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https://www.readbyqxmd.com/read/28931250/minimally-invasive-transpalpebral-endoscopic-assisted-amygdalohippocampectomy
#1
Mauricio Mandel, Eberval Gadelha Figueiredo, Suzana Abramovicz Mandel, Rafael Tutihashi, Manoel Jacobsen Teixeira
BACKGROUND: Although anterior temporal lobectomy may be a definitive surgical treatment for epileptic patients with mesial temporal sclerosis, it often results in verbal, visual, and cognitive dysfunction. Studies have consistently reported the advantages of selective procedures compared with a standard anterior temporal lobectomy, mainly in terms of neuropsychological outcomes. OBJECTIVE: To describe a new technique to perform a selective amygdalohippocampectomy (SAH) through a transpalpebral approach with endoscopic assistance...
February 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28928072/orbitofrontal-epilepsy-case-series-and-review-of-literature
#2
Imane Samah Chibane, Olivier Boucher, François Dubeau, Thi Phuoc Yen Tran, Ismail Mohamed, Richard McLachlan, R Mark Sadler, Richard Desbiens, Lionel Carmant, Dang Khoa Nguyen
BACKGROUND: Orbitofrontal epilepsy (OFE) is less known and is poorly characterized in comparison with temporal lobe epilepsy, partly because it is rare and possibly because it is unrecognized and therefore underestimated. OBJECTIVE: This paper aimed to better characterize seizure semiology, presurgical findings, and surgical outcomes in patients with OFE. METHODS: We retrospectively reviewed all confidently established OFE cases from six Canadian epilepsy monitoring units between 1988 and 2014, and in the literature between 1972 and 2017...
September 16, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28927701/an-epileptologist-s-view-seizure-related-outcomes-after-radiofrequency-ablation-for-mesial-temporal-lobe-epilepsy
#3
REVIEW
Zdeněk Vojtěch, Michaela Stará
In this article, we provide an overview of the reasons for the introduction of less invasive treatment modalities in the management of intractable mesial temporal lobe epilepsy (mTLE). We summarize our published research on stereotactic amygdalohippocampectomy (SAHE) and recalculate our data for the patients' last visit. In our previous work, we found that patients achieved long-term seizure-free outcomes in 70.5%. Re-analysis of results in a subgroup of patient who were diagnosed and followed-up at Epilepsy Center, Na Homolce Hospital, Prague, indicate that these outcomes are durable...
September 12, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28923408/altered-functional-connectivity-in-mesial-temporal-lobe-epilepsy
#4
Hana Burianová, Nahla L Faizo, Marcus Gray, Julia Hocking, Graham Galloway, David Reutens
Growing evidence of altered functional connectivity suggests that mesial temporal lobe epilepsy (mTLE) alters not only hippocampal networks, but also a number of resting state networks. These highly coherent, yet functionally distinct brain circuits interact dynamically with each other in order to mediate consciousness, memory, and attention. However, little is currently known about the modulation of these networks by epileptiform activity, such as interictal spikes and seizures. The objective of the study was to use simultaneous EEG-fMRI to investigate functional connectivity in three resting state networks: default mode network (DMN), salience network (SN), and dorsal attentional network (DAN) in patients with mTLE compared to a healthy cohort, and in relation to the onset of interictal spikes and the period immediately prior to the spikes...
September 8, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28922876/visual-deficit-from-laser-interstitial-thermal-therapy-for-temporal-lobe-epilepsy-anatomical-considerations
#5
Walter J Jermakowicz, Michael E Ivan, Iahn Cajigas, Ramses Ribot, Ignacio Jusue-Torres, Mehul B Desai, Armando Ruiz, Pierre-Francois D'Haese, Andres M Kanner, Jonathan R Jagid
BACKGROUND: Laser interstitial thermal therapy (LITT) is quickly emerging as an effective surgical therapy for temporal lobe epilepsy (TLE). One of the most frequent complications of the procedure is postoperative visual field cuts, but the physiopathology of these deficits is unknown. OBJECTIVE: To evaluate potential causes of visual deficits after LITT for TLE in an attempt to minimize this complication. METHODS: This retrospective chart review compares the case of a 24-year-old male who developed homonymous hemianopsia following LITT for TLE to 17 prior patients who underwent the procedure and suffered no visual deficit...
October 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28921161/deep-brain-stimulation-for-refractory-temporal-lobe-epilepsy-a-systematic-review-and-meta-analysis-with-an-emphasis-on-alleviation-of-seizure-frequency-outcome
#6
Bowen Chang, Jiwen Xu
OBJECTIVE: Conflicting conclusions have been reported regarding predictors of deep brain stimulation (DBS) outcome in patients with refractory temporal lobe epilepsy (TLE). The main goal of this meta-analysis study was to identify possible predictors of remarkable seizure reduction (RSR). METHODS: We conducted a comprehensive search of English-language literature published since 1990 and indexed in PubMed, Embase, and the Cochrane Library that addressed seizure outcomes in patients who underwent DBS for refractory TLE...
September 18, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28919879/automated-online-quantification-method-for-18-f-fdg-positron-emission-tomography-ct-improves-detection-of-the-epileptogenic-zone-in-patients-with-pharmacoresistant-epilepsy
#7
Vanessa Cristina Mendes Coelho, Marcia E Morita, Barbara J Amorim, Celso Darío Ramos, Clarissa L Yasuda, Helder Tedeschi, Enrico Ghizoni, Fernando Cendes
AIMS: To assess the validity of an online method to quantitatively evaluate cerebral hypometabolism in patients with pharmacoresistant focal epilepsy as a complement to the visual analysis of the (18)F-FDG positron emission tomography (PET)/CT exam. METHODS: A total of 39 patients with pharmacoresistant epilepsy and probable focal cortical dysplasia [22 patients with frontal lobe epilepsy (FLE) and 17 with temporal lobe epilepsy (TLE)] underwent a presurgical evaluation including EEG, video-EEG, MRI, and (18)F-FDG PET/CT...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28912704/reliability-of-eeg-measures-of-interaction-a-paradigm-shift-is-needed-to-fight-the-reproducibility-crisis
#8
Yvonne Höller, Andreas Uhl, Arne Bathke, Aljoscha Thomschewski, Kevin Butz, Raffaele Nardone, Jürgen Fell, Eugen Trinka
Measures of interaction (connectivity) of the EEG are at the forefront of current neuroscientific research. Unfortunately, test-retest reliability can be very low, depending on the measure and its estimation, the EEG-frequency of interest, the length of the signal, and the population under investigation. In addition, artifacts can hamper the continuity of the EEG signal, and in some clinical situations it is impractical to exclude artifacts. We aimed to examine factors that moderate test-retest reliability of measures of interaction...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28912687/alterations-in-properties-of-glutamatergic-transmission-in-the-temporal-cortex-and-hippocampus-following-pilocarpine-induced-acute-seizures-in-wistar-rats
#9
Dmitry V Amakhin, Sergey L Malkin, Julia L Ergina, Kirill A Kryukov, Ekaterina A Veniaminova, Olga E Zubareva, Aleksey V Zaitsev
Temporal lobe epilepsy (TLE) is the most common type of focal epilepsy in humans, and is often developed after an initial precipitating brain injury. This form of epilepsy is frequently resistant to pharmacological treatment; therefore, the prevention of TLE is the prospective approach to TLE therapy. The lithium-pilocarpine model in rats replicates some of the main features of TLE in human, including the pathogenic mechanisms of cell damage and epileptogenesis after a primary brain injury. In the present study, we investigated changes in the properties of glutamatergic transmission during the first 3 days after pilocarpine-induced acute seizures in Wistar rats (PILO-rats)...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28912503/systematic-review-and-meta-analysis-of-differentially-expressed-mirnas-in-experimental-and-human-temporal-lobe-epilepsy
#10
A Korotkov, J D Mills, J A Gorter, E A van Vliet, E Aronica
Temporal lobe epilepsy (TLE) is a common chronic neurological disease in humans. A number of studies have demonstrated differential expression of miRNAs in the hippocampus of humans with TLE and in animal models of experimental epilepsy. However, the dissimilarities in experimental design have led to largely discordant results across these studies. Thus, a comprehensive comparison is required in order to better characterize miRNA profiles obtained in various post-status epilepticus (SE) models. We therefore created a database and performed a meta-analysis of differentially expressed miRNAs across 3 post-SE models of epileptogenesis (electrical stimulation, pilocarpine and kainic acid) and human TLE with hippocampal sclerosis (TLE-HS)...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28904824/a-case-of-unruptured-aneurysm-of-the-internal-carotid-artery-presenting-as-olfactory-hallucinations
#11
Jiro Akimoto, Norio Ichimasu, Rei Haraoka, Shinjiro Fukami, Michihiro Kohno
BACKGROUND: Olfactory hallucination, a symptom of medial temporal lobe epilepsy, is rarely associated with unruptured intracranial aneurysms. CASE DESCRIPTION: We encountered this situation in a 70-year-old woman with an unruptured aneurysm at the bifurcation of the internal carotid and posterior communicating artery. We were able to achieve epileptic control by craniotomy clipping and medial temporal lesionectomy. CONCLUSION: According to our knowledge, previous reports are limited to cases of large middle cerebral artery aneurysms compressing the lateral orbitofrontal cortex, and this is apparently the first report of a case where olfactory hallucinations occurred from direct stimulation of the entorhinal cortex by an internal carotid and posterior communicating artery bifurcation aneurysm...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28899551/relationship-between-neuronal-network-architecture-and-naming-performance-in-temporal-lobe-epilepsy-a-connectome-based-approach-using-machine-learning
#12
REVIEW
B C Munsell, G Wu, J Fridriksson, K Thayer, N Mofrad, N Desisto, D Shen, L Bonilha
Impaired confrontation naming is a common symptom of temporal lobe epilepsy (TLE). The neurobiological mechanisms underlying this impairment are poorly understood but may indicate a structural disorganization of broadly distributed neuronal networks that support naming ability. Importantly, naming is frequently impaired in other neurological disorders and by contrasting the neuronal structures supporting naming in TLE with other diseases, it will become possible to elucidate the common systems supporting naming...
September 9, 2017: Brain and Language
https://www.readbyqxmd.com/read/28896001/-barriers-impeding-access-to-epilepsy-surgery-a-review-of-the-literature
#13
REVIEW
L D Ladino, V Benjumea-Cuartas, J Vargas-Osorio, L V Villamil-Osorio, L Hernandez-Vanegas, I E Martinez-Juarez, J F Tellez-Zenteno
Drug-resistant epilepsy, a chronic condition with long-term consequences can be treated with surgery. The efficacy and safety of surgery for temporal lobe epilepsy have been established through a large number of retrospective and prospective cohort studies and two randomized controlled clinical trials. Despite the excellent outcomes reported after surgery, the literature suggests that this procedure is an underutilized treatment. While evidence is lacking as to why epilepsy surgery is underused, cited reasons include: failure of primary care physicians and neurologists to provide information and identify patients who could be referred for surgery; different levels of technology at various centers, resulting in different candidate selection strategies; the belief that epilepsy surgery is a risky procedure and that it should be only viewed as the last option; patient preference to avoid surgery; parents wanting to wait until their child is old enough to participate in the decision-making process regarding surgery; unwillingness of insurers to cover the expenses associated with presurgical evaluations or lack of insurance; racial and social disparities, among others...
September 16, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28890320/neuropsychologist-s-re-view-resective-versus-ablative-amygdalohippocampectomies
#14
REVIEW
Juri-Alexander Witt, Christian Hoppe, Christoph Helmstaedter
Pharmacoresistant mesial temporal lobe epilepsy (mTLE) represents the major indication for epilepsy surgery. Since epilepsy surgery is an elective treatment option, preserving cognition is a high priority. Given the essential role of temporomesial structures in declarative long-term memory formation, surgical treatment for mTLE is primarily associated with a risk of material-specific memory decline, but other cognitive domains may be affected as well. The major determinants for the neuropsychological outcome are the functional integrity of surgically affected tissues, the functional reserve capacities of the remnant brain, the postoperative seizure outcome, as well as the quantitative and qualitative changes of antiepileptic drugs...
September 1, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28888331/hamartia-in-hippocampal-sclerosis-associated-mesial-temporal-lobe-epilepsy
#15
REVIEW
K L Gawelek, J M Gales, R A Prayson
Hamartia are small collections of rounded glioneuronal cells that are thought to be due to aberrant cell migration. Their presence has been recognized in association with mesial temporal lobe epilepsy; their prevalence among cases of hippocampal sclerosis (HS) and any potential association with patient demographics and outcomes is unknown. This study examines hamartia in a series of 292 patients with pathologically confirmed HS. Medical records were reviewed for pertinent patient clinical information (follow-up mean 5years)...
September 6, 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28888215/the-role-of-presurgical-eeg-parameters-and-of-reoperation-for-seizure-outcome-in-temporal-lobe-epilepsy
#16
B Schmeiser, J Zentner, B J Steinhoff, A Brandt, A Schulze-Bonhage, E Kogias, T Hammen
PURPOSE: After surgery for intractable mesiotemporal lobe epilepsy (mTLE) seizures recur in 30-40%. One predictor for seizure recurrence is the distribution of seizure onset and interictal epileptiform discharges (IED). Our study focused on lateralization and extent of epileptiform activity regarding postoperative seizure persistence and the effect of reoperation. METHODS: This study comprises 426 consecutive patients operated for intractable mTLE. Impact of preoperative seizure onset and IED on the persistence of seizures and results of reoperation were analyzed...
September 6, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28888031/disconnection-of-hippocampal-networks-contributes-to-memory-dysfunction-in-individuals-with-temporal-lobe-epilepsy
#17
Travis R Stoub, Ada V Chicharro, Christopher L Grote, Andres M Kanner
A deficit in declarative memory function is common among individuals with temporal lobe epilepsy. The purpose of this study is to evaluate the relationship between the volume of the hippocampus, entorhinal cortex along with the surrounding parahippocampal white matter and memory performance in those with temporal lobe epilepsy. T1 weighted MRI scans were acquired using a 3-D pulse sequence in 50 individuals with temporal lobe epilepsy. Hippocampal and entorhinal cortex volumes were derived by manually tracing consecutive coronal slices aligned perpendicular to the long axis of the hippocampus...
September 9, 2017: Hippocampus
https://www.readbyqxmd.com/read/28883807/comparing-cat12-and-vbm8-for-detecting-brain-morphological-abnormalities-in-temporal-lobe-epilepsy
#18
Farnaz Farokhian, Iman Beheshti, Daichi Sone, Hiroshi Matsuda
The identification of the brain morphological alterations that play important roles in neurodegenerative/neurological diseases will contribute to our understanding of the causes of these diseases. Various automated software programs are designed to provide an automatic framework to detect brain morphological changes in structural magnetic resonance imaging (MRI) data. A voxel-based morphometry (VBM) analysis can also be used for the detection of brain volumetric abnormalities. Here, we compared gray matter (GM) and white matter (WM) abnormality results obtained by a VBM analysis using the Computational Anatomy Toolbox (CAT12) via the current version of Statistical Parametric Mapping software (SPM12) with the results obtained by a VBM analysis using the VBM8 toolbox implemented in the older software SPM8, in adult temporal lobe epilepsy (TLE) patients with (n = 51) and without (n = 57) hippocampus sclerosis (HS), compared to healthy adult controls (n = 28)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28883420/personalized-structural-image-analysis-in-patients-with-temporal-lobe-epilepsy
#19
Christian Rummel, Nedelina Slavova, Andrea Seiler, Eugenio Abela, Martinus Hauf, Yuliya Burren, Christian Weisstanner, Serge Vulliemoz, Margitta Seeck, Kaspar Schindler, Roland Wiest
Volumetric and morphometric studies have demonstrated structural abnormalities related to chronic epilepsies on a cohort- and population-based level. On a single-patient level, specific patterns of atrophy or cortical reorganization may be widespread and heterogeneous but represent potential targets for further personalized image analysis and surgical therapy. The goal of this study was to compare morphometric data analysis in 37 patients with temporal lobe epilepsies with expert-based image analysis, pre-informed by seizure semiology and ictal scalp EEG...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28875534/post-mortem-dti-reveals-altered-hippocampal-connectivity-in-wild-sea-lions-diagnosed-with-chronic-toxicosis-from-algal-exposure
#20
Peter F Cook, Gregory S Berns, Kathleen Colegrove, Shawn Johnson, Frances Gulland
Hundreds of wild California sea lions (Zalophus californianus) exposed to the algal neurotoxin domoic acid are treated in veterinary rehabilitation centers each year. Common chronic effects of toxic exposure in these animals are seizures and hippocampal damage, and they have been proposed as a natural animal model for human epilepsy. Humans with medial temporal lobe epilepsy present with white matter pathology in a number of tracts including the fornix and increased structural connectivity between the hippocampus and thalamus...
September 5, 2017: Journal of Comparative Neurology
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