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https://www.readbyqxmd.com/read/28432779/nmdar-independent-hippocampal-long-term-depression-impairment-after-status-epilepticus-in-a-lithium-pilocarpine-model-of-temporal-lobe-epilepsy
#1
Andrey D Ivanov, Aleksey V Zaitsev
Temporal lobe epilepsy is usually associated with cognitive decline and memory deficits. Despite numerous existing studies on various animal models, the mechanisms of these deficits remain largely unclear. A specific form of long-term synaptic efficacy changes - long-term depression (LTD) - is thought to play an important role in memory formation and learning. However, extremely little is known about the possible alteration of LTD induction and dynamics after a status epilepticus (SE). In the present work we investigated the acute and delayed effects of lithium-pilocarpine-induced SE on NMDAR-dependent and NMDAR-independent hippocampal LTD in vitro...
April 22, 2017: Synapse
https://www.readbyqxmd.com/read/28431366/efficacy-and-safety-of-a-video-eeg-protocol-for-genetic-generalized-epilepsies
#2
Luciana Rodrigues De Marchi, Jeana Torres Corso, Ana Carolina Zetehaku, Carina Gonçalves Pedroso Uchida, Mirian Salvadori Bittar Guaranha, Elza Márcia Targas Yacubian
INTRODUCTION: Video-EEG has been used to characterize genetic generalized epilepsies (GGE). For best performance, sleep recording, photic stimulation, hyperventilation, and neuropsychological protocols are added to the monitoring. However, risks and benefits of these video-EEG protocols are not well established. The aim of this study was to analyze the efficacy and safety of a video-EEG neuropsychological protocol (VNPP) tailored for GGE and compare its value with that of routine EEG (R-EEG)...
April 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28431266/reduced-abnormal-integration-of-adult-generated-granule-cells-does-not-attenuate-spontaneous-recurrent-seizures-in-mice
#3
Kun Zhu, Bo Yuan, Ming Hu, Gai-Feng Feng, Yong Liu, Jian-Xin Liu
Epileptic seizures lead to aberrant hippocampal neurogenesis, including increased proliferation of neural progenitors and abnormal integrations of newly generated granule cells - hilar ectopic granule cells (EGCs), mossy fiber sprouting (MFS), and hilar basal dendrites (HBDs). Previous results from ablating hippocampal neurogenesis after acute seizures have been controversial with regards to the development of spontaneous recurrent seizures (SRSs). While ablation of hippocampal newborn cells was effective, a sufficient decrease of subsequent abnormal integrations in chronically epileptic hippocampus was not well-established in these studies...
April 11, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28430674/continuous-eeg-in-pediatric-critical-care-yield-and-efficiency-of-seizure-detection
#4
Arnold J Sansevere, Elizabeth D Duncan, Mark H Libenson, Tobias Loddenkemper, Phillip L Pearl, Robert C Tasker
PURPOSE: Our goal was to define the duration of continuous EEG (cEEG) monitoring needed to adequately capture electrographic seizures and EEG status epilepticus in the pediatric intensive care unit using clinical and background EEG features. METHODS: Retrospective study of patients aged 1 month to 21 years admitted to a tertiary pediatric intensive care unit and undergoing cEEG (>3 hours). Clinical data collected included admission diagnosis, EEG background features, and time variables including time to first seizure after initiation of cEEG...
April 20, 2017: Journal of Clinical Neurophysiology: Official Publication of the American Electroencephalographic Society
https://www.readbyqxmd.com/read/28430051/reversible-postoperative-blindness-caused-by-bilateral-status-epilepticus-amauroticus-following-thoracolumbar-deformity-correction-case-report
#5
Tarik F Ibrahim, Rochelle T Sweis, Russ P Nockels
Postoperative vision loss (POVL) is a devastating complication and has been reported after complex spine procedures. Anterior ischemic optic neuropathy and posterior optic neuropathy are the 2 most common causes of POVL. Bilateral occipital lobe seizures causing complete blindness are rare and have not been reported as a cause of POVL after spine surgery with the patient prone. The authors report the case of a 67-year-old man without a history of seizures who underwent a staged thoracolumbar deformity correction and developed POVL 6 hours after surgery...
April 21, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28427858/mice-with-conditional-neurod1-knockout-display-reduced-aberrant-hippocampal-neurogenesis-but-no-change-in-epileptic-seizures
#6
Rebecca Brulet, Jingfei Zhu, Mahafuza Aktar, Jenny Hsieh, Kyung-Ok Cho
Adult neurogenesis is significantly increased in the hippocampus of rodent models of temporal lobe epilepsy (TLE). These adult-generated neurons have recently been shown to play a contributing role in the development of spontaneous recurrent seizures (SRS). In order to eventually target pro-epileptic adult neurogenesis in the clinical setting, it will be important to identify molecular players involved in the control of aberrant neurogenesis after seizures. Here, we focused on NeuroD1 (ND1), a member of the bHLH family of transcription factors previously shown to play an essential role in the differentiation and maturation of adult-generated neurons in the hippocampus...
April 18, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28427029/treatment-of-refractory-and-super-refractory-status-epilepticus-with-brivaracetam-a-cohort-study-from-two-german-university-hospitals
#7
Adam Strzelczyk, Isabel Steinig, Laurent M Willems, Philipp S Reif, Christian Senft, Martin Voss, Bernadette Gaida, Felix von Podewils, Felix Rosenow
PURPOSE: We aimed to ascertain the possible use of brivaracetam (BRV) as an option for treatment of status epilepticus (SE). METHODS: A review of medical records was carried out to detect BRV administration in SE patients treated in Frankfurt and Greifswald during the period February 2016 to January 2017. The primary outcome question concerned SE resolution after BRV initiation. RESULTS: During that period, BRV was started with eleven adult patients with SE...
April 17, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28427020/experiences-with-premorbid-sudep-discussion-among-participants-in-the-north-american-sudep-registry-nasr
#8
Jay Louik, Kyra Doumlele, Fizza Hussain, Laura Crandall, Jeffrey Buchhalter, Dale Hesdorffer, Elizabeth Donner, Orrin Devinsky, Daniel Friedman
The North American SUDEP Registry (NASR) is a repository of clinical data and biospecimens in cases of sudden unexpected death in epilepsy (SUDEP), a leading cause of epilepsy-related deaths. We assessed whether bereaved families were aware of SUDEP before their family member's death and their preferences for SUDEP disclosure. At enrollment, next-of-kin of SUDEP cases completed an intake interview, including questions assessing premorbid SUDEP discussions. Only 18.1% of the 138 next-of-kin recalled a previous discussion of SUDEP with a healthcare provider or support resource...
April 17, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28425097/seizure-frequency-correlates-with-loss-of-dentate-gyrus-gabaergic-neurons-in-a-mouse-model-of-temporal-lobe-epilepsy
#9
Paul S Buckmaster, Emily Abrams, Xiling Wen
Epilepsy occurs in one of 26 people. Temporal lobe epilepsy is common and can be difficult to treat effectively. It can develop after brain injuries that damage the hippocampus. Multiple pathophysiological mechanisms involving the hippocampal dentate gyrus have been proposed. The present study evaluated a mouse model of temporal lobe epilepsy to test which pathological changes in the dentate gyrus correlate with seizure frequency and help prioritize potential mechanisms for further study. FVB mice (n = 127) that had experienced status epilepticus after systemic treatment with pilocarpine 31 - 61 d earlier were video-monitored for spontaneous, convulsive seizures 9 h/d every day for 24 - 36 d...
April 20, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28424403/-non-convulsive-status-epilepticus-caused-by-hyponatremia-in-an-elderly-woman-a-case-report
#10
Yoshinori Kurauchi, Masahiro Yasaka, Keisuke Tokunaga, Masaki Saito, Shun Shimohama, Yasushi Okada
We report the case of a 67-year-old woman with non-convulsive status epilepticus (NCSE) due to hyponatremia. She had a history of psychogenic polydipsia but not epilepsy. She was admitted to our hospital with dysbulia. On admission, she was confused and disoriented (Glasgow Coma Scale: 6, E1V1M4). Magnetic resonance imaging of the brain showed no abnormalities. Laboratory test showed hyponatremia (Na<sup>+</sup> level: 115 mEq/L). The electroencephalography (EEG) showed a generalized slow wave of 5 Hz during recording...
April 2017: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/28423465/febrile-status-epilepticus-due-to-respiratory-syncytial-virus-infection
#11
Kazuhiro Uda, Katsuhiko Kitazawa
BACKGROUND: Febrile status epilepticus can have neurological sequelae. The type of sequelae, however, may depend on the etiology, including infections by viral agents such as the influenza virus. Respiratory syncytial virus (RSV) infection in childhood suggests a similar role for this pathogen. The aim of this study was to characterize febrile status epilepticus associated with RSV infection, and to determine whether this type of infection is a risk factor for neurological sequelae with febrile status epilepticus...
April 19, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28420263/an-unusual-cause-of-frequent-sudden-transient-unexplained-falls-and-new-onset-status-epilepticus-case-report-and-mini-review
#12
Dinesh Singh, Alford Dyer, Sherry Gu, Patrick McCarville, Annie Hess, Olugbenga Akingbola, Jane El-Dahr, Stephen Nelson
We report a 14-year old adolescent Caucasian female, who presented with frequent, sudden, transient, and unexplained falls leading to multiple serious injuries to her head and extremities requiring several visits to the emergency department. She was evaluated numerous times and imaging studies, echocardiogram, electrocardiogram, and electroencephalogram studies were all normal. She eventually presented to outside emergency department with dystonic posturing and status epilepticus and was transferred to our pediatric intensive care unit for further management...
April 1, 2017: Clinical Pediatrics
https://www.readbyqxmd.com/read/28416791/management-of-convulsive-status-epilepticus-in-children-an-adapted-clinical-practice-guideline-for-pediatricians-in-saudi-arabia
#13
Fahad A Bashiri, Muddathir H Hamad, Yasser S Amer, Manal M Abouelkheir, Sarar Mohamed, Amal Y Kentab, Mustafa A Salih, Mohammad N Al Nasser, Ayman A Al-Eyadhy, Mohammed A Al Othman, Tahani Al-Ahmadi, Shaikh M Iqbal, Ali M Somily, Hayfaa A Wahabi, Khalid J Hundallah, Ali H Alwadei, Raidah S Albaradie, Waleed A Al-Twaijri, Mohammed M Jan, Faisal Al-Otaibi, Abdulrahman M Alnemri, Lubna A Al-Ansary
No abstract text is available yet for this article.
April 2017: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/28416442/allopregnanolone-decreases-interictal-spiking-and-fast-ripples-in-an-animal-model-of-mesial-temporal-lobe-epilepsy
#14
Maxime Lévesque, Rochelle Herrington, Leila Leclerc, Michael A Rogawski, Massimo Avoli
The objective of this study was to characterize the impact of allopregnanolone, a neurosteroid that acts as a positive allosteric modulator of synaptic and extrasynaptic GABAA receptors, on interictal spikes and high-frequency oscillations (ripples: 80-200 Hz, fast ripples: 250-500 Hz) in the pilocarpine model of mesial temporal lobe epilepsy. Seven out of 25 Sprague-Dawley rats experiencing 1 h of pilocarpine-induced status epilepticus (SE) began treatment with allopregnanolone (9.6-12.8 mg/kg/day) on the following day...
April 14, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28413125/transient-dysautonomia-in-an-acute-phase-of-encephalopathy-with-biphasic-seizures-and-late-reduced-diffusion
#15
Yuko Ichimiya, Noriyuki Kaku, Yasunari Sakai, Fumiya Yamashita, Wakato Matsuoka, Mamoru Muraoka, Satoshi Akamine, Soichi Mizuguchi, Michiko Torio, Yoshitomo Motomura, Yuichiro Hirata, Yoshito Ishizaki, Masafumi Sanefuji, Hiroyuki Torisu, Hidetoshi Takada, Yoshihiko Maehara, Shouichi Ohga
Paroxysmal sympathetic hyperactivity (PSH) is a dysautonomic condition that is associated with various types of acquired brain injuries. Traumatic brain lesions have been documented as the leading cause of PSH. However, detailed clinical features of pediatric PSH caused by intrinsic brain lesions remain to be elusive. We present a 3-year-old boy, who had been diagnosed as having cerebral palsy, developmental delay and epilepsy after perinatal hypoxia-induced brain injury. He developed status epilepticus with fever on the third day of respiratory infection...
April 13, 2017: Brain & Development
https://www.readbyqxmd.com/read/28412320/glibenclamide-ameliorates-cerebral-edema-and-improves-outcomes-in-a-rat-model-of-status-epilepticus
#16
Zhenzhou Lin, Hua Huang, Yong Gu, Kaibin Huang, Yafang Hu, Zhong Ji, Yongming Wu, Shengnan Wang, Tingting Yang, Suyue Pan
Glibenclamide (GBC), a sulfonylurea receptor 1 blocker, emerges recently as a promising neuron protectant in various neurological disorders. This study aimed to determine whether GBC improves survival and neurological outcome of status epilepticus (SE). Male Sprague-Dawley rats successfully undergoing SE for 2.5 h (n = 134) were randomly assigned to GBC or vehicle group. Rats in the GBC group received a loading dose of 10 μg/kg of GBC, followed by 1.2 μg/6 h for 3 days, while same dose of vehicle was used as control...
April 12, 2017: Neuropharmacology
https://www.readbyqxmd.com/read/28410463/vegf-treatment-during-status-epilepticus-attenuates-long-term-seizure-associated-alterations-in-astrocyte-morphology
#17
Janice R Lenzer-Fanara, Thomas Li, Elisa A Salerni, Firmause Payen, Susan D Croll
Vascular endothelial growth factor (VEGF) treatment during pilocarpine-induced status epilepticus (SE) causes sustained preservation of behavioral function in rats in the absence of enduring neuroprotection (Nicoletti et al., 2010), suggesting the possibility that other cells or mechanisms could be involved in the beneficial effects of VEGF during SE. Astrocytes have been reported to contribute to epileptiform discharges in the hippocampus (Tian et al., 2005; Kang et al., 1998) and to express VEGF receptors (Krum & Rosenstein, 2002)...
April 11, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28405182/a-standardized-protocol-for-stereotaxic-intrahippocampal-administration-of-kainic-acid-combined-with-electroencephalographic-seizure-monitoring-in-mice
#18
Pascal Bielefeld, Amanda Sierra, Juan M Encinas, Mirjana Maletic-Savatic, Anne Anderson, Carlos P Fitzsimons
Lack of scientific reproducibility is a growing concern and weak experimental practices may contribute to irreproducibility. Here, we describe an optimized and versatile protocol for stereotaxic intrahippocampal administration of Kainic Acid (KA) in mice with a C57Bl6 background. In this protocol, KA administration is combined with in vivo recording of neuronal activity with wired and wireless setups. Following our protocol, KA administration results in a robust dose-dependent induction of low-level epileptiform activity or Status Epilepticus (SE) and induces previously characterized hallmarks of seizure-associated pathology...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28402834/long-term-outcome-of-refractory-status-epilepticus-in-adults-a-retrospective-population-based-study
#19
Anne-Mari Kantanen, Matti Reinikainen, Ilkka Parviainen, Reetta Kälviäinen
PURPOSE: Refractory status epilepticus (RSE) is a neurological emergency with significant morbidity and mortality. We aimed to analyze the long-term outcome of intensive care unit (ICU)-treated RSE and super-refractory status epilepticus (SRSE) patients in a population based cohort. METHODS: A retrospective study of ICU- and anesthesia-treated RSE patients in Kuopio University Hospital's (KUH) special responsibility area hospitals in the central and eastern part of Finland from Jan...
April 2, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28400978/thymoquinone-attenuates-brain-injury-via-an-anti-oxidative-pathway-in-a-status-epilepticus-rat-model
#20
Yi-Ye Shao, Bing Li, Yong-Mei Huang, Qiong Luo, Yang-Mei Xie, Ying-Hui Chen
AIM: Status epilepticus (SE) results in the generation of reactive oxygen species (ROS), which contribute to seizure-induced brain injury. It is well known that oxidative stress plays a pivotal role in status epilepticus (SE). Thymoquinone (TQ) is a bioactive monomer extracted from black cumin (Nigella sativa) seed oil that has anti-inflammatory, anti-cancer, and antioxidant activity in various diseases. This study evaluated the protective effects of TQ on brain injury in a lithium-pilocarpine rat model of SE and investigated the underlying mechanism related to antioxidative pathway...
January 2017: Translational Neuroscience
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