Abstract：
:Ketamine, a noncompetitive N-methyl-D-aspartate receptor (NMDAR) antagonist, used as an anesthetic has been reported to induce seizures both in humans and baboons predisposed to epilepsy. In this study, we aimed to characterize the acute effects of ketamine on scalp (sc-EEG) and intracranial EEG (ic-EEG) in the baboon, which offers a natural model of genetic generalized epilepsy (GGE). We evaluated the electroclinical response to ketamine in three epileptic baboons. The raw EEG data were analyzed within 10 min of intramuscular ketamine (5-6 mg/kg) administration. Earliest EEG changes occurred after 30 s in sc-EEG and after 15 s in ic-EEG of ketamine administration. These initial changes involved increased paroxysmal fast activity (PFA) followed by slowing, the latter emerging first occipitally, and then spreading more anteriorly. Generalized spike-and-wave discharges (GSWDs) were evident on both sc-EEG and ic-EEG within two minutes, but focal occipital discharges were already increased on ic-EEG after 15 s. Occipital slowing emerged on ic-EEG after 30 s, before spreading fronto-centrally and orbito-frontally. By 60-120 seconds post-injection, ic-EEG demonstrated a parieto-occipital burst suppression (BS), which was not noted on sc-EEG. Ketamine waves and seizures, especially if the latter were subclinical, also appeared earlier on ic-EEG. This study highlights the anesthetic and proconvulsant effects of ketamine originate in the occipital lobes before fronto-central regions. We speculate that NMDAR concentration difference in cortical regions, such as the occipital and frontal cortices, are mainly involved in the expression of ketamine's EEG effects, both physiological and epileptic.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Gowda S,Szabó CÁdoi
10.1016/j.eplepsyres.2019.04.008subject
Has Abstractpub_date
2019-08-01 00:00:00pages
50-54eissn
0920-1211issn
1872-6844pii
S0920-1211(18)30512-6journal_volume
154pub_type
杂志文章abstract：:Daily treatment of mice with diazepam leads to the development of tolerance to the anxiolytic and anticonvulsant effect of the benzodiazepine, while daily treatment with the proconvulsant benzodiazepine receptor inverse agonist FG 7142 produces sensitization to its effects in that seizures develop (chemical kindling)....
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(88)90016-2
更新日期：1988-07-01 00:00:00
abstract：:Interruption of neurogenesis and/or neuronal migration produces brain dysplasia modifying susceptibility to epileptic seizures in adulthood. The course of neurogenesis has a strictly defined time-table. Consequently, the developmental stage at which the interruption occurs determines what functional subsystem potentia...
journal_title：Epilepsy research
pub_type： 杂志文章
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更新日期：2005-12-01 00:00:00
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journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(93)90080-q
更新日期：1993-12-01 00:00:00
abstract：:Oxcarbazepine (OXC) is considered to be a promising new antiepileptic drug with similar efficacy and better tolerability compared to carbamazepine (CBZ). However, hyponatremia is supposed to occur even more often than with CBZ. We report on a patient who developed hyponatremic coma under OXC with a serum sodium level ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(92)90023-m
更新日期：1992-03-01 00:00:00
abstract：:In the present study, L-pGlu-(1-benzyl)-L-His-L-ProNH(2) (NP-355), a newer CNS active thyrotropin-releasing hormone (TRH) analog was evaluated for its antiepileptic potential. NP-355 (5, 10 and 20 micromol/kg; i.v.) pretreatment significantly delayed onset and reduced the frequency of convulsions in pentylenetetrazole...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.09.007
更新日期：2009-12-01 00:00:00
abstract：:Twenty-one children (11 boys, 10 girls) suffering from visual seizures were studied. The visual seizures manifested as loss of vision, flickering light, blurring or figurative hallucinations. Ictal EEGs during visual seizures were recorded in 4 cases; the ictal discharges all originated in the occipital area. Visual s...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(87)90032-5
更新日期：1987-07-01 00:00:00
abstract：:The aim of the study was to compare subjective complaints of epilepsy patients with objective results of neuropsychological assessment and to investigate the possible influence of depression on self-reported complaints. 62 patients from the neurology clinic were included in the study. They were asked to fill the subje...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.02.006
更新日期：2009-04-01 00:00:00
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
更新日期：2011-01-01 00:00:00
abstract：:In a selected group of temporal lobe epilepsy patients with seizures refractory to pharmacological treatment, pharmacological seizure control can be attained by surgical resection of the epileptic zone. We investigated to what extent pharmaco-resistance is reflected in a reduced response at the cellular level, in neur...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(98)00061-8
更新日期：1998-09-01 00:00:00
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
更新日期：2014-12-01 00:00:00
abstract：:Benzodiazepines (BDZs) are GABA(A) receptor modulators with anxiolytic, hypnotic, and anticonvulsant properties. BDZs are understood to potentiate GABA(A) receptor function by increasing channel opening frequency, in contrast to barbiturates, which increase channel open duration. However, the in vitro evidence demonst...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.03.007
更新日期：2009-08-01 00:00:00
abstract：BACKGROUND:Treatment of paediatric epilepsy has advanced with the development of new antiepileptic drugs (AEDs). There are few data for Germany to which extent new AEDs are used in the treatment of childhood epilepsy. AIMS:To characterise utilisation of antiepileptics in children and adolescents with a specific emphas...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2012.06.008
更新日期：2013-01-01 00:00:00
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
更新日期：2017-02-01 00:00:00
abstract：:Brain glucose transport is dependent on glucose transporter 1 (GLUT1), encoded by the solute carrier family 2 member 1 (SLC2A1) gene. Mutations in SLC2A1 cause GLUT1 deficiency which is characterized by a broad spectrum of neurological phenotypes including generalized epilepsy, motor disorders, developmental delay and...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.04.007
更新日期：2017-07-01 00:00:00
abstract：OBJECTIVE:to determine the feasibility as well as the attitudes among caregivers of children and adolescents with epilepsy in China towards the use of smart phone applications (apps) for the management of seizures. METHODS:The caregivers of children and adolescents with epilepsy, ages ranging from 0 to 15 years, were ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2016.08.002
更新日期：2016-11-01 00:00:00
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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：:A combination of temporo-limbic hyperperfusion and extratemporal hypoperfusion was observed during complex partial seizures (CPS) in temporal lobe epilepsy (TLE). To investigate the clinical correlate of perfusion changes in TLE, we analyzed focal seizures of increasing severity using voxel-based analysis of ictal SPE...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.03.020
更新日期：2009-08-01 00:00:00
abstract：:We have reported long-term clinical follow-up for two siblings with Lafora disease, a brother and sister, one of whom autopsied. Both siblings had repeated attacks of severe myoclonus, tonic and tonic-clonic convulsions, and intractable status epilepticus. The addition of orally administered zonisamide brought about s...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(01)00282-0
更新日期：2001-09-01 00:00:00
abstract：:Generalized epilepsy with febrile seizures plus (GEFS+) comprises a group of clinically and genetically heterogeneous epilepsy syndrome. Here, we provide the first report of clinical presentation and mutational analysis of SCN1A gene in 36 Malaysian GEFS+ patients. Mutational analysis of SCN1A gene revealed twenty sev...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2012.08.004
更新日期：2012-12-01 00:00:00
abstract：BACKGROUND:Large administrative databases may prove useful to assess epilepsy-related comorbidity and mortality. Despite their increased use, their validity as data source in epilepsy is yet under-ascertained. METHODS:Achmea is a large Dutch health insurance company covering about 25% of the population. We performed a...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.11.019
更新日期：2018-01-01 00:00:00
abstract：:Dapsone (4,4'-diaminodiphenyl sulfone; DDS), an established anti-leprosy drug, showed anticonvulsive effects in the amygdaloid kindling model of epilepsy. Single doses of the drug in rats (6.25-12.5 mg/kg, i.p.) suppressed the kindled seizures in a dose-dependent manner without overt behavioral toxicity. With repeated...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(91)90001-v
更新日期：1991-11-01 00:00:00
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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：: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
更新日期：2015-05-01 00:00:00
abstract：:The KCNAB1 gene is a candidate susceptibility factor for lateral temporal epilepsy (LTE) because of its functional interaction with LGI1, the gene responsible for the autosomal dominant form of LTE. We investigated association between polymorphic variants across the KCNAB1 gene and LTE. The allele and genotype frequen...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2011.01.010
更新日期：2011-03-01 00:00:00
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
更新日期：1992-12-01 00:00:00
abstract：:Triheptanoin, the triglyceride of heptanoate, is used to treat certain hereditary metabolic diseases in USA because of its anaplerotic potential. In two chronic mouse seizure models this clear tasteless oil was found to be reproducibly anticonvulsant. Here we investigated the effects of triheptanoin feeding in C3H and...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2011.12.013
更新日期：2012-05-01 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：:Early Onset Absence Epilepsy constitutes an Idiopathic Generalized Epilepsy with absences starting before the age of four years. Mutations in SLC2A1, encoding the glucose transporter, account for approximately 10% of EOAE cases. The role of SLC2A1 mutations in absence epilepsies with a later onset has not been assesse...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2012.11.004
更新日期：2013-07-01 00:00:00
abstract：:Multiple subpial transection (MST) is an effective surgical therapy for patients with intractable seizures whose epileptogenic lesions lie in the cortex and are unresectable. Morrell developed this procedure and reported clinical results obtained using it. However, only the disappearance of epileptiform discharges aft...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(95)00003-s
更新日期：1995-05-01 00:00:00
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
更新日期：2004-04-01 00:00:00
