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https://www.readbyqxmd.com/read/29163349/kainic-acid-induced-post-status-epilepticus-models-of-temporal-lobe-epilepsy-with-diverging-seizure-phenotype-and-neuropathology
#1
Daniele Bertoglio, Halima Amhaoul, Annemie Van Eetveldt, Ruben Houbrechts, Sebastiaan Van De Vijver, Idrish Ali, Stefanie Dedeurwaerdere
The aim of epilepsy models is to investigate disease ontogenesis and therapeutic interventions in a consistent and prospective manner. The kainic acid-induced status epilepticus (KASE) rat model is a widely used, well-validated model for temporal lobe epilepsy (TLE). As we noted significant variability within the model between labs potentially related to the rat strain used, we aimed to describe two variants of this model with diverging seizure phenotype and neuropathology. In addition, we evaluated two different protocols to induce status epilepticus (SE)...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29161897/status-epilepticus-and-multiple-sclerosis-a-case-presentation-and-literature-review
#2
Murat Mert Atmaca, Candan Gurses
PURPOSE: To search the literature for the frequency, pathogenesis, prognosis, and treatment of seizures and status epilepticus (SE) in patients with multiple sclerosis (MS). METHODS: We report 2 patients with MS who presented with SE and review the literature. RESULTS: Seizures and SE episodes worsened during MS relapses in the first patient. SE episodes and MS relapses significantly decreased after initiation of natalizumab treatment but she still had seizures and was taking 4 antiepileptic drugs (AEDs)...
January 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/29153631/human-abuse-potential-of-brivaracetam-in-healthy-recreational-central-nervous-system-depressant-users
#3
Kerri A Schoedel, Armel Stockis, Edward M Sellers
BACKGROUND: Brivaracetam is a new antiepileptic drug indicated for adjunctive treatment of focal seizures in adults at a dose of 50-200mg/day taken in two equal doses. The objective of this study was to evaluate the abuse potential of brivaracetam compared with alprazolam (positive control), placebo, and levetiracetam. METHODS: This was a randomized, double-blind, triple-dummy, crossover study in healthy male and female recreational central nervous system (CNS) depressant users aged 18-55years, who could distinguish between the subjective effects of alprazolam 2mg and placebo...
November 15, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/29137682/cefepime-induced-neurotoxicity-a-systematic-review
#4
Lauren E Payne, David J Gagnon, Richard R Riker, David B Seder, Elizabeth K Glisic, Jane G Morris, Gilles L Fraser
BACKGROUND: Cefepime is a widely used antibiotic with neurotoxicity attributed to its ability to cross the blood-brain barrier and exhibit concentration-dependent ϒ-aminobutyric acid (GABA) antagonism. Neurotoxic symptoms include depressed consciousness, encephalopathy, aphasia, myoclonus, seizures, and coma. Data suggest that up to 15% of ICU patients treated with cefepime may experience these adverse effects. Risk factors include renal dysfunction, excessive dosing, preexisting brain injury, and elevated serum cefepime concentrations...
November 14, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29121573/rufinamide-crystal-structure-elucidation-and-solid-state-characterization
#5
Nita Salunke, Rajesh Thipparaboina, Rahul B Chavan, Anurag Lodagekar, Sudhir Mittapalli, Ashwini Nangia, Nalini R Shastri
Rufinamide (R) is a triazole derivative approved for the management of partial seizures and seizures associated with Lennox-Gastaut Syndrome, in November 2007. Crystal structure, solid state characterization, drug-excipient compatibility and solubility play a pivotal role in formulation development. This work deals with the crystal structure elucidation of R by single crystal X-ray diffraction and solid state characterization by thermal, spectroscopic and crystallographic techniques. Drug- excipient compatibility was assessed by differential scanning calorimetry (DSC)...
November 6, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29111303/in-vitro-characteristics-of-endothelial-cells-prepared-from-human-cerebral-arteriovenous-malformation-lesions-using-a-novel-method
#6
Q Hao, X L Chen, L Ma, X Ye, H Wang, T T Wang, Y Hu, Y L Zhao
BACKGROUND AND PURPOSE: The cerebral arteriovenous malformation (cAVM) is a usual and continually unaware reason of heamorrhage and seizure. It contains of feeder arteries, drain veins and abnormal vessel nets. However, pathologic mechanisms of the development of cAVM are unknown. The purpose of this study was to explore a novel protocol to isolate, culture and passage endothelial cells (ECs) from human cAVM lesions. METHODS: We developed a protocol for isolating and growing ECs from eight patients with cAVM...
October 28, 2017: Microvascular Research
https://www.readbyqxmd.com/read/29107831/behavioral-changes-in-models-of-chemoconvulsant-induced-epilepsy-a-review
#7
REVIEW
B Minjarez, H O Camarena, J Haramati, Y Rodríguez-Yañez, S Mena-Munguía, J Buriticá, O García-Leal
Epilepsy is one of the most common neurological disorders in the general population and affects over 50 million people worldwide. Epilepsy is characterized by the presence of spontaneous recurrent seizures as a result of sudden and abnormal electrical activity in specific areas of the cerebral cortex. However, this condition encompasses much more than simply the presence of seizures. Cognitive problems and behavioral impairments are also frequent actors, as well as mood disorders. These must be precisely described in order to develop more successful pharmacological, or even behavioral, treatments...
October 28, 2017: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/29089238/-clinical-and-pathological-definition-of-temporal-medium-epilepsy-subtypes-with-hypocampic-sclerosis
#8
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/29078005/psychological-treatments-for-people-with-epilepsy
#9
REVIEW
Rosa Michaelis, Venus Tang, Janelle L Wagner, Avani C Modi, William Curt LaFrance, Laura H Goldstein, Tobias Lundgren, Markus Reuber
BACKGROUND: Given the significant impact epilepsy can have on the health-related quality of life (HRQoL) of individuals with epilepsy and their families, there is great clinical interest in evidence-based psychological treatments, aimed at enhancing psychological well-being in people with epilepsy. A review of the current evidence was needed to assess the effects of psychological treatments for people with epilepsy on HRQoL outcomes, in order to inform future therapeutic recommendations and research designs...
October 27, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29077650/safety-and-efficacy-of-theta-burst-stimulation-in-the-treatment-of-psychiatric-disorders-a-review-of-the-literature
#10
REVIEW
Fady Rachid
Theta-burst stimulation (TBS) is a form of repetitive transcranial magnetic stimulation and is thought to induce more rapid and longer-lasting effects on synaptic plasticity than conventional repetitive transcranial magnetic stimulation protocols. TBS is being used as an investigational and more recently as a therapeutic tool. The purpose of this review is to describe and discuss the studies that have evaluated the safety and efficacy of this technique in the treatment of various psychiatric disorders such as depression, schizophrenia, obsessive-compulsive disorder, Tourette's disorder, nicotine and cocaine addiction, and pathological gambling...
November 2017: Journal of Nervous and Mental Disease
https://www.readbyqxmd.com/read/29076419/intraoperative-seizures-anesthetic-drugs-and-antiepileptic-drugs
#11
Alberto Uribe, Alix Zuleta-Alarcon, Mahmoud Kassem, Gurneet S Sandhu, Sergio D Bergese
BACKGROUND: Epilepsy is a common condition with up to 1% prevalence in the general population. In the perioperative course of neurologic surgery patients, the use of prophylactic and therapeutic antiepileptic drugs is a common practice. Nonetheless, there is limited evidence supporting the use of prophylactic antiepileptics to prevent perioperative seizures and there are no guidelines for which anesthetic technique is preferred. OBJECTIVE: To discuss the seizurogenic potential of anesthetic drugs and to discuss intraoperative seizures in neurosurgical patients...
October 24, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29060312/predicting-the-stimulation-effectiveness-using-pre-stimulation-neural-states-via-optogenetic-activation-of-the-medial-septum-glutamatergic-neurons-modulating-the-hippocampal-neural-activity
#12
Sang-Eon Park, Nealen G Laxpati, Mark J Connolly, Babak Mahmoudi, Robert E Gross
In this study, we explored the role of pre-stimulation neural states on the effectiveness of optogenetic stimulation. Optogenetic stimulation was applied to the medial septum glutamatergic neurons to modulate the hippocampal neural activity in a rat tetanus toxin seizure model. The hippocampal local field potential was recorded using a multi electrode array in an awake and behaving rat. Optical stimulation with a 465nm light source was applied at 35Hz in a 20 seconds off / 20 seconds on pattern with simultaneous recording from the hippocampus...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29054017/hyperventilation-and-electroconvulsive-therapy-a-literature-review
#13
REVIEW
Jorge Gómez-Arnau, Aida de Arriba-Arnau, Javier Correas-Lauffer, Mikel Urretavizcaya
BACKGROUND: Hyperventilation has been proposed as an augmentation strategy in electroconvulsive therapy (ECT) in accordance with its proconvulsant effect. OBJECTIVE: This study reviews the existing literature on the application of hyperventilation in ECT, its efficacy, and tolerance. METHODS: A systematic search was performed in PubMed and EMBASE databases. Search terms ('electroconvulsive therapy' and 'hyperventilation', 'ventilation', 'hyperoxygenation', 'hyperoxia', 'hypocapnia') were used to retrieve works from 1966 to June 2016...
September 23, 2017: General Hospital Psychiatry
https://www.readbyqxmd.com/read/29035720/an-internationally-standardized-species-identification-test-for-use-on-suspected-seized-rhinoceros-horn-in-the-illegal-wildlife-trade
#14
Kyle M Ewart, Greta J Frankham, Ross McEwing, Lucy M I Webster, Sherryn A Ciavaglia, Adrian M T Linacre, Dang Tat The, Kanitia Ovouthan, Rebecca N Johnson
Rhinoceros (rhino) numbers have dwindled substantially over the past century. As a result, three of the five species are now considered to be critically endangered, one species is vulnerable and one species is near-threatened. Poaching has increased dramatically over the past decade due to a growing demand for rhino horn products, primarily in Asia. Improved wildlife forensic techniques, such as validated tests for species identification of seized horns, are critical to aid current enforcement and prosecution efforts and provide a deterrent to future rhino horn trafficking...
October 7, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29031866/connectivity-changes-after-laser-ablation-resting-state-fmri
#15
Varina L Boerwinkle, Aditya Vedantam, Sandi Lam, Angus A Wilfong, Daniel J Curry
Resting-state functional magnetic resonance imaging (rsfMRI) is emerging as a useful tool in the multimodal assessment of patients with epilepsy. In pediatric patients who cannot perform task-based fMRI, rsfMRI may present an adjunct and alternative. Although changes in brain activation during task-based fMRI have been described after surgery for epilepsy, there is limited data on the role of postoperative rsfMRI. In this short review, we discuss the role of postoperative rsfMRI after laser ablation of seizure foci...
September 28, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/29030748/neuroimaging-of-cavernous-malformations
#16
REVIEW
Maxim Mokin, Siviero Agazzi, Lowell Dawson, Christopher T Primiani
PURPOSE OF REVIEW: Cerebral cavernous malformations (CCMs) are common vascular abnormalities often discovered on imaging as an incidental finding. The most common clinical presentations of CCMs include seizure, headache, focal neurological deficits, and intracranial hemorrhage. This article discusses the most recent guidelines including imaging diagnostic criteria and radiographic standards of CCMs and reviews the utility of currently available imaging techniques. RECENT FINDINGS: Gradient echo T2*-weighted imaging and susceptibility-weighted imaging are the recommended imaging protocols for evaluation of suspected CCMs...
October 13, 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/29021835/progressive-changes-in-hippocampal-cytoarchitecture-in-a-neurodevelopmental-rat-model-of-epilepsy-implications-for-understanding-presymptomatic-epileptogenesis-predictive-diagnosis-and-targeted-treatments
#17
Paul B Bernard, Leslie A Ramsay, Debra S MacDonald, R Andrew Tasker
Epilepsies affect about 4% of the population and are frequently characterized by a prolonged "silent" period before the onset of spontaneous seizures. Most current animal models of epilepsy either involve acute seizure induction or kindling protocols that induce repetitive seizures. We have developed a rat model of epilepsy that is characterized by a slowly progressing series of behavioral abnormalities prior to the onset of behavioral seizures. In the current study, we further describe an accompanying progression of cytoarchitectural changes in the hippocampal formation...
September 2017: EPMA Journal
https://www.readbyqxmd.com/read/28984246/the-role-of-eeg-in-the-diagnosis-and-classification-of-the-epilepsy-syndromes-a-tool-for-clinical-practice-by-the-ilae-neurophysiology-task-force-part-1
#18
Michalis Koutroumanidis, Alexis Arzimanoglou, Roberto Caraballo, Sushma Goyal, Anna Kaminska, Pramote Laoprasert, Hirokazu Oguni, Guido Rubboli, William Tatum, Pierre Thomas, Eugen Trinka, Luca Vignatelli, Solomon L Moshé
The concept of epilepsy syndromes, introduced in 1989, was defined as "clusters of signs and symptoms customarily occurring together". Definition of epilepsy syndromes based on electro-clinical features facilitated clinical practice and, whenever possible, clinical research in homogeneous groups of patients with epilepsies. Progress in the fields of neuroimaging and genetics made it rapidly clear that, although crucial, the electro-clinical description of epilepsy syndromes was not sufficient to allow much needed development of targeted therapies and a better understanding of the underlying pathophysiological mechanisms of seizures...
October 6, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28982291/intranasal-melanoma-treated-with-radiation-therapy-in-three-dogs
#19
Owen Davies, Sarah Spencer, Slavomira Necova, Emma Holmes, Angela Taylor, Laura Blackwood, Ana Lara-Garcia
Three dogs were investigated for chronic unilateral nasal discharge. In all cases CT imaging showed an intranasal mass causing turbinate lysis and no evidence of metastasis. Cytology in cases 1 (a 14-year-old neutered male crossbreed dog) and 2 (a five-year-old neutered male German Shepherd dog) demonstrated a pleomorphic cell population with variable intracellular pigment suspicious of melanocytic neoplasia. Histopathology with immunohistochemistry (Melan-A and vimentin, plus PNL-2 in one case) confirmed the diagnosis of melanoma in all dogs...
October 6, 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28973889/simultaneous-two-photon-imaging-of-intracellular-chloride-concentration-and-ph-in-mouse-pyramidal-neurons-in-vivo
#20
Sebastian Sulis Sato, Pietro Artoni, Silvia Landi, Olga Cozzolino, Riccardo Parra, Enrico Pracucci, Francesco Trovato, Joanna Szczurkowska, Stefano Luin, Daniele Arosio, Fabio Beltram, Laura Cancedda, Kai Kaila, Gian Michele Ratto
Intracellular chloride ([Cl(-)]i) and pH (pHi) are fundamental regulators of neuronal excitability. They exert wide-ranging effects on synaptic signaling and plasticity and on development and disorders of the brain. The ideal technique to elucidate the underlying ionic mechanisms is quantitative and combined two-photon imaging of [Cl(-)]i and pHi, but this has never been performed at the cellular level in vivo. Here, by using a genetically encoded fluorescent sensor that includes a spectroscopic reference (an element insensitive to Cl(-) and pH), we show that ratiometric imaging is strongly affected by the optical properties of the brain...
October 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
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