Abnormalities in the levels of extracellular and tissue amino acids in the brain of the seizure-susceptible rat.

Abstract:

:Basal and high potassium-stimulated release of endogenous amino acids was measured using brain dialysis in the hippocampus of urethane-anesthetized seizure-resistant (SR) and seizure-susceptible (SS) rats. Moreover, the tissue level of amino acids was determined in the hippocampus, sensorimotor cortex, cerebellum and corpus striatum. The basal extracellular concentration of amino acids did not differ between SR and SS rats. However, aspartate release was higher, and taurine and phosphoethanolamine release was lower in SS rats during stimulation with 100 mM K+. Several strain differences were observed with regard to regional tissue levels of amino acids. Aspartate was significantly elevated in the hippocampus, cortex and cerebellum of SS animals, and the catecholamine precursor tyrosine was diminished in all regions examined. Other disparities included a depressed gamma-aminobutyrate concentration in the hippocampus and cortex, slightly increased levels of phosphoethanolamine in the cerebellum and minor decreases in striatal and cortical taurine. Glutamate, glutamine, serine and alanine concentrations were not significantly altered in any brain area of the SS rat. The results confirm and extend previous findings on abnormalities in aspartate, taurine and phosphoethanolamine regulation in this model. In addition, decreased availability of tyrosine may provide a partial explanation for the well-documented deficiency in cerebral norepinephrine in the SS strain.

journal_name

Epilepsy Res

journal_title

Epilepsy research

authors

Lehmann A

doi

10.1016/0920-1211(89)90040-5

subject

Has Abstract

pub_date

1989-03-01 00:00:00

pages

130-7

issue

2

eissn

0920-1211

issn

1872-6844

pii

0920-1211(89)90040-5

journal_volume

3

pub_type

杂志文章
  • Validation of the Chinese version of the Liverpool Adverse Events Profile in patients with epilepsy.

    abstract::The objective of the study was to validate the Chinese version of The Liverpool Adverse Events Profile (LAEP) in patients with epilepsy. The scale was translated from the English version into a Chinese version and was then back-translated to examine its accuracy. Content validity, concurrent validity, and construct va...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2011.01.008

    authors: Chen HF,Tsai YF,Shih MS,Chen JC

    更新日期:2011-03-01 00:00:00

  • Population pharmacokinetics of gabapentin in infants and children.

    abstract:PURPOSE:To characterize gabapentin pharmacokinetics in infants and children using a population approach and to identify important demographic and/or physiologic determinants of gabapentin disposition. METHODS:Gabapentin was administered in single doses of 10 mg/kg (N=48 healthy subjects, age 1 month-12 years) or in mu...

    journal_title:Epilepsy research

    pub_type: 临床试验,杂志文章

    doi:10.1016/s0920-1211(01)00311-4

    authors: Ouellet D,Bockbrader HN,Wesche DL,Shapiro DY,Garofalo E

    更新日期:2001-12-01 00:00:00

  • Distinct absorption characteristics of oral formulations of valproic acid/divalproex available in the United States.

    abstract::Five oral formulations of valproic acid (VPA)/divalproex sodium are approved and commonly used in the US for treatment of epilepsy, mania/bipolar disorder and migraine prophylaxis. These formulations have unique pharmacokinetic and formulation characteristics and are designed to treat distinct patient populations. We ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2006.11.005

    authors: Dutta S,Reed RC

    更新日期:2007-03-01 00:00:00

  • Neuroprotective effect of remacemide hydrochloride in a perforant pathway stimulation model of status epilepticus in the rat.

    abstract::Previous studies have demonstrated that remacemide and its desglycinyl metabolite, AR-R 2495AA, reduce neuronal damage in animal models of ischemia, subarachnoid hemorrhage, and traumatic brain injury. The aim of the present study was to investigate whether remacemide hydrochloride also alleviates seizure-induced neur...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/s0920-1211(98)00122-3

    authors: Halonen T,Nissinen J,Pitkänen A

    更新日期:1999-04-01 00:00:00

  • Effect of levetiracetam on the pharmacokinetics of adjunctive antiepileptic drugs: a pooled analysis of data from randomized clinical trials.

    abstract::The purpose of this study was to determine the influence of levetiracetam on the steady-state serum concentrations of other commonly used antiepileptic drugs (AEDs). Serum AED concentrations were measured at baseline and after adjunctive therapy with levetiracetam (1000-4000 mg/day) or placebo in four phase III trials...

    journal_title:Epilepsy research

    pub_type: 临床试验,杂志文章,meta分析,随机对照试验

    doi:10.1016/j.eplepsyres.2005.01.005

    authors: Gidal BE,Baltès E,Otoul C,Perucca E

    更新日期:2005-03-01 00:00:00

  • Emergent network topology at seizure onset in humans.

    abstract::Epilepsy - the world's most common serious brain disorder - is defined by recurrent unprovoked seizures that result from complex interactions between distributed neural populations. We explore some macroscopic characteristics of emergent ictal networks by considering intracranial recordings from human subjects with in...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2008.02.002

    authors: Kramer MA,Kolaczyk ED,Kirsch HE

    更新日期:2008-05-01 00:00:00

  • Lamotrigine-induced carbamazepine toxicity: an interaction with carbamazepine-10,11-epoxide.

    abstract::We report an interaction between lamotrigine (LTG), a new antiepileptic drug (AED), and carbamazepine (CBZ) and its primary metabolite CBZ-10,11-epoxide (CBZ-E) in 9 consecutive patients (5 male, 4 female, aged 19-31 years). After introduction of LTG (median daily dose 200 mg, range 100-300 mg) the mean serum CBZ-E co...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/0920-1211(92)90049-y

    authors: Warner T,Patsalos PN,Prevett M,Elyas AA,Duncan JS

    更新日期:1992-04-01 00:00:00

  • A common genetic basis for idiosyncratic toxicity of warfarin and phenytoin.

    abstract::CYP2C9 is mainly responsible for the metabolic clearance of phenytoin and (S)-warfarin. We have shown previously that mutations in the CYP2C9 gene are associated with diminished metabolism of (S)-warfarin, and so we have now studied the metabolism of phenytoin to its primary inactive metabolite, (S)-pHPPH, by these mu...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/s0920-1211(99)00017-0

    authors: Rettie AE,Haining RL,Bajpai M,Levy RH

    更新日期:1999-07-01 00:00:00

  • Predictive indicators for the development of epilepsy after acute encephalopathy with biphasic seizures and late reduced diffusion.

    abstract::Acute encephalopathy with biphasic seizures and late reduced diffusion (AESD) is a newly defined clinicoradiologic syndrome characterized by biphasic seizures and altered consciousness followed by restricted diffusion in the white matter on magnetic resonance imaging in acute phase. Intractable epilepsy commonly occur...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2018.04.006

    authors: Ichimiya Y,Kaku N,Sanefuji M,Torio M,Mizuguchi S,Motomura Y,Muraoka M,Lee S,Baba H,Sonoda Y,Ishizaki Y,Sasazuki M,Sakai Y,Maehara Y,Ohga S

    更新日期:2018-07-01 00:00:00

  • Spatiotemporal mapping of interictal epileptiform discharges in human absence epilepsy: A MEG study.

    abstract:PURPOSE:Although absence epilepsy is considered to be a prototypic type of generalized epilepsy, it is still under debate whether generalized 3 Hz spike-and-wave discharges (SWDs) might have a cortical focal origin. Here it is investigated whether focal interictal epileptiform discharges (IEDs), which typically occur i...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2015.11.013

    authors: Rozendaal YJ,van Luijtelaar G,Ossenblok PP

    更新日期:2016-01-01 00:00:00

  • Preclinical characterization of MDL 27,192 as a potential broad spectrum anticonvulsant agent with neuroprotective properties.

    abstract::The compound 5-(4-chlorophenyl)-2,4-dihydro-4-ethyl-3H-1,2,4-triazol-3-one (MDL 27,192) was evaluated in a variety of rodent models to assess its anticonvulsant profile and its potential neuroprotective activity. MDL 27,192 demonstrated anticonvulsant activity in a wide range of epilepsy models that are genetically-ba...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/s0920-1211(96)01020-0

    authors: Kehne JH,Kane JM,Chaney SF,Hurst G,McCloskey TC,Petty MA,Senyah Y,Wolf HH,Zobrist R,White HS

    更新日期:1997-04-01 00:00:00

  • Brief asymmetric tonic posturing with diffuse low-voltage fast activity in seizures arising from the mesial parietal region.

    abstract:AIM:Seizures originating from the parietal lobe can demonstrate variable semiology. Our aim was to describe the electroclinical features of seizures originating from the mesial parietal lobe. METHOD:We identified four patients through the Comprehensive Epilepsy Program at our institution, who had strong evidence of a ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2014.09.011

    authors: Khan SA,Carney PW,Archer JS

    更新日期:2014-12-01 00:00:00

  • Standard dose valproic acid does not cause additional cognitive impact in a rodent model of intractable epilepsy.

    abstract::Children with epilepsy face significant cognitive and behavioral impairments. These impairments are due to a poorly characterized interaction between the underlying etiology, the effect of seizures and the effect of medication. The large variation in these factors make understanding the main drivers of cognitive impai...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2014.11.005

    authors: Jellett AP,Jenks K,Lucas M,Scott RC

    更新日期:2015-02-01 00:00:00

  • The effects of octanol on penicillin induced epileptiform activity in rats: an in vivo study.

    abstract::The common features of all types of epilepsy are the synchronized and uncontrolled discharges of nerve cell assemblies. The reason for the pathologically synchronized discharges of the neuron is not exactly known yet. Recent reports claim that gap junctions have a critical role in neuronal synchronization. The present...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2006.06.010

    authors: Bostanci MO,Bağirici F

    更新日期:2006-10-01 00:00:00

  • The uncommon causes of status epilepticus: a systematic review.

    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

    authors: Tan RY,Neligan A,Shorvon SD

    更新日期:2010-10-01 00:00:00

  • Pregnancy outcomes of refractory epilepsy patients treated with Brain-responsive neurostimulation.

    abstract:OBJECTIVE:To study the pregnancy outcomes, including obstetric complications and fetal outcomes, in pregnant women with epilepsy (WWE) treated with direct brain-responsive neurostimulation (RNS System). METHODS:Retrospective review of obstetric outcomes and fetal outcomes in WWE treated with the RNS System at nine com...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2020.106532

    authors: Li Y,Eliashiv D,LaHue SC,Rao VR,Martini ML,Panov F,Oster JM,Yoshii-Contreras J,Skidmore CT,Kalayjian LA,Millett D,Meador KJ

    更新日期:2021-01-01 00:00:00

  • Long-term decrease in Na+,K+-ATPase activity after pilocarpine-induced status epilepticus is associated with nitration of its alpha subunit.

    abstract::Temporal lobe epilepsy (TLE) is the most common type of epilepsy with about one third of TLE patients being refractory to antiepileptic drugs. Knowledge about the mechanisms underlying seizure activity is fundamental to the discovery of new drug targets. Brain Na(+),K(+)-ATPase activity contributes to the maintenance ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2014.09.025

    authors: Funck VR,Ribeiro LR,Pereira LM,de Oliveira CV,Grigoletto J,Fighera MR,Royes LF,Furian AF,Oliveira MS

    更新日期:2014-12-01 00:00:00

  • Sensorimotor seizures of pediatric onset with unusual posteriorly oriented rolandic spikes.

    abstract:BACKGROUND:Benign childhood epilepsy with centro-temporal spikes (BECCT) is usually associated with anteriorly oriented rolandic discharges. We report an unusual type of childhood-onset epilepsy with sensorimotor seizures associated with posteriorly oriented rolandic discharges. METHODS:Among 942 patients who underwen...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2009.01.012

    authors: Kakisaka Y,Nakasato N,Haginoya K,Kanno A,Tsuchiya S

    更新日期:2009-04-01 00:00:00

  • White matter abnormalities in patients with temporal lobe epilepsy and amygdala enlargement: Comparison with hippocampal sclerosis and healthy subjects.

    abstract:PURPOSE:Cases of temporal lobe epilepsy (TLE) with ipsilateral amygdala enlargement (AE) have increasingly been reported. However, the white matter (WM) abnormalities of TLE patients with AE remain poorly investigated. Here we explored macrostructural and microstructural WM abnormalities in TLE patients with AE compare...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2016.09.011

    authors: Sone D,Ota M,Maikusa N,Kimura Y,Sumida K,Yokoyama K,Imabayashi E,Watanabe M,Watanabe Y,Okazaki M,Sato N,Matsuda H

    更新日期:2016-11-01 00:00:00

  • Assessing hippocampal functional reserve in temporal lobe epilepsy: a multi-voxel pattern analysis of fMRI data.

    abstract::Assessing the functional reserve of key memory structures in the medial temporal lobes (MTL) of pre-surgical patients with intractable temporal lobe epilepsy (TLE) remains a challenge. Conventional functional MRI (fMRI) memory paradigms have yet to fully convince of their ability to confidently assess the risk of a po...

    journal_title:Epilepsy research

    pub_type: 杂志文章,随机对照试验

    doi:10.1016/j.eplepsyres.2013.01.004

    authors: Bonnici HM,Sidhu M,Chadwick MJ,Duncan JS,Maguire EA

    更新日期:2013-07-01 00:00:00

  • GABAergic neurons are spared after intrahippocampal kainate in the rat.

    abstract::The present study used Nissl stains and glutamate decarboxylase immunoreactivity (GAD-IR) to quantify the acute and chronic toxicity of kainic acid (KA) on focal and remote hippocampal principal neurons (i.e., pyramidal and granule cells) and on putative inhibitory neurons (GAD-IR or GABAergic) following intrahippocam...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/0920-1211(90)90063-2

    authors: Davenport CJ,Brown WJ,Babb TL

    更新日期:1990-01-01 00:00:00

  • Self-limited epilepsy with centro-temporal spikes: A study of 46 patients with unusual clinical manifestations.

    abstract:PURPOSE:We retrospectively analyzed the seizure characteristics, EEG pattern, treatment, and outcome in a series of patients with self-limited epilepsy with centrotemporal spikes (SLECTS) who presented with unusual clinical manifestations. METHOD:A retrospective, descriptive, multicenter study was conducted evaluating...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2020.106507

    authors: Galicchio S,Espeche A,Cersosimo R,Chacon S,Gamboni B,Adi J,Fasulo L,Semprino M,Fortini S,Cachia P,Caraballo RH

    更新日期:2021-01-01 00:00:00

  • Developing an effective program to complete ictal SPECT in the epilepsy monitoring unit.

    abstract::With the availability of more stable radiopharmaceuticals, the ictal single photon emission computed tomography (SPECT) perfusion study has emerged as a useful noninvasive functional neuroimaging tool in the presurgical evaluation of patients with medically intractable partial epilepsy. The purpose of this study was t...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/s0920-1211(98)00097-7

    authors: Smith BJ,Karvelis KC,Cronan S,Porter W,Smith L,Pantelic MV,Elisevich K

    更新日期:1999-02-01 00:00:00

  • Treatment of experimental status epilepticus with the GABA uptake inhibitor, tiagabine.

    abstract::The potential clinical efficacy of tiagabine for control of status epilepticus was evaluated in an experimental model. Tiagabine was administered to cobalt-lesioned rats in which status epilepticus was induced by injection of homocysteine thiolactone. Tiagabine was effective in controlling status epilepticus in this m...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/0920-1211(94)90067-1

    authors: Walton NY,Gunawan S,Treiman DM

    更新日期:1994-12-01 00:00:00

  • Sleep influences the intracerebral EEG pattern of focal cortical dysplasia.

    abstract:OBJECTIVE:Focal cortical dysplasia (FCD) is able to generate an intrinsic pathological EEG activity characterized by a continuous or near-continuous spiking. Different patterns of discharge were described. We examined quantitatively the distribution of the intracerebral FCD patterns in relation to sleep in order to inv...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2015.03.014

    authors: Menezes Cordeiro I,von Ellenrieder N,Zazubovits N,Dubeau F,Gotman J,Frauscher B

    更新日期:2015-07-01 00:00:00

  • Development and validation of AIIMS modified INCLEN diagnostic instrument for epilepsy in children aged 1 month-18 years.

    abstract:OBJECTIVES:There is shortage of specialists for the diagnosis of children with epilepsy, especially in resource limited settings. Existing INCLEN (International Clinical Epidemiology Network) instrument was validated for children aged 2-9 years. The current study validated modifications of the same including wider symp...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2017.01.008

    authors: Gulati S,Patel H,Chakrabarty B,Dubey R,Arora NK,Pandey RM,Paul VK,Ramesh K,Anand V,Meena A

    更新日期:2017-02-01 00:00:00

  • Are some idiopathic epilepsies disorders of ion channels?: A working hypothesis.

    abstract::Epilepsy is a common neurological disease and encompasses a variety of disorders with paroxysms. Although there is a genetic component in the pathogenesis of epilepsy, the molecular mechanisms of this syndrome remains poorly understood. Linkage analysis and positional cloning have not been sufficient tools for determi...

    journal_title:Epilepsy research

    pub_type: 杂志文章,评审

    doi:10.1016/s0920-1211(00)00141-8

    authors: Hirose S,Okada M,Kaneko S,Mitsudome A

    更新日期:2000-10-01 00:00:00

  • Electro-clinical analysis of epilepsy patients with generalized seizures on adjunctive perampanel treatment.

    abstract::Quantifying epileptiform discharges before and after the initiation of treatment can be useful for evaluating the efficacy of antiepileptic drugs in generalized epilepsy. The aim of this study was to determine if the selective α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) receptor antagonist perampanel ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2020.106378

    authors: Montoya Gutiérrez FJ,Díaz Román M,Cerveró Albert D

    更新日期:2020-09-01 00:00:00

  • Metabolic and endocrine effects of valproic acid chronic treatment.

    abstract::Treatment of epileptic patients with valproic acid (VPA) may be associated with substantial weight changes that may increase morbidity and impair adherence to the treatment regimen. VPA-induced weight gain seems to be associated with many metabolic disturbances; the most frequent are hyperinsulinemia and insulin resis...

    journal_title:Epilepsy research

    pub_type: 杂志文章,评审

    doi:10.1016/j.eplepsyres.2013.08.016

    authors: Belcastro V,D'Egidio C,Striano P,Verrotti A

    更新日期:2013-11-01 00:00:00

  • Anticonvulsant Effects of Thalidomide on Pentylenetetrazole-Induced Seizure in Mice: A Role for Opioidergic and Nitrergic Transmissions.

    abstract::Although accumulating evidence indicates that the immunomodulatory medication thalidomide exerts anticonvulsant properties, the mechanisms underlying such effects of thalidomide are still unknown. Our previous preclinical study suggested that nitric oxide (NO) signaling may be involved in the anticonvulsant effects of...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2020.106362

    authors: Pourshadi N,Rahimi N,Ghasemi M,Faghir-Ghanesefat H,Sharifzadeh M,Dehpour AR

    更新日期:2020-08-01 00:00:00