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https://www.readbyqxmd.com/read/28441750/adenosine-a1-and-a2a-receptors-in-the-brain-current-research-and-their-role-in-neurodegeneration
#1
REVIEW
Jocelyn Stockwell, Elisabet Jakova, Francisco S Cayabyab
The inhibitory adenosine A1 receptor (A1R) and excitatory A2A receptor (A2AR) are predominantly expressed in the brain. Whereas the A2AR has been implicated in normal aging and enhancing neurotoxicity in multiple neurodegenerative diseases, the inhibitory A1R has traditionally been ascribed to have a neuroprotective function in various brain insults. This review provides a summary of the emerging role of prolonged A1R signaling and its potential cross-talk with A2AR in the cellular basis for increased neurotoxicity in neurodegenerative disorders...
April 23, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28429607/thalamic-hemorrhagic-stroke-in-the-term-newborn-a-specific-neonatal-syndrome-with-non-uniform-outcome
#2
Laura Merlini, Sylviane Hanquinet, Joel Fluss
BACKGROUND: Neonatal thalamic hemorrhagic stroke is related to cerebral sinus venous thrombosis and associated with neurological sequelae. Predicting factors are however lacking. METHODS: Clinical and radiological findings at onset and on follow-up of 5 neonates with thalamic hemorrhage stroke are described. RESULTS: All neonates presented with abrupt lethargy, ophistotonos, irritability and/or seizures. The thalamic hemorrhagic stroke was most often unilateral (4/5), involving the posterior/entire thalamus in 3 cases and the anterior thalamus in 2...
January 1, 2017: Journal of Child Neurology
https://www.readbyqxmd.com/read/28424599/electrophysiological-sequelae-of-hemispherotomy-in-ipsilateral-human-cortex
#3
Ammar H Hawasli, Ravi Chacko, Nicholas P Szrama, David T Bundy, Mrinal Pahwa, Chester K Yarbrough, Brian J Dlouhy, David D Limbrick, Dennis L Barbour, Matthew D Smyth, Eric C Leuthardt
Objectives: Hemispheric disconnection has been used as a treatment of medically refractory epilepsy and evolved from anatomic hemispherectomy to functional hemispherectomies to hemispherotomies. The hemispherotomy procedure involves disconnection of an entire hemisphere with limited tissue resection and is reserved for medically-refractory epilepsy due to diffuse hemispheric disease. Although it is thought to be effective by preventing seizures from spreading to the contralateral hemisphere, the electrophysiological effects of a hemispherotomy on the ipsilateral hemisphere remain poorly defined...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28416780/new-onset-epilepsy-in-the-elderly-clinical-radiological-and-electroencephalographic-features-and-treatment-responses
#4
Erum M Shariff, Fahd A AlKhamis
OBJECTIVE: To evaluate new onset epilepsy characteristics, etiology, radiological and electroencephalographic features and to document treatment response in the elderly. METHODS: This was a retrospective study carried out in King Fahd Medical City, Riyadh, Kingdom of Saudi Arabia, from 2010 to 2013. Medical records were searched to recruit patients. Hundred and nineteen patients were enrolled who fulfill the inclusion criteria. Clinical data with respect to seizure semiology, etiology, electroencephalographic findings, radiological findings, co-morbidities, and anti-epileptic drug (AED) therapy were assessed...
April 2017: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/28399897/prehospital-ambulance-stroke-test-pilot-study-of-a-novel-stroke-test
#5
Gunnar Andsberg, Magnus Esbjörnsson, Arne Olofsson, Arne Lindgren, Bo Norrving, Mia von Euler
BACKGROUND: There is a need for a prehospital stroke test that in addition to high sensitivity for stroke, also is able to communicate stroke severity similar to the National Institute of Health Stroke Scale (NIHSS). METHODS: The PreHospital Ambulance Stroke Test (PreHAST), an eight item test based on NIHSS, which scores stroke severity from 0-19 points, was designed and adapted for the ambulance services. In the pilot study the ambulance nurses used PreHAST to assess patients with suspected stroke in the prehospital setting...
April 11, 2017: Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
https://www.readbyqxmd.com/read/28392459/stroke-and-other-cerebrovascular-diseases
#6
EDITORIAL
Halina Offner, Masafumi Ihara, Wolf-Rüdiger Schäbitz, Peter T-H Wong
To achieve success in developing more effective treatments for stroke, we need a better understanding in all aspects of stroke including prevention, diagnosis, treatment, and post-stroke recovery and complications. The objective of this special issue is to bring to the readership of Neurochemistry International the latest developments and knowledge in a broad spectrum of areas of stroke research in both review and original research articles. Topics include neuroprotective diets, biomarkers used to aid clinical management, neurodegenerative as well as neuroprotective effects of the immune system, potential therapeutic targets, engineered growth factors that promote endogenous neuroregeneration, mechanisms of cerebral small vessel disease, and post stroke epilepsy...
April 6, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28380324/a-15-year-epileptogenic-period-after-perinatal-brain-injury
#7
F Pisani, E Pavlidis, C Facini, C La Morgia, C Fusco, G Cantalupo
Seizures are a frequent acute neurological event in the neonatal period. Up to 12 to 18% of all seizures in newborns are due to perinatal stroke and up to 39% of affected children can then develop epilepsy in childhood. We report the case of a young patient who presented stroke-related seizures in the neonatal period and then developed focal symptomatic epilepsy at 15 years of age, and in whom the epileptic focus was found to co-localize with the site of his ischemic brain lesion. Such a prolonged silent period before onset of remote symptomatic epilepsy has not previously been reported...
January 2017: Functional Neurology
https://www.readbyqxmd.com/read/28380003/cause-of-death-in-patients-with-poststroke-epilepsy-results-from-a-nationwide-cohort-study
#8
Julia Hansen, Signild Åsberg, Eva Kumlien, Johan Zelano
The risk of death is increased for persons with epilepsy. The literature on causes of death in epilepsy is based mainly on cohorts with epilepsy of mixed aetiologies. For clinical purposes and improved understanding of mortality in different epilepsies, more information is needed on mortality in epilepsies of specific causes. In poststroke epilepsy (PSE), seizures occur in a setting of vascular disease and high mortality rates. The extent to which epilepsy contributes to mortality in this patient group is poorly understood...
2017: PloS One
https://www.readbyqxmd.com/read/28378621/response-of-the-cerebral-vasculature-following-traumatic-brain-injury
#9
Arjang Salehi, John H Zhang, Andre Obenaus
The critical role of the vasculature and its repair in neurological disease states is beginning to emerge particularly for stroke, dementia, epilepsy, Parkinson's disease, tumors and others. However, little attention has been focused on how the cerebral vasculature responds following traumatic brain injury (TBI). TBI often results in significant injury to the vasculature in the brain with subsequent cerebral hypoperfusion, ischemia, hypoxia, hemorrhage, blood-brain barrier disruption and edema. The sequalae that follow TBI result in neurological dysfunction across a host of physiological and psychological domains...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28374233/neurological-deficits-in-obstructive-sleep-apnea
#10
REVIEW
Luigi Ferini-Strambi, Giulia Elisabetta Lombardi, Sara Marelli, Andrea Galbiati
Obstructive sleep apnea (OSA) is the most common sleep-related breathing disorder characterized by repetitive episodes of complete or partial obstruction of the upper airway. The prevalence of this disorder is strictly dependent on its gravity. At ≥15 events/h apnea-hypopnea index (AHI), it ranges from 6 to 17% in the general population, with higher rates in men and increasing with age. The hypoxia induced by OSA severely affects the structure and function of blood vessels, culminating in mortality and morbidity...
April 2017: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/28373797/refractory-lesional-parietal-lobe-epilepsy-clinical-electroencephalographic-and-neurodiagnostic-findings
#11
Oğuzhan Kurşun, Hülya Karataş, Neşe Dericioğlu, Serap Saygi
INTRODUCTION: Specialized centers, in the management and surgical treatment of medically refractory epilepsy, emphasize the importance of differentiating the varieties of localization related epilepsies. There has been considerable recent interest in temporal and frontal lobe epileptic syndromes and less attention has been paid to parietal and occipital lobe epilepsies. METHODS: Here we report the clinical, electroencephalographic and neuroimaging characteristics of 46 patients with medically refractory lesional parietal lobe epilepsy who have been followed up for 1-10 years...
September 2016: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28364691/incidence-of-seizures-following-initial-ischemic-stroke-in-a-community-based-cohort-the-framingham-heart-study
#12
Maria Stefanidou, Rohit R Das, Alexa S Beiser, Banu Sundar, Margaret Kelly-Hayes, Carlos S Kase, Orrin Devinsky, Sudha Seshadri, Daniel Friedman
PURPOSE: We examined the incidence of seizures following ischemic stroke in a community-based sample. METHODS: All subjects with incident ischemic strokes in the Framingham Original and Offspring cohorts between 1982 and 2003 were identified and followed for up to 20 years to determine incidence of seizures. Seizure-type was based on the 2010 International League Against Epilepsy (ILAE) classification. Disability was stratified into mild/none, moderate and severe, based on post-stroke neurological deficit documentation according to the Framingham Heart Study (FHS) protocol and functional status was determined using the Barthel Index...
April 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28359069/high-risk-of-seizures-and-epilepsy-after-decompressive-hemicraniectomy-for-malignant-middle-cerebral-artery-stroke%C3%A2
#13
Rosane Brondani, Andrea Garcia de Almeida, Pedro Abrahim Cherubini, Suelen Mandelli Mota, Luiz Carlos de Alencastro, Apio Cláudio Martins Antunes, Marino Bianchin Muxfeldt
BACKGROUND: Decompressive hemicraniectomy (DHC) is a life-saving procedure for treatment of large malignant middle cerebral artery (MCA) strokes. Post-stroke epilepsy is an additional burden for these patients, but its incidence and the risk factors for its development have been poorly investigated. OBJECTIVE: To report the prevalence and risk factors for post-stroke seizures and post-stroke epilepsy after DHC for treatment of large malignant MCA strokes in a cohort of 36 patients...
March 30, 2017: Cerebrovascular Diseases Extra
https://www.readbyqxmd.com/read/28356241/virtual-reality-for-management-of-pain-in-hospitalized-patients-results-of-a-controlled-trial
#14
Vartan C Tashjian, Sasan Mosadeghi, Amber R Howard, Mayra Lopez, Taylor Dupuy, Mark Reid, Bibiana Martinez, Shahzad Ahmed, Francis Dailey, Karen Robbins, Bradley Rosen, Garth Fuller, Itai Danovitch, Waguih IsHak, Brennan Spiegel
BACKGROUND: Improvements in software and design and reduction in cost have made virtual reality (VR) a practical tool for immersive, three-dimensional (3D), multisensory experiences that distract patients from painful stimuli. OBJECTIVE: The objective of the study was to measure the impact of a onetime 3D VR intervention versus a two-dimensional (2D) distraction video for pain in hospitalized patients. METHODS: We conducted a comparative cohort study in a large, urban teaching hospital in medical inpatients with an average pain score of ≥3/10 from any cause...
March 29, 2017: JMIR Mental Health
https://www.readbyqxmd.com/read/28336156/pediatric-arterial-ischemic-stroke-epidemiology-risk-factors-and-management
#15
Ryan J Felling, Lisa R Sun, Emily C Maxwell, Neil Goldenberg, Timothy Bernard
Pediatric arterial ischemic stroke (AIS) is an uncommon but important cause of neurologic morbidity in neonates and children, with consequences including hemiparesis, intellectual disabilities, and epilepsy. The causes of pediatric AIS are unique to those typically associated with stroke in adults. Familiarity with the risk factors for AIS in children will help with efficient diagnosis, which is unfortunately frequently delayed. Here we review the epidemiology and risk factors for AIS in neonates and children...
March 7, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28330876/electrocorticographic-dynamics-as-a-novel-biomarker-in-five-models-of-epileptogenesis
#16
Dan Z Milikovsky, Itai Weissberg, Lyna Solomon-Kamintsky, Kristina Lippmann, Osnat Schefenbauer, Federica Frigerio, Massimo Rizzi, Liron Sheintuch, Daniel Zelig, Jonathan Ofer, Annamaria Vezzani, Alon Friedman
Post injury epilepsy (PIE) is a devastating sequela of various brain insults. While recent studies offer novel insights into the mechanisms underlying epileptogenesis and discover potential preventive treatments, the lack of PIE biomarkers hinders the clinical implementation of such treatments. Here we explored the biomarker potential of different electrographic features in five models of PIE. Electrocorticographic or intrahippocampal recordings of epileptogenesis (from the insult to the first spontaneous seizure) from two laboratories were analyzed in 3 mouse and 2 rat PIE models...
March 22, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28315370/control-of-mitochondrial-physiology-and-cell-death-by-the-bcl-2-family-proteins-bax-and-bok
#17
Beatrice D'Orsi, Julia Mateyka, Jochen H M Prehn
Neuronal cell death is often triggered by events that involve intracellular increases in Ca(2+). Under resting conditions, the intracellular Ca(2+) concentration is tightly controlled by a number of extrusion and sequestering mechanisms involving the plasma membrane, mitochondria, and ER. These mechanisms act to prevent a disruption of neuronal ion homeostasis. As these processes require ATP, excessive Ca(2+) overloading may cause energy depletion, mitochondrial dysfunction, and may eventually lead to Ca(2+)-dependent cell death...
March 15, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28303498/validation-of-a-preclinical-drug-screening-platform-for-pharmacoresistant-epilepsy
#18
Melissa L Barker-Haliski, Kristina Johnson, Peggy Billingsley, Jennifer Huff, Laura J Handy, Rizvana Khaleel, Zhenmei Lu, Matthew J Mau, Timothy H Pruess, Carlos Rueda, Gerald Saunders, Tristan K Underwood, Fabiola Vanegas, Misty D Smith, Peter J West, Karen S Wilcox
The successful identification of promising investigational therapies for the treatment of epilepsy can be credited to the use of numerous animal models of seizure and epilepsy for over 80 years. In this time, the maximal electroshock test in mice and rats, the subcutaneous pentylenetetrazol test in mice and rats, and more recently the 6 Hz assay in mice, have been utilized as primary models of electrically or chemically-evoked seizures in neurologically intact rodents. In addition, rodent kindling models, in which chronic network hyperexcitability has developed, have been used to identify new agents...
March 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28281491/status-epilepticus-refractory-and-super-refractory
#19
REVIEW
Deepanshu Dubey, Jayantee Kalita, Usha K Misra
Status epilepticus (SE) is an important neurological emergency. It is defined as seizures lasting for 5 minutes or more or recurrent seizures without recovery of consciousness to baseline between the attacks. Refractory SE (RSE) is defined as SE persisting despite sufficient dose of benzodiazepines and at least one antiepileptic drug (AED), irrespective of time. Super refractory SE (SRSE) is defined as SE that continues for 24 hours or more after the use of anesthetic therapy, including cases that recur on weaning of the anesthestic agent...
2017: Neurology India
https://www.readbyqxmd.com/read/28277939/potassium-channel-expression-and-function-in-microglia-plasticity-and-possible-species-variations
#20
Hai M Nguyen, Linda V Blomster, Palle Christophersen, Heike Wulff
Potassium channels play important roles in microglia functions and thus constitute potential targets for the treatment of neurodegenerative diseases like Alzheimer, Parkinson and stroke. However, uncertainty still prevails as to which potassium channels are expressed and at what levels in different species, how the expression pattern changes upon activation with M1 or M2 polarizing stimuli compared with more complex exposure paradigms, and - most importantly - how these findings relate to the in vivo situation...
March 1, 2017: Channels
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