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Non Epileptic Seizures

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https://www.readbyqxmd.com/read/28927333/vulnerability-to-psychogenic-non-epileptic-seizures-is-linked-to-low-neuropeptide-y-levels
#1
Michael Winterdahl, Alessandro Miani, Moana J H Vercoe, Antonia Ciovica, Lori Uber-Zak, Charlotte Ulrikka Rask, Paul J Zak
Psychogenic non-epileptic seizures (PNES) is a conversion disorder that reflects underlying psychological distress. Female patients with PNES often present with a history of prolonged stressors, especially sexual abuse. In the current study, we studied the relationship between neuropeptide Y (NPY) and PNES symptoms in women with a history of sexual abuse. NPY has been associated with resilience to stress and we hypothesized that low levels would increase the extent and severity of PNES symptoms in this patient population...
September 19, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28926747/ictal-source-imaging-and-electroclinical-correlation-in-self-limited-epilepsy-with-centrotemporal-spikes
#2
Jørgen Alving, Martin Fabricius, Ivana Rosenzweig, Sándor Beniczky
PURPOSE: To elucidate the localization of ictal EEG activity, and correlate it to semiological features in self-limited epilepsy with centrotemporal spikes (formerly called "benign epilepsy with centrotemporal spikes"). METHODS: We have performed ictal electric source imaging, and we analysed electroclinical correlations in three patients with self-limited epilepsy with centrotemporal spikes. RESULTS: The source of the evolving rhythmic ictal activity (9...
September 14, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28923596/chemically-activated-luminopsins-allow-optogenetic-inhibition-of-distributed-nodes-in-an-epileptic-network-for-non-invasive-and-multi-site-suppression-of-seizure-activity
#3
Jack K Tung, Fu Hung Shiu, Kevin Ding, Robert E Gross
Although optogenetic techniques have proven to be invaluable for manipulating and understanding complex neural dynamics over the past decade, they still face practical and translational challenges in targeting networks involving multiple, large, or difficult-to-illuminate areas of the brain. We utilized inhibitory luminopsins to simultaneously inhibit multiple limbic structures of the rat brain in a hardware-independent and cell-type specific manner to suppress seizure activity in a rat model of epilepsy. In addition to elucidating mechanisms of seizure suppression never directly demonstrated before, this work also illustrates how precise multi-focal control of pathological circuits can be advantageous for the treatment of epilepsy, which may also be applicable to the treatment and understanding of other neurological disorders involving broad neural circuits...
September 15, 2017: Neurobiology of Disease
https://www.readbyqxmd.com/read/28912749/functional-connectivity-of-the-corpus-callosum-in-epilepsy-patients-with-secondarily-generalized-seizures
#4
Syu-Jyun Peng, Yue-Loong Hsin
The corpus callosum (CC) plays an important role in generalization of seizure activity. We used resting-state function magnetic resonance imaging (rs-fMRI) to investigate the regional and interregional functional connectivity of CC in patients with magnetic resonance imaging (MRI)-negative and secondarily generalized seizures. We measured the multi-regional coherences of blood oxygen level-dependent (BOLD) signals via rs-fMRI, cortical thickness via high-resolution T1-weighted MRI, and white matter (WM) integrity via diffusion-tensor imaging in 16 epilepsy patients as well as in 16 age- and gender-matched healthy subjects...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28899008/phenotypic-analysis-of-303-multiplex-families-with-common-epilepsies
#5
(no author information available yet)
Gene identification in epilepsy has mainly been limited to large families segregating genes of major effect and de novo mutations in epileptic encephalopathies. Many families that present with common non-acquired focal epilepsies and genetic generalized epilepsies remain unexplained. We assembled a cohort of 'genetically enriched' common epilepsies by collecting and phenotyping families containing multiple individuals with unprovoked seizures. We aimed to determine if specific clinical epilepsy features aggregate within families, and whether this segregation of phenotypes may constitute distinct 'familial syndromes' that could inform genomic analyses...
August 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28893434/biallelic-mutations-in-szt2-cause-a-discernible-clinical-entity-with-epilepsy-developmental-delay-macrocephaly-and-a-dysmorphic-corpus-callosum
#6
Yuji Nakamura, Yasuko Togawa, Yusuke Okuno, Hideki Muramatsu, Kazuhiko Nakabayashi, Yoko Kuroki, Daisuke Ieda, Ikumi Hori, Yutaka Negishi, Takao Togawa, Ayako Hattori, Seiji Kojima, Shinji Saitoh
Mutations in SZT2 were first reported in 2013 as a cause of early-onset epileptic encephalopathy. Because only five reports have been published to date, the clinical features associated with SZT2 remain unclear. We herein report an additional patient with biallelic mutations in SZT2. The proband, a four-year-old girl, showed developmental delay and seizures from two years of age. Her seizures were not intractable and readily controlled by valproate. She showed mildly dysmorphic facies with macrocephaly, high forehead, and hypertelorism, and also had pectus carinatum...
September 8, 2017: Brain & Development
https://www.readbyqxmd.com/read/28880996/dravet-syndrome-and-its-mimics-beyond-scn1a
#7
REVIEW
Dora Steel, Joseph D Symonds, Sameer M Zuberi, Andreas Brunklaus
OBJECTIVE: Dravet syndrome (DS) is a severe developmental and epileptic encephalopathy characterized by the onset of prolonged febrile and afebrile seizures in infancy, and evolving to drug-resistant epilepsy with accompanying cognitive, behavioral, and motor impairment. Most cases are now known to be caused by pathogenic variants in the sodium channel gene SCN1A, but several other genes have also been implicated. This review examines current understanding of the role of non-SCN1A genes in DS, and what is known about phenotypic similarities and differences...
September 7, 2017: Epilepsia
https://www.readbyqxmd.com/read/28875427/epileptic-seizures-in-nonalcoholic-wernicke-s-encephalopathy-a-case-report-and-literature-review
#8
Wenjin Shang, Xiuhui Chen, Xunhua Li, Hongbing Chen, Shujin Tang, Hua Hong
Wernicke encephalopathy (WE) is characterized by eye signs, cerebellar dysfunction, and confusion. Epileptic seizures are rare in nonalcoholic WE. We reviewed the clinical, laboratory, radiological, and prognostic characteristics of nonalcoholic WE accompanied by epileptic seizures. We reported 1 case and searched similar cases using PubMed, WoK, Ovid, and Embase. WE was diagnosed according to dietary deficiencies, clinical symptoms and brain magnetic resonance imaging (MRI). We reviewed 13 patients (median age, 27 years; 5 men) with clear histories of thiamine deficiency and symptoms of typical WE...
September 6, 2017: Metabolic Brain Disease
https://www.readbyqxmd.com/read/28866731/classification-of-focal-and-non-focal-epileptic-seizures-using-multi-features-and-svm-classifier
#9
N Sriraam, S Raghu
Identifying epileptogenic zones prior to surgery is an essential and crucial step in treating patients having pharmacoresistant focal epilepsy. Electroencephalogram (EEG) is a significant measurement benchmark to assess patients suffering from epilepsy. This paper investigates the application of multi-features derived from different domains to recognize the focal and non focal epileptic seizures obtained from pharmacoresistant focal epilepsy patients from Bern Barcelona database. From the dataset, five different classification tasks were formed...
September 2, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28842725/-diagnosis-of-non-epileptic-paroxysmal-disorders-and-epileptic-seizures
#10
REVIEW
S Noachtar, B Güldiken
Non-epileptic paroxysmal disorders may clinically manifest in a similar way to epileptic seizures and have to be considered in the differential diagnosis of epilepsy. Syncope, non-epileptic psychogenic seizures, paroxysmal movement disorders, migraine, transient ischemic attacks and parasomnia constitute the major differential diagnoses. A meticulous history and a third party description are useful for the differential diagnosis. Neurological, psychiatric and cardiological examinations are required for the correct differential diagnosis...
August 25, 2017: Der Nervenarzt
https://www.readbyqxmd.com/read/28842233/pattern-of-corticospinal-projections-defined-by-brain-mapping-during-resective-epilepsy-surgery-in-a-patient-with-congenital-hemiparesis-and-intractable-epilepsy
#11
Chen-Ya Yang, Hsin-Hung Chen, Chien Chen, Jan-Wei Chiu, Chen-Liang Chou, Tsui-Fen Yang
BACKGROUND: Congenital or early acquired brain structural lesions often cause contralateral hemiparesis as well as cognitive deficits, developmental delays, and seizures. Among them, seizure is the most debilitating condition, as it greatly impairs the quality of life in both the affected individuals and their caregivers and prevents them from active social participation. CASE DESCRIPTION: Here, we present a 34-year-old man with hemiparesis and early-onset seizures since childhood owing to a congenital brain lesion...
August 22, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28832003/atonic-seizures-in-children-with-surgically-remediable-epilepsy-a-motor-system-seizure-phenotype
#12
Julia Scholly, Fabrice Bartolomei, Maria Paola Valenti-Hirsch, Clotilde Boulay, Anne De Saint Martin, Alexander Timofeev, Pierre Kehrli, Edouard Hirsch
Atonic seizures are common in some epileptic syndromes beginning in infancy or early childhood but they are rarely described in epilepsy with focal seizures of structural aetiology. We aimed to characterize the electroclinical features of atonic seizures in surgically remediable paediatric patients and to study the spatiotemporal organization of the underlying epileptogenic networks. We retrospectively analysed two consecutive, longitudinally evaluated and surgically treated paediatric patients presenting with atonic seizures as a manifestation of pharmacoresistant epilepsy of structural aetiology, evidenced by scalp- and stereotactic intracerebral video-EEG-recordings...
August 23, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28818511/vitamin-d-enhances-antiepileptic-and-cognitive-effects-of-lamotrigine-in-pentylenetetrazole-kindled-rats
#13
Ali F Abdel-Wahab, Mohamed A Afify, Amal M Mahfouz, Naiyer Shahzad, Ghazi A Bamagous, Saeed S Al Ghamdi
Despite long use of antiepileptic drugs, it remains a challenge to achieve seizure control while reducing adverse effects and preventing cognitive impairment. Several lines of evidence suggest a role of vitamin D in epilepsy. So this study aimed to investigate the effect of vitamin D on epileptogenesis, cognitive dysfunction and antiepileptic activity of lamotrigine, in a rat model of chemical kindling. Rats were kindled by pentylenetetrazole injections every other day over four weeks, together with daily oral treatment by either vehicle, vitamin D, lamotrigine or combination of vitamin D and lamotrigine...
August 14, 2017: Brain Research
https://www.readbyqxmd.com/read/28808801/post-operative-seizures-after-burr-hole-evacuation-of-chronic-subdural-hematomas-is-prophylactic-anti-epileptic-medication-needed
#14
Gabriel Flores, Juan C Vicenty, Emil A Pastrana
INTRODUCTION: There are limited data with regards to the associated risk of post-operative seizures in patients with surgically treated chronic subdural hematomas (CSDHs). The use of anti-epileptic drugs (AEDs) is associated with significant side effects. METHODS: A retrospective chart review was performed on patients operated via burr hole for CSDH in our institution from 2004 to 2013. Post-operative seizures at 1-year follow-up were identified. Demographic data, medical history, and imaging characteristics were recorded...
August 15, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28808783/post-stroke-seizures-are-clinically-underestimated
#15
Carla Bentes, Hugo Martins, Ana Rita Peralta, Carlos Casimiro, Carlos Morgado, Ana Catarina Franco, Ana Catarina Fonseca, Ruth Geraldes, Patrícia Canhão, Teresa Pinho E Melo, Teresa Paiva, José M Ferro
Cerebrovascular disease is the leading cause of epilepsy in adults, although post-stroke seizures reported frequency is variable and few studies used EEG in their identification. To describe and compare EEG and clinical epileptic manifestations frequency in patients with an anterior circulation ischaemic stroke. Prospective study of acute anterior circulation ischaemic stroke patients, consecutively admitted to a Stroke Unit over 24 months and followed-up for 1 year. All patients underwent standardized clinical and diagnostic assessment...
August 14, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28808618/neuroimaging-studies-in-patients-with-psychogenic-non-epileptic-seizures-a-systematic-meta-review
#16
REVIEW
Marco Mcsweeney, Markus Reuber, Liat Levita
Psychogenic Non-epileptic Seizures (PNES) are 'medically unexplained' seizure-like episodes which superficially resemble epileptic seizures but which are not caused by epileptiform discharges in the brain. While many experts see PNES disorder as a multifactorial biopsychosocial condition, little is known about the neurobiological processes which may predispose, precipitate and/or perpetuate PNES symptomology. This systematic meta-review advances our knowledge and understanding of the neurobiological correlates of PNES by providing an up-to-date assessment of neuroimaging studies performed on individuals with PNES...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28805769/-psychiatry-of-the-future-an-overview-of-foreign-scientists-opinions-of-the-position-of-psychiatry-in-the-modern-world
#17
E D Belousova, N N Zavadenko, A A Kholin, A A Sharkov
This review presents the recently published revised classifications of epilepsies and seizure types developed by the International League Against Epilepsy (ILAE). The Classification of Epilepsies includes several diagnostic levels (steps): 1) from seizure type to epilepsy type (generalized/focal/combined generalized and focal/unknown), 2) diagnosis of epilepsy syndrome 3) etiology (genetic/ structural/ infectious/ metabolic/ immune/unknown). A clinician can use any level of the classification. Operational classification of seizure types is replaced by the previous classification that was grounded on the anatomical basis...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28790891/adenosine-a1-receptor-antagonism-abolished-the-anti-seizure-effects-of-exogenous-ketone-supplementation-in-wistar-albino-glaxo-rijswijk-rats
#18
Zsolt Kovács, Dominic P D'Agostino, Arpád Dobolyi, Csilla Ari
The state of therapeutic ketosis can be achieved by using the ketogenic diet (KD) or exogenous ketone supplementation. It was suggested previously that the adenosinergic system may be involved in the mediating effect of KD on suppressing seizure activity in different types of epilepsies, likely by means of adenosine A1 receptors (A1Rs). Thus, we tested in the present study whether exogenous ketone supplements (ketone ester: KE, 2.5 g/kg/day; ketone salt/KS + medium chain triglyceride/MCT: KSMCT, 2.5 g/kg/day) applied sub-chronically (for 7 days) by intragastric gavage can modulate absence epileptic activity in genetically absence epileptic Wistar Albino Glaxo/Rijswijk (WAG/Rij) rats...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28770498/psychogenic-non-epileptic-seizures
#19
REVIEW
David K Chen, Esha Sharma, W Curt LaFrance
PURPOSE OF REVIEW: In this review, we elucidate the evaluation process involved in the diagnosis of psychogenic non-epileptic seizures (PNES). Minimum clinical criteria required to attain this diagnosis via a staged approach are delineated. The psychological underpinnings and management of PNES from the neurologists' perspective are also explored. RECENT FINDINGS: Helpful clues can be deduced from history-taking, seizure semiology, ictal/peri-ictal physical exam, and ictal/inter-ictal EEG data...
September 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28766407/anticonvulsant-effects-of-thiamine-on-pentylenetetrazole-induced-seizure-in-mice
#20
Azam Mesdaghinia, Marziye Alinejad, Alireza Abed, Azhdar Heydari, Hamid Reza Banafshe
OBJECTIVES: Thiamine serves as a cofactor for several enzymes involved in brain function and neurotransmitters biosynthesis. Thiamine-dependent enzymes are important for oxidant stress defenses. Several studies have reported that thiamine deficiency in the central nervous system reduces seizure threshold. The present study was designed to investigate the effect of acute and chronic administration of thiamine alone and in combination with sub-effective dose of diazepam on pentylenetetrazole (PTZ)-induced tonic-clonic seizures in mice...
August 2, 2017: Nutritional Neuroscience
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