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Levetiracetam

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https://www.readbyqxmd.com/read/28542801/serum-protein-binding-of-25-antiepileptic-drugs-in-a-routine-clinical-setting-a-comparison-of-free-non-protein-bound-concentrations
#1
Philip N Patsalos, Miguel Zugman, Charlotte Lake, Anthony James, Neville Ratnaraj, Josemir W Sander
OBJECTIVE: Given that only the free non-protein-bound concentration of an antiepileptic drug (AED) crosses the blood-brain barrier, entering the brain and producing an antiepileptic effect, knowledge and measurement of the free drug fraction is important. Such data are sparse, particularly for newer AEDs, and have arisen from the use of disparate methodologies and settings over the past six decades. We report on the protein binding of 25 AEDs that are available for clinical use, along with two pharmacologically active metabolites (carbamazepine-epoxide and N-desmethyl clobazam), using standardized methodology and under set conditions...
May 24, 2017: Epilepsia
https://www.readbyqxmd.com/read/28528211/intravenous-levetiracetam-vs-phenytoin-for-status-epilepticus-and-cluster-seizures-a-prospective-randomized-study
#2
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...
May 4, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28527204/levetiracetam-alters-oscillatory-connectivity-in-alzheimer-s-disease
#3
Christian S Musaeus, Mouhsin M Shafi, Emiliano Santarnecchi, Susan T Herman, Daniel Z Press
Seizures occur at a higher frequency in people with Alzheimer's disease (AD) but overt, clinically obvious events are infrequent. Evidence from animal models and studies in mild cognitive impairment suggest that subclinical epileptic discharges may play a role in the clinical and pathophysiological manifestations of AD. In this feasibility study, the neurophysiological and cognitive effects of acute administration of levetiracetam (LEV) are measured in patients with mild AD to test whether it could have a therapeutic benefit...
May 17, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28524224/-epileptic-encephalopathies-in-infancy-how-do-we-treat-them-does-the-aetiology-influence-the-response-to-treatment
#4
S Roldan
INTRODUCTION: Resistance to treatments is a common feature of Ohtahara, Aicardi, West and Dravet syndromes, as well as malignant migrating epilepsy in infancy. AIMS: To update the therapeutic management and to analyse whether the aetiology somehow determines the treatment. DEVELOPMENT: Convulsive seizures in the first year of life may be due to a potentially treatable aetiology, which makes it essential to carry out a complete evaluation so as to be able to begin, as early as possible, the most suitable and the non-specific symptomatic treatments to control the seizures, which prevents or minimises their deleterious effects...
May 17, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28521116/efficacy-of-anticonvulsant-substances-in-the-6hz-seizure-test-comparison-of-two-rodent-species
#5
Elise Esneault, Guillaume Peyon, Vincent Castagné
Usually performed in the mouse, the 6Hz seizure test is used for screening potential new anticonvulsant substances against complex partial seizures. Nevertheless, advanced models of temporal lobe epilepsy (TLE) are more often performed in rats, so that possible species-related differences may complicate the development of anticonvulsant substances. The aim of the present study was to evaluate the feasibility of adapting the 6Hz test in the rat. We first compared the effects of increasing current intensities for inducing seizures in the mouse and in the rat...
May 10, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28514890/spatial-recognition-test-a-novel-cognition-task-for-assessing-topographical-memory-in-mice
#6
Enes Havolli, Mark Dw Hill, Annie Godley, Pascal Jd Goetghebeur
Dysfunction in topographical memory is a core feature of several neurological disorders. There is a large unmet medical need to address learning and memory deficits as a whole in central nervous system disease. There are considerable efforts to identify pro-cognitive compounds but current methods are either lengthy or labour intensive. Our test used a two chamber apparatus and is based on the preference of rodents to explore novel environments. It was used firstly to assess topographical memory in mice at different retention intervals (RI) and secondly to investigate the effect of three drugs reported to be beneficial for cognitive decline associated with Alzheimer's disease, namely: donepezil, memantine and levetiracetam...
May 1, 2017: Journal of Psychopharmacology
https://www.readbyqxmd.com/read/28508174/preclinical-comparison-of-mechanistically-different-antiseizure-antinociceptive-and-or-antidepressant-drugs-in-a-battery-of-rodent-models-of-nociceptive-and-neuropathic-pain
#7
Misty D Smith, Jose H Woodhead, Laura J Handy, Timothy H Pruess, Fabiola Vanegas, Erin Grussendorf, Joel Grussendorf, Karen White, Karolina K Bulaj, Reisa K Krumin, Megan Hunt, Karen S Wilcox
The series of experiments herein evaluated prototype drugs representing different mechanisms of antiseizure, antinociceptive or antidepressant action in a battery of preclinical pain models in adult male CF#1 mice (formalin, writhing, and tail flick) and Sprague Dawley rats partial sciatic nerve ligation (PSNL). In the formalin assay, phenytoin (PHT, 6 mg/kg), sodium valproate (VPA, 300 mg/kg), amitriptyline (AMI, 7.5 and 15 mg/kg), gabapentin (GBP, 30 and 70 mg/kg), tiagabine (TGB, 5 and 15 mg/kg), and acetominophen (APAP, 250 and 500 mg/kg) reduced both phases of the formalin response to ≤ 25% of vehicle-treated mice...
May 15, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28506334/-mecp2-duplication-syndrome-a-clinical-analysis-of-three-cases-and-literature-review
#8
Dan-Xia Tang, Dong-Fang Li, Ruo-Hao Wu, Li-Na Zhang, Xiang-Yang Luo
MECP2 duplication syndrome (MDS) is a rare pediatric disease and mainly manifests as delayed motor development, language loss or delay, recurrent infection, severe intellectual disability, epilepsy, autistic symptoms, and early infantile hypotonia. In this article, the three children with this disease were all boys. Cases 1 and 2 had delayed motor development, and language loss or delay as initial manifestations, and case 3 had recurrent infection as initial manifestation. Physical examination showed hypotonia and negative pathological signs in each case...
May 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28503770/disposition-of-levetiracetam-in-healthy-adult-horses
#9
F B Cesar, A J Stewart, D M Boothe, W R Ravis, S H Duran, A A Wooldridge
Nine horses received 20 mg/kg of intravenous (LEVIV ); 30 mg/kg of intragastric, crushed immediate release (LEVCIR ); and 30 mg/kg of intragastric, crushed extended release (LEVCER ) levetiracetam, in a three-way randomized crossover design. Crushed tablets were dissolved in water and administered by nasogastric tube. Serum samples were collected over 48 hr, and levetiracetam concentrations were determined by immunoassay. Mean ± SD peak concentrations for LEVCIR and LEVCER were 50.72 ± 10.60 and 53...
May 15, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28492297/recent-anti-seizure-medications-in-the-intensive-care-unit
#10
Cindy Orinx, Benjamin Legros, Nicolas Gaspard
BACKGROUND: Seizures and status epilepticus (SE), both clinical and subclinical, are frequent in critically ill patients. The list of available anti-seizure medications (ASMs) is expanding and now includes older and widely used drugs as well as more recent medications with a better safety and pharmacokinetics profile. METHODS: We review a selection of recent publications about the indications and administration of ASMs in critical care for the prophylaxis and treatment of seizures and SE, focusing on recent ASMs available as intravenous formulation and emphasizing pharmacokinetics and safety issues in relation to several aspects of critical illness...
May 11, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28490999/levetiracetam-in-men-with-epilepsy-testosterone-is-left-alone-but-sperm-count-is-paramount
#11
COMMENT
David Spencer
No abstract text is available yet for this article.
March 2017: Epilepsy Currents
https://www.readbyqxmd.com/read/28490049/comparison-of-plasma-saliva-and-hair-levetiracetam-concentrations
#12
Katarzyna Karaś-Ruszczyk, Julita Kuczyńska, Halina Sienkiewicz-Jarosz, Iwona Kurkowska-Jastrzębska, Przemyslaw Bienkowski, Magdalena Restel, Jerzy Samochowiec, Pawel Mierzejewski
BACKGROUND: Previous findings revealed high correlations between serum/plasma and saliva levetiracetam concentrations, indicating saliva as an alternative matrix for monitoring levetiracetam therapy. Levetiracetam concentration in the hair, which could reflect long-term drug exposure and patients' compliance, has not been systematically tested, as yet. The aim of this study was to determine the correlation between plasma, saliva, and hair levetiracetam concentrations in 47 patients with epilepsy...
June 2017: Therapeutic Drug Monitoring
https://www.readbyqxmd.com/read/28482206/sensitive-inexpensive-spectrophotometric-and-spectrofluorimetric-analysis-of-ezogabine-levetiracetam-and-topiramate-in-tablet-formulations-using-hantzsch-condensation-reaction
#13
F A Ibrahim, A F El-Yazbi, M M Wagih, M A Barary
Two highly sensitive, simple and selective spectrophotometric and spectrofluorimetric assays have been investigated for the analysis of ezogabine, levetiracetam and topiramate in their pure and in pharmaceutical dosage forms. The suggested methods depend on the condensation of the primary amino-groups in the three drugs with acetylacetone and formaldehyde according to Hantzsch reaction yielding highly fluorescent yellow colored dihydropyridine derivatives. The reaction products of ezogabine, levetiracetam and topiramate were measured spectrophotometrically at 418, 390 and 380nm or spectrofluorimetrically at λem/ex of 495/425nm, 490/415nm and 488/410nm, respectively...
April 27, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28481729/anticonvulsant-drugs-for-generalized-tonic-clonic-epilepsy
#14
Giangennaro Coppola, Alessandra Piccorossi, Francesca Felicia Operto, Alberto Verrotti
Primary generalized tonic clonic seizures (pGTCS) are still linked to major concerns for the clinic and hazards for patients suffering from idiopathic generalized epilepsy (IGE), so a quick search of the most effective and appropriate therapy is needed to control them. The key criteria for proper treatment are syndromic diagnosis and distinction between newly diagnosed and refractory patients. Other criteria include age, gender and comorbidities. Areas covered: Treatment for pGTCS has expanded in the last two years, with new antiepileptic drugs like perampanel joining valproic acid, lamotrigine, levetiracetam, topiramate, while further evidence-based data are required for zonisamide and lacosamide...
June 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28481700/pediatric-status-epilepticus-improved-management-with-new-drug-therapies
#15
Alberto Verrotti, Michela Ambrosi, Piero Pavone, Pasquale Striano
Status Epilepticus (SE) is the most common neurological emergency of childhood. It requires prompt administration of appropriately selected anti-seizure medications. Areas covered: Following a distinction between estabilished and emergent drugs, we present pharmacological treatment options and their clinical utility in children, with a short mention on alternatives to drug treatment. We also propose an algorithm for the management of pediatric SE. For this review a Pubmed, Medline and Embase search was performed...
June 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28480518/postmarketing-experience-with-brivaracetam-in-the-treatment-of-epilepsies-a-multicenter-cohort-study-from-germany
#16
Isabel Steinig, Felix von Podewils, Gabriel Möddel, Sebastian Bauer, Karl Martin Klein, Esther Paule, Philipp S Reif, Laurent M Willems, Johann Philipp Zöllner, Rhina Kunz, Uwe Runge, Gerhard Kurlemann, Susanne Schubert-Bast, Felix Rosenow, Adam Strzelczyk
OBJECTIVE: To evaluate factors predicting efficacy, retention, and tolerability of add-on brivaracetam (BRV) in clinical practice. METHODS: A multicenter, retrospective cohort study recruiting all patients who started BRV between February and November 2016 with observation time between 3 and 12 months. RESULTS: Of a total of 262 patients (mean age 40, range 5-81 years, 129 male) treated with BRV, 227 (87%) were diagnosed to have focal, 19 (7%) idiopathic generalized and 8 (3%) symptomatic generalized epilepsy, whereas 8 (3%) were unclassified...
May 8, 2017: Epilepsia
https://www.readbyqxmd.com/read/28479797/lennox-gastaut-syndrome-a-prospective-follow-up-study
#17
Bhanu Pratap Rathaur, Ravindra Kumar Garg, Hardeep Singh Malhotra, Neeraj Kumar, Praveen Kumar Sharma, Rajesh Verma, Ravi Uniyal
OBJECTIVES: Lennox-Gastaut syndrome is a catastrophic epileptic encephalopathy. In Lennox-Gastaut syndrome, seizures are resistant to pharmacological treatment. In this prospective study, we evaluated the clinical features, neuroimaging, and response to treatment. MATERIALS AND METHODS: Forty-three consecutive newly diagnosed patients of Lennox-Gastaut syndrome were enrolled in the study. Baseline clinical assessment included seizure semiology, seizure frequency, electroencephalography, and neuroimaging...
April 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28472982/comparative-safety-of-anti-epileptic-drugs-during-pregnancy-a-systematic-review-and-network-meta-analysis-of-congenital-malformations-and-prenatal-outcomes
#18
Areti Angeliki Veroniki, Elise Cogo, Patricia Rios, Sharon E Straus, Yaron Finkelstein, Ryan Kealey, Emily Reynen, Charlene Soobiah, Kednapa Thavorn, Brian Hutton, Brenda R Hemmelgarn, Fatemeh Yazdi, Jennifer D'Souza, Heather MacDonald, Andrea C Tricco
BACKGROUND: Pregnant women with epilepsy frequently experience seizures related to pregnancy complications and are often prescribed anti-epileptic drugs (AEDs) to manage their symptoms. However, less is known about the comparative safety of AED exposure in utero. We aimed to compare the risk of congenital malformations (CMs) and prenatal outcomes of AEDs in infants/children who were exposed to AEDs in utero through a systematic review and Bayesian random-effects network meta-analysis...
May 5, 2017: BMC Medicine
https://www.readbyqxmd.com/read/28468867/medication-errors-by-caregivers-at-home-in-neonates-discharged-from-the-neonatal-intensive-care-unit
#19
Ritanshu Solanki, Nivedita Mondal, Thulasingam Mahalakshmy, Vishnu Bhat
OBJECTIVE: To determine the frequency of medication errors by caregivers at home in neonates discharged from the neonatal intensive care unit and to identify the associated risk factors. METHODS: A descriptive, cross-sectional study was conducted in the High Risk Newborn Follow-up Clinic of our institute, on a sample of 166 children, <3 months old. The medications prescribed (syrup preparations of vitamin D, multivitamins, calcium, iron and levetiracetam, tablet L-thyroxine and ursodeoxycholic acid and human milk fortifier powder) were noted from the discharge summary...
May 3, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28460320/the-efficacy-of-different-kinds-of-intravenously-applied-antiepileptic-drugs-in-the-treatment-of-status-epilepticus-how-can-it-be-determined
#20
Juliane Redecker, Matthias Wittstock, Johannes Rösche
We explored the influence of four different efficacy criteria on the results of observational studies concerning the treatment of status epilepticus (SE) and its subtypes. We compared and contrasted the results of four different efficacy criteria for the effectiveness of phenytoin, valproate, levetiracetam, and lacosamide. Criterion 1=the last antiepileptic drug (AED) administered before SE termination. Criterion 2=the last drug introduced into the antiepileptic therapy within 72h before the cessation of SE and without changes in dosage or number of the co-medication...
April 28, 2017: Epilepsy & Behavior: E&B
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