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mesial temporal sclerosis

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https://www.readbyqxmd.com/read/28441637/subtle-pathological-changes-in-neocortical-temporal-lobe-epilepsy
#1
Juan G Ochoa, Diana Hentgarden, Audrey Paulzak, Melissa Ogden, Richard Pryson, Markus Lamle, Walter G Rusyniak
This was a prospective observational study to correlate the clinical symptoms, electrophysiology, imaging, and surgical pathology of patients with temporal lobe epilepsy (TLE) without hippocampal sclerosis. We selected consecutive patients with TLE and normal MRI undergoing temporal lobe resection between April and September 2015. Clinical features, imaging, and functional data were reviewed. Intracranial monitoring and language mapping were performed when it was required according to our team recommendation...
April 22, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28427841/localized-shape-abnormalities-in-the-thalamus-and-pallidum-are-associated-with-secondarily-generalized-seizures-in-mesial-temporal-lobe-epilepsy
#2
Linglin Yang, Hong Li, Lujia Zhu, Xinfeng Yu, Bo Jin, Cong Chen, Shan Wang, Meiping Ding, Minming Zhang, Zhong Chen, Shuang Wang
Mesial temporal lobe epilepsy (mTLE) is a common type of drug-resistant epilepsy and secondarily generalized tonic-clonic seizures (sGTCS) have devastating consequences for patients' safety and quality of life. To probe the mechanism underlying the genesis of sGTCS, we investigated the structural differences between patients with and without sGTCS in a cohort of mTLE with radiologically defined unilateral hippocampal sclerosis. We performed voxel-based morphometric analysis of cortex and vertex-wise shape analysis of subcortical structures (the basal ganglia and thalamus) on MRI of 39 patients (21 with and 18 without sGTCS)...
April 17, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28398599/hippocampal-sclerosis-and-mesial-temporal-lobe-epilepsy-in-chorea-acanthocytosis-a-case-with-clinical-pathologic-and-genetic-evaluation
#3
Karin Mente, Sun A Kim, Christopher Grunseich, Marco M Hefti, John F Crary, Adrian Danek, Barbara I Karp, Ruth H Walker
Chorea-acanthocytosis (ChAc) is an autosomal recessive neurodegenerative disease associated with mutations in VPS13A that encodes the protein chorein. ChAc is characterized by progressive chorea, dystonia, and psychiatric symptoms, developing in young adulthood, often with acanthocytosis in peripheral blood. Tongue protrusion, or feeding dystonia, is common, as are seizures and neuropathy [1]. On neuropathology, there is basal ganglia atrophy, neuronal loss, and gliosis, especially in the caudate nucleus [2]...
April 11, 2017: Neuropathology and Applied Neurobiology
https://www.readbyqxmd.com/read/28398014/brain-responsive-neurostimulation-in-patients-with-medically-intractable-mesial-temporal-lobe-epilepsy
#4
Eric B Geller, Tara L Skarpaas, Robert E Gross, Robert R Goodman, Gregory L Barkley, Carl W Bazil, Michael J Berg, Gregory K Bergey, Sydney S Cash, Andrew J Cole, Robert B Duckrow, Jonathan C Edwards, Stephan Eisenschenk, James Fessler, Nathan B Fountain, Alicia M Goldman, Ryder P Gwinn, Christianne Heck, Aamar Herekar, Lawrence J Hirsch, Barbara C Jobst, David King-Stephens, Douglas R Labar, James W Leiphart, W Richard Marsh, Kimford J Meador, Eli M Mizrahi, Anthony M Murro, Dileep R Nair, Katherine H Noe, Yong D Park, Paul A Rutecki, Vicenta Salanova, Raj D Sheth, Donald C Shields, Christopher Skidmore, Michael C Smith, David C Spencer, Shraddha Srinivasan, William Tatum, Paul C Van Ness, David G Vossler, Robert E Wharen, Gregory A Worrell, Daniel Yoshor, Richard S Zimmerman, Kathy Cicora, Felice T Sun, Martha J Morrell
OBJECTIVE: Evaluate the seizure-reduction response and safety of mesial temporal lobe (MTL) brain-responsive stimulation in adults with medically intractable partial-onset seizures of mesial temporal lobe origin. METHODS: Subjects with mesial temporal lobe epilepsy (MTLE) were identified from prospective clinical trials of a brain-responsive neurostimulator (RNS System, NeuroPace). The seizure reduction over years 2-6 postimplantation was calculated by assessing the seizure frequency compared to a preimplantation baseline...
April 11, 2017: Epilepsia
https://www.readbyqxmd.com/read/28395287/interleukin-1%C3%AE-plays-a-pivotal-role-via-the-pi3k-akt-mtor-signaling-pathway-in-the-chronicity-of-mesial-temporal-lobe-epilepsy
#5
Zhaohua Xiao, Jing Peng, Na Gan, Ahmed Arafat, Fei Yin
OBJECTIVE: Mesial temporal lobe epilepsy (MTLE) is the most common type of refractory epilepsy. It is often associated with hippocampal sclerosis, which is histopathologically characterized by selective neuron loss, mossy fiber sprouting, and synapse reconstruction, and is the primary cause of refractory epilepsy. Its mechanism has not been fully elucidated. Substantial evidence now supports that inflammatory pathways are activated in epilepsy foci. We have confirmed that the interleukin-1β (IL-1β) level is involved in the epileptogenesis of MTLE, and we further investigated how it works in its chronicity in this study...
April 11, 2017: Neuroimmunomodulation
https://www.readbyqxmd.com/read/28389411/complications-after-surgery-for-mesial-temporal-lobe-epilepsy-associated-with-hippocampal-sclerosis
#6
Bertrand Mathon, Vincent Navarro, Franck Bielle, Vi-Huong Nguyen-Michel, Alexandre Carpentier, Michel Baulac, Philippe Cornu, Claude Adam, Sophie Dupont, Stéphane Clemenceau
BACKGROUND: Hippocampal sclerosis is the most common cause of drug-resistant epilepsy amenable for surgical treatment and seizure control. This study aimed to analyze morbidities related to surgery of mesial temporal lobe epilepsy associated with hippocampal sclerosis and to identify possible risk factors for complications. METHODS: A retrospective analysis of postoperative complications was made for 389 operations performed between 1990 and 2015 on patients aged 15 to 67 years (mean 36...
April 4, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28386927/microsurgical-techniques-in-temporal-lobe-epilepsy
#7
Mario A Alonso Vanegas, Sean M Lew, Michiharu Morino, Stenio A Sarmento
Temporal lobe resection is the most prevalent epilepsy surgery procedure. However, there is no consensus on the best surgical approach to treat temporal lobe epilepsy. Complication rates are low and efficacy is very high regarding seizures after such procedures. However, there is still ample controversy regarding the best surgical approach to warrant maximum seizure control with minimal functional deficits. We describe the most frequently used microsurgical techniques for removal of both the lateral and mesial temporal lobe structures in the treatment of medically intractable temporal lobe epilepsy (TLE) due to mesial temporal sclerosis (corticoamygdalohippocampectomy and selective amygdalohippocampectomy)...
April 2017: Epilepsia
https://www.readbyqxmd.com/read/28384161/microrna-hsa-mir-134-is-a-circulating-biomarker-for-mesial-temporal-lobe-epilepsy
#8
Simoni H Avansini, Beatriz Pereira de Sousa Lima, Rodrigo Secolin, Marilza L Santos, Ana Carolina Coan, André S Vieira, Fábio R Torres, Benilton S Carvalho, Marina K M Alvim, Márcia E Morita, Clarissa L Yasuda, Luciana R Pimentel-Silva, Danyella B Dogini, Fabio Rogerio, Fernando Cendes, Iscia Lopes-Cendes
Epilepsy is misdiagnosed in up to 25% of patients, leading to serious and long-lasting consequences. Recently, circulating microRNAs have emerged as potential biomarkers in a number of clinical scenarios. The purpose of this study was to identify and to validate circulating microRNAs that could be used as biomarkers in the diagnosis of epilepsy. Quantitative real-time PCR was used to measure plasma levels of three candidate microRNAs in two phases of study: an initial discovery phase with 14 patients with mesial temporal lobe epilepsy (MTLE), 13 with focal cortical dysplasia (FCD) and 16 controls; and a validation cohort constituted of an independent cohort of 65 patients with MTLE and 83 controls...
2017: PloS One
https://www.readbyqxmd.com/read/28376388/voxel-based-analysis-of-diffusion-tensor-imaging-in-patients-with-mesial-temporal-lobe-epilepsy
#9
Patrícia Sanches, Elaine Keiko Fujisao, Aline M S Braga, Nathalia Raquel Cristaldo, Roberto Dos Reis, Seizo Yamashita, Luiz Eduardo Betting
PURPOSE: Quantitative techniques of diffusion analysis allow for an in-vivo investigation of the physiopathology of epilepsies. The objective of this study was to evaluate the variation of the main diffusion parameters and explore differences between two methodologies of voxel-wise analysis comparing a group of patients with mesial temporal lobe epilepsy (MTLE) with controls. METHODS: 24 patients with a diagnosis of MTLE were selected. All patients and a control group of 36 individuals were submitted to 3T magnetic resonance imaging...
March 25, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28373803/evaluation-of-glutamic-acid-decarboxylase-antibody-levels-in-patients-with-juvenile-myoclonic-epilepsy-and-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis
#10
Ayten Ceyhan Dirican, Sevilay Elibirlik, Ayhan Köksal, Musa Öztürk, Yavuz Altunkaynak, Sevim Baybaş, Ahmet Dirican
INTRODUCTION: Several clinical studies have been conducted to investigate the role of autoantibodies and immunological mechanisms in the etiology of treatment-resistant epilepsy in recent years. Some immunological treatments have been suggested as a result of these studies. In this study, we aimed to investigate the role of autoimmunity in partial and idiopathic generalized epilepsy and determine the relationship between drug resistance and autoimmune antibodies. METHODS: Twenty-eight patients (24 treatment-responsive and 4 treatment-resistant) with juvenile myoclonic epilepsy (JME), 26 patients with mesial temporal lobe epilepsy with hippocampal sclerosis (MTLEHS) resistant to antiepileptic drug treatment, and 26 age-matched healthy control subjects were included in a two-year cross sectional study...
September 2016: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28370739/imaging-of-laser-therapy-in-epilepsy
#11
Lidia M Nagae, Justin M Honce, Eric Nyberg, Steven Ojemann, Aviva Abosch, Cornelia N Drees
BACKGROUND AND PURPOSE: MR-guided laser interstitial thermal therapy (MRgLITT) is an increasingly popular neuroablative method for the surgical treatment of epilepsy patients. This article intends to demonstrate the utility and pitfalls of imaging in the context of patient care with MRgLITT. MATERIAL AND METHODS: A retrospective review of the medical records and imaging database with six illustrative cases selected to demonstrate the use of imaging throughout patient management with MRgLITT in diverse clinical situations and pathologies...
March 29, 2017: Journal of Neuroimaging: Official Journal of the American Society of Neuroimaging
https://www.readbyqxmd.com/read/28360810/brain-infiltration-of-immune-cells-in-caspr2-antibody-associated-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis
#12
Gökçen Ünverengil, Ebru Nur Vanli Yavuz, Erdem Tüzün, Ece Erdağ, Sevil Kabadayi, Bilge Bilgiç, Betül Baykan
INTRODUCTION: Antibodies directed against neuronal surface antigens have recently been identified in patients with focal temporal lobe epilepsy (TLE) of unknown cause and mesial TLE with hippocampal sclerosis (MTLE-HS), thereby emphasizing the role of autoimmunity in TLE. Antibodies to contactin-associated protein-like 2 (CASPR2) are prevalent in MTLE-HS patients. We aimed to find out whether anti-neuronal autoimmunity might be involved in CASPR2 antibody-related MTLE-HS. METHODS: Surgically resected medial temporal lobe specimens of seropositive and seronegative MTLE-HS patients were examined with hematoxylin and eosin and immunohistochemical staining using specific immune cell markers...
December 2016: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28340432/reorganization-of-anterior-and-posterior-hippocampal-networks-associated-with-memory-performance-in-mesial-temporal-lobe-epilepsy
#13
Hong Li, Caihong Ji, Lujia Zhu, Peiyu Huang, Biao Jiang, Xiaojun Xu, Jianzhong Sun, Zhong Chen, Meiping Ding, Minming Zhang, Shuang Wang
OBJECTIVE: To investigate the pattern of functional demarcation of hippocampal network and its relationship with memory performance in mesial temporal lobe epilepsy (mTLE) with unilateral hippocampal sclerosis. METHODS: Resting state fMRI data were acquired from fifteen left mTLE patients, fourteen right mTLE patients and twenty healthy subjects. We explore the hippocampal-cortical alterations and corresponding inter-hemispheric functional connectivity (FC) across anterior and posterior hippocampal networks...
May 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28338446/the-use-of-hippocampal-volumetric-measurements-to-improve-diagnostic-accuracy-in-pediatric-patients-with-mesial-temporal-sclerosis
#14
Gloria J Guzmán Pérez-Carrillo, Christopher Owen, Katherine E Schwetye, Spencer McFarlane, Ananth K Vellimana, Soe Mar, Michelle M Miller-Thomas, Joshua S Shimony, Matthew D Smyth, Tammie L S Benzinger
OBJECTIVE Many patients with medically intractable epilepsy have mesial temporal sclerosis (MTS), which significantly affects their quality of life. The surgical excision of MTS lesions can result in marked improvement or even complete resolution of the epileptic episodes. Reliable radiological diagnosis of MTS is a clinical challenge. The purpose of this study was to evaluate the utility of volumetric mapping of the hippocampi for the identification of MTS in a case-controlled series of pediatric patients who underwent resection for medically refractory epilepsy, using pathology as a gold standard...
March 24, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28332703/predictors-of-meaningful-improvement-in-quality-of-life-after-temporal-lobe-epilepsy-surgery-a-prospective-study
#15
Carla Pauli, Marcelo Liborio Schwarzbold, Alexandre Paim Diaz, Maria Emilia Rodrigues de Oliveira Thais, Charles Kondageski, Marcelo Neves Linhares, Ricardo Guarnieri, Bianca de Lemos Zingano, Juliana Ben, Jean Costa Nunes, Hans Joachim Markowitsch, Peter Wolf, Samuel Wiebe, Katia Lin, Roger Walz
OBJECTIVES: To investigate prospectively the independent predictors of a minimum clinically important change (MCIC) in quality of life (QOL) after anterior temporal lobectomy (ATL) for drug-resistant mesial temporal lobe epilepsy related to hippocampal sclerosis (MTLE-HS) in Brazilian patients. METHODS: Multiple binary logistic regression analysis was performed to identify the clinical, demographic, radiologic, and electrophysiologic variables independently associated with MCIC in the Quality of Life in Epilepsy-31 Inventory (QOLIE-31) overall score 1 year after ATL in 77 consecutive patients with unilateral MTLE-HS...
March 23, 2017: Epilepsia
https://www.readbyqxmd.com/read/28324681/morphometric-mri-features-are-associated-with-surgical-outcome-in-mesial-temporal-lobe-epilepsy-with-hippocampal-sclerosis
#16
Maria Teresa Fernandes Castilho Garcia, Larissa Botelho Gaça, Gabriel Barbosa Sandim, Idaiane Batista Assunção Leme, Henrique Carrete, Ricardo Silva Centeno, João Ricardo Sato, Elza Márcia Targas Yacubian
PURPOSE: Corticoamygdalohippocampectomy (CAH) improves seizure control, quality of life, and decreases mortality for refractory mesial temporal lobe epilepsy with hippocampal sclerosis (MTLE-HS). One-third of patients continue having seizures, and it is pivotal to determine structural abnormalities that might influence the postoperative outcome. Studies indicate that nonhippocampal regions may play a role in the epileptogenic network in MTLE-HS and could generate seizures postoperatively...
March 1, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28322853/the-role-of-histopathologic-subtype-in-the-setting-of-hippocampal-sclerosis-associated-mesial-temporal-lobe-epilepsy
#17
Jordan M Gales, Lara Jehi, Amy Nowacki, Richard A Prayson
Hippocampal sclerosis (HS) and focal cortical dysplasia (FCD) are among the most common neuropathological findings in those undergoing surgery for refractory mesial temporal lobe epilepsy (MTLE). Existing data regarding differences among the most recent International League Against Epilepsy (ILAE) HS subtypes remains limited. This study sought to characterize the roles of HS subtype and coexistent FCD. Epilepsy surgery pathologic specimens in 307 cases of temporal lobe epilepsy with HS were reviewed (mean age ± SD, 37 ± 15 years, 56% women)...
March 17, 2017: Human Pathology
https://www.readbyqxmd.com/read/28306691/predictive-value-of-electrocorticography-in-patients-with-mesial-temporal-lobe-epilepsy-undergoing-selective-amygdalohippocampectomy
#18
Aline Herlopian, Bashir Shihabuddin
PURPOSE: The utility of intraoperative electrocorticography has been reported in predicting seizure outcome in patients with mesial temporal lobe epilepsy due to mesial temporal sclerosis (MTS) undergoing standard temporal lobectomy. Three studies reported the predictive outcome in patients with MTS undergoing selective amygdalohippocampectomy (sAHE). We evaluate the predictive value of the intraoperative electrocorticography in postoperative outcome in patients with mesial temporal lobe epilepsy secondary to MTS undergoing sAHE...
March 16, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28298843/ictal-asystole-a-rare-cardiac-manifestation-of-temporal-lobe-epilepsy-treated-with-epilepsy-surgery
#19
Shreyas Hasmukh Ravat, Amit Ashok Bhatti, Mansi Viraj Shah, Dattatraya P Muzumdar, Sangeeta Hasmukh Ravat
Seizures are associated with fascinatingly varied cardiac and autonomic manifestations, of which ictal tachycardia is common, and asystole and bradycardia are rare. Ictal asystole (IA), an often unsought autonomic phenomenon, occurs most commonly with temporal followed by frontal lobe seizures. Prolonged IA may lead to cerebral anoxic ischemia. As the mysteries of sudden unexplained death in epilepsy are unraveled, it is quite possible that the key to it lays within these seizure-induced cardiac rhythm abnormalities...
January 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28284050/incomplete-circle-of-willis-a-risk-factor-for-mesial-temporal-sclerosis
#20
Gokhan Kuyumcu, Richard W Byrne, Robert J Dawe, Mehmet Kocak
OBJECTIVE: The aim of this study was to investigate whether there may be a correlation between the anatomical variants of Circle of Willis (CoW) and presence/laterality of mesial temporal sclerosis (MTS). METHODS: We retrospectively identified the CoW variants on Wada angiograms in 71 patients with pathologically proven MTS. Angiograms were interpreted by two radiologists independently and blinded to clinical data. We divided the anterior and posterior components of the CoW into functionally complete and functionally incomplete groups...
March 2, 2017: Epilepsy Research
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