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https://www.readbyqxmd.com/read/28544746/clinical-outcomes-following-proton-therapy-for-children-with-central-nervous-system-tumors-referred-overseas
#1
Daniel J Indelicato, Julie A Bradley, Eric S Sandler, Philipp R Aldana, Amy Sapp, Jennifer E Gains, Adrian Crellin, Ronny L Rotondo
BACKGROUND: International, multidisciplinary care of children with central nervous system (CNS) tumors presents unique challenges. The aim of this study is to report patient outcomes of U.K. children referred for proton therapy to a North American facility. METHODS: From 2008 to 2016, 166 U.K. children with approved CNS tumors were treated with proton therapy at a single academic medical center in the United States. Median age was 7 years (range, 1-19). Median follow-up was 2...
May 24, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28542985/cholinesterase-reactivators-and-bioscavengers-for-pre-and-post-exposure-treatments-of-organophosphorus-poisoning
#2
REVIEW
Patrick Masson, Florian Nachon
Organophosphorus agents (OPs) irreversibly inhibit acetylcholinesterase (AChE) causing a major cholinergic syndrome. The medical counter-measures of OP poisoning have not evolved for the last 30 years with carbamates for pretreatment, pyridinium oximes-based AChE reactivators, antimuscarinic drugs and neuroprotective benzodiazepines for post-exposure treatment. These drugs ensure protection of peripheral nervous system and mitigate acute effects of OP lethal doses. However, they have significant limitations...
May 21, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28532713/electroencephalography-after-a-single-unprovoked-seizure
#3
REVIEW
Derek B Debicki
Electroencephalography (EEG) is an essential diagnostic tool in the evaluation of seizure disorders. In particular, EEG is used as an additional investigation for a single unprovoked seizure. Epileptiform abnormalities are related to seizure disorders and have been shown to predict recurrent unprovoked seizures (i.e., a clinical definition of epilepsy). Thus, the identification of epileptiform abnormalities after a single unprovoked seizure can inform treatment options. The current review addresses the relationship between EEG abnormalities and seizure recurrence...
April 25, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28532711/psychiatric-comorbidities-in-new-onset-epilepsy-should-they-be-always-investigated
#4
REVIEW
Andres M Kanner
The new definition of epilepsy establishes that epilepsy is not only a disorder presenting with epileptic seizures but it can be often associated with cognitive and psychiatric comorbidities. In fact, the prevalence of psychiatric comorbidities is relatively high in patients with epilepsy (PWE), as one in three patients will have experienced a psychiatric disorder in the course of their life, with mood and anxiety disorders being the most frequent. Psychiatric comorbidities often precede the onset of the seizure disorder, and affect the life of these patients and the course of the seizure disorder at several levels, including a worse tolerance of pharmacotherapy with antiepileptic drugs (AEDs), in particular the development of iatrogenic psychiatric symptoms from pharmacologic and surgical treatments, an increased mortality risk, a worse quality of life and higher economic burdens of the patient, family and society as a hole...
April 14, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28530152/new-onset-fixation-off-sensitivity-or-scotosensitivity-in-an-adult-male-after-bilateral-embolic-strokes-of-the-parietal-and-occipital-regions
#5
Francis G Tirol
A 50-year old male suffered new-onset clinical and subclinical seizures provoked by acute bilateral embolic strokes in the parietal and occipital regions as a complication of aortic valve replacement surgery. After successful treatment of these refractory symptomatic seizures with intravenous propofol and antiseizure medications, video-EEG recordings revealed acute and transient fixation-off sensitivity or scotosensitivity that resolved within 10 weeks.
May 1, 2017: Clinical EEG and Neuroscience: Official Journal of the EEG and Clinical Neuroscience Society (ENCS)
https://www.readbyqxmd.com/read/28515556/subacute-noninfective-inflammatory-encephalopathy-our-experience-and-diagnostic-problems
#6
Sadanandavalli Retnaswami Chandra, Lakshminarayanapuram Gopal Viswanathan, Dodmalur Malikarjuna Sindhu, Anupama Ramakanth Pai
INTRODUCTION: Immune dysregulation associated encephalopathies present with significant psychiatric manifestations and only a few soft neurological and general systemic features. They are generally resistant to treatment with psychiatric medications. Generalized orthostatic myoclonus and faciobrachial dystonic seizures are mistaken as Creutzfeldt-Jakob disease and subacute sclerosing panencephalitis. PATIENTS AND METHODS: Forty-two patients seen during 2010-2015 and diagnosed as noninfective encephalopathy were analyzed...
March 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28512046/risk-factors-for-preoperative-seizures-and-loss-of-seizure-control-in-patients-undergoing-surgery-for-metastatic-brain-tumors
#7
Adela Wu, Jon D Weingart, Gary L Gallia, Michael Lim, Henry Brem, Chetan Bettegowda, Kaisorn L Chaichana
OBJECTIVE: Metastatic brain tumors are the most common brain tumors in adults. Patients with metastatic brain tumors have poor prognoses with median survival of 6-12 months. Seizures are a major presenting symptom and cause of morbidity and mortality. Risk factors for the onset of preoperative seizures and postoperative seizure control are examined. METHODS: Adult patients who underwent resection of one or more brain metastases at a single institution between 1998 and 2011 were retrospectively reviewed...
May 13, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28510905/zoomed-mri-guided-by-combined-eeg-meg-source-analysis-a-multimodal-approach-for-optimizing-presurgical-epilepsy-work-up-and-its-application-in-a-multi-focal-epilepsy-patient-case-study
#8
Ü Aydin, S Rampp, A Wollbrink, H Kugel, J -H Cho, T R Knösche, C Grova, J Wellmer, C H Wolters
In recent years, the use of source analysis based on electroencephalography (EEG) and magnetoencephalography (MEG) has gained considerable attention in presurgical epilepsy diagnosis. However, in many cases the source analysis alone is not used to tailor surgery unless the findings are confirmed by lesions, such as, e.g., cortical malformations in MRI. For many patients, the histology of tissue resected from MRI negative epilepsy shows small lesions, which indicates the need for more sensitive MR sequences...
May 16, 2017: Brain Topography
https://www.readbyqxmd.com/read/28506504/anti-n-methyl-d-aspartate-receptor-encephalitis-appearing-as-a-new-onset-psychosis-disease-course-in-children-and-adolescents-within-the-california-encephalitis-project
#9
Mary Gable, Carol Glaser
BACKGROUND: Given that psychiatric symptoms are common, not only during the course of the illness but also on presentation, in children and adolescents with anti-N-methyl-d-aspartate receptor encephalitis, it is important that practitioners in the field of child and adolescent psychiatry possess an adequate understanding of the clinical features and potential treatment of this disease. We describe the clinical characteristics of 24 patients who presented to the California Encephalitis Project...
February 4, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28506485/surgery-for-dysembryoplastic-neuroepithelial-tumors-and-gangliogliomas-in-eloquent-areas-functional-results-and-seizure-control
#10
B Devaux, F Chassoux, E Landré, B Turak, A Laurent, M Zanello, C Mellerio, P Varlet
INTRODUCTION: Dysembryoplastic neuroepithelial tumors and gangliogliomas are developmental glioneuronal tumors usually revealed by partial epilepsy. High epileptogenicity, childhood epilepsy onset, drug-resistance, temporal location, and seizure freedom after complete resection are common characteristics of both tumors. We report the specificity of surgical management, functional results and seizure outcome in cases of a tumor location in eloquent areas. METHODS: Among 150 patients (88 males, 3-55 years) operated on for refractory epilepsy due to a glioneuronal tumor (1990-2015), 30 (20%, dysembryoplastic neuroepithelial tumors=21; gangliogliomas=9) had a tumor located in an eloquent cortex (sensory-motor, insular or language areas)...
May 12, 2017: Neuro-Chirurgie
https://www.readbyqxmd.com/read/28505725/critical-dynamics-of-hopf-bifurcations-in-the-corticothalamic-system-transitions-from-normal-arousal-states-to-epileptic-seizures
#11
Dong-Ping Yang, P A Robinson
A physiologically based corticothalamic model of large-scale brain activity is used to analyze critical dynamics of transitions from normal arousal states to epileptic seizures, which correspond to Hopf bifurcations. This relates an abstract normal form quantitatively to underlying physiology that includes neural dynamics, axonal propagation, and time delays. Thus, a bridge is constructed that enables normal forms to be used to interpret quantitative data. The normal form of the Hopf bifurcations with delays is derived using Hale's theory, the center manifold theorem, and normal form analysis, and it is found to be explicitly expressed in terms of transfer functions and the sensitivity matrix of a reduced open-loop system...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28504953/adaptive-seizure-onset-detection-framework-using-a-hybrid-pca-csp-approach
#12
Sina Khanmohammadi, Chun-An Chou
Epilepsy is one of the most common neurological disorders in the world. Prompt detection of seizure onset from electroencephalogram (EEG) signals can improve the treatment of epileptic patients. This paper presents a new adaptive patientspecific seizure onset detection framework that dynamically selects a feature from enhanced EEG signals to discriminate seizures from normal brain activity. The proposed framework employs principle component analysis (PCA) and common spatial patterns (CSP) to enhance the EEG signals and uses the extracted discriminative feature as an input for adaptive distance-based change point detector to identify the seizure onsets...
May 12, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28500678/bgg492-as-an-adjunctive-treatment-in-patients-with-partial-onset-seizures-a-12-week-randomized-double-blind-placebo-controlled-phase-ii-dose-titration-study-with-an-open-label-extension
#13
Christian E Elger, Seung Bong Hong, Christian Brandt, Linda Mancione, Jackie Han, Christine Strohmaier
OBJECTIVES: To evaluate dose-response relationship of BGG492 as add-on therapy to 1-3 antiepileptic drugs in patients with partial-onset seizures and to investigate safety and tolerability of BGG492. METHODS: This was a 12-week, randomized, double-blind, placebo-controlled, phase II dose-titration study (core study) with a 30-week, flexible-dose, open-label extension. In the core study, patients were randomized (1:2) to placebo or BGG492 100 mg t.i.d. in cohort 1, and in cohort 2 patients were randomized (1:4) to placebo or BGG492 150 mg t...
May 13, 2017: Epilepsia
https://www.readbyqxmd.com/read/28488989/spice-y-kidney-failure-a-case-report-and-systematic-review-of-acute-kidney-injury-attributable-to-the-use-of-synthetic-cannabis
#14
REVIEW
Ceyda Zarifi, Shuchi Vyas
INTRODUCTION: Spice is a synthetic cannabinoid that is readily available for purchase in smoke shops at relatively low cost. Spice is not detectable upon routine drug screening, making it an increasingly popular new street drug. CASE REPORT: A 21-year-old man presented with new-onset seizures. During the next 2 days, he developed uncontrollable hypertension, agitation, respiratory failure requiring intubation, pulmonary hypertension, and acute kidney injury (AKI) with a maximum blood urea nitrogen/creatinine level of 54/7...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28476758/poststroke-epilepsy-in-long-term-survivors-of-primary-intracerebral-hemorrhage
#15
Anna-Maija Lahti, Pertti Saloheimo, Juha Huhtakangas, Henrik Salminen, Seppo Juvela, Michaela K Bode, Matti Hillbom, Sami Tetri
OBJECTIVE: To identify the incidence and predisposing factors for development of poststroke epilepsy (PSE) after primary intracerebral hemorrhage (PICH) during a long-term follow-up. METHODS: We performed a retrospective study of patients who had had their first-ever PICH between January 1993 and January 2008 in Northern Ostrobothnia, Finland, and who survived for at least 3 months. These patients were followed up for PSE. The associations between PSE occurrence and sex, age, Glasgow Coma Scale (GCS) score on admission, hematoma location and volume, early seizures, and other possible risk factors for PSE were assessed using the Cox proportional hazards regression model...
May 5, 2017: Neurology
https://www.readbyqxmd.com/read/28436627/-temporal-lobe-epilepsy-and-adult-hippocampal-neurogenesis
#16
Liying Chen, Yi Wang, Zhong Chen
Temporal lobe epilepsy (TLE) is a common and severe neurological disorder which is often intractable. It can not only damage the normal structure and function of hippocampus, but also affect the neurogenesis in dentate gyrus (DG). It is well documented from researches on the animal models of TLE that after a latent period of several days, prolonged seizure activity leads to a dramatic increase in mitotic activity in the hippocampal DG. However, cell proliferation returns to baseline levels within 3-4 weeks after status epilepticus (SE)...
January 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/28431589/t2-relaxometry-helps-prognosticate-seizure-outcome-in-patients-with-solitary-cerebral-cysticercosis
#17
Aaron de Souza, Atchayaram Nalini, Jitender Saini, Kandavel Thennarasu
OBJECTIVE: Correlate serial T2 relaxometry (T2R) values with long term seizure outcome in patients with solitary cerebral cysticercosis (SCC) in order to establish its usefulness as a prognostic marker in these patients. METHODS: Patients with new-onset seizures due to SCC were imaged serially using a pre-determined MRI protocol at enrolment and after 3, 6, 12 and 24months. T2 relaxometry was performed using a dual echo sequence with maps generated manually from the measured image intensities at the level of the lesion...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28428738/improved-localization-of-seizure-onset-zones-using-spatiotemporal-constraints-and-time-varying-source-connectivity
#18
Juan D Martinez-Vargas, Gregor Strobbe, Kristl Vonck, Pieter van Mierlo, German Castellanos-Dominguez
Presurgical evaluation of brain neural activity is commonly carried out in refractory epilepsy patients to delineate as accurately as possible the seizure onset zone (SOZ) before epilepsy surgery. In practice, any subjective interpretation of electroencephalographic (EEG) recordings is hindered mainly because of the highly stochastic behavior of the epileptic activity. We propose a new method for dynamic source connectivity analysis that aims to accurately localize the seizure onset zones by explicitly including temporal, spectral, and spatial information of the brain neural activity extracted from EEG recordings...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28427143/activity-induced-spontaneous-spikes-in-gabaergic-neurons-suppress-seizure-discharges-an-implication-of-computational-modeling
#19
Wei Lu, Jing Feng, Bo Wen, Kewei Wang, Jin-Hui Wang
BACKGROUND: Epilepsy, a prevalent neurological disorder, appears self-termination. The endogenous mechanism for seizure self-termination remains to be addressed in order to develop new strategies for epilepsy treatment. We aim to examine the role of activity-induced spontaneous spikes at GABAergic neurons as an endogenous mechanism in the seizure self-termination. METHODS AND RESULTS: Neuronal spikes were induced by depolarization pulses at cortical GABAergic neurons from temporal lobe epilepsy patients and mice, in which some of these neurons fired activity-induced spontaneous spikes...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28425015/the-new-classification-of-seizures-by-the-international-league-against-epilepsy-2017
#20
REVIEW
Robert S Fisher
PURPOSE OF REVIEW: This review presents the newly developed International League Against Epilepsy (ILAE) 2017 classification of seizure types. RECENT FINDINGS: The fundamental distinction is between seizures that begin focally in one hemisphere of the brain, generalized onset seizures that apparently originate in both hemispheres, and seizures of unknown onset. Focal seizures optionally can be subclassified according to whether awareness (a surrogate marker for consciousness) is intact or impaired...
June 2017: Current Neurology and Neuroscience Reports
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