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https://www.readbyqxmd.com/read/28822872/different-mossy-fiber-sprouting-patterns-in-ilae-hippocampal-sclerosis-types
#1
Barbara Schmeiser, Jinmei Li, Armin Brandt, Josef Zentner, Soroush Doostkam, Thomas M Freiman
OBJECTIVE: Hippocampal sclerosis (HS) is the most prevalent pathology in temporal lobe epilepsy (TLE) characterized by segmental neuronal cell loss in the cornu ammonis (CA) 1-4. In addition, migration of granule cells and reorganization of their axons is observed, known as granule cell dispersion (GCD) and mossy fiber sprouting (MFS). The loss of mossy fibers` (MF) target cells in CA4 and CA3 was considered to be causative for MFS. The ILAE HS (International League Against Epilepsy) classification identifies three subtypes with different cell loss patterns in CA1-4...
August 8, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28822839/decreased-surface-expression-of-the-%C3%AE-subunit-of-the-gabaa-receptor-contributes-to-reduced-tonic-inhibition-in-dentate-granule-cells-in-a-mouse-model-of-fragile-x-syndrome
#2
Nianhui Zhang, Zechun Peng, Xiaoping Tong, A Kerstin Lindemeyer, Yliana Cetina, Christine S Huang, Richard W Olsen, Thomas S Otis, Carolyn R Houser
While numerous changes in the GABA system have been identified in models of Fragile X Syndrome (FXS), alterations in subunits of the GABAA receptors (GABAARs) that mediate tonic inhibition are particularly intriguing. Considering the key role of tonic inhibition in controlling neuronal excitability, reduced tonic inhibition could contribute to FXS-associated disorders such as hyperactivity, hypersensitivity, and increased seizure susceptibility. The current study has focused on the expression and function of the δ subunit of the GABAAR, a major subunit involved in tonic inhibition, in granule cells of the dentate gyrus in the Fmr1 knockout (KO) mouse model of FXS...
August 16, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28822838/scavenging-reactive-oxygen-species-inhibits-status-epilepticus-induced-neuroinflammation
#3
Pallavi B McElroy, Li-Ping Liang, Brian J Day, Manisha Patel
Inflammation has been identified as an important mediator of seizures and epileptogenesis. Understanding the mechanisms underlying seizure-induced neuroinflammation could lead to the development of novel therapies for the epilepsies. Reactive oxygen species (ROS) are recognized as mediators of seizure-induced neuronal damage and are known to increase in models of epilepsies. ROS are also known to contribute to inflammation in several disease states. We hypothesized that ROS are key modulators of neuroinflammation i...
August 16, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28822691/fatal-meningitis-in-swine-after-intrathecal-administration-of-adeno-associated-virus-expressing-syngeneic-interleukin-10
#4
Mark D Unger, Josef Pleticha, James E Collins, Anibal G Armien, Jennifer L Brazzell, Laura K Newman, Lukas F Heilmann, Jodi A Scholz, Timothy P Maus, Andreas S Beutler
Interleukin-10 (IL-10) delivered by intrathecal (i.t.) gene vectors is a candidate investigational new drug (IND) for several chronic neurological disorders such as neuropathic pain. We performed a preclinical safety study of IL-10. A syngeneic large animal model was used delivering porcine IL-10 (pIL-10) to the i.t. space in swine by adeno-associated virus serotype 8 (AAV8), a gene vector that was previously found to be nontoxic in the i.t. space. Unexpectedly, animals became ill, developing ataxia, seizures, and an inability to feed and drink, and required euthanasia...
August 1, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28822321/neurostimulation-techniques-in-the-treatment-of-cocaine-dependence-a-review-of-the-literature
#5
REVIEW
Fady Rachid
OBJECTIVE: Cocaine use disorder is a very common condition that represents a substantial public health problem, and no effective pharmacological or psychological therapies have been identified to date. Urgent therapeutic alternatives are therefore needed such as neurostimulation techniques. The purpose of this review is to describe and discuss studies that have evaluated the safety and efficacy of these techniques for the treatment of cocaine dependence. METHODS: The electronic literature on repetitive transcranial magnetic stimulation, theta-burst stimulation, deep transcranial magnetic stimulation, transcranial direct current stimulation, magnetic seizure therapy, electroconvulsive therapy, cranial electro-stimulation, and deep brain stimulation in the treatment of cocaine addiction were reviewed...
August 10, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28822307/efficacy-of-a-third-or-later-antiepileptic-drug-regimen-according-to-epilepsy-syndrome-among-adult-patients
#6
Go Ito, Akihisa Okumura, Kousuke Kanemoto
OBJECTIVE: To evaluate the efficacy of third or later antiepileptic drug (AED) regimens in adult patients with epilepsy according to epilepsy syndrome. METHODS: The time courses of AEDs and their efficacy were evaluated in 449 adults with temporal lobe epilepsy (TLE, n=153), juvenile myoclonic epilepsy (JME, n=33), or extratemporal focal epilepsy (FE, n=263) based mainly on clinical symptoms and EEG findings. Any change in AEDs after their initiation demarcated the end of one regimen, whereas changes in dose did not...
August 3, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28821666/gabaergic-interneuron-differentiation-in-the-basal-forebrain-is-mediated-through-direct-regulation-of-glutamic-acid-decarboxylase-isoforms-by-dlx-homeobox-transcription-factors
#7
Trung N Le, Qing-Ping Zhou, Inma Cobos, Shunzhen Zhang, Jamie Zagozewski, Sara Japoni, Jerry Vriend, Tracie Parkinson, Guoyan Du, John L Rubenstein, David D Eisenstat
γ-amino butyric acid (GABA) is the key inhibitory neurotransmitter in the cortex but regulation of its synthesis during forebrain development is poorly understood. In the telencephalon, members of the distal-less (Dlx) homeobox gene family are expressed in, and regulate the development of, the basal ganglia primodia from which many GABAergic neurons originate and migrate to other forebrain regions. The Dlx1/Dlx2 double knockout mice die at birth with abnormal cortical development, including loss of tangential migration of GABAergic inhibitory interneurons to the neocortex (Anderson et al...
August 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821613/the-rir-motif-in-the-scaffold-protein-xrcc1-mediates-a-low-affinity-interaction-with-polynucleotide-kinase-phosphatase-pnkp-during-dna-single-strand-break-repair
#8
Claire Breslin, Rajam S Mani, Mesfin Fanta, Nicolas Hoch, Michael Weinfeld, Keith W Caldecott
The scaffold protein X-ray repair cross-complementing 1 (XRCC1) interacts with multiple enzymes involved in DNA base excision repair and single-strand break repair (SSBR) and is important for genetic integrity and normal neurological function. One of the most important interactions of XRCC1 is that with polynucleotide kinase/phosphatase (PNKP), a dual-function DNA kinase/phosphatase that processes damaged DNA termini and that, if mutated, results in ataxia with oculomotor apraxia 4 (AOA4) and microcephaly with early-onset seizures and developmental delay (MCSZ)...
August 16, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28821005/anticonvulsant-effect-of-cannabidiol-in-the-pentylenetetrazole-model-pharmacological-mechanisms-electroencephalographic-profile-and-brain-cytokine-levels
#9
Luciano R Vilela, Isabel V Lima, Érica B Kunsch, Hyorrana Priscila P Pinto, Aline S de Miranda, Érica Leandro M Vieira, Antônio Carlos P de Oliveira, Marcio Flávio D Moraes, Antônio L Teixeira, Fabricio A Moreira
Cannabidiol (CBD), the main nonpsychotomimetic compound from Cannabis sativa, inhibits experimental seizures in animal models and alleviates certain types of intractable epilepsies in patients. Its pharmacological profile, however, is still uncertain. Here we tested the hypothesis that CBD anticonvulsant mechanisms are prevented by cannabinoid (CB1 and CB2) and vanilloid (TRPV1) receptor blockers. We also investigated its effects on electroencephalographic (EEG) activity and hippocampal cytokines in the pentylenetetrazole (PTZ) model...
August 15, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28820719/central-nervous-system-infection-associated-with-orientia-tsutsugamushi-in-south-korea
#10
Han Sang Lee, Jun-Sang Sunwoo, Seon-Jae Ahn, Jangsup Moon, Jung-Ah Lim, Jin-Sun Jun, Woo-Jin Lee, Soon-Tae Lee, Keun-Hwa Jung, Kyung-Il Park, Ki-Young Jung, Sang Kun Lee, Kon Chu
Orientia tsutsugamushi is a major cause of vector-borne infection in Asia. Prompt recognition and appropriate treatment are crucial because of its potentially fatal complications and lack of response to beta-lactam antibiotics. The present study retrospectively evaluated the clinical characteristics and laboratory findings of 16 patients with scrub typhus-related central nervous system (CNS) infections. Single titers ≥ 1:40 of total serum antibodies against O. tsutsugamushi detected by an indirect immunofluorescent assay were considered as positive results...
July 31, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820708/clinical-spectrum-etiology-and-outcome-of-neurological-disorders-in-the-rural-hospital-of-mosango-the-democratic-republic-of-congo
#11
Deby Mukendi, Jean-Roger Lilo Kalo, Alain Mpanya, Luigi Minikulu, Tharcisse Kayembe, Pascal Lutumba, Barbara Barbé, Philippe Gillet, Jan Jacobs, Harry Van Loen, Cedric P Yansouni, François Chappuis, Raffaella Ravinetto, Kristien Verdonck, Marleen Boelaert, Andrea S Winkler, Emmanuel Bottieau
There is little published information on the epidemiology of neurological disorders in rural Central Africa, although the burden is considered to be substantial. This study aimed to investigate the pattern, etiology, and outcome of neurological disorders in children > 5 years and adults admitted to the rural hospital of Mosango, province of Kwilu, Democratic Republic of Congo, with a focus on severe and treatable infections of the central nervous system (CNS). From September 2012 to January 2015, 351 consecutive patients hospitalized for recent and/or ongoing neurological disorder were prospectively evaluated by a neurologist, subjected to a set of reference diagnostic tests in blood or cerebrospinal fluid, and followed-up for 3-6 months after discharge...
August 14, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28819935/plasma-biomarkers-of-inflammation-reflect-seizures-and-hemorrhagic-activity-of-cerebral-cavernous-malformations
#12
Romuald Girard, Hussein A Zeineddine, Maged D Fam, Anoop Mayampurath, Ying Cao, Changbin Shi, Robert Shenkar, Sean P Polster, Michael Jesselson, Ryan Duggan, Abdul-Ghani Mikati, Gregory Christoforidis, Jorge Andrade, Kevin J Whitehead, Dean Y Li, Issam A Awad
The clinical course of cerebral cavernous malformations (CCMs) is highly variable. Based on recent discoveries implicating angiogenic and inflammatory mechanisms, we hypothesized that serum biomarkers might reflect chronic or acute disease activity. This single-site prospective observational cohort study included 85 CCM patients, in whom 24 a priori chosen plasma biomarkers were quantified and analyzed in relation to established clinical and imaging parameters of disease categorization and severity. We subsequently validated the positive correlations in longitudinal follow-up of 49 subjects...
August 17, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28819305/cardiorespiratory-pathogenesis-of-sickle-cell-disease-in-a-mouse-model
#13
Jun Ren, Xiuqing Ding, Marie Trudel, John J Greer, Joanna E MacLean
The nature and development of cardiorespiratory impairments associated with sickle cell disease are poorly understood. Given that the mechanisms of these impairments cannot be addressed adequately in clinical studies, we characterized cardiorespiratory pathophysiology from birth to maturity in the sickle cell disease SAD mouse model. We identified two critical phases of respiratory dysfunction in SAD mice; the first prior to weaning and the second in adulthood. At postnatal day 3, 43% of SAD mice showed marked apneas, anemia, and pulmonary vascular congestion typical of acute chest syndrome; none of these mice survived to maturity...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819097/the-non-coding-rna-bc1-regulates-experience-dependent-structural-plasticity-and-learning
#14
Victor Briz, Leonardo Restivo, Emanuela Pasciuto, Konrad Juczewski, Valentina Mercaldo, Adrian C Lo, Pieter Baatsen, Natalia V Gounko, Antonella Borreca, Tiziana Girardi, Rossella Luca, Julie Nys, Rogier B Poorthuis, Huibert D Mansvelder, Gilberto Fisone, Martine Ammassari-Teule, Lutgarde Arckens, Patrik Krieger, Rhiannon Meredith, Claudia Bagni
The brain cytoplasmic (BC1) RNA is a non-coding RNA (ncRNA) involved in neuronal translational control. Absence of BC1 is associated with altered glutamatergic transmission and maladaptive behavior. Here, we show that pyramidal neurons in the barrel cortex of BC1 knock out (KO) mice display larger excitatory postsynaptic currents and increased spontaneous activity in vivo. Furthermore, BC1 KO mice have enlarged spine heads and postsynaptic densities and increased synaptic levels of glutamate receptors and PSD-95...
August 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28819088/lissencephaly-in-a-pekingese
#15
Genya Shimbo, Michihito Tagawa, Eiji Oohashi, Masashi Yanagawa, Kazuro Miyahara
A 1-year-old neutered male Pekingese was presented for evaluation and further treatment of cluster seizures. The dog had behavioral abnormalities, and a prosencephalic lesion was suspected following neurological examination. The dog showed signs of learning difficulty. Magnetic resonance imaging of the brain revealed a remarkably smooth cerebral cortex with a reduced number of gyri, as well as a cystic lesion associated with the quadrigeminal cistern. A diagnosis of lissencephaly, concurrent with a quadrigeminal cisternal cyst, was made...
August 17, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28818843/seizures-safety-and-submersion-sense-and-sensibility
#16
EDITORIAL
Richard E Appleton
No abstract text is available yet for this article.
August 17, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28818811/brain-tumors-and-epileptic-spasms-natural-history-and-outcomes
#17
Viviana Benitez, Peter E Manley, Liliana C Goumnerova, Chellamani Harini, Nicole J Ullrich
While brain tumors are a frequent cause of seizures, they rarely cause epileptic spasms (ES). The objective of this study was to investigate features of tumor-associated ES. We conducted a retrospective review of patients with ES and a brain tumor. Demographics; pathologic, radiologic, and EEG data; treatment response; and long-term outcome were collected. Twenty four patients were identified; 11 met inclusion criteria. Epileptic spasm (ES) onset occurred prior to tumor diagnosis in seven patients (63%), and after tumor resection in 4 patients (36%)...
August 14, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28818810/evaluating-quality-of-life-in-epilepsy-the-role-of-screening-for-adverse-drug-effects-depression-and-anxiety
#18
Jean-Arthur Micoulaud-Franchi, Fabrice Bartolomei, Roderick Duncan, Aileen McGonigal
OBJECTIVE: The objective of this study was to evaluate the contribution of validated screening tools for antiepileptic drug (AED) adverse effects, depression, and anxiety to measure the quality of life (QoL) in people with epilepsy (PWE). METHODS: Patients in a tertiary epilepsy service were screened for quality of life (using QOLIE-31), major depressive disorder (MDD) (NDDI-E), generalized anxiety disorder (GAD) (GAD-7), and AED effects (AEP). Mini International Neuropsychiatric Interview (MINI) generalized anxiety disorder module was also performed...
August 14, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28818699/apathy-in-people-with-epilepsy-and-its-clinical-significance-a-case-control-study
#19
Jong-Geun Seo, Gun-Hee Lee, Sung-Pa Park
PURPOSE: Apathy as a state of decreased motivation has not been highlighted in people with epilepsy (PWE). We investigated its clinical significance in PWE. METHODS: We invited adult PWE who had been administered antiepileptic drugs (AEDs) for at least 1year and compared them with age- and gender-matched healthy controls. Eligible participants completed several questionnaires including the Apathy Evaluation Scale-Self (AES-S), the Korean version of the Neurological Disorders Depression Inventory for Epilepsy (K-NDDI-E), the Generalized Anxiety Disorder-7 (GAD-7), the Epworth Sleepiness Scale (ESS), and the Insomnia Severity Index (ISI), and the Quality of Life in Epilepsy-10 (QOLIE-10)...
August 8, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28818693/hybrid-photoacoustic-and-electrophysiological-recording-of-neurovascular-communications-in-freely-moving-rats
#20
Lei Xi, Tian Jin, Junli Zhou, Paul Carney, Hubei Jiang
Uncovering the relationships between neural activities and capillary-level hemodynamics such as blood flow and concentration of hemoglobin in the brain plays an important role in the study of animal behaviors and brain disorders. Here, we developed a miniature probe integrating a photoacoustic sensor and micro-electrodes to simultaneously record the dynamics of blood flow and total hemoglobin inside a single capillary and the activities of surrounding neurons with high spatiotemporal resolution in freely-moving rats...
August 14, 2017: NeuroImage
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