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Occipital epilepsy

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https://www.readbyqxmd.com/read/28098941/posterior-cortex-epilepsy-surgery-in-childhood-and-adolescence-predictors-of-long-term-seizure-outcome
#1
Georgia Ramantani, Angeliki Stathi, Armin Brandt, Karl Strobl, Susanne Schubert-Bast, Gert Wiegand, Rudolf Korinthenberg, Vera van Velthoven, Josef Zentner, Andreas Schulze-Bonhage, Thomas Bast
OBJECTIVE: We aimed to investigate the long-term seizure outcome of children and adolescents who were undergoing epilepsy surgery in the parietooccipital cortex and determine their predictive factors. METHODS: We retrospectively analyzed the data of 50 consecutive patients aged 11.1 (mean) ± 5.1 (standard deviation) years at surgery. All patients but one had a magnetic resonance imaging (MRI)-visible lesion. Resections were parietal in 40%, occipital in 32%, and parietooccipital in 28% cases; 24% patients additionally underwent a resection of the posterior border of the temporal lobe...
January 18, 2017: Epilepsia
https://www.readbyqxmd.com/read/28060294/manipulation-of-epileptiform-electrocorticograms-ecogs-and-sleep-in-rats-and-mice-by-acupuncture
#2
Pei-Lu Yi, Shuo-Bin Jou, Yi-Jou Wu, Fang-Chia Chang
Ancient Chinese literature has documented that acupuncture possesses efficient therapeutic effects on epilepsy and insomnia. There is, however, little research to reveal the possible mechanisms behind these effects. To investigate the effect of acupuncture on epilepsy and sleep, several issues need to be addressed. The first is to identify the acupoints, which correspond between humans, rats, and mice. Furthermore, the depth of insertion of the acupuncture needle, the degree of needle twist in manual needle acupuncture, and the stimulation parameters for electroacupuncture (EA) need to be determined...
December 22, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28054130/posterior-reversible-encephalopathy-syndrome
#3
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/28043066/thalamic-hypoperfusion-and-disrupted-cerebral-blood-flow-networks-in-idiopathic-generalized-epilepsy-arterial-spin-labeling-and-graph-theoretical-analysis
#4
Daichi Sone, Masako Watanabe, Miho Ota, Yukio Kimura, Atsuhiko Sugiyama, Tomoko Maekawa, Mariko Okura, Mikako Enokizono, Etsuko Imabayashi, Noriko Sato, Hiroshi Matsuda
PURPOSE: The aim of this study was to investigate interictal cerebral blood flow (CBF) distributions and graph theoretical networks in idiopathic generalized epilepsy (IGE) using arterial spin labeling (ASL) imaging and anatomical covariance methods of graph theoretical analysis. MATERIAL AND METHODS: We recruited 19 patients with IGE and 19 age-/gender-matched healthy controls. Their CBF images were obtained by pseudo-continuous ASL imaging and compared using statistical parametric mapping 8 software (SPM8) and Graph Analysis Toolbox (GAT)...
December 14, 2016: Epilepsy Research
https://www.readbyqxmd.com/read/28017759/the-monro-kellie-doctrine-in-action-posterior-reversible-leukoencephalopathy-syndrome-pres-due-to-intracranial-hypotension-from-lumbo-peritoneal-shunt-placement
#5
Ioannis Karakis, Audrey H Nuccio, Jordan P Amadio, Arthur J Fountain
BACKGROUND: Posterior reversible leukoencephalopathy syndrome (PRES) is linked to various etiologies, foremost systemic hypertension. Its association with intracranial hypotension (IH), a potential sequela of various neurosurgical procedures, is under-recognized. We report a case of lumbo-peritoneal shunt induced IH resulting in PRES with the goal to increase awareness, and elaborate on the potential biological mechanism, based on the Monro-Kellie hypothesis. CASE DESCRIPTION: A 26-year-old woman with acquired immunodeficiency syndrome and epilepsy was admitted for recurrent cryptococcal meningitis and breakthrough seizures...
December 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/28009132/tract-specific-atrophy-in-focal-epilepsy-disease-genetics-or-seizures
#6
David N Vaughan, David Raffelt, Evan Curwood, Meng-Han Tsai, Jacques-Donald Tournier, Alan Connelly, Graeme D Jackson
OBJECTIVE: To investigate whether genetics, underlying pathology or repeated seizures contribute to atrophy in specific white matter tracts. METHODS: Medically-refractory unilateral temporal lobe epilepsy with hippocampal sclerosis (HS-TLE, n=26) was studied as an archetype of focal epilepsy, using fixel-based analysis of diffusion-weighted imaging. A genetic effect was assessed in first-degree relatives of HS-TLE who did not have epilepsy themselves (HS-1°Rel; n=26)...
December 23, 2016: Annals of Neurology
https://www.readbyqxmd.com/read/27928411/visual-impairment-due-to-lissencephaly
#7
V E Marqués-Fernández, H Sánchez-Tocino, M T Escudero-Caro, R Cancho-Candela, M García-Zamora
Lissencephaly is a rare disorder due to abnormal neural migration, causing neurological impairment and clinically characterised by mental retardation and epilepsy. Any disturbance of the visual pathway can cause loss of vision. The authors describe a case of a 6-year-old boy referred to the ophthalmologist presenting poor bilateral vision. This child had no other known medical conditions, and neurological examination was completely normal. Only when a magnetic resonance imaging was made that a lissencephaly-pachygyria with band heterotopia mostly occipital was noted...
October 2016: Neuro-ophthalmology
https://www.readbyqxmd.com/read/27923187/sleep-eeg-patterns-in-infants-with-congenital-zika-virus-syndrome
#8
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/27899123/a-functional-magnetic-resonance-imaging-investigation-of-visual-hallucinations-in-the-human-striate-cortex
#9
Hina Abid, Fayyaz Ahmad, Soo Y Lee, Hyun W Park, Dongmi Im, Iftikhar Ahmad, Safee U Chaudhary
PURPOSE: Human beings frequently experience fear, phobia, migraine and hallucinations, however, the cerebral mechanisms underpinning these conditions remain poorly understood. Towards this goal, in this work, we aim to correlate the human ocular perceptions with visual hallucinations, and map them to their cerebral origins. METHODS: An fMRI study was performed to examine the visual cortical areas including the striate, parastriate and peristriate cortex in the occipital lobe of the human brain...
November 29, 2016: Behavioral and Brain Functions: BBF
https://www.readbyqxmd.com/read/27895559/reorganization-of-visual-callosal-connections-following-alterations-of-retinal-input-and-brain-damage
#10
REVIEW
Laura Restani, Matteo Caleo
Vision is a very important sensory modality in humans. Visual disorders are numerous and arising from diverse and complex causes. Deficits in visual function are highly disabling from a social point of view and in addition cause a considerable economic burden. For all these reasons there is an intense effort by the scientific community to gather knowledge on visual deficit mechanisms and to find possible new strategies for recovery and treatment. In this review, we focus on an important and sometimes neglected player of the visual function, the corpus callosum (CC)...
2016: Frontiers in Systems Neuroscience
https://www.readbyqxmd.com/read/27889818/somatosensory-reflex-seizures-in-a-child-with-epilepsy-related-to-novel-scn1a-mutation
#11
Pinar Arican, Nihal Olgac Dundar, Dilek Cavusoglu, Taha Resid Ozdemır, Pinar Gencpinar
INTRODUCTION: Mutations in SCN1A have been reported in patients with different types of epilepsy, including generalized epilepsy with febrile seizures plus, severe myoclonic epilepsy in infancy, malignant migrating partial seizures in infancy, and other infantile epileptic encephalopathies. CASE REPORT: We report a case of a 10-month-old girl presented with reflex epileptic seizures provoked by somatosensory stimuli with a novel de novo mutation of SCN1A gene. She was observed to have seizures with eye deviation, unresponsiveness provoked by somatosensory stimuli of the face...
November 26, 2016: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/27888083/clinical-and-imaging-evaluation-of-the-transuncus-selective-amygdalo-hippocampectomy
#12
Enrico Ghizoni, Roger Matias, Stefan Lieber, Brunno Machado de Campos, Clarissa Lin Yasuda, João Paulo Sant Ana Santos de Souza, Pamela Castro Pereira, Augusto Amato, Andrei Fernandes Joaquim, Tátila Martins Lopes, Helder Tedeschi, Fernando Cendes
BACKGROUND: Various reports described the transuncus approach (TU) as a selective route to the amygdala and hippocampus, but this approach has not yet being submitted to a solid post operative imaging analysis. The objective of this study was to evaluate the anatomy, surgical technique, postoperative imaging analysis and outcome in a series of temporal lobe epilepsy (TLE) patients who underwent to selective amigdalo-hippocampectomy (SHA) via TU. METHODS: This is a prospective study of 25 consecutive patients who underwent to selective amigdalo-hippocampectomy through TU...
November 22, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27878136/phenotypic-convergence-of-menkes-and-wilson-disease
#13
Boglarka Bansagi, David Lewis-Smith, Endre Pal, Jennifer Duff, Helen Griffin, Angela Pyle, Juliane S Müller, Gabor Rudas, Zsuzsanna Aranyi, Hanns Lochmüller, Patrick F Chinnery, Rita Horvath
Menkes disease is an X-linked multisystem disorder with epilepsy, kinky hair, and neurodegeneration caused by mutations in the copper transporter ATP7A. Other ATP7A mutations have been linked to juvenile occipital horn syndrome and adult-onset hereditary motor neuropathy.(1,2) About 5%-10% of the patients present with "atypical Menkes disease" characterized by longer survival, cerebellar ataxia, and developmental delay.(2) The intracellular copper transport is regulated by 2 P type ATPase copper transporters ATP7A and ATP7B...
December 2016: Neurology. Genetics
https://www.readbyqxmd.com/read/27859033/stereo-electroencephalography-guided-radiofrequency-thermocoagulation-seeg-guided-rf-tc-in-drug-resistant-focal-epilepsy-results-from-a-10-year-experience
#14
Pierre Bourdillon, Jean Isnard, Hélène Catenoix, Alexandra Montavont, Sylvain Rheims, Philippe Ryvlin, Karine Ostrowsky-Coste, François Mauguiere, Marc Guénot
OBJECTIVE: Stereo electroencephalography (SEEG)-guided radiofrequency thermocoagulation (SEEG-guided RF-TC) has been proposed since 2004 as a possible treatment of some focal drug-resistant epilepsy. The aim of this study is to provide extensive data about efficacy and safety of SEEG-guided RF-TC. METHODS: Over a 10-year period, 162 patients with drug-resistant focal epilepsy were eligible for SEEG-guided RF-TG during phase II invasive investigation by SEEG. All follow-up and safety data were collected prospectively...
January 2017: Epilepsia
https://www.readbyqxmd.com/read/27830114/disruptions-in-cortico-subcortical-covariance-networks-associated-with-anxiety-in-new-onset-childhood-epilepsy
#15
Camille Garcia-Ramos, Jack J Lin, Leonardo Bonilha, Jana E Jones, Daren C Jackson, Vivek Prabhakaran, Bruce P Hermann
Anxiety disorders represent a prevalent psychiatric comorbidity in both adults and children with epilepsy for which the etiology remains controversial. Neurobiological contributions have been suggested, but only limited evidence suggests abnormal brain volumes particularly in children with epilepsy and anxiety. Since the brain develops in an organized fashion, covariance analyses between different brain regions can be investigated as a network and analyzed using graph theory methods. We examined 46 healthy children (HC) and youth with recent onset idiopathic epilepsies with (n = 24) and without (n = 62) anxiety disorders...
2016: NeuroImage: Clinical
https://www.readbyqxmd.com/read/27816896/simultaneous-seeg-meg-eeg-recordings-overcome-the-seeg-limited-spatial-sampling
#16
Martine Gavaret, Anne-Sophie Dubarry, Romain Carron, Fabrice Bartolomei, Agnès Trébuchon, Christian-George Bénar
During presurgical evaluation of pharmacoresistant partial epilepsies, stereoelectroencephalography (SEEG) records interictal and ictal activities directly but is inherently limited in spatial sampling. In contrast, scalp-EEG and MEG are less sensitive but provide a global view on brain activity. Therefore, recording simultaneously these three modalities should provide a better understanding of the underlying brain sources by taking advantage of the different sensitivities of the three recording techniques...
December 2016: Epilepsy Research
https://www.readbyqxmd.com/read/27792884/altered-basal-ganglia-cortical-functional-connections-in-frontal-lobe-epilepsy-a-resting-state-fmri-study
#17
Li Dong, Pu Wang, Rui Peng, Sisi Jiang, Benjamin Klugah-Brown, Cheng Luo, Dezhong Yao
OBJECTIVES: The purpose of this study was to investigate alterations of basal ganglia-cortical functional connections in patients with frontal lobe epilepsy (FLE). METHOD: Resting-state functional magnetic resonance imaging (fMRI) data were gathered from 19 FLE patients and 19 age- and gender-matched healthy controls. Functional connectivity (FC) analysis was used to assess the functional connections between basal ganglia and cerebral cortex. Regions of interest, including the left/right caudate, putamen, pallidum and thalamus, were selected as the seeds...
December 2016: Epilepsy Research
https://www.readbyqxmd.com/read/27785033/vagus-nerve-stimulation-balanced-disrupted-default-mode-network-and-salience-network-in-a-postsurgical-epileptic-patient
#18
Kailiang Wang, Qi Chai, Hui Qiao, Jianguo Zhang, Tinghong Liu, Fangang Meng
INTRODUCTION: In recent years, treatment of intractable epilepsy has become more challenging, due to an increase in resistance to antiepileptic drugs, as well as diminished success following resection surgery. Here, we present the case of a 19-year old epileptic patient who received vagus nerve stimulation (VNS) following unsuccessful left parietal-occipital lesion-resection surgery, with results indicating an approximate 50% reduction in seizure frequency and a much longer seizure-free interictal phase...
2016: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/27744245/glutamate-concentrations-vary-with-antiepileptic-drug-use-and-mental-slowing
#19
Tamar M van Veenendaal, Dominique M IJff, Albert P Aldenkamp, Richard H C Lazeron, Nicolaas A J Puts, Richard A E Edden, Paul A M Hofman, Anton J A de Louw, Walter H Backes, Jacobus F A Jansen
OBJECTIVE: Although antiepileptic drugs (AEDs) are effective in suppressing epileptic seizures, they also induce (cognitive) side effects, with mental slowing as a general effect. This study aimed to assess whether concentrations of MR detectable neurotransmitters, glutamate and GABA, are associated with mental slowing in patients with epilepsy taking AEDs. METHODS: Cross-sectional data were collected from patients with localization-related epilepsy using a variety of AEDs from three risk categories, i...
October 13, 2016: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/27728902/changes-in-corticocortical-and-corticohippocampal-network-during-absence-seizures-in-wag-rij-rats-revealed-with-time-varying-granger-causality
#20
Marina V Sysoeva, Lyudmila V Vinogradova, Galina D Kuznetsova, Ilya V Sysoev, Clementina M van Rijn
PURPOSE: Spike-and-wave discharges (SWDs) recorded in the cortical EEGs of WAG/Rij rats are the hallmark for absence epilepsy in this model. Although this type of epilepsy was long regarded as a form of primary generalized epilepsy, it is now recognized that there is an initiation zone - the perioral region of the somatosensory cortex. However, networks involved in spreading the seizure are not yet fully known. Previously, the dynamics of coupling between different layers of the perioral cortical region and between these zones and different thalamic nuclei was studied in time windows around the SWDs, using nonlinear Granger causality...
October 8, 2016: Epilepsy & Behavior: E&B
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