-and-epilepsy
#20
Alexandra Pinggera, Luisa Mackenroth, Andreas Rump, Jens Schallner, Filippo Beleggia, Bernd Wollnik, Jörg Striessnig
CACNA1D encodes the pore-forming α1-subunit of Cav1.3, an L-type voltage-gated Ca2+-channel. Despite the recent discovery of two de novo missense gain-of-function mutations in Cav1.3 in two individuals with autism spectrum disorder (ASD) and intellectual disability CACNA1D has not been considered a prominent ASD-risk gene in large scale genetic analyses, since such studies primarly focus on likely-disruptive genetic variants. Here we report the discovery and characterization of a third de novo missense mutation in CACNA1D (V401L) in a patient with ASD and epilepsy...
May 4, 2017: Human Molecular Genetics
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