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 (EEDs) and spontaneous epileptiform discharges (SEDs) was monitored in areas CA1, CA3, the hilus of the dentate gyrus (dentate hilus), the granule cell layer of the dentate gyrus (dentate gyrus), subiculum and entorhinal cortex. Increasing [K+]o elicited EEDs in a concentration-dependent manner. The entorhinal cortex and CA1 areas were most susceptible to this effect; the dentate gyrus was least susceptible. Increasing [K+]o also caused an increase in SEDs in all hippocampal areas. Separating entorhinal cortex from the rest of the slice by transections did not abolish discharges in any location. Lesions of the Schaeffer collaterals abolished discharges in CA1 but not in CA3. These findings demonstrate that changes in the extracellular milieu that are associated with epileptiform discharges in vivo are capable of eliciting paroxysmal discharges at multiple loci in the hippocampus and adjacent regions. Further, these findings demonstrate for the first time the intrinsic capacity of the entorhinal cortex to generate epileptiform discharges under in vitro ionic conditions known to occur in the intact brain during seizures.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Bear J,Lothman EWdoi
10.1016/0920-1211(93)90043-7subject
Has Abstractpub_date
1993-03-01 00:00:00pages
183-93issue
3eissn
0920-1211issn
1872-6844pii
0920-1211(93)90043-7journal_volume
14pub_type
杂志文章abstract：:The intracarotid amobarbital procedure (IAP) was attempted in 22 pediatric epilepsy surgery candidates, ages 5-12 years old. With extra pre-test teaching and emotional preparation, adjusted amobarbital dosage for younger patients, and simplified test items tailored to the child's abilities, language and memory testing...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(93)90061-b
更新日期：1993-07-01 00:00:00
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
更新日期：2015-07-01 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 describe the use of a population pharmacokinetic (PopPK) model incorporating weight and ontogeny to identify effective clobazam (CLB) dosing for use in a clinical trial in pediatric patients with Dravet syndrome. METHODS:Pharmacokinetic data were combined from 3 CLB trials (OV-1012, OV-1017, and study 301...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2019.106182
更新日期：2019-11-01 00:00:00
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
更新日期：2001-03-01 00:00:00
abstract：PURPOSE:The present study was undertaken to clarify the participation of the GABA-ergic system in epileptogenic activity induced by teicoplanin. METHODS:Under pentobarbital anesthesia, mice were fixed to a stereotaxic apparatus, and stainless steel electrodes were implanted into the frontal cortex (FCOR), hippocampus ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.01.006
更新日期：2009-04-01 00:00:00
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：:A randomised, double-blind, placebo-controlled crossover study of add-on remacemide hydrochloride was carried out in epilepsy patients being treated with phenytoin (PHT) monotherapy. Eleven patients were recruited, ten of whom completed the study. Plasma concentration profiles of PHT, remacemide, and its active desgly...
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(96)01005-4
更新日期：1997-01-01 00:00:00
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
更新日期：1993-12-01 00:00:00
abstract：PURPOSE:The aim of the present study is to verify whether patients with partial epilepsy receiving levetiracetam (LEV) as an add-on treatment show an improvement in cognitive function. METHODS:A neuropsychological battery of tests was administered to 35 patients with partial epilepsy before the assumption of LEV and a...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2005.10.006
更新日期：2006-03-01 00:00:00
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
更新日期：2009-02-01 00:00:00
abstract：:Controversy exists as to whether hippocampal sclerosis (HS) is a preexisting cause or a consequence of seizures. We investigated 122 consecutive patients who underwent anterior temporal lobectomy for intractable epilepsy between 1989 and 1992. MRI scans were normal apart from evidence of HS in 5 cases. The degree of H...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章
doi：10.1016/0920-1211(96)00008-3
更新日期：1996-06-01 00:00:00
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...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2019.04.008
更新日期：2019-08-01 00:00:00
abstract：:We examined the influence of seizures and carbamazepine (CBZ) on spiking rates in kindled cats. In the first experiment, spiking rates were measured before and after seizures, with and without CBZ. CBZ was administered immediately after seizures in order not to affect them. Spiking rates were measured over 9 h during ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(91)90065-n
更新日期：1991-04-01 00:00:00
abstract：:Depression is a frequent psychiatric symptom in epilepsy and has been related to epilepsy of temporal origin, especially of left-sided foci. No study differentiated the precise localization of the epileptogenic lesion within the temporal lobe. Regarding this issue, we evaluated depression assessed by the Beck Depressi...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(99)00117-5
更新日期：2000-04-01 00:00:00
abstract：:Metalloproteinase 9 (MMP9) is a member of a family of enzymes that mediate the degradation of extracellular matrix proteins, and is especially involved in blood-brain barrier maintenance. Increased levels of MMP9 have been observed in many neurological disorders, including epilepsy, suggesting it may be involved in th...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2016.11.006
更新日期：2017-01-01 00:00:00
abstract：:Surgical resection of the seizure onset zone (SOZ) requires that this region of the cortex is accurately localized. The onset of a seizure may be marked by transient discharges, but it also may be accompanied by oscillatory, sinusoidal electrographic activity, such as the EEG theta rhythm. However, because of the supe...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2018.07.006
更新日期：2018-10-01 00:00:00
abstract：INTRODUCTION:Proton magnetic resonance spectroscopy ((1)H MRS) has been proposed as a lateralizing method for the presurgical evaluation of patients with medically intractable temporal lobe epilepsy (TLE). Studies have shown correlations between temporal lobe (TL) NAA and seizure frequency, and TL NAA/Cr and the durati...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2004.06.010
更新日期：2004-12-01 00:00:00
abstract：:This was an open-label study (N01281 [NCT00419393]) assessing the long-term safety of extended-release levetiracetam (LEV XR) in patients with partial-onset seizures (POS); the study was a follow-up to a double-blind, randomized, historical controlled, multicenter, conversion to monotherapy study (N01280 [NCT00419094]...
journal_title：Epilepsy research
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.eplepsyres.2015.11.017
更新日期：2016-02-01 00:00:00
abstract：:Epilepsy affects about 1 % of the world population. Mesial temporal lobe epilepsy (mTLE) presents with seizures initiated in hippocampus and is the most frequent form of epilepsy. About 30 % of individuals with mTLE do not respond to conventional medications maintaining seizures and consequently new lesions on a daily...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106427
更新日期：2020-10-01 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
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：OBJECTIVE:Acetaminophen is one of the most commonly used analgesic and antipyretic drugs. It has been reported that acetaminophen has anticonvulsant effects in several animal models of seizure. An active metabolite of acetaminophen, AM404, inhibits the uptake of the endocannabinoid anandamide. However, the mechanism of...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2018.06.016
更新日期：2018-09-01 00:00:00
abstract：PURPOSE:We studied the effect of fosphenytoin (FOS) pre-medication on the incidence and thresholds of after-discharges (ADs), seizures, and functional responses during electrical stimulation mapping (ESM). METHODS:As individualized by the attending epileptologist, FOS was given intravenously at 2 mg-phenytoin-equivale...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2018.01.017
更新日期：2018-02-01 00:00:00
abstract：:Infantile spasms (IS) is a developmental and epileptic encephalopathy with heterogeneous etiologies including many genetic causes. Genetic studies have identified pathogenic variants in over 30 genes as causes of IS. Many of these genetic causes are extremely rare, with only one reported incidence in an individual wit...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2019.106181
更新日期：2019-10-01 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：: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
更新日期：1992-04-01 00:00:00
abstract：:Lithium is still the mainstay in the treatment of affective disorders as a mood stabilizer. Lithium also shows some anticonvulsant properties. While the underlying mechanisms of action of lithium are not yet exactly understood, we used a model of clonic seizure induced by pentylenetetrazole (PTZ) in male NMRI mice to ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2010.02.001
更新日期：2010-05-01 00:00:00
abstract：OBJECTIVES:Cryosurgery is an alternative technique for minimally invasive treatment of lesions. We have recently examined cryosurgery for epilepsy in animal models, and found that penicillin G (PG)-induced epileptiform discharges (EDs) mostly vanished after freezing. However, EDs were provoked again after insufficient ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2018.03.021
更新日期：2018-07-01 00:00:00
abstract：:Pharmacoresistant mesial temporal lobe epilepsy (mTLE) represents the major indication for epilepsy surgery. Since epilepsy surgery is an elective treatment option, preserving cognition is a high priority. Given the essential role of temporomesial structures in declarative long-term memory formation, surgical treatmen...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/j.eplepsyres.2017.08.017
更新日期：2018-05-01 00:00:00
