Abstract：
:The investigational anticonvulsant drug, gabapentin (GP; 1-(aminomethyl) cyclohexaneacetic acid) limited repetitive firing of sodium-dependent action potentials of mouse spinal cord and neocortical neurons in monolayer dissociated cell culture. The effect developed slowly over time with sustained exposure. The IC50 was 1.3 x 10(-4) M for exposure times < or = 60 s, 1.9 x 10(-5) M for 10-60 min, and 4.0 x 10(-6) M for 12-48 h. Hyperpolarization restored sustained firing in the continuing presence of GP. Blockade of action potential firing by GP was frequency (use)-dependent. After preincubation with 2.9 x 10(-5) M GP (5 micrograms/ml), trains of brief stimuli at > or = 50 Hz elicited fewer action potentials than in control solution. Also, at 150 Hz, maximal rate of rise of action potentials decreased progressively with repetitive firing in GP-containing, but not control, solution. After overnight incubation in 2.9 x 10(-5) M GP, the absolute refractory period was prolonged from 2.4 +/- 0.6 ms in control solution (n = 11) to 4.7 +/- 0.3 ms (n = 10; P = 0.02 vs. control), and complete recovery from inactivation was prolonged from 8.0 +/- 1.3 ms to 17.0 +/- 2.6 ms (P < 0.001 vs. control). These findings suggest that GP may alter function of voltage-activated sodium channels, but the mechanism is unproven and may be indirect. Limitation of firing was observed in > or = 50% of neurons at concentrations in the range of those found in plasma and cerebrospinal fluid of patients treated successfully with GP. These results suggest that limiting the rate of firing of sodium-dependent action potentials may contribute to the anticonvulsant efficacy of gabapentin.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Wamil AW,McLean MJdoi
10.1016/0920-1211(94)90074-4subject
Has Abstractpub_date
1994-01-01 00:00:00pages
1-11issue
1eissn
0920-1211issn
1872-6844pii
0920-1211(94)90074-4journal_volume
17pub_type
杂志文章abstract：OBJECTIVE:We aim to delineate the genetic and clinical features of SCN8A developmental and epileptic encephalopathy. METHODS:Nine patients with SCN8A developmental and epileptic encephalopathy were included in this study. Genetic and clinical features and effectiveness of sodium channel blockers were assessed in patie...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2019.106222
更新日期：2019-12-01 00:00:00
abstract：OBJECTIVE:To determine the relative bioavailability and tolerability of a topiramate (TPM) suspension after rectal administration. DESIGN/METHOD:Seven healthy men and five healthy non-pregnant women were enrolled. A 100 or 200 mg tablet of TPM was given orally and a 200 mg dose was given rectally in a randomized, open...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0920-1211(03)00083-4
更新日期：2003-05-01 00:00:00
abstract：PURPOSE:Diffusion tensor imaging (DTI) provides information about magnitude (diffusivity) and directionality (anisotropy, FA) of water diffusion. We explored the characteristics of pathology-proven cortical dysplasia (CD) in the posterior quadrant in a case series of three patients using DTI measures, to assess associa...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2010.03.006
更新日期：2010-08-01 00:00:00
abstract：:An intravenous formulation of carbamazepine (CBZ) was administered to 113 (60 male; 53 female) persons with epilepsy aged 19-87 years. Subjects received 100mg of study drug as replacement for 100mg of their usual morning dose of CBZ. There were no significant changes in blood pressure or heart rate suggesting that thi...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.01.013
更新日期：2009-04-01 00:00:00
abstract：:The aim of the present study was to evaluate the risk of intrauterine growth delay in the offspring of epileptic mothers and to quantify the risks of intrauterine exposure to antiepileptic drugs (AEDs). Data concerning 870 newborns, prospectively collected in Canada, Japan and Italy, using the same study design, were ...
journal_title：Epilepsy research
pub_type： 杂志文章,多中心研究
doi：10.1016/s0920-1211(99)00020-0
更新日期：1999-08-01 00:00:00
abstract：:Women with epilepsy have different needs from men, particularly associated with childbearing. Despite clinical guidelines, the care of women with epilepsy remains suboptimal. The aim of this study was to establish whether women with epilepsy recall being given information on topics relating to childbearing. Design of ...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章
doi：10.1016/s0920-1211(02)00135-3
更新日期：2002-12-01 00:00:00
abstract：:Prevention of epileptogenesis after brain insults, such as status epilepticus (SE), head trauma, or stroke, remains a challenge. Even if epilepsy cannot be prevented, it would be beneficial if the pathologic process could be modified to result in a less severe disease. We examined whether early discontinuation of SE r...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2004.10.003
更新日期：2005-01-01 00:00:00
abstract：:Glutamic acid decarboxylase autoantibodies (GADA) and anti-cardiolipin autoantibodies (ACA) have been detected in adult subjects with epilepsy, though the functional implications of these findings are a matter of debate. This study aimed to determine the prevalence of GADA and ACA and to investigate their clinical sig...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.02.009
更新日期：2013-07-01 00:00:00
abstract：OBJECTIVE:To assess the correlation between time of day and sleep-wake state prior to seizure onset for seizures recorded in an inpatient epilepsy monitoring unit. METHODS:We prospectively enrolled a consecutive series of patients undergoing inpatient epilepsy monitoring. For each epileptic seizure recorded, continuou...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106524
更新日期：2021-01-01 00:00:00
abstract：OBJECTIVE:Aphasic status epilepticus (ASE), although rare, may often remain underdiagnosed. We aimed to report the patients diagnosed with ASE and describe their clinical presentation, etiology, electrophysiological findings, neuroimaging, treatment options, and outcome. METHODS:We retrospectively analyzed a series of...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106479
更新日期：2020-11-01 00:00:00
abstract：PURPOSE:Pyridoxine-dependent epilepsy (PDE) is a rare autosomal recessive disorder caused by mutations of the ALDH7A1 gene. We aimed to analyze the relations between the clinical diagnosis and treatment of PDE and ALDH7A1 gene mutations in Chinese PDE patients. METHODS:The clinical manifestations, diagnosis and treatm...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.10.002
更新日期：2015-12-01 00:00:00
abstract：:A partially purified extract from American ginseng has been shown to have anticonvulsant activity. To identify the active components in this extract, the activities of the individual ginsenosides (Rb(1), Rb(3) and Rd), mixtures of the purified ginsenosides and a newly prepared Rb fraction were determined. One hour aft...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2006.05.010
更新日期：2006-08-01 00:00:00
abstract：:Generalized seizures can induce both hypertension and hyperglycemia which may aggravate preexisting cerebral or medical conditions in patients. In vivo fluorescent imaging of regional cortical blood flow and brain intracellular pH (pHi) was performed in fasted New Zealand rabbits (n = 35) in which either mean arterial...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(93)90017-2
更新日期：1993-02-01 00:00:00
abstract：:This paper reports the results of a 12-month prospective follow-up study on the effects of carbamazepine (CBZ) medication on serum sex and pituitary hormone concentrations in 21 male patients with recently diagnosed epilepsy. The results of the present study indicate that a change occurs in the androgen balance during...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(91)90025-b
更新日期：1991-07-01 00:00:00
abstract：:This study aimed to assess neuropsychiatric comorbidities and analyze risk factors in Chinese children with epilepsy. Children with epilepsy aged between 6 and 16 years from the Children's Hospital of Fudan University were included. Children with asthma and typically developing children were matched for age and gender...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.11.011
更新日期：2018-02-01 00:00:00
abstract：:The purpose of this study is to propose and investigate a new approach for discriminating between focal and non-focal hemispheres in intractable temporal lobe epilepsy, based on applying multivariate time series analysis to the discharge-free background brain activity observed in nocturnal electrocorticogram (ECoG) ti...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2004.06.003
更新日期：2004-09-01 00:00:00
abstract：:Audiogenic seizures in genetically susceptible rodents are provoked by intense acoustic stimulations which result in a tonic seizure associated with a short flattening of the EEG. These seizures have been shown to involve primarily brainstem structures. Daily exposure to sound for 30-40 days produced a permanent chang...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(92)90094-a
更新日期：1992-05-01 00:00:00
abstract：:Jasmine flowers and leaves are used extensively in folk medicine in different parts of the world to treat a variety of diseases. However, there are very few published reports on the neuropsychiatric effects of Jasmine extracts. Hence, the objectives of the present study were to examine the effects of an alcohol extrac...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.02.012
更新日期：2017-03-01 00:00:00
abstract：:Chemical kindling, as an experimental model of epileptogenesis, is induced by repetitive administration of subconvulsive amount of excitatory drugs. Kindled mice do not typically display spontaneous recurrent seizures, but are instead characterized by enhanced seizure susceptibility to convulsive stimulations. In orde...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.10.019
更新日期：2014-01-01 00:00:00
abstract：:We herein investigated risk factors of pediatric acute encephalopathy (AE) regarding the hitherto uncharacterized genetic background of seizure susceptibility underlying the pathogenesis of AE. The study included 15 patients with a history of various types of AE in childhood. We undertook the mutational analysis of th...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2010.07.005
更新日期：2010-10-01 00:00:00
abstract：:Status epilepticus (SE) is a common neurological and medical emergency. Despite the significant mortality associated with SE, no human data have been available regarding cardiovascular changes prior to death in patients with this condition. This study was conducted to measure hemodynamic trends in the 24 h prior to de...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(98)00031-x
更新日期：1998-08-01 00:00:00
abstract：RATIONALE:Epilepsy is the most common serious neurological condition in the world, and an important cause of mortality and disability in developing countries. Because epidemiological and clinical characteristics of epilepsy vary by region, it is important to know the peculiarities of epilepsy in this area of the Americ...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/j.eplepsyres.2005.07.002
更新日期：2005-08-01 00:00:00
abstract：:The effects of GABA uptake inhibitors, SKF 89976A and SKF 100330A, on recurrent inhibition were studied in the rat hippocampal slice preparation by the antidromic-orthodromic stimulation test. Population spikes evoked orthodromically by stimulation of the stratum radiatum and recorded in the CA1 pyramidal cell body la...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(93)90026-4
更新日期：1993-10-01 00:00:00
abstract：:This paper reports the first systematic review of uncommon causes of status epilepticus reported in the literature between 1990 and 2008. Uncommon causes are defined as those not listed in the main epidemiological studies of status epilepticus. 181 causes were identified. These were easily categorised into 5 specific ...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/j.eplepsyres.2010.07.015
更新日期：2010-10-01 00:00:00
abstract：:Burst structure and synchronized firing of bursts were studied, in the interictal period, using auto- and cross-correlation analyses in human amygdala neurons in temporal lobe epilepsy patients diagnosed as having a unilateral limbic seizure focus in anterior hippocampus and/or amygdala. Satisfactory single unit recor...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(87)90047-7
更新日期：1987-01-01 00:00:00
abstract：INTRODUCTION:Juvenile myoclonic epilepsy (JME) is a genetic generalized epilepsy syndrome. Under appropriate antiepileptic drugs (AED) up to 85% of patients become seizure-free, but many may have a relapse after AED withdrawal. METHODS:We retrospectively studied 242 patients with JME at the Department of Neurology, Me...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.09.008
更新日期：2014-12-01 00:00:00
abstract：:There is a remarkable array of new chemical entities in the current antiepileptic drug (AED) development pipeline. In some cases, the compounds were synthesized in an attempt improve upon the activity of marketed AEDs. In other cases, the discovery of antiepileptic potential was largely serendipitous. Entry into the p...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/j.eplepsyres.2006.02.004
更新日期：2006-06-01 00:00:00
abstract：:Brain slices from adult rats that included ventral hippocampus and adjacent parahippocampal areas were studied at various sites for the appearance of epileptiform discharges as extracellular potassium ([K+]o) was systematically varied over the range of 3 mM to 10 mM. The development of evoked epileptiform discharges (...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(93)90043-7
更新日期：1993-03-01 00:00:00
abstract：:Vigabatrin increases GABA concentrations by inhibiting GABA transaminase. In previous studies, it was shown that vigabatrin increases the incidence of Spike and Wave Discharges (SWD) in the WAG/Rij rat model for absence epilepsy. Since following a single dose of vigabatrin GABA concentrations are known to be increased...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106379
更新日期：2020-09-01 00:00:00
abstract：:Seletracetam (SEL), an analog of the antiepileptic drug levetiracetam (LEV), decreases seizure activity in a number of epilepsy models and binds to the synaptic vesicle protein SV2A with a higher affinity than LEV. Experiments were performed to determine if SEL, like LEV, reduces the later EPSPs in long trains of stim...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.08.006
更新日期：2015-11-01 00:00:00
