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Neuroimaging and epilepsy

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https://www.readbyqxmd.com/read/28087827/neuropsychological-outcome-following-frontal-lobectomy-for-pharmacoresistant-epilepsy-in-adults
#1
Robyn M Busch, Darlene P Floden, Lisa Ferguson, Shamseldeen Mahmoud, Audrina Mullane, Stephen Jones, Lara Jehi, William Bingaman, Imad M Najm
OBJECTIVE: This retrospective cohort study characterized cognitive and motor outcomes in a large sample of adults who underwent frontal lobe resections for treatment of pharmacoresistant epilepsy. METHODS: Ninety patients who underwent unilateral frontal lobe resection for epilepsy (42 language-dominant hemisphere/48 nondominant hemisphere) between 1989 and 2014 completed comprehensive preoperative and postoperative neuropsychological evaluations that included measures of verbal and nonverbal intellectual functioning, attention/working memory, processing speed, language, executive functioning, verbal and visual memory, and motor functioning...
January 13, 2017: Neurology
https://www.readbyqxmd.com/read/28078877/congenital-muscular-dystrophy-and-epilepsy-a-prospective-case-series-of-pediatric-patients
#2
G Vitaliti, P Pavone, C Romano, M Barbagallo, M Vecchio, C Ledda, R Lubrano, R Falsaperla
Congenital Muscular Dystrophies (CMDs) can be considered as a heterogeneous group of diseases characterized by marked weakness, generalized hypotonia and joint contractures. They are divided into pure and classical forms, without ocular and cerebral involvement, and complex forms, which are associated with cerebral abnormalities. Seizures have rarely been described in the pure forms while they seem to occur more frequently in complex forms. The aim of our study was to evaluate the incidence of seizure in CMD...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28076834/risk-factors-for-posttraumatic-epilepsy-a-systematic-review-and-meta-analysis
#3
REVIEW
Tao Xu, Xinyuan Yu, Shu Ou, Xi Liu, Jinxian Yuan, Hao Huang, Juan Yang, Liang He, Yangmei Chen
OBJECTIVE: A systematic review and meta-analysis was performed to identify risk factors for posttraumatic epilepsy (PTE). METHODS: Two electronic databases (Medline and Embase) were searched to identify studies with a cohort, case-control, or cross-sectional design reporting on epidemiologic evidence regarding risk factors for PTE. RESULTS: Men had a higher risk of developing PTE than women [relative ratio (RR), 1.32; 95% confidence interval (CI), 1...
January 8, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28055074/surgical-treatment-of-nonlesional-neocortical-epilepsy-long-term-longitudinal-study
#4
Dong Wook Kim, Sang Kun Lee, Hye-Jin Moon, Ki-Young Jung, Kon Chu, Chun-Ki Chung
Importance: The proportion of surgery for nonlesional neocortical epilepsy has recently increased, with a decrease in surgery for mesial temporal lobe epilepsy. However, there are only a few studies regarding the long-term surgical outcome and the potential prognostic factors for patients with nonlesional neocortical epilepsy. Objective: To evaluate the long-term surgical outcome and to identify possible prognostic factors in patients with nonlesional neocortical epilepsy...
January 3, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28054130/posterior-reversible-encephalopathy-syndrome
#5
REVIEW
Marlene Fischer, Erich Schmutzhard
The posterior reversible encephalopathy syndrome (PRES) is a neurological disorder of (sub)acute onset characterized by varied neurological symptoms, which may include headache, impaired visual acuity or visual field deficits, disorders of consciousness, confusion, seizures, and focal neurological deficits. In a majority of patients the clinical presentation includes elevated arterial blood pressure up to hypertensive emergencies. Neuroimaging, in particular magnetic resonance imaging, frequently shows a distinctive parieto-occipital pattern with a symmetric distribution of changes reflecting vasogenic edema...
January 4, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28053860/dyke-davidoff-masson-syndrome-in-a-nigerian
#6
Philip B Adebayo, Amnat Bakare, Modupe M Bello, Opeyemi D Olaewe, Kolawole W Wahab
Dyke-Davidoff-Masson syndrome (DDMS) is a rare, but important cause of drug-resistant seizures. Dyke-Davidoff-Masson syndrome is a constellation of clinical features that consists of hemiparesis, seizure, facial asymmetry, and intellectual disability with distinct neuroimaging features. A 27-year-old lady presented to us with drug-resistant epilepsy, hemiparesis, and intellectual disability that necessitated her withdrawal from school. Her brain magnetic resonance imaging (MRI) showed cerebral hemiatrophy, calvarial thickening, and hyperpneumatization of the frontal sinuses consistent with DDMS...
2017: Epilepsy & Behavior Case Reports
https://www.readbyqxmd.com/read/28009725/cognitive-decline-and-dementia-in-down-syndrome
#7
Rosalyn Hithersay, Sarah Hamburg, Bernice Knight, André Strydom
PURPOSE OF REVIEW: Alzheimer's disease is most likely universal in older individuals with Down syndrome, due to having three copies of the amyloid precursor protein gene, resulting in amyloid-beta plaque deposition. Down syndrome is an important population in which to consider clinical trials of treatments to prevent or delay the development of dementia. However, assessment of subtler cognitive changes is challenging due to the presence of intellectual disability. RECENT FINDINGS: Recent research confirmed that older adults with Down syndrome often present with cognitive decline: more than 80% may experience dementia by age 65 years...
December 21, 2016: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/27989258/musical-hallucinations-a-brief-review-of-functional-neuroimaging-findings
#8
Francesco Bernardini, Luigi Attademo, Karen Blackmon, Orrin Devinsky
Musical hallucinations are uncommon phenomena characterized by intrusive and frequently distressful auditory musical percepts without an external source, often associated with hypoacusis, psychiatric illness, focal brain lesion, epilepsy, and intoxication/pharmacology. Their physiological basis is thought to involve diverse mechanisms, including "release" from normal sensory or inhibitory inputs as well as stimulation during seizures, or they can be produced by functional or structural disorders in diverse cortical and subcortical areas...
December 19, 2016: CNS Spectrums
https://www.readbyqxmd.com/read/27988965/ictal-asystole-a-systematic-review
#9
Dalma Tényi, Csilla Gyimesi, Péter Kupó, Réka Horváth, Beáta Bóné, Péter Barsi, Norbert Kovács, Tamás Simor, Zsuzsa Siegler, László Környei, András Fogarasi, József Janszky
OBJECTIVE: To comprehensively analyze ictal asystole (IA) on a large number of subjects. METHODS: We performed a systematic review of case report studies of patients diagnosed with IA (1983-2016). Each included case was characterized with respect to patient history, IA seizure characteristics, diagnostic workup, and therapy. In addition, comparative analyses were also carried out: two alignments were developed based on the delay between epilepsy onset and IA onset ("new-onset" if <1 year, "late-onset" if ≥1 year) and asystole duration (asystole was "very prolonged" if lasted >30 s)...
December 18, 2016: Epilepsia
https://www.readbyqxmd.com/read/27942447/altered-structural-and-functional-thalamocortical-networks-in-secondarily-generalized-extratemporal-lobe-seizures
#10
Syu-Jyun Peng, Yue-Loong Hsin
Structural and functional abnormalities in the thalamocortical network in primary generalized epilepsies or mesial temporal lobe epilepsy have recently been identified by voxel-wise analyses of neuroimaging. However, evidence is needed regarding the profiles of the thalamocortical network in patients with secondarily generalized seizures from focal neocortical sources. We used high-resolution T1-weighted, diffusion-tensor and resting-state functional MR imaging (rs-fMRI) to examine 16 patients with secondarily generalized extratemporal lobe seizures and 16 healthy controls...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27923187/sleep-eeg-patterns-in-infants-with-congenital-zika-virus-syndrome
#11
Maria Durce Costa Gomes Carvalho, Demócrito de Barros Miranda-Filho, Vanessa van der Linden, Paula Fabiana Sobral, Regina Coeli Ferreira Ramos, Maria Ângela Wanderley Rocha, Marli Tenório Cordeiro, Sarah Pinheiro de Alencar, Magda Lahorgue Nunes
OBJECTIVES: To describe sleep EEG patterns of neonates, and infants with microcephaly due to congenital Zika virus (ZikV) syndrome. METHODS: A descriptive case series of EEGs performed in a cohort of neonates with microcephaly monitored from October 2015 to February 2016 at a University Hospital in Northeast Brazil. Infants were investigated following an established protocol that includes EEG, neuroimaging studies, PCR and specific antibodies for ZikV detection...
January 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/27910806/epilepsia-partialis-continua-aetiology-semiology-and-prognosis-in-a-spanish-adult-cohort
#12
Helena Bejr-Kasem, Jacint Sala-Padró, Manuel Toledo, Estevo Santamarina, Silvana Sarria, Montserrat Gonzalez-Cuevas, María Sueiras-Gil, Manolo Quintana, Xavier Salas-Puig
To describe the semiological features in patients suffering with Epilepsia Partialis Continua (EPC), also referred as Kozhevnikov syndrome and their relationship with aetiology, duration, and prognosis, as well as recurrence during follow-up. We analysed consecutive EPC patients diagnosed and followed in our centre over a seven-and-a half year period. We collected demographic and clinical data, along with neuroimaging and EEG recordings. All patients were followed for more than six months. Patients were categorised with single body area or multiple body area involvement according to the body parts affected...
December 1, 2016: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/27883181/workshop-on-neurobiology-of-epilepsy-appraisal-imaging-biomarkers-in-epilepsy
#13
REVIEW
Erwin A van Vliet, Stefanie Dedeurwaerdere, Andrew J Cole, Alon Friedman, Matthias J Koepp, Heidrun Potschka, Riikka Immonen, Asla Pitkänen, Paolo Federico
Neuroimaging offers a wide range of opportunities to obtain information about neuronal activity, brain inflammation, blood-brain barrier alterations, and various molecular alterations during epileptogenesis or for the prediction of pharmacoresponsiveness as well as postoperative outcome. Imaging biomarkers were examined during the XIII Workshop on Neurobiology of Epilepsy (XIII WONOEP) organized in 2015 by the Neurobiology Commission of the International League Against Epilepsy (ILAE). Here we present an extended summary of the discussed issues and provide an overview of the current state of knowledge regarding the biomarker potential of different neuroimaging approaches for epilepsy...
November 24, 2016: Epilepsia
https://www.readbyqxmd.com/read/27873293/supraorbital-keyhole-microsurgical-fenestration-of-symptomatic-temporal-arachnoid-cysts-in-children-advantages-and-limitations
#14
Sherif Elkheshin, Ahmed Soliman
AIM: To investigate the impact of endoscope assisted microsurgical fenestration of temporal arachnoid cysts, the advantages and limitations of the technique. MATERIAL AND METHODS: Retrospective study including twenty five children of symptomatic temporal arachnoid cysts operated via Eyebrow Supra-Orbital Keyhole Microsurgical Fenestration targeting medial cyst wall, Preoperative MRI brain was done for all patients. RESULTS: Preoperative, clinical presentation included headache (80%), nausea & vomiting (64%), drug resistant epilepsy (52%), macrocephaly (12%) papilledema (28%) motor weakness in the form of right sided hemiparesis (12%) and cranial nerve palsy...
October 14, 2016: Turkish Neurosurgery
https://www.readbyqxmd.com/read/27872899/de-novo-fgf12-mutation-in-2-patients-with-neonatal-onset-epilepsy
#15
Ilaria Guella, Linda Huh, Marna B McKenzie, Eric B Toyota, E Martina Bebin, Michelle L Thompson, Gregory M Cooper, Daniel M Evans, Sarah E Buerki, Shelin Adam, Margot I Van Allen, Tanya N Nelson, Mary B Connolly, Matthew J Farrer, Michelle Demos
OBJECTIVE: We describe 2 additional patients with early-onset epilepsy with a de novo FGF12 mutation. METHODS: Whole-exome sequencing was performed in 2 unrelated patients with early-onset epilepsy and their unaffected parents. Genetic variants were assessed by comparative trio analysis. Clinical evolution, EEG, and neuroimaging are described. The phenotype and response to treatment was reviewed and compared to affected siblings in the original report. RESULTS: We identified the same FGF12 de novo mutation reported previously (c...
December 2016: Neurology. Genetics
https://www.readbyqxmd.com/read/27862625/bayesian-vector-autoregressive-model-for-multi-subject-effective-connectivity-inference-using-multi-modal-neuroimaging-data
#16
Sharon Chiang, Michele Guindani, Hsiang J Yeh, Zulfi Haneef, John M Stern, Marina Vannucci
In this article a multi-subject vector autoregressive (VAR) modeling approach was proposed for inference on effective connectivity based on resting-state functional MRI data. Their framework uses a Bayesian variable selection approach to allow for simultaneous inference on effective connectivity at both the subject- and group-level. Furthermore, it accounts for multi-modal data by integrating structural imaging information into the prior model, encouraging effective connectivity between structurally connected regions...
November 16, 2016: Human Brain Mapping
https://www.readbyqxmd.com/read/27853892/seizure-onset-zone-localization-from-ictal-high-density-eeg-in-refractory-focal-epilepsy
#17
Willeke Staljanssens, Gregor Strobbe, Roel Van Holen, Gwénaël Birot, Markus Gschwind, Margitta Seeck, Stefaan Vandenberghe, Serge Vulliémoz, Pieter van Mierlo
Epilepsy surgery is the most efficient treatment option for patients with refractory epilepsy. Before surgery, it is of utmost importance to accurately delineate the seizure onset zone (SOZ). Non-invasive EEG is the most used neuroimaging technique to diagnose epilepsy, but it is hard to localize the SOZ from EEG due to its low spatial resolution and because epilepsy is a network disease, with several brain regions becoming active during a seizure. In this work, we propose and validate an approach based on EEG source imaging (ESI) combined with functional connectivity analysis to overcome these problems...
November 16, 2016: Brain Topography
https://www.readbyqxmd.com/read/27831545/neuroimaging-findings-in-mowat-wilson-syndrome-a-study-of-54-patients
#18
Livia Garavelli, Ivan Ivanovski, Stefano Giuseppe Caraffi, Daniela Santodirocco, Marzia Pollazzon, Duccio Maria Cordelli, Ebtesam Abdalla, Patrizia Accorsi, Margaret P Adam, Chiara Baldo, Allan Bayat, Elga Belligni, Federico Bonvicini, Jeroen Breckpot, Bert Callewaert, Guido Cocchi, Goran Cuturilo, Koenraad Devriendt, Mary Beth Dinulos, Olivera Djuric, Roberta Epifanio, Francesca Faravelli, Debora Formisano, Lucio Giordano, Marina Grasso, Sabine Grønborg, Alessandro Iodice, Lorenzo Iughetti, Didier Lacombe, Massimo Maggi, Baris Malbora, Isabella Mammi, Sebastien Moutton, Rikke Møller, Petra Muschke, Manuela Napoli, Chiara Pantaleoni, Rosario Pascarella, Alessandro Pellicciari, Maria Luisa Poch-Olive, Federico Raviglione, Francesca Rivieri, Carmela Russo, Salvatore Savasta, Gioacchino Scarano, Angelo Selicorni, Margherita Silengo, Giovanni Sorge, Luigi Tarani, Luis Gonzaga Tone, Annick Toutain, Aurelien Trimouille, Elvis Terci Valera, Samantha Schrier Vergano, Nicoletta Zanotta, Marcella Zollino, William B Dobyns, Alex R Paciorkowski
PURPOSE: Mowat-Wilson syndrome (MWS) is a genetic disease characterized by distinctive facial features, moderate to severe intellectual disability, and congenital malformations, including Hirschsprung disease, genital and eye anomalies, and congenital heart defects, caused by haploinsufficiency of the ZEB2 gene. To date, no characteristic pattern of brain dysmorphology in MWS has been defined. METHODS: Through brain magnetic resonance imaging (MRI) analysis, we delineated a neuroimaging phenotype in 54 MWS patients with a proven ZEB2 defect, compared it with the features identified in a thorough review of published cases, and evaluated genotype-phenotype correlations...
November 10, 2016: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/27814760/clinical-predictors-of-seizure-recurrence-after-the-first-post-ischemic-stroke-seizure
#19
Hyeon Jin Kim, Kee Duk Park, Kyoung-Gyu Choi, Hyang Woon Lee
BACKGROUND: The number of patients suffering post-stroke seizure after ischemic stroke (PSSi) is quite considerable, especially because ischemic stroke is more prevalent than hemorrhage in the general population. This study aimed to determine the predicting factors for seizure recurrence in ischemic stroke survivors and develop a clinical scoring system for the prediction of risks for seizure recurrence after the first PSSi. METHODS: We reviewed 3792 ischemic stroke patients from the Ewha Stroke Registry...
November 5, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27806448/functional-magnetic-resonance-imaging-in-clinical-practice-state-of-the-art-and-science
#20
Christen D Barras, Hamed Asadi, Torsten Baldeweg, Laura Mancini, Tarek A Yousry, Sotirios Bisdas
BACKGROUND: Functional magnetic resonance imaging (fMRI) has become a mainstream neuroimaging modality in the assessment of patients being evaluated for brain tumour and epilepsy surgeries. Thus, it is important for doctors in primary care settings to be well acquainted with the present and potential future applications, as well as limitations, of this modality. OBJECTIVE: The objective of this article is to introduce the theoretical principles and state-of-the-art clinical applications of fMRI in brain tumour and epilepsy surgery, with a focus on the implications for clinical primary care...
November 2016: Australian Family Physician
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