Abstract：
OBJECTIVE:To clarify the clinical and neurophysiological profiles of fronto-parietal opercular epilepsy in which epileptic spikes are detected with magnetoencephalography (MEG) but not with scalp electroencephalography (EEG). METHODS:Four patients presented with epileptic spikes localized to the fronto-parietal opercular cortex, which were only appreciated following MEG recordings. RESULTS:In all cases, seizure semiology suggested early activation of the operculum and lower peri-rolandic cortex consistent with the somatotopic organization of this region, i.e. tingling sensation involving the throat and hemi-face or contralateral upper limb, and spasms of the neck and throat. MEG spikes were localized in the fronto-parietal operculum. Three of the four patients underwent invasive electrocorticography and/or stereo-EEG recordings, and spikes were confirmed to arise from the estimated area of MEG dipole localization. Two patients remained seizure-free for over 1 year after resection of the epileptogenic region; the other patient declined resective surgery due to proximity to the language cortex. CONCLUSION:This study demonstrates the usefulness of MEG in localizing spikes arising from within the fronto-parietal opercular regions, and implies that MEG may provide localizing information in patients with symptoms suggestive of opercular epilepsy, even if scalp EEG recordings fail to disclose any epileptogenic activities.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Kakisaka Y,Iwasaki M,Alexopoulos AV,Enatsu R,Jin K,Wang ZI,Mosher JC,Dubarry AS,Nair DR,Burgess RCdoi
10.1016/j.eplepsyres.2012.05.003subject
Has Abstractpub_date
2012-11-01 00:00:00pages
71-7issue
1-2eissn
0920-1211issn
1872-6844pii
S0920-1211(12)00135-0journal_volume
102pub_type
杂志文章abstract：:Use of non-vitamin K antagonist oral anticoagulants (NOACs), including dabigatran etexilate, rivaroxaban, apixaban, edoxaban or betrixaban provides a safe and convenient alternative to the traditional anticoagulation with vitamin K antagonists or heparin derivatives. Many patients receiving long-term seizure prophylax...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/j.eplepsyres.2020.106304
更新日期：2020-05-01 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：: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：OBJECTIVE:To assess functional organization of the motor cortex in patients with Unverricht-Lundborg disease (EPM1A) using a combined neurophysiologic and imaging approach. METHODS:EPM1A patients underwent transcranial magnetic stimulation (TMS)-based cortical mapping of the motor hand area. Moreover, they performed n...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106278
更新日期：2020-02-01 00:00:00
abstract：:Several interacting genetic factors are likely to be involved in the epileptogenesis of idiopathic generalized epilepsies (IGE). Neurotransmitter transporters play a central role in the fine tuning of neurotransmission by removal of released neurotransmitters from the synaptic cleft. The present association study test...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(00)00120-0
更新日期：2000-08-01 00:00:00
abstract：:Six anticonvulsant drugs, phenytoin (PHT), carbamazepine (CBZ), valproate (VPA), U-54494A, losigamone (LOS), and D-20443, were studied using rat hippocampal slices and standard electrophysiological techniques. The K+ channel blocker, 4-aminopyridine (4-AP), was used as neuronal stimulant. The extracellular parameters ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(94)00077-a
更新日期：1995-02-01 00:00:00
abstract：BACKGROUND:GRIN-related developmental-epileptic encephalopathies are associated with a spectrum of neurodevelopmental disorders, including intellectual disability, epilepsy including continuous spike-and-wave during sleep syndrome (CSWS), or epilepsy-aphasia spectrum phenotypes such as in Landau-Kleffner syndrome. Effi...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106325
更新日期：2020-07-01 00:00:00
abstract：:Evidence-based treatment guidelines and practice parameters have been developed in most areas of medicine. They are important because insurance companies, formulary managers, and health maintenance organizations rely on guidelines for formulary and coverage decisions. The methodology for practice parameter development...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/j.eplepsyres.2005.09.021
更新日期：2006-01-01 00:00:00
abstract：:Previous work showed that bilateral lesions made between the inferior and superior colliculi reduced the severity of audiogenic seizures in genetically epilepsy-prone rats (GEPR-9s), and indicated that the connections between these two structures are vital for the propagation of seizure activity. To determine the invo...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(96)01011-x
更新日期：1997-03-01 00:00:00
abstract：:Alterations in the level of consciousness may render the interpretation of the memory test results from the intracarotid amobarbital procedure difficult. The present study was designed to investigate the impact of inattention and somnolence on memory performance during the Amytal test. Nineteen consecutive patients un...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(92)90079-9
更新日期：1992-09-01 00:00:00
abstract：OBJECTIVE:Approximately 80% of glioma patients will experience at least one seizure activity during the course of the disease, and because the etiology of glioma-related seizure is most likely multifactorial and complex, it remains poorly understood. MicroRNAs are a class of small noncoding RNAs that function as critic...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2016.08.005
更新日期：2016-11-01 00:00:00
abstract：:Glutamatergic ionotropic and metabotropic receptor modulators have been shown to produce anticonvulsant activity in a number of animal seizure models, e.g. maximal electroshock (MES) and DBA/2 sensory-induced seizures. The 6 Hz model of partial seizures is an alternative low frequency, long duration stimulation paradi...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2003.08.001
更新日期：2003-09-01 00:00:00
abstract：:A freezing probe was placed on the skull of postnatal day (PN) 1 rats to induce formation of a cerebrocortical microsulcus. Experimental studies were performed on PN days 21-24. At that time point, Nissl-stained sections revealed the presence of a microsulcus similar to that described in human dysplastic cortex. Immun...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(98)00041-2
更新日期：1998-09-01 00:00:00
abstract：:Much remains to be learned about mechanisms underlying entry into, and temporal progression of, status epilepticus (SE). This report describes a non-pharmacologic model of generalized convulsive SE in rat. Pulsed trains of suprathreshold electric current, were administered bilaterally to either of four rostral forebra...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(94)90084-1
更新日期：1994-09-01 00:00:00
abstract：:GABA transporters (GATs) are an essential element of the GABAergic system, which regulate excitability in the central nervous system and are thus used as targets for anticonvulsive therapy. However, in the immature nervous system the functions of the GABAergic system and the expression profile of GATs are distinct fro...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.11.019
更新日期：2014-02-01 00:00:00
abstract：:The ketogenic diet (KD) increased the expression of calbindin-D(28k) (CB) in the interneurons of the hippocampus compared with the normal diet (ND)-fed mice. Also, 2 days after kainic acid (KA) administration, numerous CB-expressing astrocytes were found in the KD-fed mice compared with those of the ND-fed mice. These...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2005.05.008
更新日期：2005-07-01 00:00:00
abstract：SUMMARY:Stereotactic radiofrequency amygdalohippocampectomy (AHE) has been reintroduced as an alternative treatment of mesial temporal lobe epilepsy. The aim of this study was to describe MRI changes after stereotactic AHE and to correlate the hippocampal and amygdalar volumes reduction with the clinical seizure outcom...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章
doi：10.1016/j.eplepsyres.2008.11.013
更新日期：2009-02-01 00:00:00
abstract：:Involvement of opioid systems in the pathogenesis of absence epilepsy has been postulated. However, the role of the mu opioid receptor has not been fully elucidated as yet. In the present study the role of this receptor in absence epilepsy was investigated autoradiographically and pharmacologically. The density of mu ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(97)00081-8
更新日期：1998-01-01 00:00:00
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
更新日期：2020-08-01 00:00:00
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
更新日期：1990-01-01 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：:Seizure forecasting would improve the quality of life of patients with refractory epilepsy. Although early findings were optimistic, no single feature has been found capable of individually characterizing brain dynamics during transition to seizure. Cross-frequency phase amplitude coupling has been recently proposed a...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.11.009
更新日期：2018-01-01 00:00:00
abstract：:To investigate involvement of extrafocal regions in mesial temporal lobe epilepsy (MTLE), we retrospectively explored abnormalities in distribution of iomazenil (IMZ) activity by identifying interhemispheric asymmetry on IMZ-SPECT images of patients with MTLE. Fourteen MTLE patients in whom a good surgical outcome was...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2012.07.001
更新日期：2013-02-01 00:00:00
abstract：PURPOSE:The intracarotid amytal test is commonly used as a predictor of memory dysfunctioning after anterior temporal lobe resection (ATL) for intractable epilepsy. Asymmetry in memory scores can provide focus lateralizing information. In this study the predictive value of a set of Wada test parameters was analyzed, in...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章
doi：10.1016/s0920-1211(00)00097-8
更新日期：2000-05-01 00:00:00
abstract：OBJECTIVE:Using the gamma-butyrolactone (GBL) model of absence seizures in Long-Evans rats, this study investigated if 2.5-6 Hz paroxysmal discharges (PDs) induced by GBL were synchronized among the thalamocortical system and the hippocampus, and whether inactivation of the hippocampus affected PDs. METHODS:Local fiel...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.12.007
更新日期：2016-02-01 00:00:00
abstract：PURPOSE:To study the extent and characteristics of dietary and herbal supplements use in a large cohort of adult patients with epilepsy. METHODS:This prospective study included 490 patients receiving care at a university epilepsy clinic. A number of variables, including demographics, characteristics of epilepsy and it...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2019.106168
更新日期：2019-10-01 00:00:00
abstract：AIM:This cross-sectional study examined whether growth parameters were associated with epilepsy in children living in a rural community in sub-Saharan Africa (SSA). MATERIALS AND METHODS:A cross-sectional study was performed in the Hai District Demographic Surveillance Site (HDSS), Tanzania in which 6-14 year old chil...
journal_title：Epilepsy research
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.eplepsyres.2014.06.014
更新日期：2014-10-01 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
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：:Overexpression of multidrug efflux transporters such as P-glycoprotein (Pgp; ABCB1) or multidrug resistance proteins (MRPs; ABCC) in the blood-brain barrier has recently been suggested to explain, at least in part, pharmacoresistance in epilepsy, which affects about 30% of all patients with this common brain disorder....
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2003.12.007
更新日期：2004-02-01 00:00:00
