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https://www.readbyqxmd.com/read/28088802/interplay-between-cortical-spreading-depolarization-and-seizures
#1
Daniel R Kramer, Tatsuhiro Fujii, Ifije Ohiorhenuan, Charles Y Liu
Cortical spreading depolarization (CSD) is an electrophysiologic phenomenon found mostly in the setting of neurologic injury resulting in the disturbance of ion homeostasis and leading to changes in the local vascular response. The bioelectric etiology of CSD shares similarities to those in epileptic disorders, yet the relationship between seizures and CSD is unclear, with several studies observing cortical depression before, during, and after seizure activity, thus obscuring our understanding of whether CSD activity potentiates or limits seizures and vice versa...
January 14, 2017: Stereotactic and Functional Neurosurgery
https://www.readbyqxmd.com/read/28086980/inflammation-in-epileptogenesis-after-traumatic-brain-injury
#2
REVIEW
Kyria M Webster, Mujun Sun, Peter Crack, Terence J O'Brien, Sandy R Shultz, Bridgette D Semple
BACKGROUND: Epilepsy is a common and debilitating consequence of traumatic brain injury (TBI). Seizures contribute to progressive neurodegeneration and poor functional and psychosocial outcomes for TBI survivors, and epilepsy after TBI is often resistant to existing anti-epileptic drugs. The development of post-traumatic epilepsy (PTE) occurs in a complex neurobiological environment characterized by ongoing TBI-induced secondary injury processes. Neuroinflammation is an important secondary injury process, though how it contributes to epileptogenesis, and the development of chronic, spontaneous seizure activity, remains poorly understood...
January 13, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28060157/posttraumatic-seizures-in-children-with-severe-traumatic-brain-injury
#3
John Kuluz
No abstract text is available yet for this article.
January 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28059678/letter-to-the-editor-early-seizure-prophylaxis-in-pediatric-severe-traumatic-brain-injury-still-a-long-way-to-go
#4
Eduardo Mekitarian Filho
No abstract text is available yet for this article.
January 6, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28000125/prevalence-and-risk-factors-for-early-seizure-in-patients-with-traumatic-brain-injury-analysis-from-national-trauma-data-bank
#5
Shahram Majidi, Yamane Makke, Amr Ewida, Bahareh Sianati, Adnan I Qureshi, Mohamad Z Koubeissi
BACKGROUND: Traumatic brain injury (TBI) is a well-known risk factor for seizures. We aimed to identify the frequency and risk factors for seizure occurrence during hospitalization for TBI. METHODS: We used ICD-9-CM codes to identify patients 18 years of age or older from the National Trauma Data Bank who were admitted with TBI. We also used ICD-9-CM codes to identify the subset who had seizures during hospitalization. Patient demographics, comorbidities, Glasgow Coma Scale (GCS) score, Injury Severity Score Abbreviated Injury Scale (ISSAIS), in-hospital complications, and discharge disposition were compared in the seizure group (SG) and no-seizure group (NSG)...
December 20, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/27938477/effects-of-human-es-derived-neural-stem-cell-transplantation-and-kindling-in-a-rat-model-of-traumatic-brain-injury
#6
Stefania Beretta, Kelly Cunningham, Daniel Haus, Eric Gold, Harvey Perez, Luci López-Velázquez, Brian Cummings
Traumatic Brain Injury (TBI) is one of the leading causes of death and disability in the population worldwide, with a broad spectrum of symptoms and disabilities. Post-traumatic hyperexcitability is one of the most common neurological disorders that affect people after a head injury. A reliable animal model of post-traumatic hyperexcitability induced by TBI which allows one to test effective treatment strategies has yet to be developed. To address these issues, in the present study, we tested human ES-derived neural stem cell transplantation in an animal model of post-traumatic hyperexcitability in which the brain injury was produced in one hemisphere of immunodeficient athymic nude (ATN) rats by controlled cortical impact (CCI) and spontaneous seizures were produced by repeated electrical stimulation (kindling) in the contralateral hemisphere...
22, 2016: Cell Transplantation
https://www.readbyqxmd.com/read/27873234/eeg-monitoring-and-antiepileptic-drugs-in-children-with-severe-tbi
#7
Christopher M Ruzas, Peter E DeWitt, Kimberly S Bennett, Kevin E Chapman, Nicole Harlaar, Tellen D Bennett
BACKGROUND: Traumatic brain injury (TBI) causes substantial morbidity and mortality in US children. Post-traumatic seizures (PTS) occur in 11-42% of children with severe TBI and are associated with unfavorable outcome. Electroencephalographic (EEG) monitoring may be used to detect PTS and antiepileptic drugs (AEDs) may be used to treat PTS, but national rates of EEG and AED use are not known. The purpose of this study was to describe the frequency and timing of EEG and AED use in children hospitalized after severe TBI...
November 21, 2016: Neurocritical Care
https://www.readbyqxmd.com/read/27871029/effects-of-cerebrolysin-on-functional-recovery-in-patients-with-severe-disability-after-traumatic-brain-injury-a-historical-cohort-study
#8
Hosseinali Khalili, Amin Niakan, Fariborz Ghaffarpasand
OBJECTIVE: To determine the effects of cerebrolysin on functional recovery in patients with severe disability after traumatic brain injury (TBI). METHODS: This was a retrospective cohort study being performed during a 2-year period in a level I trauma center in Southern Iran including all the adult patients (>16years) with severe disability (GOS of 2 and 3) 1-month after trauma. We excluded those with posttraumatic seizures and those with meningitis or current infections...
January 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27857999/do-age-and-anticoagulants-affect-the-natural-history-of-acute-subdural-hematomas
#9
Brandon P Lucke-Wold, Ryan C Turner, Darnell Josiah, Chelsea Knotts, Sanjay Bhatia
Acute subdural hematoma is a serious complication following traumatic brain injury. Large volume hematomas or those with underlying brain injury can cause mass effect, midline shift, and eventually herniation of the brain. Acute subdural hematomas in the young are associated with high-energy trauma and often have underlying contusions, while acute subdural hematomas in the elderly are associated with minor trauma and an absence of underlying contusions, even though the elderly are more likely to be on anticoagulants or anti-platelet therapy...
2016: Archives of Emergency Medicine and Critical Care
https://www.readbyqxmd.com/read/27851188/1553-assessment-of-seizure-incidence-with-and-without-prophylaxis-in-pediatric-traumatic-brain-injury
#10
Allison Chung, Kaitlin McGinn, Rosa Vidal
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27836728/altered-gene-expression-profile-in-a-mouse-model-of-scn8a-encephalopathy
#11
Ryan S Sprissler, Jacy L Wagnon, Rosie K Bunton-Stasyshyn, Miriam H Meisler, Michael F Hammer
SCN8A encephalopathy is a severe, early-onset epilepsy disorder resulting from de novo gain-of-function mutations in the voltage-gated sodium channel Nav1.6. To identify the effects of this disorder on mRNA expression, RNA-seq was performed on brain tissue from a knock-in mouse expressing the patient mutation p.Asn1768Asp (N1768D). RNA was isolated from forebrain, cerebellum, and brainstem both before and after seizure onset, and from age-matched wildtype littermates. Altered transcript profiles were observed only in forebrain and only after seizures...
February 2017: Experimental Neurology
https://www.readbyqxmd.com/read/27749510/should-levetiracetam-or-phenytoin-be-used-for-posttraumatic-seizure-prophylaxis-a-systematic-review-of-the-literature-and-meta-analysis
#12
Nickalus R Khan, Matthew A VanLandingham, Tamara M Fierst, Caroline Hymel, Kathryn Hoes, Linton T Evans, Rory Mayer, Fred Barker, Paul Klimo
BACKGROUND: Posttraumatic seizure (PTS) is a significant complication of traumatic brain injury (TBI). OBJECTIVE: To perform a systematic review and meta-analysis to compare levetiracetam with phenytoin for seizure prophylaxis in patients diagnosed with severe TBI. METHODS: An inclusive search of several electronic databases and bibliographies was conducted to identify scientific studies that compared the effect of levetiracetam and phenytoin on PTS...
December 2016: Neurosurgery
https://www.readbyqxmd.com/read/27739577/incidence-and-risk-factors-of-posttraumatic-seizures-following-traumatic-brain-injury-a-traumatic-brain-injury-model-systems-study
#13
Anne C Ritter, Amy K Wagner, Anthony Fabio, Mary Jo Pugh, William C Walker, Jerzy P Szaflarski, Ross D Zafonte, Allen W Brown, Flora M Hammond, Tamara Bushnik, Douglas Johnson-Greene, Timothy Shea, Jason W Krellman, Joseph A Rosenthal, Laura E Dreer
OBJECTIVE: Determine incidence of posttraumatic seizure (PTS) following traumatic brain injury (TBI) among individuals with moderate-to-severe TBI requiring rehabilitation and surviving at least 5 years. METHODS: Using the prospective TBI Model Systems National Database, we calculated PTS incidence during acute hospitalization, and at years 1, 2, and 5 postinjury in a continuously followed cohort enrolled from 1989 to 2000 (n = 795). Incidence rates were stratified by risk factors, and adjusted relative risk (RR) was calculated...
December 2016: Epilepsia
https://www.readbyqxmd.com/read/27722114/predicting-outcome-in-traumatic-brain-injury-sharing-experience-of-pilot-traumatic-brain-injury-registry
#14
Ranabir Pal, Ashok Munivenkatappa, Amit Agrawal, Geetha R Menon, Sagar Galwankar, P Rama Mohan, S Satish Kumar, B V Subrahmanyam
BACKGROUND: A reliable prediction of outcome for the victims of traumatic brain injury (TBI) on admission is possible from concurrent data analysis from any systematic real-time registry. OBJECTIVE: To determine the clinical relevance of the findings from our TBI registry to develop prognostic futuristic models with readily available traditional and novel predictors. MATERIALS AND METHODS: Prospectively collected data using predesigned pro forma were analyzed from the first phase of a trauma registry from a South Indian Trauma Centre, compatible with computerized management system at electronic data entry and web data entry interface on demographics, clinical, management, and discharge status...
July 2016: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/27707084/generalized-seizures-after-experimental-traumatic-brain-injury-occur-at-the-transition-from-slow-wave-to-rapid-eye-movement-sleep
#15
Pedro Andrade, Jari Nissinen, Asla Pitkanen
Sleep disturbances commonly occur after traumatic brain injury and may predispose patients to epileptic seizures. We hypothesized that unprovoked seizure occurrence after traumatic brain injury depends on the sleep-wake cycle, and that the electrographic characteristics of a given sleep stage provide biomarkers for post-traumatic epilepsy. We show in a rat lateral fluid-percussion model that 92% of spontaneous generalized seizures occur during the transition from stage III to rapid-eye-movement sleep. Moreover, a reduction in spindle duration and dominant frequency during the transition stage present as specific and sensitive non-invasive biomarkers for experimentally induced post-traumatic epilepsy with generalized electrographic seizures...
October 5, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27688990/seizure-prophylaxis-in-patients-with-traumatic-brain-injury-a-single-center-study
#16
Shannon Inglet, Margaret Baldwin, Amie H Quinones, Sarah Majercik, Dave S Collingridge, Joel MacDonald
The use of prophylactic anticonvulsants to prevent early post-traumatic seizures (PTSs) is recommended but inconsistently employed in patients with traumatic brain injury (TBI). The authors evaluated outcomes associated with prophylaxis administration in patients with TBI at a Level 1 trauma center. All patients admitted with TBI from October 2007 through May 2012 were included. Our primary outcome was the incidence of early PTSs. Secondary outcomes included mortality, length of hospital and intensive care unit (ICU) stays, and incidence of late seizures...
August 26, 2016: Curēus
https://www.readbyqxmd.com/read/27687816/upholding-wag-rij-rats-as-a-model-of-absence-epileptogenesis-hidden-mechanisms-and-a-new-theory-on-seizure-development
#17
REVIEW
Emilio Russo, Rita Citraro, Andrew Constanti, Antonio Leo, Annika Lüttjohann, Gilles van Luijtelaar, Giovambattista De Sarro
The WAG/Rij rat model has recently gathered attention as a suitable animal model of absence epileptogenesis. This latter term has a broad definition encompassing any possible cause that determines the development of spontaneous seizures; however, most of, if not all, preclinical knowledge on epileptogenesis is confined to the study of post-brain insult models such as traumatic brain injury or post-status epilepticus models. WAG/Rij rats, but also synapsin 2 knockout, Kv7 current-deficient mice represent the first examples of genetic models where an efficacious antiepileptogenic treatment (ethosuximide) was started before seizure onset...
December 2016: Neuroscience and Biobehavioral Reviews
https://www.readbyqxmd.com/read/27670926/posttraumatic-hydrocephalus-as-a-confounding-influence-on-brain-injury-rehabilitation-incidence-clinical-characteristics-and-outcomes
#18
Alan H Weintraub, Donald J Gerber, Robert G Kowalski
OBJECTIVE: To describe incidence, clinical characteristics, complications, and outcomes in posttraumatic hydrocephalus (PTH) after traumatic brain injury (TBI) for patients treated in an inpatient rehabilitation program. DESIGN: Cohort study with retrospective comparative analysis. SETTING: Inpatient rehabilitation hospital. PARTICIPANTS: All patients admitted for TBI from 2009 to 2013 diagnosed with PTH (N=59), defined as ventriculomegaly, delayed clinical recovery discordant with injury severity, hydrocephalus symptoms, or positive lumbar puncture results...
September 23, 2016: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27637399/seizures-and-the-role-of-anticonvulsants-after-traumatic-brain-injury
#19
REVIEW
Lara L Zimmermann, Ramon Diaz-Arrastia, Paul M Vespa
Posttraumatic seizures are a common complication of traumatic brain injury. Posttraumatic epilepsy accounts for 20% of symptomatic epilepsy in the general population and 5% of all epilepsy. Early posttraumatic seizures occur in more than 20% of patients in the intensive care unit and are associated with secondary brain injury and worse patient outcomes. Most posttraumatic seizures are nonconvulsive and therefore continuous electroencephalography monitoring should be the standard of care for patients with moderate or severe brain injury...
October 2016: Neurosurgery Clinics of North America
https://www.readbyqxmd.com/read/27604735/animal-models-of-posttraumatic-seizures-and-epilepsy
#20
Alexander V Glushakov, Olena Y Glushakova, Sylvain Doré, Paul R Carney, Ronald L Hayes
Posttraumatic epilepsy (PTE) is one of the most common and devastating complications of traumatic brain injury (TBI). Currently, the etiopathology and mechanisms of PTE are poorly understood and as a result, there is no effective treatment or means to prevent it. Antiepileptic drugs remain common preventive strategies in the management of TBI to control acute posttraumatic seizures and to prevent the development of PTE, although their efficacy in the latter case is disputed. Different strategies of PTE prophylaxis have been showing promise in preclinical models, but their translation to the clinic still remains elusive due in part to the variability of these models and the fact they do not recapitulate all complex pathologies associated with human TBI...
2016: Methods in Molecular Biology
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