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mesial temporal sclerosis

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https://www.readbyqxmd.com/read/29341105/metabolomic-characterization-of-human-hippocampus-from-drug-resistant-epilepsy-with-mesial-temporal-seizure
#1
Julien Detour, Caroline Bund, Charles Behr, Hélène Cebula, Ercument A Cicek, Maria-Paola Valenti-Hirsch, Béatrice Lannes, Benoît Lhermitte, Astrid Nehlig, Pierre Kehrli, François Proust, Edouard Hirsch, Izzie-Jacques Namer
OBJECTIVE: Within a complex systems biology perspective, we wished to assess whether hippocampi with established neuropathological features have distinct metabolome. Apparently normal hippocampi with no signs of sclerosis (noHS), were compared to hippocampal sclerosis (HS) type 1 (HS1) and/or type 2 (HS2). Hippocampus metabolome from patients with epilepsy-associated neuroepithelial tumors (EANTs), namely, gangliogliomas (GGs) and dysembryoplastic neuroepithelial tumors (DNTs), was also compared to noHS epileptiform tissue...
January 17, 2018: Epilepsia
https://www.readbyqxmd.com/read/29321710/cytokine-polymorphism-and-hla-genotyping-in-patients-with-temporal-lobe-epilepsy-related-to-hippocampal-sclerosis
#2
Ayşe Altintaş, Çiğdem Özkara, Melis Sohtaoğlu Sevindik, Mustafa Uzan, Çiğdem Kekik Çinar, Ömer Uysal, Fatma Savran Oğuz
Objective: Hippocampal sclerosis (HS) is the most common pathological substrate associated with mesial temporal lobe epilepsy (MTLE), where inflammatory processes are known to play an increasingly important role in the pathogenesis. To further investigate the role of the immune system, both cytokine gene polymorphisms and human leukocyte antigen (HLA) genotyping in patients with MTLE-HS were investigated. Methods: The DNA samples of 100 patients with MTLE-HS and 201 healthy individuals were genotyped for cytokines (IL-6,IL-10, TNF-α, TGF-β1 and IFN-γ) and HLA using polymerase chain reaction (PCR)-SSP and SSO methods...
December 2017: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/29317649/synchrotron-generated-microbeams-induce-hippocampal-transections-in-rats
#3
Erminia Fardone, Benoît Pouyatos, Elke Bräuer-Krisch, Stefan Bartzsch, Hervè Mathieu, Herwig Requardt, Domenico Bucci, Giacomo Barbone, Paola Coan, Giuseppe Battaglia, Geraldine Le Duc, Alberto Bravin, Pantaleo Romanelli
Synchrotron-generated microplanar beams (microbeams) provide the most stereo-selective irradiation modality known today. This novel irradiation modality has been shown to control seizures originating from eloquent cortex causing no neurological deficit in experimental animals. To test the hypothesis that application of microbeams in the hippocampus, the most common source of refractory seizures, is safe and does not induce severe side effects, we used microbeams to induce transections to the hippocampus of healthy rats...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29306849/verbal-learning-and-memory-outcome-in-selective-amygdalohippocampectomy-versus-temporal-lobe-resection-in-patients-with-hippocampal-sclerosis
#4
Mette Thrane Foged, Kirsten Vinter, Louise Stauning, Troels W Kjær, Brice Ozenne, Sándor Beniczky, Olaf B Paulson, Flemming Find Madsen, Lars H Pinborg
PURPOSE: With the advent of new very selective techniques like thermal laser ablation to treat drug-resistant focal epilepsy, the controversy of resection size in relation to seizure outcome versus cognitive deficits has gained new relevance. The purpose of this study was to test the influence of the selective amygdalohippocampectomy (SAH) versus nonselective temporal lobe resection (TLR) on seizure outcome and cognition in patients with mesial temporal lobe epilepsy (MTLE) and histopathological verified hippocampal sclerosis (HS)...
January 4, 2018: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29303866/pet-and-ictal-spect-can-be-helpful-for-localizing-epileptic-foci
#5
Tim J von Oertzen
PURPOSE OF REVIEW: Functional neuroimaging with PET and SPECT is a commonly used tool in presurgical evaluation. The following article reviews the literature of PET and SPECT in presurgical assessment of epilepsies published in the last year. RECENT FINDINGS: FDG-PET adds concomitant information in temporal and extratemporal lobe epilepsy in adults and children. The pattern of hypometabolism in FDG-PET is a good additional predictor or seizure outcome in TLE with mesial temporal sclerosis or negative MRI...
January 4, 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29302917/meta-analysis-of-voxel-based-morphometry-studies-of-gray-matter-abnormalities-in-patients-with-mesial-temporal-lobe-epilepsy-and-unilateral-hippocampal-sclerosis
#6
Liyun Zheng, Guo Bin, Hongwu Zeng, Dongfang Zou, Junling Gao, Jian Zhang, Bingsheng Huang
We aimed to perform a meta-analysis to systematically determine the most consistent regions of gray matter volume (GMV) abnormality in patients of unilateral mesial temporal lobe epilepsy with hippocampal sclerosis (MTLE-HS), and to reveal the difference of GMV abnormality between the patients with left-sided and right-sided MTLE-HS. A comprehensive and systematic search was performed in PubMed for voxel-based morphometry (VBM) studies of MTLE-HS. A total of 12 MTLE-HS studies, including 9 left-sided MTLE-HS (LMTLE-HS) and 8 right-sided MTLE-HS (RMTLE-HS) studies were included...
January 4, 2018: Brain Imaging and Behavior
https://www.readbyqxmd.com/read/29287217/association-of-white-matter-diffusion-characteristics-and-cognitive-deficits-in-temporal-lobe-epilepsy
#7
Raúl Rodríguez-Cruces, Leticia Velázquez-Pérez, Ildefonso Rodríguez-Leyva, Ana Luisa Velasco, David Trejo-Martínez, Héctor Manuel Barragán-Campos, Vicente Camacho-Téllez, Luis Concha
OBJECTIVE: The purpose of this study was to evaluate the relation between cognitive performance and white matter (WM) integrity in patients with temporal lobe epilepsy (TLE) with mesial temporal sclerosis (MTS). METHODS: We included 26 patients with TLE (10 right, 16 left onset) as well as 24 healthy controls matched for age, gender, and years of education. In addition to quantitative hippocampal volume and transverse relaxation (T2) evaluation, whole-brain WM was analyzed using fractional anisotropy (FA) maps, derived from the diffusion tensor model...
December 26, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29247965/predictive-value-of-preoperative-statistical-parametric-mapping-of-regional-glucose-metabolism-in-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis
#8
Martin Kojan, Irena Doležalová, Eva Koriťáková, Radek Mareček, Zdeněk Řehák, Markéta Hermanová, Milan Brázdil, Ivan Rektor
OBJECTIVE: This study was designed to use statistical parametric mapping of interictal positron-emission tomography using [18F]Fluorodeoxyglucose (FDG-PET) to compare the brain metabolisms of patients with mesial temporal lobe epilepsy (MTLE)/hippocampal sclerosis and controls. Another aim of this study was to analyze the potential differences among patients in terms of epilepsy duration, side of hippocampal sclerosis, histopathological findings, insult in their history, and postoperative outcomes...
December 13, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29238960/is-inpatient-ictal-video-electroencephalographic-monitoring-mandatory-in-mesial-temporal-lobe-epilepsy-with-unilateral-hippocampal-sclerosis-a-prospective-study
#9
Marina K M Alvim, Marcia E Morita, Clarissa L Yasuda, Benito P Damasceno, Tátila M Lopes, Ana Carolina Coan, Enrico Ghizoni, Helder Tedeschi, Fernando Cendes
OBJECTIVE: To compare surgical outcome in mesial temporal lobe epilepsy (MTLE) patients with unilateral hippocampal sclerosis (MTLE-HS) who had or did not have preoperative video-electroencephalographic monitoring (VEEG). METHODS: A prospective study was undertaken with 166 consecutive pharmacoresistant unilateral MTLE-HS patients. All patients were investigated with detailed seizure semiology, serial routine outpatient EEG, magnetic resonance imaging, neuropsychological evaluation, and if necessary, other examinations...
December 13, 2017: Epilepsia
https://www.readbyqxmd.com/read/29236824/transtemporal-amygdalohippocampectomy-a-novel-minimally-invasive-technique-with-optimal-clinical-results-and-low-cost
#10
Juan Antonio Castro Flores, Felipe Hada Sanders, Eberval Gadelha Figueiredo, Manoel Jacobsen Teixeira
Mesial temporal sclerosis creates a focal epileptic syndrome that usually requires surgical resection of mesial temporal structures. OBJECTIVE: To describe a novel operative technique for treatment of temporal lobe epilepsy and its clinical results. METHODS: Prospective case-series at a single institution, performed by a single surgeon, from 2006 to 2012. A total of 120 patients were submitted to minimally-invasive keyhole transtemporal amygdalohippocampectomy. RESULTS: Of the patients, 55% were male, and 85% had a right-sided disease...
November 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/29229342/parahippocampectomy-as-a-new-surgical-approach-to-mesial-temporal-lobe-epilepsy-caused-by-hippocampal-sclerosis-a-pilot-randomized-comparative-clinical-trial
#11
Mario Arturo Alonso-Vanegas, Iván D Freire Carlier, Daniel San-Juan, Alma Rosa Martínez, Carlos Trenado
BACKGROUND AND OBJECTIVE: The parahippocampal gyrus plays an important role in the epileptogenic pathways of mesial temporal lobe epilepsy caused by hippocampal sclerosis (mTLE-HS); its resection could prevent epileptic seizures with fewer complications. This study evaluates the initial efficacy and safety of anterior temporal lobectomy (ATL), selective amygdalohipppocampectomy (SAH), and parahippocampectomy (PHC) surgical approaches in mTLE-HS. METHODS: A randomized comparative pilot clinical trial (2008-2011) was performed that included patients with mTLE-HS who underwent ATL, trans-T3 SAH, and trans-T3 PHC...
December 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29221514/yield-of-brain-mri-in-clinically-diagnosed-epilepsy-in-the-kingdom-of-bhutan-a-prospective-study
#12
Veronica Bruno, Joshua P Klein, Dechen Nidup, Damber K Nirola, Lhab Tshering, Sonam Deki, Sarah J Clark, Kristin A Linn, Russell T Shinohara, Chencho Dorji, Dili Ram Pokhrel, Ugyen Dema, Farrah J Mateen
BACKGROUND: People with epilepsy (PWE) in low- and middle-income countries may not access the health resources that are considered optimal for epilepsy diagnosis. The diagnostic yield of magnetic resonance imaging (MRI) has not been well studied in these settings. OBJECTIVES: To report the diagnostic yield of brain MRI and identify clinical associations of abnormal MRI findings among PWE in a neurocysticercosis-endemic, resource-limited setting and to identify the proportion and putative structural brain causes of drug-resistant epilepsy...
May 2017: Annals of Global Health
https://www.readbyqxmd.com/read/29183959/stereotactic-eeg-guided-laser-interstitial-thermal-therapy-for-mesial-temporal-lobe-epilepsy
#13
James X Tao, Shasha Wu, Maureen Lacy, Sandra Rose, Naoum P Issa, Carina W Yang, Katherine E Dorociak, Maria Bruzzone, Jisoon Kim, Ahmad Daif, Jason Choi, Vernon L Towle, Peter C Warnke
OBJECTIVE: To determine the outcomes of combined stereo-electroencephalography-guided and MRI-guided stereotactic laser interstitial thermal therapy (LITT) in the treatment of patients with drug-resistant mesial temporal lobe epilepsy (mTLE). METHODS: We prospectively assessed the surgical and neuropsychological outcomes in 21 patients with medically refractory mTLE who underwent LITT at the University of Chicago Medical Center. We further compared the surgical outcomes in patients with and without mesial temporal sclerosis (MTS)...
November 28, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/29175574/surgical-management-and-long-term-seizure-outcome-after-surgery-for-temporal-lobe-epilepsy-associated-with-cerebral-cavernous-malformations
#14
Peng-Fan Yang, Jia-Sheng Pei, Yan-Zeng Jia, Qiao Lin, Hui Xiao, Ting-Ting Zhang, Zhong-Hui Zhong
OBJECTIVE: Operative strategies for cerebral cavernous malformation (CCM)-associated temporal lobe epilepsy and timing of surgical intervention have continued under debate. This study aimed to establish an algorithm to evaluate efficacy of surgical intervention strategies, which maximizes positive surgical outcomes and minimizes post-surgical neurological deficits. METHODS: 47 subjects having undergone operation for CCM-associated temporal lobe epilepsy were retrospectively reviewed...
November 22, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29163352/parahippocampal-involvement-in-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis-a-proof-of-concept-from-memory-guided-saccades
#15
Silvia Colnaghi, Giorgio Beltrami, Guy Poloni, Anna Pichiecchio, Stefano Bastianello, Carlo Andrea Galimberti, Maurizio Versino
Objective: Mesial temporal lobe epilepsy with hippocampal sclerosis (MTLE-HS) may involve extrahippocampal areas of structural damage and dysfunction. The accuracy of medium-term spatial memory can be tested by memory-guided saccades (MGS) to evaluate a functional impairment of the parahippocampal cortex (PHC), while voxel-based morphometry (VBM) analysis can be used to detect a structural damage of the latter region. Methods: MGS with 3- and 30-s memorization delays were compared between 7 patients affected by right MTLE-HS (r-MTLE-HS), 6 patients affected by left MTLE-HS, and 13 healthy controls...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29153613/brain-expression-of-inflammatory-mediators-in-mesial-temporal-lobe-epilepsy-patients
#16
Bárbara Leal, João Chaves, Cláudia Carvalho, Rui Rangel, Agostinho Santos, Andreia Bettencourt, João Lopes, João Ramalheira, Berta M Silva, António Martins da Silva, Paulo P Costa
Neuroinflammation may be central in epileptogenesis. In this study we analysed inflammatory reaction markers in brain tissue of Mesial Temporal Lobe Epilepsy with Hippocampal Sclerosis (MTLE-HS) patients. TLR4, IL-1β and IL-10 gene expression as well as the presence of activated HLA-DR+ microglia was evaluated in 23 patients and 10 cadaveric controls. Inflammation characterized by the presence of HLA-DR(+) microglia and TLR4, IL-1β overexpression was evident in hippocampus and anterior temporal cortex of MTLE-HS patients...
December 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29147777/how-i-do-it-selective-amygdalohippocampectomy-via-a-navigated-temporobasal-approach-when-veins-forbid-elevation-of-the-temporal-lobe
#17
Daniel Delev, Johannes Schramm, Hans Clusmann
BACKGROUND: Selective amygdalohippocampectomy is an effective treatment option for mesial temporal lobe epilepsy associated with hippocampal sclerosis. METHODS: To describe and emphasize potential pitfalls during selective amygdalohippocampectomy via a modified navigated temporobasal approach, in cases, where temporal basal veins hinder the required elevation of the temporal lobe. CONCLUSIONS: Selective amygdalohippocampectomy via navigated temporobasal approach is a safe procedure that can reduce the rate of visual field deficits by avoiding damage of optic radiation...
November 16, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/29100172/earlier-seizure-onset-and-longer-epilepsy-duration-correlate-with-the-degree-of-temporal-hypometabolism-in-patients-with-mesial-temporal-lobe-sclerosis
#18
Carlos Leiva-Salinas, Mark Quigg, W Jeffrey Elias, James T Patrie, Lucia Flors, Nathan B Fountain, Patrice K Rehm
OBJECTIVE: To study the relationship of glucose metabolism and volume of the temporal lobes with age at epilepsy onset, epilepsy duration, and seizure frequency in patients with mesial temporal sclerosis (MTS). METHODS: We evaluated the pre-surgical 18F-fluoro-deoxyglucose (FDG) positron emission tomography (PET) and magnetic resonance imaging (MRI) of 18 patients with epilepsy and MRI findings of MTS, who were seizure-free for at least 2-years after temporal lobectomy...
December 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29094314/volumetric-changes-in-hippocampal-subregions-and-memory-performance-in-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis
#19
Caihong Ji, Lujia Zhu, Cong Chen, Shuang Wang, Leilei Zheng, Hong Li
In the present study we explored the different patterns of volumetric atrophy in hippocampal subregions of patients with left and right mesial temporal lobe epilepsy with hippocampal sclerosis (TLE-HS). Meanwhile, the memory impairment patterns in Chinese-speaking TLE-HS patients and potential influencing factors were also determined. TLE-HS patients (21 left and 17 right) and 21 healthy controls were recruited to complete T2-weighted imaging and verbal/nonverbal memory assessment. The results showed that both left and right TLE-HS patients had overall reduced hippocampal subregion volumes on the sclerotic side, and cornu ammonis sectors (CA1) exhibited maximum atrophy...
November 1, 2017: Neuroscience Bulletin
https://www.readbyqxmd.com/read/29089238/-clinical-and-pathological-definition-of-temporal-medium-epilepsy-subtypes-with-hypocampic-sclerosis
#20
Gonzalo Olivares-Granados, Rosa María Ríos-Pelegrina, Jesús Ruiz-Giménez, Alberto Galdón-Castillo, Teresa Escobar-Delgado, Raimundo García Del Moral
BACKGROUND AND OBJECTIVE: Mesial temporal lobe epilepsy with hippocampal sclerosis is the most common cause of refractory epilepsy, and the most common indication for surgery. Although effective, surgery fails in up to 40% of patients. The objective of our study was to establish a correlation between the different histological subtypes of mesial temporal lobe epilepsy with hippocampal sclerosis and the prognosis, seizures control, side effects and anticonvulsivant drug withdrawal in patients with refractory epilepsy...
October 28, 2017: Neurocirugía
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