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mesial temporal sclerosis

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https://www.readbyqxmd.com/read/29153613/brain-expression-of-inflammatory-mediators-in-mesial-temporal-lobe-epilepsy-patients
#1
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
#2
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
#3
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 (18)F-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...
October 28, 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
#4
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
#5
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
https://www.readbyqxmd.com/read/29070752/a-surgical-case-of-mesial-temporal-lobe-epilepsy-associated-with-hippocampal-sclerosis-and-traumatic-neocortical-lesion
#6
Yu Kitazawa, Kazutaka Jin, Masaki Iwasaki, Hiroyoshi Suzuki, Fumiaki Tanaka, Nobukazu Nakasato
A 26-year-old right-handed woman, with a history of left temporal lobe contusion caused by a fall at the age of 9 months, started to have complex partial seizures with oral automatism at the age of 7 years. The seizures occurred once or twice a month despite combination therapy with several antiepileptic agents. Her history and imaging studies suggested the diagnosis of epilepsy arising from traumatic neocortical temporal lesion. Comprehensive assessment including long-term video EEG monitoring, MRI, FDG-PET, MEG, and neuropsychological evaluation was performed at the age of 26 years...
October 26, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/29053037/possible-autoantibody-negative-limbic-encephalitis-after-anterior-temporal-lobectomy-for-hippocampal-sclerosis
#7
Sara Casciato, Alfredo D'Aniello, Addolorata Mascia, Pier Paolo Quarato, Marco De Risi, Liliana G Grammaldo, Vincenzo Esposito, Marco Zoccarato, Giancarlo Di Gennaro
Amnestic syndromes are acknowledged to be associated to bilateral hippocampal damage. We briefly report the case of a young man who underwent anterior left temporal lobectomy for a medically refractory temporal lobe epilepsy due to hippocampal sclerosis with an excellent seizure and neuropsychological outcome. Approximately 10 years later, he presented with a subacute severe global amnesia and MRI findings of a damage involving the contralateral mesial temporal lobe structures. A diagnosis of a possible autoimmune encephalitis was made...
October 20, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29040828/neuropsychological-functioning-and-brain-energetics-of-drug-resistant-mesial-temporal-lobe-epilepsy-patients
#8
Camila Moreira Osório, Alexandra Latini, Rodrigo Bainy Leal, Maria Emília Rodrigues de Oliveira Thais, Helena Dresch Vascouto, Aline Pertile Remor, Mark William Lopes, Marcelo Neves Linhares, Juliana Ben, Roberta de Paula Martins, Rui Daniel Prediger, Alexandre Ademar Hoeller, Hans Joachim Markowitsch, Peter Wolf, Kátia Lin, Roger Walz
Interictal hypometabolism is commonly measured by 18-fluoro-deoxyglucose Positron Emission Tomography (FDG-PET) in the temporal lobe of patients with mesial temporal lobe epilepsy (MTLE-HS). Left temporal lobe interictal FDG-PET hypometabolism has been associated with verbal memory impairment, while right temporal lobe FDG-PET hypometabolism is associated with nonverbal memory impairment. The biochemical mechanisms involved in these findings remain unknown. In comparison to healthy controls (n=21), surgically treated patients with MTLE-HS (n=32, left side=17) had significant lower scores in the Rey Auditory Verbal Learning Test (RAVLT retention and delayed), Logical Memory II (LMII), Boston Naming test (BNT), Letter Fluency and Category Fluency...
October 12, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29023170/ampa-receptors-and-perampanel-behind-selected-epilepsies-current-evidence-and-future-perspectives
#9
Carlo Di Bonaventura, Angelo Labate, Marta Maschio, Stefano Meletti, Emilio Russo
The alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) receptors are the major mediators of glutamate-mediated excitatory neurotransmission, and are critical for synchronization and spread of epileptic activity. Areas covered: AMPA receptor antagonists have been also developed as antiepileptic drugs and perampanel (PER) is the first highly selective, non-competitive AMPA-type glutamate receptor antagonist that is available on the market. It is approved as adjunctive therapy for the treatment of partial-onset seizures with or without secondary generalization, and for primary generalized tonic-clonic seizures in idiopathic generalized epilepsy, in patients aged ≥ 12 years...
October 17, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/29017080/prognostic-significance-of-postoperative-spikes-varied-in-different-surgical-procedures-for-mesial-temporal-sclerosis
#10
Hsiang-Yu Yu, Sanford P C Hsu, Chun-Fu Lin, Yang-Hsin Shih, Der-Jen Yen, Shang-Yeong Kwan, Chien Chen, Chien-Chen Chou
PURPOSE: We conducted this study to compare the occurrence and prognostic significance of early postoperative interictal epileptiform discharges (IEDs) on seizure outcomes between corticoamygdalohippocampectomy (CAH) and selective amygdalohippocampectomy (SAH). METHODS: We reviewed our database of patients who had epilepsy surgery with hippocampus atrophy or signal changes on brain MRIs and pathology of mesial temporal sclerosis. One hundred and seventy-seven CAH and 39 SAH patients were enrolled...
October 3, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28988523/immunopathology-in-drug-resistant-mesial-temporal-lobe-epilepsy-with-different-types-of-hippocampal-sclerosis
#11
F Irsel Tezer, Aysegul Firat, Erdem Tuzun, Isik Unal, Figen Soylemezoglu, Burcak Bilginer, Figen Kaymaz, Kader K Oguz, Serap Saygi
PURPOSE: There is evidence that autoimmunity has a specific role in temporal lobe seizures of limbic encephalitis patients. Our aim in this study was to investigate any histopathological clues of autoimmune process in refractory temporal lobe epilepsy (TLE) patients with different pathologically proven hippocampal sclerosis (HS) types. METHODS: 22 patients who had undergone to epilepsy surgery due to mesial TLE-HS were included. The sera of patients are tested for neuronal antibodies to NMDAR, LGI1, CASPR2, AMPAR, GABABR and GAD...
October 7, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/28941835/pharmacoresistance-with-newer-anti-epileptic-drugs-in-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis
#12
Michael S Pohlen, Jingxiao Jin, Ronnie S Tobias, Atul Maheshwari
This study aims to evaluate the overall prognosis, prognostic factors, and efficacy of treatment in patients with mesial temporal lobe epilepsy with hippocampal sclerosis (MTLE-HS) who have access to third generation anti-epileptic drugs but not to epilepsy surgery. Eighty-five MTLE-HS patients were retrospectively placed into a seizure-free (seizure-free for >1year) or drug-resistant group, and the two groups were compared on the basis of age, sex, age at onset of seizures, duration of epilepsy, side of lesion, handedness, EEG findings, history of CNS infection, history of febrile convulsions, history of head trauma, history of cognitive impairment, family history of seizures, number of current anti-epileptic drugs (AEDs), total number of AED trials, and presence of individual AEDs...
November 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28931250/minimally-invasive-transpalpebral-endoscopic-assisted-amygdalohippocampectomy
#13
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/28899220/diagnosis-of-mesial-temporal-sclerosis-sensitivity-specificity-and-predictive-values-of-the-quantitative-analysis-of-magnetic-resonance-imaging
#14
Ana María Granados Sánchez, Juan Felipe Orejuela Zapata
In the diagnosis of mesial temporal sclerosis (MTS), sensitivity, specificity and predictive values of qualitative assessment using conventional magnetic resonance imaging are low, mainly in mild or bilateral atrophy. Quantitative analysis may improve this performance. We evaluated the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of quantitative analysis using the hippocampal volumetric index (HVI) and hippocampal asymmetry index (HAI) compared with qualitative assessment in the MTS diagnosis...
January 1, 2017: Neuroradiology Journal
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/28884035/cooccurrence-of-chorea-acanthocytosis-and-mesial-temporal-sclerosis-a-possible-role-of-caudate-nucleus
#16
Mehri Salari, Alexander C Lehn, Masoud Etemadifar, Seyed Amir Hejazi
Chorea-acanthocytosis (ChAc) is an orphan disease, caused by mutations on chromosome 9. Epileptic seizures of mesial temporal origin can be a predominant symptom. We report on a 29-year-old woman with ChAc and bilateral MTS. Previously, few patients with coexisting ChAc and MTS were reported. The underlying pathophysiology is unknown, and further studies are needed.
2017: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/28883807/comparing-cat12-and-vbm8-for-detecting-brain-morphological-abnormalities-in-temporal-lobe-epilepsy
#17
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/28873362/impact-of-hippocampal-subfield-histopathology-in-episodic-memory-impairment-in-mesial-temporal-lobe-epilepsy-and-hippocampal-sclerosis
#18
Sandra Mara Comper, Anaclara Prada Jardim, Jeana Torres Corso, Larissa Botelho Gaça, Maria Helena Silva Noffs, Carmen Lúcia Penteado Lancellotti, Esper Abrão Cavalheiro, Ricardo Silva Centeno, Elza Márcia Targas Yacubian
OBJECTIVE: The objective of the study was to analyze preoperative visual and verbal episodic memories in a homogeneous series of patients with mesial temporal lobe epilepsy (MTLE) and unilateral hippocampal sclerosis (HS) submitted to corticoamygdalohippocampectomy and its association with neuronal cell density of each hippocampal subfield. METHODS: The hippocampi of 72 right-handed patients were collected and prepared for histopathological examination. Hippocampal sclerosis patterns were determined, and neuronal cell density was calculated...
September 2, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28857179/comparative-effectiveness-of-antiepileptic-drugs-in-patients-with-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis
#19
COMPARATIVE STUDY
Ganna Androsova, Roland Krause, Mojgansadat Borghei, Merel Wassenaar, Pauls Auce, Andreja Avbersek, Felicitas Becker, Bianca Berghuis, Ellen Campbell, Antonietta Coppola, Ben Francis, Stefan Wolking, Gianpiero L Cavalleri, John Craig, Norman Delanty, Bobby P C Koeleman, Wolfram S Kunz, Holger Lerche, Anthony G Marson, Josemir W Sander, Graeme J Sills, Pasquale Striano, Federico Zara, Sanjay M Sisodiya, Chantal Depondt
OBJECTIVE: Mesial temporal lobe epilepsy with hippocampal sclerosis (MTLE-HS) is a common epilepsy syndrome that is often poorly controlled by antiepileptic drug (AED) treatment. Comparative AED effectiveness studies in this condition are lacking. We report retention, efficacy, and tolerability in a cohort of patients with MTLE-HS. METHODS: Clinical data were collected from a European database of patients with epilepsy. We estimated retention, 12-month seizure freedom, and adverse drug reaction (ADR) rates for the 10 most commonly used AEDs in patients with MTLE-HS...
October 2017: Epilepsia
https://www.readbyqxmd.com/read/28841245/marked-accumulation-of-oligodendroglia-like-cells-in-temporal-lobe-epilepsy-with-amygdala-enlargement-and-hippocampal-sclerosis
#20
Daichi Sone, Masako Ikemura, Yuko Saito, Go Taniguchi, Naoto Kunii
Although an increasing number of cases of temporal lobe epilepsy (TLE) with ipsilateral amygdala enlargement (AE) have been reported, there are few pathological reports, and no clear consensus has been established. Oligodendroglia or oligodendroglia-like cells (OLCs) have recently attracted attention in epilepsy studies. Here, we report the clinical and pathological findings of a 40-year-old male TLE patient with AE and hippocampal sclerosis, in whom histopathological study demonstrated remarkable clustering of OLCs around the uncus...
August 25, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
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