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Neuroimaging and epilepsy

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https://www.readbyqxmd.com/read/28433263/memory-assessment-in-patients-with-temporal-lobe-epilepsy-to-predict-memory-impairment-after-surgery-a-systematic-review
#1
P Parra-Díaz, N García-Casares
INTRODUCTION: Given that surgical treatment of refractory mesial temporal lobe epilepsy may cause memory impairment, determining which patients are eligible for surgery is essential. However, there is little agreement on which presurgical memory assessment methods are best able to predict memory outcome after surgery and identify those patients with a greater risk of surgery-induced memory decline. OBJECTIVE: We conducted a systematic literature review to determine which presurgical memory assessment methods best predict memory outcome...
April 19, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28431832/unravelling-the-mysteries-of-sudden-unexpected-death-in-epilepsy
#2
K G Hampel, R Rocamora Zuñiga, C M Quesada
INTRODUCTION: Sudden unexpected death in epilepsy (SUDEP) is the most frequent cause of premature death in epileptic patients. Most SUDEP events occur at night and frequently go unnoticed; the exact pathophysiological mechanisms of this phenomenon therefore remain undetermined. Nevertheless, most cases of SUDEP are attributed to an infrequent yet extremely severe complication of epileptic seizures. DEVELOPMENT: We conducted a systematic literature search on PubMed...
April 18, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28431599/usefulness-of-ilae-2010-classification-in-mexican-epilepsy-patients
#3
Ildefonso Rodríguez Leyva, Juan Francisco Hernández Gómez, Fernando Cortés Enríquez, Juan Francisco Hernández Sierra
OBJECTIVE: Advances in neuroimaging, genomics, and molecular biology have improved the understanding of the pathogenesis of epilepsy. That is why the International League Against Epilepsy (ILAE) has created a new classification system. The present study aims to evaluate the association between epilepsy cases classified by the ILAE 2010 classification proposal, electroencephalography (EEG), and magnetic resonance imaging brain findings (MRI). METHODS: Prospective cross-sectional design of 277 cases of epilepsy seen at the Epilepsy Clinic, Hospital Central "Dr...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28414105/functional-reorganization-after-hemispherectomy-in-humans-and-animal-models-what-can-we-learn-about-the-brain-s-resilience-to-extensive-unilateral-lesions
#4
REVIEW
Luca Sebastianelli, Viviana Versace, Alexandra Taylor, Francesco Brigo, Wolfgang Nothdurfter, Leopold Saltuari, Eugen Trinka, Raffaele Nardone
Hemispherectomy (HS) is an effective surgical procedure aimed at managing otherwise intractable epilepsy in cases of diffuse unihemispheric pathologies. Neurological recovery in subjects treated with HS is not limited to seizure reduction, rather, sensory-motor and behavioral improvement is often observed. This outcome highlights the considerable capability of the brain to react to such an extensive lesion, by functionally reorganizing and rewiring the cerebral cortex, especially early in life. In this narrative review, we summarize the animal studies as well as the human neurophysiological and neuroimaging studies dealing with the reorganizational processes that occur after HS...
April 13, 2017: Brain Research Bulletin
https://www.readbyqxmd.com/read/28410466/history-of-surgery-for-temporal-lobe-epilepsy
#5
REVIEW
Ali A Asadi-Pooya, Cyrus Rostami
The history of epilepsy and its treatment goes back to ancient times when it included medicinal herbs, lifestyle modifications, and even surgery. Trepanation is considered the oldest surgical procedure for the treatment of epilepsy. The first series of temporal lobectomies for the treatment of drug-resistant epilepsy were reported by Penfield and Flanigin (1950). During the years since then, neuroimaging and other technologies have had remarkable and revolutionary progress. This progress has resulted in tremendous advancements in understanding the underlying causes and pathophysiology of epilepsies...
April 11, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28396650/new-onset-refractory-status-epilepticus-with-claustrum-damage-definition-of-the-clinical-and-neuroimaging-features
#6
Stefano Meletti, Giada Giovannini, Giuseppe d'Orsi, Lisa Toran, Giulia Monti, Rahul Guha, Andreas Kiryttopoulos, Maria Grazia Pascarella, Tommaso Martino, Haris Alexopoulos, Martha Spilioti, Jana Slonkova
New-onset refractory status epilepticus (NORSE) is a rare but challenging condition occurring in a previously healthy patient, often with no identifiable cause. We describe the electro-clinical features and outcomes in a group of patients with NORSE who all demonstrated a typical magnetic resonance imaging (MRI) sign characterized by bilateral lesions of the claustrum. The group includes 31 patients (12 personal and 19 previously published cases; 17 females; mean age of 25 years). Fever preceded status epilepticus (SE) in 28 patients, by a mean of 6 days...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28389021/ictal-speech-and-language-dysfunction-in-adult-epilepsy-clinical-study-of-95%C3%A2-seizures
#7
C Dussaule, C Cauquil, C Flamand-Roze, J-P Gagnepain, V Bouilleret, C Denier, P Masnou
PURPOSE: To analyze the semiological characteristics of the language and speech disorders arising during epileptic seizures, and to describe the patterns of language and speech disorders that can predict laterality of the epileptic focus. METHOD: This study retrospectively analyzed 95 consecutive videos of seizures with language and/or speech disorders in 44 patients admitted for diagnostic video-EEG monitoring. Laterality of the epileptic focus was defined according to electro-clinical correlation studies and structural and functional neuroimaging findings...
April 4, 2017: Revue Neurologique
https://www.readbyqxmd.com/read/28384730/intractable-epilepsy-and-progressive-cognitive-decline-in-a-young-man
#8
Alexander L Cohen, Lyell K Jones, Joseph E Parisi, James P Klaas
A young man with normal neurodevelopment presented with 3 years of medically refractory, progressive epilepsy and myoclonus. Initial examination included neuroimaging, electroencephalography, and biochemical analyses, all of which were unremarkable except for mildly enlarged ventricles. Over the following year, the patient experienced rapid cognitive decline with new-onset recurrent visual hallucinations and progressive lethargy. Results of subsequent electroencephalography and brain imaging were unchanged, and a fluorodeoxyglucose F 18 positron emission tomographic scan was normal...
April 3, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28380698/myoclonus-epilepsy-and-ataxia-due-to-kcnc1-mutation-analysis-of-20-cases-and-k-channel-properties
#9
Karen L Oliver, Silvana Franceschetti, Carol J Milligan, Mikko Muona, Simone A Mandelstam, Laura Canafoglia, Anna M Boguszewska-Chachulska, Amos Korczyn, Francesca Bisulli, Carlo Di Bonaventura, Francesca Ragona, Roberto Michelucci, Bruria Ben-Zeev, Rachel Straussberg, Ferruccio Panzica, João Massano, Daniel Friedman, Arielle Crespel, Bernt A Engelsen, Frederick Andermann, Eva Andermann, Krystyna Spodar, Anetta Lasek-Bal, Patrizia Riguzzi, Elena Pasini, Paolo Tinuper, Laura Licchetta, Elena Gardella, Matthias Lindenau, Annette Wulf, Rikke S Møller, Felix Benninger, Zaid Afawi, Guido Rubboli, Christopher A Reid, Snezana Maljevic, Holger Lerche, Anna-Elina Lehesjoki, Steven Petrou, Samuel F Berkovic
OBJECTIVE: To comprehensively describe the new syndrome of myoclonus epilepsy and ataxia due to potassium (K(+) ) channel mutation (MEAK), including cellular electrophysiological characterization of observed clinical improvement with fever. METHODS: We analysed clinical, electroclinical and neuroimaging data for twenty patients with MEAK due to recurrent KCNC1 p.R320H mutation. In vitro electrophysiological studies were conducted using whole cell patch clamp to explore biophysical properties of wild-type and mutant KV 3...
April 5, 2017: Annals of Neurology
https://www.readbyqxmd.com/read/28378817/severe-neurodegeneration-progressive-cerebral-volume-loss-and-diffuse-hypomyelination-associated-with-a-homozygous-frameshift-mutation-in-cstb
#10
Alan Brien, Christian R Marshall, Susan Blaser, Peter N Ray, Grace Yoon
Mutations of the cystatin B gene (CSTB; OMIM 601145) are known to cause Unverricht-Lundborg disease or progressive myoclonic epilepsy-1A (EPM1A, MIM #254800). Most patients are homozygous for an expanded (>30) dodecamer repeat in the promoter region of CSTB, or are compound heterozygotes for the dodecamer repeat and a point mutation. We report two adolescent sisters born to consanguineous parents of Sri Lankan descent who presented with profound global developmental delay, microcephaly, cortical blindness and axial hypotonia with appendicular hypertonia...
April 5, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28376856/the-causal-relationship-between-neurocysticercosis-infection-and-the-development-of-epilepsy-a-systematic-review
#11
REVIEW
Lucy B Gripper, Susan C Welburn
BACKGROUND: Neurocysticercosis (NCC) is a parasitic infection of the human central nervous system, the most common form of which involves infection of the brain parenchyma with the larval form of the Taenia solium tapeworm. A causal relationship between such an NCC infection and the development of epilepsy in infected individuals is acknowledged, in part supported by high levels of comorbidity in endemic countries worldwide. METHODS: This study undertook a systematic review and critical analysis of the NCC-epilepsy relationship with the primary objective of quantifying the risk of developing epilepsy following NCC infection...
April 5, 2017: Infectious Diseases of Poverty
https://www.readbyqxmd.com/read/28373797/refractory-lesional-parietal-lobe-epilepsy-clinical-electroencephalographic-and-neurodiagnostic-findings
#12
Oğuzhan Kurşun, Hülya Karataş, Neşe Dericioğlu, Serap Saygi
INTRODUCTION: Specialized centers, in the management and surgical treatment of medically refractory epilepsy, emphasize the importance of differentiating the varieties of localization related epilepsies. There has been considerable recent interest in temporal and frontal lobe epileptic syndromes and less attention has been paid to parietal and occipital lobe epilepsies. METHODS: Here we report the clinical, electroencephalographic and neuroimaging characteristics of 46 patients with medically refractory lesional parietal lobe epilepsy who have been followed up for 1-10 years...
September 2016: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28361817/epilepsy-is-there-hope
#13
REVIEW
Carlos A M Guerreiro
Epilepsy is a highly prevalent chronic neurologic disorder and leads to social, behavioural, health and economic consequences. 'Treatment gap' varies from 10 per cent in developed countries to 75 per cent in low-income countries. Stigma and discrimination related to epilepsy are prevalent worldwide. Electroencephalography (EEG) is considered the most important tool for evaluating the patient with epilepsy. Video-EEG monitoring is an important tool for confirming the seizure type and estimating the epileptogenic zone in the brain...
November 2016: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28357411/gnao1-encephalopathy-broadening-the-phenotype-and-evaluating-treatment-and-outcome
#14
Federica Rachele Danti, Serena Galosi, Marta Romani, Martino Montomoli, Keren J Carss, F Lucy Raymond, Elena Parrini, Claudia Bianchini, Tony McShane, Russell C Dale, Shekeeb S Mohammad, Ubaid Shah, Neil Mahant, Joanne Ng, Amy McTague, Rajib Samanta, Gayatri Vadlamani, Enza Maria Valente, Vincenzo Leuzzi, Manju A Kurian, Renzo Guerrini
OBJECTIVE: To describe better the motor phenotype, molecular genetic features, and clinical course of GNAO1-related disease. METHODS: We reviewed clinical information, video recordings, and neuroimaging of a newly identified cohort of 7 patients with de novo missense and splice site GNAO1 mutations, detected by next-generation sequencing techniques. RESULTS: Patients first presented in early childhood (median age of presentation 10 months, range 0-48 months), with a wide range of clinical symptoms ranging from severe motor and cognitive impairment with marked choreoathetosis, self-injurious behavior, and epileptic encephalopathy to a milder phenotype, featuring moderate developmental delay associated with complex stereotypies, mainly facial dyskinesia and mild epilepsy...
April 2017: Neurology. Genetics
https://www.readbyqxmd.com/read/28351825/control-groups-in-paediatric-epilepsy-research-do-first-degree-cousins-show-familial-effects
#15
Melissa Hanson, Blaise Morrison, Jana E Jones, Daren C Jackson, Dace Almane, Michael Seidenberg, Qianqian Zhao, Paul J Rathouz, Bruce P Hermann
To determine whether first-degree cousins of children with idiopathic focal and genetic generalized epilepsies show any association across measures of cognition, behaviour, and brain structure. The presence/absence of associations addresses the question of whether and to what extent first-degree cousins may serve as unbiased controls in research addressing the cognitive, psychiatric, and neuroimaging features of paediatric epilepsies. Participants were children (aged 8-18) with epilepsy who had at least one first-degree cousin control enrolled in the study (n=37) and all enrolled cousin controls (n=100)...
March 1, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28346953/lennox-gastaut-syndrome-a-state-of-the-art-review
#16
Mario Mastrangelo
Lennox-Gastaut syndrome (LGS) is a severe age-dependent epileptic encephalopathy usually with onset between 1 and 8 years of age. Functional neuroimaging studies recently introduced the concept of Lennox-Gastaut as "secondary network epilepsy" resulting from dysfunctions of a complex system involving both cortical and subcortical structures (default-mode network, corticoreticular connections, and thalamus). These dysfunctions are produced by different disorders including hypoxic-ischemic encephalopathies, meningoencephalitis, cortical malformations, neurocutaneous disorders, or tumors...
March 27, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28337311/consciousness-loss-during-epileptogenesis-implication-for-vlpo-pno-circuits
#17
REVIEW
Maohui Feng, Zhigang He, Baowen Liu, Zhixiao Li, Guorong Tao, Duozhi Wu, Hongbing Xiang
There is a growing concern about consciousness loss during epileptic seizures. Understanding neural mechanisms could lead to a better comprehension of cerebral circuit function in the control of consciousness loss in intractable epilepsy. We propose that ventrolateral preoptic area (VLPO)- PnO (nucleus pontis oralis) circuits may serve a major role in the loss of consciousness in drug-refractory epilepsy. Future behavioural and neuroimaging studies are clearly needed to understand the functional connectivity between the VLPO and PnO during loss of consciousness in drug-refractory epilepsy, to greatly prevent unconsciousness in this disorder and improve the quality of life in patients with intractable epilepsy...
2017: International Journal of Physiology, Pathophysiology and Pharmacology
https://www.readbyqxmd.com/read/28324301/neuroimaging-in-epilepsy
#18
REVIEW
Erik H Middlebrooks, Lawrence Ver Hoef, Jerzy P Szaflarski
In recent years, the field of neuroimaging has undergone dramatic development. Specifically, of importance for clinicians and researchers managing patients with epilepsies, new methods of brain imaging in search of the seizure-producing abnormalities have been implemented, and older methods have undergone additional refinement. Methodology to predict seizure freedom and cognitive outcome has also rapidly progressed. In general, the image data processing methods are very different and more complicated than even a decade ago...
April 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28316319/epileptic-spasms-in-paediatric-post-traumatic-epilepsy-at-a-tertiary-referral-centre
#19
Jun T Park, Harry T Chugani
To recognize epileptic spasms (ES) as a seizure type after traumatic brain injury (TBI), accidental or non-accidental, in infants and children. In the process, we aim to gain some insight into the mechanisms of epileptogenesis in ES. A retrospective electronic chart review was performed at the Children's Hospital of Michigan from 2002 to 2012. Electronic charts of 321 patients were reviewed for evidence of post-traumatic epilepsy. Various clinical variables were collected including age at TBI, mechanism of trauma, severity of brain injury, electroencephalography/neuroimaging data, and seizure semiology...
March 17, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28295155/antecedents-and-neuroimaging-patterns-in-cerebral-palsy-with-epilepsy-and-cognitive-impairment-a-population-based-study-in-children-born-at-term
#20
Kristina Ahlin, Bo Jacobsson, Staffan Nilsson, Kate Himmelmann
INTRODUCTION: Antecedents of accompanying impairments in cerebral palsy (CP) and their relation to neuroimaging patterns need to be explored. MATERIAL AND METHODS: A population-based study of 309 children with CP born at term in 1983-1994. Pre-, intra- and postpartum variables previously studied as antecedents of CP type and motor severity were analysed in children with CP and cognitive impairment and/or epilepsy, and in children with CP without these accompanying impairments...
March 12, 2017: Acta Obstetricia et Gynecologica Scandinavica
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