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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/29336393/cardiac-surgery-in-a-patient-with-implanted-vagal-nerve-stimulator
#2
Aashish Jain, Dheeraj Arora, Yatin Mehta
The prevalence of epilepsy worldwide is around 0.5%-2% of the population. Antiepileptic medications are the first line of treatment in most of the cases but approximately 25%-30% epilepsy patients are refractory to the single or combination therapy. The surgical option for temporal lobe epilepsy is temporal lobectomy, which has its inherent risk of neurological deficits after the surgery. Patients who are either refractory to combination therapy or do not want surgical temporal lobectomy are the candidates for electrical stimulation therapy...
January 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29336036/the-incidence-and-significance-of-periictal-apnea-in-epileptic-seizures
#3
Nuria Lacuey, Bilal Zonjy, Johnson P Hampson, M R Sandhya Rani, Anita Zaremba, Rup K Sainju, Brian K Gehlbach, Stephan Schuele, Daniel Friedman, Orrin Devinsky, Maromi Nei, Ronald M Harper, Luke Allen, Beate Diehl, John J Millichap, Lisa Bateman, Mark A Granner, Deidre N Dragon, George B Richerson, Samden D Lhatoo
OBJECTIVE: The aim of this study was to investigate periictal central apnea as a seizure semiological feature, its localizing value, and possible relationship with sudden unexpected death in epilepsy (SUDEP) pathomechanisms. METHODS: We prospectively studied polygraphic physiological responses, including inductance plethysmography, peripheral capillary oxygen saturation (SpO2 ), electrocardiography, and video electroencephalography (VEEG) in 473 patients in a multicenter study of SUDEP...
January 16, 2018: Epilepsia
https://www.readbyqxmd.com/read/29331847/longitudinal-hippocampal-and-extra-hippocampal-microstructural-and-macrostructural-changes-following-temporal-lobe-epilepsy-surgery
#4
Cameron A Elliott, Donald W Gross, B Matt Wheatley, Christian Beaulieu, Tejas Sankar
OBJECTIVES: 1) Characterize the evolution of microstructural changes in the contralateral, non-operated hippocampus-using longitudinal diffusion tensor imaging (DTI)-following surgery for temporal lobe epilepsy (TLE). 2) Characterize the downstream extra-hippocampal volumetric changes of the fornix and mammillary bodies after TLE surgery. 3) Examine the relationship between these measures and seizure/cognitive outcome. METHODS: Serial structural and DTI brain MRI scans were collected in 25 TLE patients pre- and post-surgery (anterior temporal lobectomy, ATL - 13; selective amygdalohippocampectomy, SelAH - 12) and in 12 healthy controls...
January 6, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29331845/effect-of-levetiracetam-on-extracellular-amino-acid-levels-in-the-dorsal-hippocampus-of-rats-with-temporal-lobe-epilepsy
#5
Pichardo Macías Luz Adriana, Ramírez Mendiola Blanca Alcira, Contreras García Itzel Jatziri, Zamudio Hernández Sergio Roberto, Chávez Pacheco Juan Luis, Sánchez Huerta Karla Berenice, Mendoza Torreblanca Julieta Griselda
Levetiracetam (LEV) is an anticonvulsant drug with a unique mechanism of action that is not completely understood. However, its activity profile may involve effects on excitatory and/or inhibitory neurotransmission since the primary target of LEV, synaptic vesicle protein 2A, is ubiquitously expressed in all types of synaptic vesicles. Therefore, the objective of the present study was to explore the effect of LEV (300 mg/kg/day for one week, administered via osmotic mini-pumps) on neurotransmitter release and its probable selective effect on extracellular gamma-amino butyric acid (GABA), glutamate (Glu), aspartate (Asp), glutamine (Gln), taurine (Tau) and glycine (Gly) concentrations (using in vivo microdialysis under basal and high-K+ conditions) in the dorsal hippocampus (DH), a region that undergoes major synaptic changes during epilepsy...
January 5, 2018: Epilepsy Research
https://www.readbyqxmd.com/read/29331203/have-we-forgotten-about-forgetting-a-critical-review-of-accelerated-long-term-forgetting-in-temporal-lobe-epilepsy
#6
REVIEW
Anneli Cassel, Michael D Kopelman
Forgetting has been researched for over a century. This literature highlighted how forgetting rates can vary dependent on factors in the design and method. Recent interest in forgetting revived with evidence suggesting that seizures experienced almost immediately after matched learning could accelerate forgetting. This was followed by a growth in forgetting studies in patients with temporal lobe epilepsy (TLE), including a subset of those with transient epileptic amnesia (TEA). These patients have been described as expressing concerns about memory, yet often perform within 'normal' ranges on standard neuropsychological memory assessments...
December 26, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29331082/mechanistic-target-of-rapamycin-complex-1-and-2-in-human-temporal-lobe-epilepsy
#7
Delia M Talos, Leah M Jacobs, Sarah Gourmaud, Carlos A Coto, Hongyu Sun, Kuei-Cheng Lim, Timothy H Lucas, Kathryn A Davis, Maria Martinez-Lage, Frances E Jensen
OBJECTIVE: Temporal lobe epilepsy (TLE) is a chronic epilepsy syndrome defined by seizures and progressive neurological disabilities, including cognitive impairments, anxiety and depression. Here, human TLE specimens were investigated focusing on the mechanistic target of rapamycin (mTOR) Complex 1 (mTORC1) and Complex 2 (mTORC2) activities in the brain, as both pathways may represent unique targets for treatment. METHODS: Surgically resected hippocampal and temporal lobe samples from therapy-resistant TLE patients were analyzed by Western blotting to quantify the expression of established mTORC1 and mTORC2 activity markers and upstream or downstream signaling pathways involving the two complexes...
January 13, 2018: Annals of Neurology
https://www.readbyqxmd.com/read/29327348/respiratory-dysfunction-progresses-with-age-in-kcna1-null-mice-a-model-of-sudden-unexpected-death-in-epilepsy
#8
Kristina A Simeone, Jodi Hallgren, Charles S Bockman, Ankita Aggarwal, Vikash Kansal, Lauren Netzel, Shruthi H Iyer, Stephanie A Matthews, Malavika Deodhar, Peter J Oldenburg, Peter W Abel, Timothy A Simeone
OBJECTIVE: Increased breathing rate, apnea, and respiratory failure are associated with sudden unexpected death in epilepsy (SUDEP). We recently demonstrated the progressive nature of epilepsy and mortality in Kcna1-/- mice, a model of temporal lobe epilepsy and SUDEP. Here we tested the hypothesis that respiratory dysfunction progresses with age in Kcna1-/- mice, thereby increasing risk of respiratory failure and sudden death (SD). METHODS: Respiratory parameters were determined in conscious mice at baseline and following increasing doses of methacholine (MCh) using noninvasive airway mechanics (NAM) systems...
January 12, 2018: Epilepsia
https://www.readbyqxmd.com/read/29325310/-clinical-characteristics-and-whole-exon-sequence-study-of-a-chinese-family-with-autosomal-dominant-lateral-temporal-lobe-epilepsy
#9
C Y Li, H H Yang, R J Lyu, Q Wang
Objective: To explore the genetic characteristics in a Chinese family with autosomal dominant lateral temporal lobe epilepsy (ADLTE) and analyze the correlation between genotype and phenotype. Methods: The natural history, clinical data and peripheral blood sample were collected in all patients and two healthy members of this ADLTE family. Whole exon sequence (WES) analysis strategy was used to explore the underlying mutations. Possible causative genetic variation was further confirmed by direct PCR and Sanger sequencing...
January 1, 2018: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29321710/cytokine-polymorphism-and-hla-genotyping-in-patients-with-temporal-lobe-epilepsy-related-to-hippocampal-sclerosis
#10
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/29320526/temporal-and-spectral-characteristics-of-dynamic-functional-connectivity-between-resting-state-networks-reveal-information-beyond-static-connectivity
#11
Sharon Chiang, Emilian R Vankov, Hsiang J Yeh, Michele Guindani, Marina Vannucci, Zulfi Haneef, John M Stern
Estimation of functional connectivity (FC) has become an increasingly powerful tool for investigating healthy and abnormal brain function. Static connectivity, in particular, has played a large part in guiding conclusions from the majority of resting-state functional MRI studies. However, accumulating evidence points to the presence of temporal fluctuations in FC, leading to increasing interest in estimating FC as a dynamic quantity. One central issue that has arisen in this new view of connectivity is the dramatic increase in complexity caused by dynamic functional connectivity (dFC) estimation...
2018: PloS One
https://www.readbyqxmd.com/read/29317669/selective-targeting-of-scn8a-prevents-seizure-development-in-a-mouse-model-of-mesial-temporal-lobe-epilepsy
#12
Jennifer C Wong, Christopher D Makinson, Tyra Lamar, Qi Cheng, Jeffrey C Wingard, Ernest F Terwilliger, Andrew Escayg
We previously found that genetic mutants with reduced expression or activity of Scn8a are resistant to induced seizures and that co-segregation of a mutant Scn8a allele can increase survival and seizure resistance of Scn1a mutant mice. In contrast, Scn8a expression is increased in the hippocampus following status epilepticus and amygdala kindling. These findings point to Scn8a as a promising therapeutic target for epilepsy and raise the possibility that aberrant overexpression of Scn8a in limbic structures may contribute to some epilepsies, including temporal lobe epilepsy...
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317667/publisher-correction-personalized-structural-image-analysis-in-patients-with-temporal-lobe-epilepsy
#13
Christian Rummel, Nedelina Slavova, Andrea Seiler, Eugenio Abela, Martinus Hauf, Yuliya Burren, Christian Weisstanner, Serge Vulliemoz, Margitta Seeck, Kaspar Schindler, Roland Wiest
A correction to this article has been published and is linked from the HTML version of this paper. The error has been fixed in the paper.
January 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29317612/gamma-oscillatory-activity-in-vitro-a-model-system-to-assess-pathophysiological-mechanisms-of-comorbidity-between-autism-and-epilepsy
#14
D Subramanian, E Pralong, R T Daniel, A G Chacko, R Stoop, K S Babu
Autism spectrum disorder (ASD) and temporal lobe epilepsy exhibit remarkable comorbidity, but for reasons not clearly understood. To reveal a common pathophysiological mechanism, we here describe and characterize an in vitro epileptiform activity in the rat hippocampus that exhibits common features with in vivo activity in rodent ASD models. We discovered the development of this activity in the CA1 region of horizontal slices after prolonged interictal-like epileptiform activity in the CA3 region that was provoked by incubation in high potassium artificial cerebrospinal fluid...
January 10, 2018: Translational Psychiatry
https://www.readbyqxmd.com/read/29317322/flashbulb-memories-is-the-amygdala-central-an-investigation-of-patients-with-amygdalar-damage
#15
Kerstin Spanhel, Kathrin Wagner, Maximilian J Geiger, Isabell Ofer, Andreas Schulze-Bonhage, Birgitta Metternich
Flashbulb memories (FM) are a subgroup of autobiographical memories referring to the circumstances in which a person first heard of a surprising, emotionally arousing event. Patients with temporal lobe epilepsy (TLE) have been reported to be impaired in FM recall. As emotional arousal is central to FM, various authors have suggested a crucial role of the amygdala. However, to date, no studies have directly addressed this hypothesis. In this study, 33 TLE patients and 20 healthy controls (HC) were tested on an FM task twice with a minimum interval of two months...
January 6, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29315101/management-and-return-to-play-considerations-in-an-elite-hockey-player-with-temporal-lobe-epilepsy
#16
Michael J Ellis, Lesley Ritchie, Marco Essig, Marcus Ng, Arturo Tamayo, Demitre Serletis
No abstract text is available yet for this article.
January 2018: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/29306906/-psychiatric-disorders-in-epilepsy-clinical-phenomena
#17
Anna Szucs, Andras Horvath, Daniel Fabo, Geza Szabo, Andrea Kovacs, Peter Halasz
The frequent psychiatric comorbidity in epilepsy compromises the quality of life of those affected, further increasing their suicide risk and the high burden of stigmatisation. Out of adulthood epilepsies, mesio-temporal lobe epilepsy carries the highest cognitive and psychiatric risk, making mental health comorbidities its inherent features. The pathomechanism of the epilepsy-related mental health symptoms and conditions appears to be related to undetected subclinical seizures, postictal exhaustion and inhibition, and the non-REM sleep related interictal epileptic activity...
September 2017: Neuropsychopharmacologia Hungarica
https://www.readbyqxmd.com/read/29306849/verbal-learning-and-memory-outcome-in-selective-amygdalohippocampectomy-versus-temporal-lobe-resection-in-patients-with-hippocampal-sclerosis
#18
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/29305185/predictors-of-outcome-after-surgery-in-134-children-with-drug-resistant-tle
#19
Ashalatha Radhakrishnan, Ramshekhar Menon, Mathew Abraham, George Vilanilam, Suvasini Sharma, Bejoy Thomas, Chandrashekharan Kesavadas, Ajith Cherian, Raviprasad Varma, Sanjeev V Thomas
PURPOSE: To determine the factors predicting seizure outcome in children who underwent anterior temporal lobectomy (ATL) for drug-resistant temporal lobe epilepsy (TLE). METHODS: Among the 664 patients who underwent ATL for TLE from 1995 to 2008, there were 134 children. "Excellent" outcome in them was defined as seizure freedom during the entire follow-up (Engel class I a); "good outcome", if in remission last 2 years, and the rest as "unfavorable outcome". To identify the potential predictors of seizure recurrence, the attributes of recurred and non-recurred groups was compared by univariate and multivariate analysis...
January 2, 2018: Epilepsy Research
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
#20
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
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