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epilepsy; seizures

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https://www.readbyqxmd.com/read/28637175/multiple-subpial-transections-for-medically-refractory-epilepsy-a-disaggregated-review-of-patient-level-data
#1
John D Rolston, Hansen Deng, Doris D Wang, Dario J Englot, Edward F Chang
BACKGROUND: Multiple subpial transections (MST) are a treatment for seizure foci in nonresectable eloquent areas. OBJECTIVE: To systematically review patient-level data regarding MST. METHODS: Studies describing patient-level data for MST procedures were extracted from the Medline and PubMed databases, yielding a synthetic cohort of 212 patients from 34 studies. Data regarding seizure outcome, patient demographics, seizure type, surgery type, and complications were extracted and analyzed...
June 20, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28636978/psychiatric-comorbidity-with-hypothalamic-hamartoma-systematic-review-for-predictive-clinical-features
#2
REVIEW
Zachary Killeen, Raymond Bunch, John F Kerrigan
OBJECTIVE: We conducted a systematic review of the English-language literature to identify clinical features associated with a higher risk of psychiatric symptoms (aggression and rage behaviors) in patients with hypothalamic hamartoma (HH) and epilepsy. METHODS: Two publicly-accessible databases (PubMed and Cochrane Library) were searched for Hypothalamic Hamartoma AND Epilepsy. We identified peer-reviewed original research publications (case reports or clinical series; N=19) in which clinical data was provided on an individual basis...
June 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28633970/unified-neural-field-theory-of-brain-dynamics-underlying-oscillations-in-parkinson-s-disease-and-generalized-epilepsies
#3
E J Müller, S J van Albada, J W Kim, P A Robinson
The mechanisms underlying pathologically synchronized neural oscillations in Parkinson's disease (PD) and generalized epilepsies are explored in parallel via a physiologically-based neural field model of the corticothalamic-basal ganglia (CTBG) system. The basal ganglia (BG) are approximated as a single effective population and their roles in the modulation of oscillatory dynamics of the corticothalamic (CT) system and vice versa are analyzed. In addition to normal EEG rhythms, enhanced activity around 4 Hz and 20 Hz exists in the model, consistent with the characteristic frequencies observed in PD...
June 17, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28633092/epilepsy-in-neurofibromatosis-type-1
#4
Anthony Pecoraro, Eric Arehart, William Gallentine, Rodney Radtke, Edward Smith, Carolyn Pizoli, Sujay Kansagra, Elie Abdelnour, Roger McLendon, Mohamad A Mikati
OBJECTIVES: To describe the characteristics of epilepsy in patients with Neurofibromatosis type 1 (NF1). METHODS: Analysis of a cohort of consecutive NF1 patients seen in our NF1 clinic during a three-year period. RESULTS: Of the 184 NF1 patients seen during that period, 26 had epilepsy and three had febrile seizures. Of the 26, 17 (65%) had localization-related epilepsy, seven of whom (41%) were drug resistant. Six (23%) had apparently primary generalized epilepsy (0/6 drug resistant), two (8%) Lennox-Gastaut syndrome, and one (4%) West syndrome (all three were drug-resistant)...
June 17, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28633043/de-novo-12q22-q23-3-duplication-associated-with-temporal-lobe-epilepsy
#5
Maria Stella Vari, Monica Traverso, Tommaso Bellini, Francesca Madia, Francesca Pinto, Carlo Minetti, Pasquale Striano, Federico Zara
PURPOSE: Temporal lobe epilepsy (TLE) is the most common form of focal epilepsy and may be associated with acquired central nervous system lesions or could be genetic. Various susceptibility genes and environmental factors are believed to be involved in the aetiology of TLE, which is considered to be a heterogeneous, polygenic, and complex disorder. Rare point mutations in LGI1, DEPDC5, and RELN as well as some copy number variations (CNVs) have been reported in families with TLE patients...
June 15, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28632737/supervised-filters-for-eeg-signal-in-naturally-occurring-epilepsy-forecasting
#6
Francisco Javier Muñoz-Almaraz, Francisco Zamora-Martínez, Paloma Botella-Rocamora, Juan Pardo
Nearly 1% of the global population has Epilepsy. Forecasting epileptic seizures with an acceptable confidence level, could improve the disease treatment and thus the lifestyle of the people who suffer it. To do that the electroencephalogram (EEG) signal is usually studied through spectral power band filtering, but this paper proposes an alternative novel method of preprocessing the EEG signal based on supervised filters. Such filters have been employed in a machine learning algorithm, such as the K-Nearest Neighbor (KNN), to improve the prediction of seizures...
2017: PloS One
https://www.readbyqxmd.com/read/28632525/clozapine-safety-and-efficacy-for-interictal-psychotic-disorder-in-pharmacoresistant-epilepsy
#7
Vincent Jetté Pomerleau, François Dubeau, Simon Ducharme
Since the middle of the 19th century, both neurologists and psychiatrists have linked psychosis and epilepsy. Clozapine, the most effective antipsychotic drug, alters electroencephalographic activity and carries a significant risk of causing seizures. Unfortunately, this risk limits the drug's potential use in treating pharmacoresistant psychosis in patients with epilepsy. We present a unique case in which we used clozapine successfully as a last resort treatment for chronic interictal psychosis in a 43-year-old woman with severe pharmacoresistant epilepsy and recurrent status epilepticus...
June 2017: Cognitive and Behavioral Neurology: Official Journal of the Society for Behavioral and Cognitive Neurology
https://www.readbyqxmd.com/read/28632329/postictal-hypoperfusion-hypoxia-provides-the-foundation-for-a-unified-theory-of-seizure-induced-brain-abnormalities-and-behavioral-dysfunction
#8
REVIEW
Jordan S Farrell, Roberto Colangeli, Marshal D Wolff, Alexandra K Wall, Thomas J Phillips, Antis George, Paolo Federico, G Campbell Teskey
A recent article by Farrell et al. characterizes the phenomenon, mechanisms, and treatment of a local and severe hypoperfusion/hypoxia event that occurs in brain regions following a focal seizure. Given the well-established role of cerebral ischemia/hypoxia in brain damage and behavioral dysfunction in other clinical settings (e.g., stroke, cerebral vasospasm), we put forward a new theory: postictal hypoperfusion/hypoxia is responsible for the negative consequences associated with seizures. Fortunately, inhibition of two separate molecular targets, cyclooxygenase-2 (COX-2) and l-type calcium channels, can prevent the expression of postictal hypoperfusion/hypoxia...
June 20, 2017: Epilepsia
https://www.readbyqxmd.com/read/28632327/photosensitivity-is-an-early-marker-of-neuronal-ceroid-lipofuscinosis-type-2-disease
#9
Nicola Specchio, Marcello Bellusci, Nicola Pietrafusa, Marina Trivisano, Luca de Palma, Federico Vigevano
OBJECTIVE: This study aimed to identify early clinical, magnetic resonance imaging (MRI), and electroencephalographic (EEG) characteristics of neuronal ceroid lipofuscinosis type 2 (CLN2) disease to enable early diagnosis, thus providing the key to early treatment, and optimized care and outcomes. METHODS: Retrospective clinical chart review of a series of patients diagnosed with CLN2 disease from 2005 to 2015 at a single center in Italy. Clinical, MRI, and EEG findings were reviewed...
June 20, 2017: Epilepsia
https://www.readbyqxmd.com/read/28631057/diabetes-mellitus-a-risk-factor-for-seizures-in-the-elderly-a-population-based-study
#10
Marta Baviera, Maria Carla Roncaglioni, Mauro Tettamanti, Tommaso Vannini, Ida Fortino, Angela Bortolotti, Luca Merlino, Ettore Beghi
AIMS: To evaluate the association between diabetes mellitus (DM) and risk of seizures in a well-defined elderly population. METHODS: The administrative databases of the Lombardy region (a 10 million population area in Northern Italy) were used to identify persons aged 65 years or older with DM (defined by prescription of antidiabetic drugs and/or through ICD-9 CM code and/or exemption code for diabetes) during the year 2002. Seizure-free DM subjects were followed until 2012 in search of individuals with incident seizures (identified through ICD-9 CM codes for epilepsy/seizures or ATC codes for antiepileptic drugs associated with the prescription of an electroencephalogram)...
June 19, 2017: Acta Diabetologica
https://www.readbyqxmd.com/read/28630376/functional-connectivity-disturbances-of-the-ascending-reticular-activating-system-in-temporal-lobe-epilepsy
#11
Dario J Englot, Pierre-Francois D'Haese, Peter E Konrad, Monica L Jacobs, John C Gore, Bassel W Abou-Khalil, Victoria L Morgan
OBJECTIVE: Seizures in temporal lobe epilepsy (TLE) disturb brain networks and lead to connectivity disturbances. We previously hypothesised that recurrent seizures in TLE may lead to abnormal connections involving subcortical activating structures including the ascending reticular activating system (ARAS), contributing to neocortical dysfunction and neurocognitive impairments. However, no studies of ARAS connectivity have been previously reported in patients with epilepsy. METHODS: We used resting-state functional MRI recordings in 27 patients with TLE (67% right sided) and 27 matched controls to examine functional connectivity (partial correlation) between eight brainstem ARAS structures and 105 cortical/subcortical regions...
June 19, 2017: Journal of Neurology, Neurosurgery, and Psychiatry
https://www.readbyqxmd.com/read/28630111/investigation-of-seizure-susceptibility-in-a-drosophila-model-of-human-epilepsy-with-optogenetic-stimulation
#12
Arunesh Saras, Veronica V Wu, Harlan J Brawer, Mark A Tanouye
We examined seizure-susceptibility in a Drosophila model of human epilepsy using optogenetic stimulation of ReaChR opsin. Photostimulation of the seizure-sensitive mutant para(bss1) causes behavioral paralysis that resembles paralysis caused by mechanical stimulation, in many aspects. Electrophysiology shows that photostimulation evokes abnormal seizure-like neuronal firing in para(bss1) followed by a quiescent period resembling synaptic failure and apparently responsible for paralysis. The pattern of neuronal activity concludes with seizure-like activity just prior to recovery (recovery)...
June 19, 2017: Genetics
https://www.readbyqxmd.com/read/28628556/real-time-imaging-of-epileptic-seizures-in-rats-using-electrical-impedance-tomography
#13
Lei Wang, Yang Sun, Xinmin Xu, Xiuzhen Dong, Feng Gao
The presence of multiple or diffuse lesions on imaging is a contraindication to surgery for patients with intractable epilepsy. Theoretically, as a functional imaging technique, electrical impedance tomography (EIT) can accurately image epileptic foci. However, most current studies are limited to examining epileptic spikes and few studies use EIT for real-time imaging of seizure activity. Moreover, little is known about changes in electrical impedance during seizures. In this study, we used EIT to monitor seizure progression in real time and analyzed changes in electrical impedance during seizures...
June 16, 2017: Neuroreport
https://www.readbyqxmd.com/read/28627626/hmgb1-regulates-p-glycoprotein-expression-in-status-epilepticus-rat-brains-via-the-rage-nf-%C3%AE%C2%BAb-signaling-pathway
#14
Yuan Xie, Nian Yu, Yan Chen, Kang Zhang, Hai-Yan Ma, Qing Di
Overexpression of P-glycoprotein (P-gp) in the brain is an important mechanism involved in drug‑resistant epilepsy (DRE). High-mobility group box 1 (HMGB1), an inflammatory cytokine, significantly increases following seizures and may be involved in upregulation of P‑gp. However, the underlying mechanisms remain elusive. The aim of the present study was to evaluate the role of HMGB1 and its downstream signaling components, receptor for advanced glycation end‑product (RAGE) and nuclear factor‑κB (NF‑κB), on P‑gp expression in rat brains during status epilepticus (SE)...
June 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28626979/electro-clinical-criteria-and-surgical-outcome-is-there-a-difference-between-mesial-and-lesional-temporal-lobe-epilepsy
#15
M Wassenaar, F S S Leijten, G-J de Haan, S G Uijl, J W Sander
OBJECTIVES: Mesial temporal lobe epilepsy syndrome (MTLE) with specific electrophysiological and clinical characteristics and hippocampal sclerosis (HS) on MRI is considered the prototype of a syndrome with good surgical prognosis. Ictal onset zones in MTLE have been found to extend outside the hippocampus and neocortical seizures often involve mesial structures. It can, thus, be questioned whether MTLE with HS is different from lesional temporal epilepsies with respect to electro-clinical characteristics and surgical prognosis...
June 18, 2017: Acta Neurologica Scandinavica
https://www.readbyqxmd.com/read/28626029/a-homozygous-founder-mutation-in-trappc6b-associates-with-a-neurodevelopmental-disorder-characterised-by-microcephaly-epilepsy-and-autistic-features
#16
Isaac Marin-Valencia, Gaia Novarino, Anide Johansen, Basak Rosti, Mahmoud Y Issa, Damir Musaev, Gifty Bhat, Eric Scott, Jennifer L Silhavy, Valentina Stanley, Rasim O Rosti, Jeremy W Gleeson, Farhad B Imam, Maha S Zaki, Joseph G Gleeson
BACKGROUND: Transport protein particle (TRAPP) is a multisubunit complex that regulates membrane trafficking through the Golgi apparatus. The clinical phenotype associated with mutations in various TRAPP subunits has allowed elucidation of their functions in specific tissues. The role of some subunits in human disease, however, has not been fully established, and their functions remain uncertain. OBJECTIVE: We aimed to expand the range of neurodevelopmental disorders associated with mutations in TRAPP subunits by exome sequencing of consanguineous families...
June 16, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28625947/intracranial-investigation-of-a-patient-with-nodular-heterotopia-and-hippocampal-sclerosis-dealing-with-a-dual-pathology
#17
Lady Diana Ladino, Chelsea Dash, Adam Wu, Jose Francisco Tellez-Zenteno
The pre-operative assessment and surgical management of patients with dual pathology is challenging. We describe a patient with drug-resistant focal epilepsy with hippocampal sclerosis and extensive periventricular nodular heterotopia in the same hemisphere. The semiology, scalp EEG, and imaging were divergent, but the presence of focal interictal and ictal epileptic discharges of the putative ictal onset zone resulted in successful localization of the epileptogenic zone. A less aggressive resection was performed based on intracranial EEG recording...
June 12, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28625584/the-role-of-prophylactic-antiepileptic-drugs-for-seizure-prophylaxis-in-meningioma-surgery-a-systematic-review
#18
REVIEW
Abdurrahman I Islim, Stephen McKeever, Ter-Er Kusu-Orkar, Michael D Jenkinson
Meningiomas are the commonest type of primary brain tumours. Whilst most patients are seizure-free prior to surgery, antiepileptic drugs are frequently administered to reduce the risk of developing post-operative seizures. However, evidence to support their efficacy in providing this outcome is sparse. To this end, we performed a systematic review to assess the impact of prophylactic antiepileptic drugs on post-operative epilepsy rates in seizure-naïve patients undergoing craniotomy for resection of meningiomas...
June 15, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28624720/retention-of-perampanel-in-adults-with-pharmacoresistant-epilepsy-at-a-single-tertiary-care-center
#19
Tim Wehner, Shahidul Mannan, Sanchit Turaga, Kirtana Vallabhaneni, Hao Meng Yip, Carys Wiggans, Rohit Shankar, John S Duncan, Josemir W Sander
RATIONALE: Observational data on antiepileptic drugs (AEDs) inform about their use in clinical practice. We describe our clinical experience with perampanel (PER) in a large UK tertiary epilepsy center. METHODS: Adults initiated on PER between October 2012 and March 2015 were followed until they discontinued PER or 10 September 2016. Data on epilepsy syndrome, duration, seizure types, concomitant and previous AED use, PER dosing, efficacy and side effects were recorded...
June 15, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28624414/corneal-kindled-c57bl-6-mice-exhibit-saturated-dentate-gyrus-long-term-potentiation-and-associated-memory-deficits-in-the-absence-of-overt-neuron-loss
#20
Gregory J Remigio, Jaycie L Loewen, Sage Heuston, Colin Helgeson, H Steve White, Karen S Wilcox, Peter J West
Memory deficits have a significant impact on the quality of life of patients with epilepsy and currently no effective treatments exist to mitigate this comorbidity. While these cognitive comorbidities can be associated with varying degrees of hippocampal cell death and hippocampal sclerosis, more subtle changes in hippocampal physiology independent of cell loss may underlie memory dysfunction in many epilepsy patients. Accordingly, animal models of epilepsy or epileptic processes exhibiting memory deficits in the absence of cell loss could facilitate novel therapy discovery...
June 14, 2017: Neurobiology of Disease
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