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https://www.readbyqxmd.com/read/28611277/association-of-rasgrf1-methylation-with-epileptic-seizures
#1
Xiaoni Chen, Xi Peng, Liang Wang, Xinwei Fu, Ji Xiu Zhou, Binglin Zhu, Jing Luo, Xuefeng Wang, Zheng Xiao
DNA methylation, one of the mechanisms of epigenetic regulation, has been suggested to be related with epilepsy. RASgrf1 is a paternally imprinted gene and has a differentially methylated region (DMR) at the promoter that can silence gene expression. We have previously observed the down-regulation of RASgrf1 in the temporal neocortex of epilepsy patients and in the hippocampus of epileptic animals. Here, we further explored the dynamic change (1-day acute period, 10-day latent period and 45-day chronic phase) of DNA methylation and RASgrf1 expression after acute epileptic seizures in kainic acid (KA)-treated mice, and we observed the impact of N-phthalyl-L-tryptophan (RG108), a DNA methyltransferase (DNMT) inhibitor, on an acute epileptic model by polymerase chain reaction (PCR), western blotting, and bisulfite sequencing PCR (BSP)...
May 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28608989/seizure-severity-dependent-selective-vulnerability-of-the-granule-cell-layer-and-aberrant-neurogenesis-in-the-rat-hippocampus
#2
Takeshi Uemori, Keiko Toda, Tatsunori Seki
The pilocarpine-induced status epilepticus (SE) rodent model has been commonly used to analyze the mechanisms of human temporal lobe epilepsy. Recent studies using this model have demonstrated that epileptic seizures lead to increased adult neurogenesis of the dentate granule cells, and cause abnormal cellular organization in dentate neuronal circuits. In this study, we examined these structural changes in rats with seizures of varying severity. In rats with frequent severe seizures, we found a clear loss of Prox1 and NeuN expression in the dentate granule cell layer (GCL), which was confined mainly to the suprapyramidal blade of the GCL at the septal and middle regions of the septo-temporal axis of the hippocampus...
June 13, 2017: Hippocampus
https://www.readbyqxmd.com/read/28601603/enhanced-classical-complement-pathway-activation-and-altered-phagocytosis-signaling-molecules-in-human-epilepsy
#3
Season K Wyatt, Thomas Witt, Nicholas M Barbaro, Aaron A Cohen-Gadol, Amy L Brewster
Microglia-mediated neuroinflammation is widely associated with seizures and epilepsy. Although microglial cells are professional phagocytes, less is known about the status of this phenotype in epilepsy. Recent evidence supports that phagocytosis-associated molecules from the classical complement (C1q-C3) play novel roles in microglia-mediated synaptic pruning. Interestingly, in human and experimental epilepsy, altered mRNA levels of complement molecules were reported. Therefore, to identify a potential role for complement and microglia in the synaptodendritic pathology of epilepsy, we determined the protein levels of classical complement proteins (C1q-C3) along with other phagocytosis signaling molecules in human epilepsy...
June 7, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28600359/ictal-pain-in-focal-non-convulsive-status-epilepticus
#4
Sara Casciato, Alessandra Morano, Jinane Fattouch, Martina Fanella, Mariarita Albini, Anna Teresa Giallonardo, Carlo Di Bonaventura
We report an adult with acute unilateral pain as isolated manifestation of acute symptomatic focal non-convulsive status epilepticus. Pain is rarely a manifestation of epileptic seizures. Traditionally, painful seizures have been thought to originate in either the parietal or temporal lobes, but their localising value is debatable. Recent functional neuroimaging studies and electrophysiological findings obtained by using intracerebral recordings have shown the involvement of the insular cortex along with several other brain structures in the processing of painful inputs, comprising a more widespread anatomo-functional network...
June 9, 2017: Practical Neurology
https://www.readbyqxmd.com/read/28597918/inflammation-in-the-developing-rat-modulates-astroglial-reactivity-to-seizures-in-the-mature-brain
#5
Zuzanna Setkowicz, Emilia Kosonowska, Krzysztof Janeczko
Astrocytes participate in neuronal development and excitability, and produce factors enhancing or suppressing inflammatory processes occurring due to neurodegenerative diseases, such as epilepsy. Seizures, in turn, trigger the release of inflammatory mediators, causing structural and functional changes in the brain. Therefore, it appears reasonable to determine whether generalized inflammation at developmental periods can affect astrocyte reactivity to epileptic seizures occurring in the adult brain. Lipopolysaccharide (LPS) was injected in 6- or 30-day-old rats (P6 or P30, respectively)...
June 9, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28593865/the-semiology-of-benign-focal-epilepsy-with-affective-symptoms
#6
Fábio A Nascimento, Márcio A Sotero de Menezes, Cristiane A Simao, Bruno T Takeshita, Samanta F Blattes da Rocha, Pedro A Kowacs
Benign focal epilepsy with affective symptoms (BFEAS) is a rare childhood epilepsy syndrome essentially characterized by "epileptic attacks with affective symptoms of a terrifying type". Since the original description, approximately 50 cases have been reported. To our knowledge, however, none of the studies included video-EEG data. Herein, we detail the electroclinical features of a neurodevelopmentally normal 9-year-old boy with epilepsy since the age of 2 years. His seizure semiology essentially consisted of nocturnal focal seizures featuring abrupt fear and autonomic phenomena (such as excessive sweating, repeated swallowing, and coughing), associated with impaired consciousness...
June 7, 2017: Epileptic Disorders: International Epilepsy Journal with Videotape
https://www.readbyqxmd.com/read/28564591/whole-transcriptome-screening-reveals-the-regulatory-targets-and-functions-of-long-non-coding-rna-h19-in-epileptic-rats
#7
Chun-Lei Han, Yun-Peng Liu, Xue-Min Zhao, Kai-Liang Wang, Ning Chen, Wei Hu, Jian-Guo Zhang, Ming Ge, Fan-Gang Meng
Understanding the molecular mechanisms mediating epileptogenesis may lead to the development of preventative therapies against epilepsy. Our previous study demonstrated that the long non-coding RNA H19 contributes to epileptogenesis by aggravating status epilepticus-induced neuronal loss, glial cell activation, mossy fiber sprouting, and cognitive impairments in epileptic rats. However, the systematic functions and downstream targets of H19 associated with epileptogenesis are still unknown. In the present study, high-throughput microarray analysis was used to explore the influence of H19 on gene expression in an epileptic rat model...
May 28, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28555777/early-ictal-and-interictal-patterns-in-fires-the-sparks-before-the-blaze
#8
Raquel Farias-Moeller, Luca Bartolini, Katelyn Staso, John M Schreiber, Jessica L Carpenter
OBJECTIVE: Febrile infection-related epilepsy syndrome (FIRES) is a catastrophic epileptic encephalopathy described as explosive onset of super refractory status epilepticus (SRSE) in previously healthy children. We describe electroencephalography (EEG) abnormalities in the hyperacute phase of FIRES, with the aim of contributing to the diagnostic characterization of a syndrome otherwise lacking specific biomarkers. METHODS: This is a retrospective single-center, case series of seven children with FIRES...
May 26, 2017: Epilepsia
https://www.readbyqxmd.com/read/28551036/a-patient-with-muenke-syndrome-manifesting-migrating-neonatal-seizures
#9
Yukimune Okubo, Taro Kitamura, Mai Anzai, Wakaba Endo, Takehiko Inui, Yusuke Takezawa, Sato Suzuki-Muromoto, Takuya Miyabayashi, Noriko Togashi, Hiroshi Oba, Hirotomo Saitsu, Naomichi Matsumoto, Kazuhiro Haginoya
We report a patient with Muenke syndrome who had repetitive apneic spell followed by focal status epilepticus in the early infancy. Ictal EEG showed focal spikes bursts originated from the left hemisphere and sifted to the right hemisphere, during which he had migrating tonic seizures from right side of the body to the left side of the body. Brain MRI showed abnormal development of bilateral hippocampus, which was characterized as abnormal folding of hippocampal gyri. However, the long-term seizure prognosis was favorable...
May 24, 2017: Brain & Development
https://www.readbyqxmd.com/read/28543780/intranasal-midazolam-versus-rectal-diazepam-for-the-management-of-canine-status-epilepticus-a-multicenter-randomized-parallel-group-clinical-trial
#10
M Charalambous, S F M Bhatti, L Van Ham, S Platt, N D Jeffery, A Tipold, J Siedenburg, H A Volk, D Hasegawa, A Gallucci, G Gandini, M Musteata, E Ives, A E Vanhaesebrouck
BACKGROUND: Intranasal administration of benzodiazepines has shown superiority over rectal administration for terminating emergency epileptic seizures in human trials. No such clinical trials have been performed in dogs. OBJECTIVE: To evaluate the clinical efficacy of intranasal midazolam (IN-MDZ), via a mucosal atomization device, as a first-line management option for canine status epilepticus and compare it to rectal administration of diazepam (R-DZP) for controlling status epilepticus before intravenous access is available...
May 24, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28542864/circadian-clustering-of-spontaneous-epileptic-seizures-emerges-after-pilocarpine-induced-status-epilepticus
#11
Julika Pitsch, Albert J Becker, Susanne Schoch, Johannes Alexander Müller, Marco de Curtis, Vadym Gnatkovsky
OBJECTIVE: Seizures in mesial temporal lobe epilepsy (MTLE) associated with hippocampal sclerosis are thought to develop with various latency intervals after an initial transient brain insult. To study seizure dynamics after an initial transient precipitating insult in a systematic fashion, we utilized continuous video-electroencephalography (EEG) monitoring after the induction of status epilepticus (SE) in a mouse MTLE model. METHODS: Continuous 24/7 video/telemetric hippocampal EEG recordings in the systemic pilocarpine MTLE mouse model...
May 24, 2017: Epilepsia
https://www.readbyqxmd.com/read/28535499/the-role-of-5-htr6-in-mossy-fiber-sprouting-activating-fyn-and-p-erk1-2-in-pilocarpine-induced-chronic-epileptic-rats
#12
Wanhui Lin, Wenli Huang, Shenggen Chen, Mingxing Lin, Qingyu Huang, Huapin Huang
OBJECTIVE: Our primary objective is to verify whether 5-HTR6 is involved in the development of mossy fiber sprouting (MFS), and to determine how the progression of MFS is affected by 5-HTR6. METHODS: A total of 90 male adult Sprague-Dawley rats were allocated into either the control group (n=36) or the epileptic group (n=54). Status epilepticus (SE) of rats was induced by the intraperitoneal (i.p.) injection of LiCl-pilocarpine. We conducted our experiments in two stages...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28528284/biomarkers-in-epilepsy-a-modelling-perspective
#13
REVIEW
Sven C van Dijkman, Rob A Voskuyl, Elizabeth C de Lange
Biomarkers can be categorised from type 0 (genotype or phenotype), through 6 (clinical scales), each level representing a part of the processes involved in the biological system and drug treatment. This classification facilitates the identification and connection of information required to fully (mathematically) model a disease and its treatment using integrated information from biomarkers. Two recent reviews thoroughly discussed the current status and development of biomarkers for epilepsy, but a path towards the integration of such biomarkers for the personalisation of anti-epileptic drug treatment is lacking...
May 17, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28528211/intravenous-levetiracetam-vs-phenytoin-for-status-epilepticus-and-cluster-seizures-a-prospective-randomized-study
#14
Arunodaya R Gujjar, Ramachandiran Nandhagopal, Poovathoor C Jacob, Abdulhakeem Al-Hashim, Khalfan Al-Amrani, Shyam S Ganguly, Abdullah Al-Asmi
PURPOSE: Status Epilepticus (SE) is a common medical emergency carrying a high morbidity and mortality. Levetiracetam (LEV) is a novel anticonvulsant effective against varied seizures. Few prospective studies have addressed its use in SE. We aimed to examine the efficacy of intravenous LEV in controlling SE and cluster attacks of seizures (CS), in comparison with IV phenytoin (DPH), using a prospective, randomized study design. METHOD: Adult patients with SE or CS, following an initial dose of IV benzodiazepine to control ongoing seizure, were randomized to receive either medication...
July 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28521671/the-anticonvulsant-effects-of-ketogenic-diet-on%C3%A2-epileptic-seizures-and-potential-mechanisms
#15
Yifan Zhang, Jingwei Xu, Yingchao Zhang, Wei Yang, Bingjin Li
Epilepsy is one of the most commonly diagnosed neurologic disorders with characteristics of epileptic seizures. Although the multitude of anticonvulsant drugs has been developed, recurrent epileptic seizures remain intractable and contribute to the serious morbidity worldwide. Recently, increasing studies have established the beneficial effects of ketogenic diet (KD) on epileptic seizure reduction. Both basic experiments and clinical trials demonstrated that KD significantly reduced seizure frequency with mild adverse effects...
May 17, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28506347/-association-between-autism-spectrum-disorder-and-epilepsy-in-children
#16
Song-Li Mei, Zhao Zhang, Xin Liu, Ting-Ting Gao, Xin-Xian Peng
OBJECTIVE: To examine the association between autism spectrum disorder (ASD) and epilepsy in children. METHODS: A total of 190 children with ASD were enrolled. A self-designed questionnaire, Childhood Autism Rating Scale, and Autism Behavior Checklist were used to determine the association between ASD and epilepsy. RESULTS: Among the 190 children with ASD, 20 (10.5%) had epileptic seizures and 12 (6.3%) were diagnosed with epilepsy. The rates of abnormal physical development and hearing disorders before the age of one year were significantly higher in ASD children with epileptic seizures than in those without epileptic seizures (P<0...
May 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28499835/increase-of-reactive-oxygen-species-generation-in-cerebral-cortex-slices-after-the-transiently-enhanced-metabolic-activity
#17
Toru Sasaki, Takuji Awaji, Kazuyoshi Shimada, Haruyo Sasaki
Under certain conditions such as hypoxia-reoxygenation, the generation of reactive oxygen species (ROS) increases following hypoxia caused by a decreased oxygen supply. As another hypoxic condition, an excess neural activity status including epileptic seizure induces a decrease in tissue oxygen partial pressure (pO2) caused by enhanced oxygen utilization; however, whether ROS generation increases following the hypoxic status induced by transiently enhanced energy metabolism in brain tissue currently remains unknown...
May 10, 2017: Neuroscience Research
https://www.readbyqxmd.com/read/28497610/epilepsia-partialis-continua-after-an-anterior-circulation-ischaemic-stroke
#18
C Bentes, A C Franco, A R Peralta, P Viana, H Martins, C Morgado, C Casimiro, C Fonseca, R Geraldes, P Canhão, T Pinho E Melo, T Paiva, J M Ferro
BACKGROUND AND PURPOSE: Although cerebrovascular disorders are the main cause of epilepsia partialis continua (EPC) in adulthood, the frequency of EPC after stroke is unknown. The aim was to prospectively ascertain its frequency 1 year after an ischaemic stroke. METHODS: This was a prospective study of consecutive acute anterior circulation ischaemic stroke patients, previously independent, with an admission National Institutes of Health Stroke Scale score ≥4, an acute ischaemic lesion on imaging and no previous epileptic seizures...
May 12, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28495975/short-term-depression-of-sprouted-mossy-fiber-synapses-from-adult-born-granule-cells
#19
William D Hendricks, Yang Chen, AeSoon L Bensen, Gary L Westbrook, Eric Schnell
Epileptic seizures potently modulate hippocampal adult neurogenesis, and adult-born dentate granule cells contribute to the pathologic retrograde sprouting of mossy fiber axons, both hallmarks of temporal lobe epilepsy. The characteristics of these sprouted synapses, however, have been largely unexplored, and the specific contribution of adult-born granule cells to functional mossy fiber sprouting is unknown, primarily due to technical barriers in isolating sprouted mossy fiber synapses for analysis. Here, we used DcxCreER(T2) transgenic mice to permanently pulse-label age-defined cohorts of granule cells born either before or after pilocarpine-induced status epilepticus (SE)...
June 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28481152/aspirin-attenuates-spontaneous-recurrent-seizures-in-the-chronically-epileptic-mice
#20
Kun Zhu, Ming Hu, Bo Yuan, Jian-Xin Liu, Yong Liu
OBJECTIVE: Neuroinflammatory processes are pathologic hallmarks of both experimental and human epilepsy, and could be implicated in the neuronal hyperexcitability. Aspirin represents one of the non-selective nonsteroidal anti-inflammatory drugs with fewer side effects in long-term application. This study was carried out to assess the anti-epileptic effects of aspirin when administered during the chronic stage of temporal lobe epilepsy [TLE] in mice. The alteration of hippocampal neurogenesis was also examined for raising a possible mechanism underlying the protective effect of anti-inflammatory treatment in the TLE...
May 7, 2017: Neurological Research
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