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https://www.readbyqxmd.com/read/28524796/improvement-of-visual-field-defects-after-focal-resection-for-occipital-lobe-epilepsy-case-report
#1
Takahiro Yamamoto, Tadashi Hamasaki, Hideo Nakamura, Kazumichi Yamada
Improvement of visual field defects after surgical treatment for occipital lobe epilepsy is rare. Here, the authors report on a 24-year-old man with a 15-year history of refractory epilepsy that developed after he had undergone an occipital craniotomy to remove a cerebellar astrocytoma at the age of 4. His seizures started with an elementary visual aura, followed by secondary generalized tonic-clonic convulsion. Perimetry revealed left-sided incomplete hemianopia, and MRI showed an old contusion in the right occipital lobe...
May 19, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28515708/disrupted-structural-and-functional-networks-and-their-correlation-with-alertness-in-right-temporal-lobe-epilepsy-a-graph-theory-study
#2
Wenyu Jiang, Jianping Li, Xuemei Chen, Wei Ye, Jinou Zheng
Previous studies have shown that temporal lobe epilepsy (TLE) involves abnormal structural or functional connectivity in specific brain areas. However, limited comprehensive studies have been conducted on TLE associated changes in the topological organization of structural and functional networks. Additionally, epilepsy is associated with impairment in alertness, a fundamental component of attention. In this study, structural networks were constructed using diffusion tensor imaging tractography, and functional networks were obtained from resting-state functional MRI temporal series correlations in 20 right temporal lobe epilepsy (rTLE) patients and 19 healthy controls...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28512714/comparison-of-the-diagnostic-accuracy-of-pet-mri-to-pet-ct-acquired-fdg-brain-exams-for-seizure-focus-detection-a-prospective-study
#3
Michael J Paldino, Erica Yang, Jeremy Y Jones, Nadia Mahmood, Andrew Sher, Wei Zhang, Shireen Hayatghaibi, Ramkumar Krishnamurthy, Victor Seghers
BACKGROUND: There is great interest in positron emission tomography (PET)/magnetic resonance (MR) as a clinical tool due to its capacity to provide diverse diagnostic information in a single exam. OBJECTIVE: The goal of this exam is to compare the diagnostic accuracy of PET/MR-acquired [F-18]2-fluoro-2-deoxyglucose (FDG) brain exams to that of PET/CT with respect to identifying seizure foci in children with localization-related epilepsy. MATERIALS AND METHODS: Institutional Review Board approval and informed consent were obtained for this Health Insurance Portability and Accountability Act-compliant, prospective study...
May 16, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28510905/zoomed-mri-guided-by-combined-eeg-meg-source-analysis-a-multimodal-approach-for-optimizing-presurgical-epilepsy-work-up-and-its-application-in-a-multi-focal-epilepsy-patient-case-study
#4
Ü Aydin, S Rampp, A Wollbrink, H Kugel, J -H Cho, T R Knösche, C Grova, J Wellmer, C H Wolters
In recent years, the use of source analysis based on electroencephalography (EEG) and magnetoencephalography (MEG) has gained considerable attention in presurgical epilepsy diagnosis. However, in many cases the source analysis alone is not used to tailor surgery unless the findings are confirmed by lesions, such as, e.g., cortical malformations in MRI. For many patients, the histology of tissue resected from MRI negative epilepsy shows small lesions, which indicates the need for more sensitive MR sequences...
May 16, 2017: Brain Topography
https://www.readbyqxmd.com/read/28509667/evaluation-of-hippocampal-infolding-angle-and-incomplete-hippocampal-inversion-in-pediatric-patients-with-epilepsy-and-febrile-seizures
#5
Mehtap Beker Acay, Reşit Köken, Ebru Ünlü, Emre Kaçar, Çınar Balçık
PURPOSE: We aimed to investigate the frequency of incomplete hippocampal inversion (IHI) and the hippocampal infolding angle (HIA) in pediatric patients with no additional abnormal findings in the brain. METHODS: Pediatric brain magnetic resonance imaging (MRI) examinations conducted between September 2012 and February 2015 were screened and 83 patients with epilepsy, 49 patients with febrile convulsion, and 74 control patients were included in this retrospective study...
May 16, 2017: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/28506485/surgery-for-dysembryoplastic-neuroepithelial-tumors-and-gangliogliomas-in-eloquent-areas-functional-results-and-seizure-control
#6
B Devaux, F Chassoux, E Landré, B Turak, A Laurent, M Zanello, C Mellerio, P Varlet
INTRODUCTION: Dysembryoplastic neuroepithelial tumors and gangliogliomas are developmental glioneuronal tumors usually revealed by partial epilepsy. High epileptogenicity, childhood epilepsy onset, drug-resistance, temporal location, and seizure freedom after complete resection are common characteristics of both tumors. We report the specificity of surgical management, functional results and seizure outcome in cases of a tumor location in eloquent areas. METHODS: Among 150 patients (88 males, 3-55 years) operated on for refractory epilepsy due to a glioneuronal tumor (1990-2015), 30 (20%, dysembryoplastic neuroepithelial tumors=21; gangliogliomas=9) had a tumor located in an eloquent cortex (sensory-motor, insular or language areas)...
May 12, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28502693/prolonged-blood-brain-barrier-disruption-following-laser-interstitial-ablation-in-epilepsy-a-case-series-with-a-case-report-of-post-ablation-optic-neuritis
#7
Saint-Aaron Morris, Matthew Rollo, Patrick Rollo, Jessica Johnson, Gerald A Grant, Elliott Friedman, Giridhar Kalamangalam, Nitin Tandon
OBJECTIVE: Laser interstitial thermal therapy (LITT) has become increasingly popular for targeting epileptic foci in a minimally invasive fashion. Despite its use in more than a thousand patients, the chronic effects of photo-thermal injury on brain physiology remain poorly understood. METHODS: We prospectively followed the clinical and radiographic courses of a cohort undergoing laser ablation for focal epilepsy. Only patients with non-enhancing lesions and those who had a delayed post-operative MRI with gadolinium administration approximately 6 months after the ablation were considered...
May 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28497669/mapping-seizure-foci-and-tumor-genetic-factors-in-glioma-associated-seizure-patients
#8
Mao Yunhe, Yang Yuan, Wang Xiang, Liu Yanhui, Mao Qing
BACKGROUND: Epilepsy, which is the most common symptom accompanying gliomas, was reported as an independent favorable prognosis factor for glioma patients. However, the correlation between glioma location and epilepsy prognosis, genesis and genetic phenotypes of the glioma associated seizure (GAS) patients is far from clear, the purpose of the current study was to provide probabilistic radiographic atlases reflecting seizure susceptible regions, relationship between tumor associated biomarkers and seizure initiation and poor epilepsy prognosis areas...
May 11, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28494616/breakdown-of-thalamo-cortical-connectivity-precedes-spike-generation-in-focal-epilepsies
#9
Vitalie Chiosa, Stanislav Alexandru Groppa, Dimitru Ciolac, Nabin Koirala, Liuda Misina, Yaroslav Winter, Maria Moldovanu, Muthuraman Muthuraman, Sergiu Groppa
EEG spikes and focal epileptic seizures are generated in circumscribed cerebral networks that have been insufficiently described. For precise time and spatial domain networks characterization we applied in patients with focal epilepsy dense array 256-channel EEG recordings with causal connectivity estimation using time resolved partial directed coherence and 3T-MRI derived cortical and thalamus integrity reconstruction. Prior to spike generation significant theta and alpha bands driven information flows alterations were noted from both temporal and frontal lobes to thalamus and from thalamus to the frontal lobe...
May 11, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28487114/structural-brain-network-analysis-of-children-with-localization-related-epilepsy
#10
Kanako Takeda, Hiroshi Matsuda, Yusaku Miyamoto, Hitoshi Yamamoto
INTRODUCTION: Epilepsy is considered to arise from dysfunction in neural networks. Recent advances in neuroimaging and its analysis have made it possible to investigate both functional and structural connectivity in the brain. The aim of this study was to elucidate alterations in the structural connectivity in children with localization-related epilepsy using the mathematical method of graph theoretical analysis. METHODOLOGY: Fifteen children with localization-related epilepsy (8 female subjects; mean age, 8...
May 6, 2017: Brain & Development
https://www.readbyqxmd.com/read/28484525/invasive-aspergillus-sinusitis-with-orbitocranial-extension
#11
Saleh S Baeesa, Rakan F Bokhari, Khalid B Alghamdi, Hisham B Alem, Jaudah A Al-Maghrabi, Tariq A Madani
CONTEXT: Invasive sinonasal aspergillosis is a silently progressive disease that, left untreated, may invade the adjacent intracranial and intra-orbital compartments incurring serious morbidity. AIM: To evaluate our results of a collaborative surgical management plans for patients with invasive sinonasal aspergillosis with orbitocranial extension. SETTING AND DESIGN: Retrospective study. MATERIALS AND METHODS: Between the years 2000 and 2012, 12 patients with Aspergillus sinusitis with orbitocranial extension were treated at our institution...
April 2017: Asian Journal of Neurosurgery
https://www.readbyqxmd.com/read/28483395/seizure-outcomes-in-children-following-electrocorticography-guided-single-stage-surgical-resection
#12
Seema Bansal, Andrew J Kim, Anne T Berg, Sookyong Koh, Linda C Laux, Srishti Nangia, John J Millichap, Alexandra Shaw, Breanne Fisher, Catherine Dezort, Arthur J DiPatri, Tord D Alden, Douglas R Nordli
BACKGROUND: In children with abnormal imaging, single-stage epilepsy surgery is an attractive alternative to the two-stage approach that relies on invasive recording of seizures. Implanted electrodes carry risks of their own and extend hospitalization, but the efficacy of one-stage resections in a variety of pathologies and cerebral locations is not well established. We report our center's experience with single-stage epilepsy surgery guided by intraoperative electrocorticography (ECoG)...
February 7, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28458103/changes-in-the-interictal-and-early-postictal-diffusion-and-perfusion-magnetic-resonance-parameters-in-familial-spontaneous-epileptic-cats
#13
Yuji Hamamoto, Daisuke Hasegawa, Shunta Mizoguchi, Yoshihiko Yu, Masae Wada, Takayuki Kuwabara, Aki Fujiwara-Igarashi, Michio Fujita
OBJECTIVE: The familial spontaneous epileptic cat (FSEC) is thought to be a good genetic model of mesial temporal lobe epilepsy. In the current study, cerebral diffusion and perfusion magnetic resonance imaging (MRI) were used to confirm the functional deficit zone in the FSEC and evaluate the effect of a single seizure on different brain regions. METHODS: Six FSECs and six healthy control cats were used in this study. MRI was performed in the interictal state (resting state for control) and postictal state immediately after the vestibular stimulation-induced generalized epileptic seizure (control cats received the same stimulation as the FSECs)...
April 23, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28455369/complement-c5ar1-signaling-promotes-polarization-and-proliferation-of-embryonic-neural-progenitor-cells-through-pkc%C3%AE
#14
Liam G Coulthard, Owen A Hawksworth, Rui Li, Anushree Balachandran, John D Lee, Farshid Sepehrband, Nyoman Kurniawan, Angela Jeanes, David G Simmons, Ernst Wolvetang, Trent M Woodruff
The complement system, typically associated with innate immunity, is emerging as a key controller of non-immune systems including in development, with recent studies linking complement mutations with neurodevelopmental disease. A key effector of the complement response is the activation fragment C5a which, through its receptor C5aR1, is a potent driver of inflammation. Surprisingly, C5aR1 is also expressed during early mammalian embryogenesis, however no clearly defined function is ascribed to C5aR1 in development...
April 28, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28452616/an-ovine-model-of-cerebral-catheter-venography-for-implantation-of-an-endovascular-neural-interface
#15
Thomas James Oxley, Nicholas Lachlan Opie, Gil Simon Rind, Kishan Liyanage, Sam Emmanuel John, Stephen Ronayne, Alan James McDonald, Anthony Dornom, Timothy John Haynes Lovell, Peter John Mitchell, Iwan Bennett, Sebastien Bauquier, Leon Norris Warne, Chris Steward, David Bruce Grayden, Patricia Desmond, Stephen M Davis, Terence John O'Brien, Clive N May
OBJECTIVE Neural interface technology may enable the development of novel therapies to treat neurological conditions, including motor prostheses for spinal cord injury. Intracranial neural interfaces currently require a craniotomy to achieve implantation and may result in chronic tissue inflammation. Novel approaches are required that achieve less invasive implantation methods while maintaining high spatial resolution. An endovascular stent electrode array avoids direct brain trauma and is able to record electrocorticography in local cortical tissue from within the venous vasculature...
April 28, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28449635/seizure-control-and-memory-impairment-are-related-to-disrupted-brain-functional-integration-in-temporal-lobe-epilepsy
#16
Chang-Hyun Park, Yun Seo Choi, A-Reum Jung, Hwa-Kyoung Chung, Hyeon Jin Kim, Jeong Hyun Yoo, Hyang Woon Lee
Brain functional integration can be disrupted in patients with temporal lobe epilepsy (TLE), but the clinical relevance of this disruption is not completely understood. The authors hypothesized that disrupted functional integration over brain regions remote from, as well as adjacent to, the seizure focus could be related to clinical severity in terms of seizure control and memory impairment. Using resting-state functional MRI data acquired from 48 TLE patients and 45 healthy controls, the authors mapped functional brain networks and assessed changes in a network parameter of brain functional integration, efficiency, to examine the distribution of disrupted functional integration within and between brain regions...
April 28, 2017: Journal of Neuropsychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/28448686/plasma-cytokines-associated-with-febrile-status-epilepticus-in-children-a-potential-biomarker-for-acute-hippocampal-injury
#17
William B Gallentine, Shlomo Shinnar, Dale C Hesdorffer, Leon Epstein, Douglas R Nordli, Darrell V Lewis, L Matthew Frank, Syndi Seinfeld, Ruth C Shinnar, Karen Cornett, Binyi Liu, Solomon L Moshé, Shumei Sun
OBJECTIVE: Our aim was to explore the association between plasma cytokines and febrile status epilepticus (FSE) in children, as well as their potential as biomarkers of acute hippocampal injury. METHODS: Analysis was performed on residual samples of children with FSE (n = 33) as part of the Consequences of Prolonged Febrile Seizures in Childhood study (FEBSTAT) and compared to children with fever (n = 17). Magnetic resonance imaging (MRI) was obtained as part of FEBSTAT within 72 h of FSE...
April 27, 2017: Epilepsia
https://www.readbyqxmd.com/read/28448683/magnetic-resonance-imaging-connectivity-for-the-prediction-of-seizure-outcome-in-temporal-lobe-epilepsy
#18
Victoria L Morgan, Dario J Englot, Baxter P Rogers, Bennett A Landman, Ahmet Cakir, Bassel W Abou-Khalil, Adam W Anderson
OBJECTIVE: Currently, approximately 60-70% of patients with unilateral temporal lobe epilepsy (TLE) remain seizure-free 3 years after surgery. The goal of this work was to develop a presurgical connectivity-based biomarker to identify those patients who will have an unfavorable seizure outcome 1-year postsurgery. METHODS: Resting-state functional and diffusion-weighted 3T magnetic resonance imaging (MRI) was acquired from 22 unilateral (15 right, 7 left) patients with TLE and 35 healthy controls...
April 27, 2017: Epilepsia
https://www.readbyqxmd.com/read/28448680/22q11-2-deletion-syndrome-lowers-seizure-threshold-in-adult-patients-without-epilepsy
#19
Robert G Wither, Felippe Borlot, Alex MacDonald, Nancy J Butcher, Eva W C Chow, Anne S Bassett, Danielle M Andrade
OBJECTIVE: Previous studies examining seizures in patients with 22q11.2 deletion syndrome (22q11.2DS) have focused primarily on children and adolescents. In this study we investigated the prevalence and characteristics of seizures and epilepsy in an adult 22q11.2DS population. METHODS: The medical records of 202 adult patients with 22q11.2DS were retrospectively reviewed for documentation of seizures, electroencephalography (EEG) reports, and magnetic resonance imaging (MRI) findings...
April 27, 2017: Epilepsia
https://www.readbyqxmd.com/read/28446651/how-small-can-the-epileptogenic-region-be-a-case-in-point
#20
Graeme D Jackson, Mangor Pedersen, A Simon Harvey
OBJECTIVE: To present a case that demonstrates that seizures and interictal disturbances can be driven by a small area of functionally abnormal cortex. METHODS: Two novel functional MRI network analysis methods were used to supplement conventional seizure and lesion localization methods: (1) regional homogeneity to quantify local connectivity, or synchrony, with a resolution of less than 1 cm(3) of cortex; and (2) small-worldness to combine information about whole brain network segregation and integration...
April 26, 2017: Neurology
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