keyword
MENU ▼
Read by QxMD icon Read
search

Epileptic

keyword
https://www.readbyqxmd.com/read/28319873/magnetoencephalography-with-temporal-spread-imaging-to-visualize-propagation-of-epileptic-activity
#1
Sumiya Shibata, Masao Matsuhashi, Takeharu Kunieda, Yukihiro Yamao, Rika Inano, Takayuki Kikuchi, Hisaji Imamura, Shigetoshi Takaya, Riki Matsumoto, Akio Ikeda, Ryosuke Takahashi, Tatsuya Mima, Hidenao Fukuyama, Nobuhiro Mikuni, Susumu Miyamoto
OBJECTIVE: We describe temporal spread imaging (TSI) that can identify the spatiotemporal pattern of epileptic activity using Magnetoencephalography (MEG). METHODS: A three-dimensional grid of voxels covering the brain is created. The array-gain minimum-variance spatial filter is applied to an interictal spike to estimate the magnitude of the source and the time (Ta) when the magnitude exceeds a predefined threshold at each voxel. This calculation is performed through all spikes...
January 30, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28318732/paroxysmal-events-during-prolonged-video-video-electroencephalography-monitoring-in-refractory-epilepsy
#2
A Sanabria-Castro, F Henríquez-Varela, C Monge-Bonilla, S Lara-Maier, M Sittenfeld-Appel
INTRODUCTION: Given that epileptic seizures and non-epileptic paroxysmal events have similar clinical manifestations, using specific diagnostic methods is crucial, especially in patients with drug-resistant epilepsy. Prolonged video electroencephalography monitoring during epileptic seizures reveals epileptiform discharges and has become an essential procedure for epilepsy diagnosis. The main purpose of this study is to characterise paroxysmal events and compare patterns in patients with refractory epilepsy...
March 16, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28318128/proton-mr-spectroscopy-in-patients-with-nonlesional-insular-cortex-epilepsy-confirmed-by-invasive-eeg-recordings
#3
Yasmine Aitouche, Steve A Gibbs, Guillaume Gilbert, Olivier Boucher, Alain Bouthillier, Dang Khoa Nguyen
BACKGROUND AND PURPOSE: Recent studies suggest that a nonnegligible proportion of drug-resistant epilepsy surgery candidates have an epileptogenic zone that involves the insula. We aimed to examine the value of proton magnetic resonance spectroscopy ((1) H-MRS) in identifying patients with insular cortex epilepsy. METHODS: Patients with possible nonlesional drug-refractory insular epilepsy underwent a voxel-based (1) H-MRS study prior to an intracranial electroencephalographic (EEG) study...
March 20, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28316319/epileptic-spasms-in-paediatric-post-traumatic-epilepsy-at-a-tertiary-referral-centre
#4
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/28315958/brain-tumor-location-influences-the-onset-of-acute-psychiatric-adverse-events-of-levetiracetam-therapy-an-observational-study
#5
Vincenzo Belcastro, Laura Rosa Pisani, Silvio Bellocchi, Paolo Casiraghi, Gaetano Gorgone, Marco Mula, Francesco Pisani
To explore possible correlations among brain lesion location, development of psychiatric symptoms and the use of antiepileptic drugs (AEDs) in a population of patients with brain tumor and epilepsy. The medical records of 283 patients with various types of brain tumor (161 M/122 F, mean age 64.9 years) were analysed retrospectively. Patients with grade III and IV glioma, previous history of epileptic seizures and/or psychiatric disorders were excluded. Psychiatric symptoms occurring after initiation of AED therapy were considered as treatment emergent psychiatric adverse events (TE-PAEs) if they fulfilled the following conditions: (1) onset within 4 weeks after the beginning of AED therapy; (2) disappearance on drug discontinuation; (3) absence of any other identified possible concurrent cause...
March 18, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28315806/paroxysmal-nonepileptic-events-in-children-with-epilepsy
#6
Yuji Ito, Hiroyuki Kidokoro, Tamiko Negoro, Masaharu Tanaka, Yu Okai, Yoko Sakaguchi, Chikako Ogawa, Tomoya Takeuchi, Atsuko Ohno, Hiroyuki Yamamoto, Tomohiko Nakata, Satoshi Maesawa, Kazuyoshi Watanabe, Yoshiyuki Takahashi, Jun Natsume
OBJECTIVE: The aim of this study was to clarify the characteristics of paroxysmal nonepileptic events (PNEs) suspected as being epileptic seizures by families of children with epilepsy. METHODS: The video-EEG (vEEG) recordings of habitual paroxysmal events in children with epilepsy at Nagoya University Hospital between October 2006 and January 2016 were reviewed. Based on the doctor's suspicion before the vEEG, the PNEs were divided into two groups that included PNEs suspected as epileptic seizures and PNEs suspected as PNEs...
February 27, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28315465/early-preclinical-evaluation-of-dihydropyrimidin-thi-ones-as-potential-anticonvulsant-drug-candidates
#7
Mariana Matias, Gonçalo Campos, Samuel Silvestre, Amílcar Falcão, Gilberto Alves
Although significant advances are occurring in epilepsy research, about 30% of epileptic patients are still inadequately controlled by standard drug therapy. For this reason, it continues to be important to develop new chemical entities through which epilepsy could be effectively controlled. In this study, the anticonvulsant activity of forty-two dihydropyrimidin(thi)ones was explored and their efficacy was evaluated in rodents against the maximal electroshock seizure (MES) and subcutaneous pentylenetetrazole tests...
March 14, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28315449/prophylactic-levetiracetam-for-seizure-control-after-cranioplasty-a-multicenter-prospective-controlled-study
#8
Shuli Liang, Ping Ding, Shaohui Zhang, Junchen Zhang, Jiwu Zhang, Yuping Wu
PURPOSE: To study the efficacy and safety of prophylactic levetiracetam (LEV) administration in adults undergoing cranioplasty. METHODS: Two hundred adults undergoing cranioplasty were prospectively enrolled and randomly divided into LEV group (prophylactic LEV for 24 weeks) and control group (no prophylactic anti-epileptic drugs). The patients' demographic and clinical characteristics, occurrence of postoperative seizure, changes in intelligence quotient (IQ), memory quotient (MQ), and activities of daily living (ADL) scores, as well as postoperative hospital stay side effects, were all analyzed at 2-, 24-, and 48-week follow-up visits...
March 14, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28315444/directional-spread-of-activity-in-synaptic-networks-of-the-human-lateral-amygdala
#9
Stéphanie Graebenitz, Manuela Cerina, Jörg Lesting, Olga Kedo, Ali Gorji, Heinz Pannek, Volkmar Hans, Karl Zilles, Hans-Christian Pape, Erwin-Josef Speckmann
Spontaneous epileptiform activity has previously been observed in lateral amygdala (LA) slices derived from patients with intractable-temporal lobe epilepsy. The present study aimed to characterize intranuclear LA synaptic connectivity and to test the hypothesis that differences in the spread of flow of neuronal activity may relate to spontaneous epileptiform activity occurrence. Electrical activity was evoked through electrical microstimulation in acute human brain slices containing the LA, signals were recorded as local field potentials combined with fast optical imaging of voltage-sensitive dye fluorescence...
March 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/28314978/can-developmental-venous-anomalies-cause-seizures
#10
Claire Dussaule, Pascal Masnou, Ghaïdaa Nasser, Frédérique Archambaud, Cécile Cauquil-Michon, Jean-Paul Gagnepain, Viviane Bouilleret, Christian Denier
Developmental venous anomalies (DVAs) are congenital anatomical variants of normal venous drainage of normal brain. Although DVAs are often discovered on the occasion of a seizure, their involvement in epilepsy is poorly studied. Our objective was to determine whether DVA can cause seizures, in the cases where there is no associated lesion, including no cavernoma or dysplasia. Based on clinical history, cerebral MRI, EEG recording, and (18)F-FDG PET, we report 4 patients with DVA revealed by seizures. The first patient had a convulsive seizure caused by a hemorrhagic infarction due to thrombosis of her DVA...
March 17, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28314522/increased-photosensitivity-following-short-sleep-in-sleep-deprived-patients
#11
Ayşe Deniz Elmalı, Hatice Kurucu, Özdem Ertürk Çetin, Özlem Çokar, Zeliha Matur, Ayşin Dervent, Gülçin Benbir Şenel, Candan Gürses, Veysi Demirbilek
INTRODUCTION: We aimed to determine the effect of short day-time sleep on photoparoxysmal epileptic activity in sleep-deprived patients. METHODS: We retrospectively reviewed video-EEG recordings performed between 2003 and 2015. All recordings following at least four hours of sleep deprivation, including intermittent photic stimulation (IPS) both before and after sleep with any form of epileptiform activity were included. The study group was divided into four subgroups: (1) no photoparoxysmal response (PPR) group, with epileptiform activities other than PPRs; (2) increment group, with PPR duration increased by ≥200% after vs...
March 14, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28314521/orienting-reaction-may-help-recognition-of-patients-with-psychogenic-nonepileptic-seizures
#12
Murat Yalçın, Evrim Tellioğlu, Ayşegül Gündüz, Mine Özmen, Naz Yeni, Çiğdem Özkara, Meral E Kiziltan
OBJECTIVE: Psychogenic nonepileptic seizures (PNES) are abrupt, paroxysmal changes in behavior or consciousness that may phenomenologically resemble epileptic seizures. Given the known association between anxiety and PNES, we hypothesized that in these subjects there may be evidence that the nervous system is hypersensitive to external stimuli. We aimed to test our hypothesis by means of the auditory startle reaction (ASR). By investigating ASR, we also had the opportunity to test presence of orienting reaction, which is generally defined as the second phase of response after the auditory stimulus, with longer latency...
March 14, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28303728/how-can-we-overcome-neuropsychological-adverse-effects-of-antiepileptic-drugs
#13
Juri-Alexander Witt, Christoph Helmstaedter
Antiepileptic pharmacotherapy can have a negative or positive impact on cognition and behavior. Besides individual susceptibilities (in terms of idiosyncratic reactions), the risk of adverse drug effects largely depends on treatment decisions. Therefore practical strategies to prevent neuropsychological side effects comprise (1.) selecting antiepileptic drugs (AEDs) with superior neuropsychological side effect profiles, (2.) restricting the individual drug load (target doses and number of concurrent AEDs), (3...
March 17, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28303499/pregnane-x-receptor-not-nuclear-factor-kappa-b-up-regulates-p-glycoprotein-expression-in-the-brain-of-chronic-epileptic-rats-induced-by-kainic-acid
#14
Nian Yu, Yan-Fang Zhang, Kang Zhang, Yong-Fei Cheng, Hai-Yan Ma, Qing Di
Drug-resistance epilepsy (DRE) is attributed to the brain P-glycoprotein (P-gp) overexpression. We previously reported that nuclear factor-kappa B (NF-κB) played a critical role in regulating P-gp expression at the brain of the acute seizure rats. This study was extended further to investigate the interaction effect of NF-κB and pregnane X receptor (PXR) on P-gp expression at the brain of chronic epileptic rats treated with carbamazepine (CBZ). The chronic epileptic models were induced by the micro-injection of kainic acid (KA) into rats' hippocampus...
March 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28303446/expression-of-human-cytomegalovirus-components-in-the-brain-tissues-of-patients-with-rasmussen-s-encephalitis
#15
Yao Zhang, Yisong Wang, Sichang Chen, Shuai Chen, Yuguang Guan, Changqing Liu, Tianfu Li, Guoming Luan, Jing An
Rasmussen's encephalitis (RE) is a rare and severe progressive epileptic syndrome with unknown etiology. Infection by viruses, including human cytomegalovirus (HCMV), has been speculated to be a potential trigger for RE. However, no viral antigens have been detected in the brains of patients with RE; thus, a possible clinical linkage between viral infections and RE has not been firmly established. In this study, we evaluated the expression of HCMV pp65 antigen in brain sections from 26 patients with RE and 20 non-RE patients by immunohistochemistry and in situ hybridization, and assessed the associations between HCMV infection and clinical parameters...
March 2, 2017: Virologica Sinica
https://www.readbyqxmd.com/read/28303258/alterations-in-cytosolic-and-mitochondrial-u-13-c-glucose-metabolism-in-a-chronic-epilepsy-mouse-model
#16
Tanya S McDonald, Catalina Carrasco-Pozo, Mark P Hodson, Karin Borges
Temporal lobe epilepsy is a common form of adult epilepsy and shows high resistance to treatment. Increasing evidence has suggested that metabolic dysfunction contributes to the development of seizures, with previous studies indicating impairments in brain glucose metabolism. Here we aim to elucidate which pathways involved in glucose metabolism are impaired, by tracing the hippocampal metabolism of injected [U-(13)C]glucose (i.p.) during the chronic stage of the pilocarpine-status epilepticus mouse model of epilepsy...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28303256/recurring-functional-interactions-predict-network-architecture-of-interictal-and-ictal-states-in-neocortical-epilepsy
#17
Ankit N Khambhati, Danielle S Bassett, Brian S Oommen, Stephanie H Chen, Timothy H Lucas, Kathryn A Davis, Brian Litt
Human epilepsy patients suffer from spontaneous seizures, which originate in brain regions that also subserve normal function. Prior studies demonstrate focal, neocortical epilepsy is associated with dysfunction, several hours before seizures. How does the epileptic network perpetuate dysfunction during baseline periods? To address this question, we developed an unsupervised machine learning technique to disentangle patterns of functional interactions between brain regions, or subgraphs, from dynamic functional networks constructed from approximately 100 h of intracranial recordings in each of 22 neocortical epilepsy patients...
January 2017: ENeuro
https://www.readbyqxmd.com/read/28302353/epileptic-seizures-as-the-first-symptom-of-wernicke-s-encephalopathy-with-cerebral-cortical-lesions
#18
Kailei Fu, Li Tian, Weishuang Xue, Weiyu Teng
Wernicke's encephalopathy (WE) is acute metabolic disease of the central nervous system caused by deficiency of thiamine. Typical imaging findings are bilateral and symmetric signal in mammillary bodies, medial thalamus and periaqueductal gray. We present a 45-year-old man diagnosed for WE with two seizures and unconsciousness. The magnetic resonance imaging showed bilateral and symmetrical signal hyper-intensities in the frontal and parietal cortex, in addition to the classical MRI findings of WE. Cortical damage in WE is rare...
March 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28300031/epileptic-spasms-in-congenital-disorders-of-glycosylation
#19
Andreia G Pereira, Nadia Bahi-Buisson, Christine Barnerias, Nathalie Boddaert, Rima Nabbout, Pascale de Lonlay, Anna Kaminska, Monika Eisermann
Congenital disorders of glycosylation (CDG) are a group of rare metabolic diseases, characterized by impaired glycosylation of proteins and lipids. Multisystemic involvement is common and neurological impairment is notably severe and disabling, concerning the central and peripheral nervous system. Epilepsy is frequent, but detailed electroclinical description is rare. We describe, retrospectively, the electroclinical features in five children with CDG syndrome and epileptic spasms. Epileptic spasms were observed in patients with CDG Ik, Ic, Ix, and Ip subtypes, and occurred at an early age, before 6 months in all cases, except one who had spasms that started at 18 months...
March 14, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28299629/inhibition-of-calcineurin-a-by-fk506-suppresses-seizures-and-reduces-the-expression-of-glun2b-in-membrane-fraction
#20
Yuetao Wen, Pengfei Fu, Kunlun Wu, Kaichuang Si, Yanfeng Xie, Wei Dan, Yan Zhan, Quanhong Shi
FK506, a calcineurin inhibitor, shows neuroprotective effects and has been associated with neurodegenerative diseases. Calcineurin A (CaNA), a catalytic subunit of calcineurin, mediates the dephosphorylation of various proteins. N-methyl-D-aspartate receptor (GluN) is closely related to epileptogenesis, and various phosphorylation sites of GluN2B, a regulatory subunit of the GluN complex, have different functions. Thus, we hypothesized that one of the potential anti-epileptic mechanisms of FK506 is mediated by its ability to promote the phosphorylation of GluN2B and reduce the expression of GluN2B in membrane fraction by down-regulating CaNA...
March 15, 2017: Neurochemical Research
keyword
keyword
111571
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"