Activation of group 2 metabotropic glutamate receptors reduces behavioral and electrographic correlates of pilocarpine induced status epilepticus.

Abstract:

:Novel treatments for epilepsy are necessary because many epilepsy patients are resistant to medication. Metabotropic glutamate receptors (mGluRs), specifically mGluR 2 and 3, may serve as antiepileptic drug targets because of their role in controlling synaptic release. In this study, we administered a Group 2 mGluR agonist, LY379268, one of two mGluR2-specific positive allosteric modulators, BINA or CBiPES, or a cocktail of both BINA and LY379268 in a series of experiments using the pilocarpine model of SE. In one study, groups received treatments 15 min prior to pilocarpine, while in a second study groups received treatments after SE had been initiated to determine whether the drugs could reduce development and progression of SE. We measured bouts of stage 5 seizures, latency to the first seizure, and the maximum Racine score to characterize the seizure severity. We analyzed mouse EEG with implanted electrodes using a power analysis. We found that pretreatment and posttreatment with LY379268 was effective at reducing both behavioral correlates and power in EEG bandwidths associated with seizure, while CBiPES was less effective and BINA was ineffective. These data generally support continued development of mGluR2 pharmacology for novel antiepileptic drugs, though further study with additional drugs and concentrations will be necessary.

journal_name

Epilepsy Res

journal_title

Epilepsy research

authors

Caulder EH,Riegle MA,Godwin DW

doi

10.1016/j.eplepsyres.2013.10.009

subject

Has Abstract

pub_date

2014-02-01 00:00:00

pages

171-81

issue

2

eissn

0920-1211

issn

1872-6844

pii

S0920-1211(13)00274-X

journal_volume

108

pub_type

杂志文章
  • Involvement of α4β2 nicotinic acetylcholine receptors in working memory impairment induced by repeated electroconvulsive seizures in rats.

    abstract::A role of cholinergic nervous system in the behavioral impairments induced by repeated ECS is not understood. The α4β2 nicotinic acetylcholine receptor (nAChR) agonist ABT-418, but not the α7 nAChR agonist, significantly ameliorated the impairment of spontaneous alternation behavior in the Y-maze test. And, repeated E...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2012.09.017

    authors: Hidaka N,Suemaru K,Kato Y,Araki H

    更新日期:2013-03-01 00:00:00

  • Alterations in hippocampal voltage-gated calcium channel alpha 1 subunit expression patterns after kainate-induced status epilepticus in aging rats.

    abstract::Young adult and aged male Fisher 344 rats underwent kainate-induced convulsive status epilepticus (SE) for 4 h prior to sacrifice to determine potential aging-related differences in the effect of prolonged SE on the expression of hippocampal voltage-gated calcium channels (VGCCs). Immunohistochemistry was performed on...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2003.10.007

    authors: Kelly KM,Ikonomovic MD,Abrahamson EE,Kharlamov EA,Hentosz TM,Armstrong DM

    更新日期:2003-11-01 00:00:00

  • Interictal HM-PAO SPECT: a routine investigation in patients with medically intractable complex partial seizures?

    abstract::Single photon emission computed tomography (SPECT) is increasingly being used as an adjunctive technique in the localisation of epileptogenic foci prior to surgery. As yet, few studies have been undertaken to establish the clinical associations of areas of reduced cerebral perfusion. Sixty-three consecutive patients (...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/0920-1211(92)90010-q

    authors: Duncan S,Gillen G,Adams FG,Duncan R,Brodie MJ

    更新日期:1992-10-01 00:00:00

  • Defining incident cases of epilepsy in administrative data.

    abstract:PURPOSE:To determine the minimum enrollment duration for identifying incident cases of epilepsy in administrative data. METHODS:We performed a retrospective dynamic cohort study using Ohio Medicaid data from 1992 to 2006 to identify a total of 5037 incident epilepsy cases who had at least 1 year of follow-up prior to ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2013.05.005

    authors: Bakaki PM,Koroukian SM,Jackson LW,Albert JM,Kaiboriboon K

    更新日期:2013-09-01 00:00:00

  • A prospective study of serum sex hormones during carbamazepine therapy.

    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

    authors: Isojärvi JI,Pakarinen AJ,Myllylä VV

    更新日期:1991-07-01 00:00:00

  • High dose (4 mg/kg/day) versus usual dose (2 mg/kg/day) oral prednisolone for treatment of infantile spasms: an open-label, randomized controlled trial.

    abstract:OBJECTIVES:This study aimed to test the hypothesis that high-dose prednisolone (4 mg/kg/day) may be more efficacious than usual-dose (2 mg/kg/day) prednisolone for spasm resolution at 14-days in children with infantile spasms. METHODS:This was a randomized, open-label-trial conducted at a tertiary-level-hospital from ...

    journal_title:Epilepsy research

    pub_type: 杂志文章,随机对照试验

    doi:10.1016/j.eplepsyres.2014.06.019

    authors: Chellamuthu P,Sharma S,Jain P,Kaushik JS,Seth A,Aneja S

    更新日期:2014-10-01 00:00:00

  • Reinforcing and punishing consequences of kindling.

    abstract::The motivational consequences of kindling were examined in the conditioned place preference paradigm. In a distinctive environment, rats received stimulation of the amygdala that triggered afterdischarge (AD) alone or AD and generalized seizures. After 4 conditioning trials, preference for the conditioning environment...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/0920-1211(92)90051-t

    authors: Corcoran ME,Lanius R,Duren A

    更新日期:1992-12-01 00:00:00

  • Seizure detection using digital trend analysis: Factors affecting utility.

    abstract:BACKGROUND:EEG monitoring is important for the early detection of seizures during the course of critical illness. However, the logistics of real time EEG interpretation is challenging for the neurophysiology and critical care medicine teams. This study evaluated factors affecting the utility of digital trend analysis (...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2010.10.018

    authors: Akman CI,Micic V,Thompson A,Riviello JJ Jr

    更新日期:2011-01-01 00:00:00

  • Effects of single and repeated administration of vigabatrin on the performance of rats in a 5-choice serial reaction time task.

    abstract::The present study investigated whether pharmacological stimulation of the GABAergic system can affect attention. The effects of vigabatrin, a novel antiepileptic drug, on the performance of rats in a 5-choice serial reaction time task assessing selective attention were studied. The effects of acute (100, 300, 500 and ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/0920-1211(92)90057-z

    authors: Mazurkiewicz M,Sirviö J,Riekkinen P Sr

    更新日期:1992-12-01 00:00:00

  • Volume determination of amygdala and hippocampus at 1.5 and 3.0T MRI in temporal lobe epilepsy.

    abstract::Since magnetic resonance imaging (MRI) technique is constantly evolving with higher field strength scanners, the question arises whether images from different field strength scanners can be used interchangeably for scientific and clinical purposes. We address this issue in a study group of patients with temporal lobe ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2008.06.012

    authors: Scorzin JE,Kaaden S,Quesada CM,Müller CA,Fimmers R,Urbach H,Schramm J

    更新日期:2008-11-01 00:00:00

  • Serotonin depletion effects on the pilocarpine model of epilepsy.

    abstract::The monoamine content in cerebral structures has been related to neuronal excitability and several approaches have been used to study this phenomenon during seizure vulnerability. In the present work, we have described the effects of serotonin (5-HT) depletion after the administration of 5,7-dihydroxytryptamine (5,7-D...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2008.08.010

    authors: Trindade-Filho EM,de Castro-Neto EF,de A Carvalho R,Lima E,Scorza FA,Amado D,Naffah-Mazzacoratti Mda G,Cavalheiro EA

    更新日期:2008-12-01 00:00:00

  • Proton MR spectroscopy of metabolite concentrations in temporal lobe epilepsy and effect of temporal lobe resection.

    abstract:PURPOSE:To use proton Magnetic Resonance Spectroscopy (MRS) to measure in vivo temporal lobe GABA and glutamate plus glutamine (GLX) concentrations in patients with temporal lobe epilepsy (TLE) attributable to unilateral hippocampal sclerosis (HS) before and following anterior temporal lobe resection (ATLR). METHODS:W...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2008.11.006

    authors: Simister RJ,McLean MA,Barker GJ,Duncan JS

    更新日期:2009-02-01 00:00:00

  • Effects of Jasminum multiflorum leaf extract on rodent models of epilepsy, motor coordination and anxiety.

    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

    authors: Addae JI,Pingal R,Walkins K,Cruickshank R,Youssef FF,Nayak SB

    更新日期:2017-03-01 00:00:00

  • Designing a new proof-of-principle trial for treatment of partial seizures to demonstrate efficacy with minimal sample size and duration-a case study.

    abstract::The ideal proof-of-principle study design provides a strong efficacy signal over the shortest duration, while exposing the fewest patients possible. Data from a large database (Pfizer Inc) which studied add-on pregabalin for the treatment of partial seizures was used to model how duration of baseline, post-randomizati...

    journal_title:Epilepsy research

    pub_type: 杂志文章,随机对照试验

    doi:10.1016/j.eplepsyres.2013.04.008

    authors: French JA,Cabrera J,Emir B,Whalen E,Lu F

    更新日期:2013-09-01 00:00:00

  • Interictal SPECT of rCBF is of clinical utility in the preoperative evaluation of patients with partial epilepsy.

    abstract::Fifty-eight patients with drug-resistant partial epilepsy were studied preoperatively by interictal rCBF measurements using 99mTc-HMPAO and a dedicated brain SPECT camera (Tomomatic 64). Follow-up of seizure outcome, using the "Engel score", was at least 3 years. The data were analyzed in a blinded set-up, first visua...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/0920-1211(96)00018-6

    authors: Andersen AR,Hansen BA,Høgenhaven H,Herning M,Paulson O,Dam M

    更新日期:1996-09-01 00:00:00

  • Bupropion-induced convulsions: preclinical evaluation of antiepileptic drugs.

    abstract::Bupropion, a unique, non-nicotine smoking cessation aid and an effective antidepressant, is well known to produce seizures following overdosing in humans. However, the experimental background for the usefulness of antiepileptic drugs in the protection against bupropion-induced convulsions has not been established yet....

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2005.01.006

    authors: Tutka P,Mróz T,Klucha K,Piekarczyk M,Wielosz M

    更新日期:2005-03-01 00:00:00

  • A novel mutation of the nicotinic acetylcholine receptor gene CHRNA4 in sporadic nocturnal frontal lobe epilepsy.

    abstract:SUMMARY:Autosomal dominant nocturnal frontal lobe epilepsy (ADNFLE) is known to be partly caused by mutations in the transmembrane domain (TM) 1-3 of the genes of the neuronal nicotinic acetylcholine receptor (nAChR) alpha4-subunit (CHRNA4), beta2-subunit (CHRNB2) and alpha2-subunit (CHRNA2). The more common cases of s...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2008.10.009

    authors: Chen Y,Wu L,Fang Y,He Z,Peng B,Shen Y,Xu Q

    更新日期:2009-02-01 00:00:00

  • Glioneuronal tumors and medically intractable epilepsy: a clinical study with long-term follow-up of seizure outcome after surgery.

    abstract::The present study intends to identify factors that predict postoperative clinical outcome in patients with gangliogliomas (GG) and dysembryoplastic neuroepithelial tumors (DNT). We evaluated the medical records of 45 patients with GG and 13 patients with DNT, treated surgically between 1985 and 1995. We assessed sever...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/s0920-1211(00)00208-4

    authors: Aronica E,Leenstra S,van Veelen CW,van Rijen PC,Hulsebos TJ,Tersmette AC,Yankaya B,Troost D

    更新日期:2001-03-01 00:00:00

  • Unprovoked seizures in multiple sclerosis and systemic lupus erythematosus: a population-based case-control study.

    abstract::To study the risk of developing unprovoked seizures among patients with multiple sclerosis (MS) and systemic lupus erythematosus (SLE), we used 1885 new onset seizure cases, 15,080 controls and defined exposure as a hospital discharge diagnosis of MS or SLE. The odds ratio with 95% confidence interval was 3.7 (CI 1.2-...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2012.04.005

    authors: Adelöw C,Andersson T,Ahlbom A,Tomson T

    更新日期:2012-09-01 00:00:00

  • LPDs - «Linked to penumbra» discharges or EEG correlate of excitotoxicity: A review based hypothesis.

    abstract::Periodic lateralized epileptiform discharges (PLEDs) or lateralized periodic discharges (LPDs) are a well-known variant of pathological EEG activity. However, the mechanisms underpinning the appearance of this pattern are not completely understood. The heterogeneity of the features derived from LPDs patterns, and the ...

    journal_title:Epilepsy research

    pub_type: 杂志文章,评审

    doi:10.1016/j.eplepsyres.2020.106429

    authors: Chegodaev D,Pavlova NV,Pavlova P,Lvova O

    更新日期:2020-10-01 00:00:00

  • Do the epilepsies, pain syndromes, and affective disorders share common kindling-like mechanisms?

    abstract::Kindling, in the classical sense, involves progressively increasing responsivity to the intermittent repetition of the same 1-s subthreshold electrical stimulation over time, with the amygdala being the area most frequently studied. Such repeated subthreshold stimulation is associated with: lowering of the after-disch...

    journal_title:Epilepsy research

    pub_type: 杂志文章,评审

    doi:10.1016/s0920-1211(02)00081-5

    authors: Post RM

    更新日期:2002-06-01 00:00:00

  • Reducing overtreatment.

    abstract::Although treatment of epilepsy easily evolves into a situation of overtreatment, reversing the process can be difficult and time consuming. Benefits of reducing overtreatment may include a decrease in side effects, better seizure control, a simplification in the medication regimen, improved compliance, and reduced cos...

    journal_title:Epilepsy research

    pub_type: 杂志文章,评审

    doi:10.1016/s0920-1211(02)00185-7

    authors: Bourgeois BF

    更新日期:2002-11-01 00:00:00

  • Evaluation of VPA dose and concentration effects on lamotrigine pharmacokinetics: implications for conversion to lamotrigine monotherapy.

    abstract:OBJECTIVE:Lamotrigine (LTG) is approved for monotherapy following withdrawal from enzyme-inducing antiepileptic drugs. LTG is also frequently used in combination with sodium valproate (VPA), and withdrawal to monotherapy in this setting is also frequently desirable. Given the known pharmacokinetic interaction between t...

    journal_title:Epilepsy research

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1016/j.eplepsyres.2003.09.008

    authors: Gidal BE,Sheth R,Parnell J,Maloney K,Sale M

    更新日期:2003-12-01 00:00:00

  • Increased neocortical spiking and surgical outcome after selective amygdalo-hippocampectomy.

    abstract::We studied the electrocorticogram (ECoG) before and immediately after transcortical selective amygdalo-hippocampectomy, prospectively in 13 consecutive patients and retrospectively in three others. ECoG was performed with surface and two depth electrodes inserted through T2 aimed at the amygdala and anterior hippocamp...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/0920-1211(93)90080-q

    authors: Cendes F,Dubeau F,Olivier A,Cukiert A,Andermann E,Quesney LF,Andermann F

    更新日期:1993-12-01 00:00:00

  • Carbamazepine toxicity during combination therapy with levetiracetam: a pharmacodynamic interaction.

    abstract::Levetiracetam is a novel antiepileptic drug with an unknown mechanism of action. To-date levetiracetam is not known to be associated with any clinically significant pharmacokinetic interaction. Similarly, levetiracetam has not been associated with any pharmacodynamic interactions. We present four patients with severe ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/s0920-1211(01)00309-6

    authors: Sisodiya SM,Sander JW,Patsalos PN

    更新日期:2002-02-01 00:00:00

  • Voxel-based morphometry evaluation of patients with photosensitive juvenile myoclonic epilepsy.

    abstract::We aim to investigate structural brain abnormalities in juvenile myoclonic epilepsy (JME) patients with photosensitivity (PS). Sixty JME patients, 19 (32%) of whom were photosensitive, were submitted to 1.5T magnetic resonance voxel-based morphometry (VBM). The control group (CTL) consisted of 30 sex-matched healthy v...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2009.05.016

    authors: Lin K,Jackowski AP,Carrete H Jr,de Araújo Filho GM,Silva HH,Guaranha MS,Guilhoto LM,Bressan RA,Yacubian EM

    更新日期:2009-10-01 00:00:00

  • Acute vagus nerve stimulation does not suppress spike and wave discharges in genetic absence epilepsy rats from Strasbourg.

    abstract::We evaluated the efficacy of vagus nerve stimulation (VNS) in Genetic Absence Epilepsy Rats from Strasbourg (GAERS), a validated model for absence epilepsy. In the first experiment, we investigated whether VNS applied at seizure onset can interrupt spike and wave discharges (SWD). In the second experiment, we investig...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2004.04.005

    authors: Dedeurwaerdere S,Vonck K,Claeys P,Van Hese P,D'Havé M,Grisar T,Naritoku D,Boon P

    更新日期:2004-04-01 00:00:00

  • Cerebrospinal fluid findings in non-infectious status epilepticus.

    abstract:OBJECTIVE:Ictal activity itself can cause pathological cerebrospinal fluid (CSF) findings. However, data regarding pathological CSF findings caused by SE itself to date remain scarce. We here evaluated the frequency and specificity of pathological CSF findings in non-infectious SE. METHODS:We performed a retrospective...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2017.12.008

    authors: Malter MP,Choi S,Fink GR

    更新日期:2018-02-01 00:00:00

  • Scopolamine-induced convulsions in fasted animals after food intake: sensitivity of C57BL/6J mice and Sprague-Dawley rats.

    abstract::Food intake triggers convulsions in fasted BALB/c mice and Wistar albino rats treated with antimuscarinic drugs, scopolamine or atropine. Inbred strain studies have yielded considerable information regarding genetic influences on seizure susceptibility and factors contribute to epileptogenesis in rodents. This study, ...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2015.03.001

    authors: Enginar N,Nurten A,Türkmen AZ,Çağla B

    更新日期:2015-05-01 00:00:00

  • The ketogenic diet does not alter brain expression of orexigenic neuropeptides.

    abstract::Neuropeptide Y (NPY) and galanin are neuropeptides that are regulated by energy states and are also anticonvulsant. We tested the hypothesis that the anticonvulsant efficacy of the ketogenic diet (KD) is mediated by increased expression of NPY and galanin via alterations in food intake and energy metabolism. In situ h...

    journal_title:Epilepsy research

    pub_type: 杂志文章

    doi:10.1016/j.eplepsyres.2004.08.002

    authors: Tabb K,Szot P,White SS,Liles LC,Weinshenker D

    更新日期:2004-11-01 00:00:00