Abstract：
:The development of epilepsy and a progressive increase in susceptibility to seizures may involve changes in inhibitory and excitatory systems from the beginning of the process. The present study was focused to analyze the opioid peptide changes induced by a chemical sub-convulsant stimulation. Experiments were carried out to determine opioid peptide release, mu receptor binding and proenkephalin expression in rat brain, as well as nociceptive responses, following the administration of a sub-convulsant dose of pentylenetetrazol (PTZ) (30 mg/kg, i.p.). Membrane binding experiments revealed reduced number of mu binding sites (Bmax) in cortex and amygdala, but not in striatum and hippocampus, an effect that was evident only 24 h, but not 28 days, after PTZ treatment. In situ hybridization experiments suggested a significant enhancement of proenkephalin mRNA expression in specific brain regions 24 h after PTZ treatment. Microdialysis combined with a universal opioid peptide radioimmunoassay revealed extracellular opioid peptide levels to be elevated in the amygdala (137%) 90 min after PTZ administration. Evaluation of nociceptive responses using the Randall-Selitto test showed an analgesic effect short term (30-90 min) after PTZ injection. Collectively, these data provide evidence for a significant activation of opioid peptide systems as a consequence of the administration of a sub-convulsant dose of PTZ. These neurochemical changes may play an important role in the progression of epileptogenesis.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Rocha L,Cano A,Cruz C,Omaña-Zapata I,Villalobos R,Maidment NTdoi
10.1016/s0920-1211(99)00056-xsubject
Has Abstractpub_date
1999-11-01 00:00:00pages
141-50issue
2eissn
0920-1211issn
1872-6844pii
S0920-1211(99)00056-Xjournal_volume
37pub_type
杂志文章abstract：PURPOSE:The aim of this study was to evaluate volumetric proton magnetic resonance spectroscopic imaging (MRSI) for localization of epileptogenic foci in neocortical epilepsy. METHODS:Twenty-five subjects reporting seizures considered to be of neocortical origin were recruited to take part in a 3-T MR study that inclu...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.10.009
更新日期：2010-02-01 00:00:00
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
更新日期：2011-03-01 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：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：:In rats, the concurrent alternate elicitation of epileptiform activity in two forebrain structures can result in both the rapid production of severe seizures and the development of fully generalized seizures in one (dominant) site, while arresting the progress of seizure activity at intermediate stages in the other (s...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(98)00103-x
更新日期：1999-04-01 00:00:00
abstract：:Spreading depression (SD), a self-propagating wave of reversible cellular depolarization, is thought to play an important role in brain pathophysiology. SD and seizures are closely related events but little is known about involvement of SD in chronic epileptogenesis. Here we show that cortical SD is the first and high...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2006.05.014
更新日期：2006-09-01 00:00:00
abstract：:This study aimed to assess neuropsychiatric comorbidities and analyze risk factors in Chinese children with epilepsy. Children with epilepsy aged between 6 and 16 years from the Children's Hospital of Fudan University were included. Children with asthma and typically developing children were matched for age and gender...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.11.011
更新日期：2018-02-01 00:00:00
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：:Single photon emission computed tomography (SPECT) has frequently been used to investigate cerebral brain perfusion (CBP) occurring ictally and inter-ictally in epileptic patients. Several studies have addressed the multimodal analysis of the modifications occurring in cerebral areas involved in seizure activity, by c...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(00)00111-x
更新日期：2000-06-01 00:00:00
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
更新日期：1994-12-01 00:00:00
abstract：:Spontaneous recurrent seizures (SRSs) were observed in female rats following the injection of kainic acid into the dorsal hippocampus. Pregnancy and nursing decreased the frequency of SRSs in such animals. The finding of a protective effect of pregnancy and lactation in this animal model of temporal lobe epilepsy stre...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(87)90021-0
更新日期：1987-03-01 00:00:00
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 opercu...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2012.05.003
更新日期：2012-11-01 00:00:00
abstract：:The present study examined the relationship between the patterns and densities of glutamate AMPA receptor sub-units GluR1 and GluR2/3 in the molecular layer of the fascia dentata and aberrant mossy fiber neoinnervation in human and kainate rat hippocampal epilepsy. Because AMPA sub-units modulate the fast glutamate sy...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(96)00053-8
更新日期：1996-12-01 00:00:00
abstract：:It has previously been suggested that abnormalities in cardiac repolarization (QTc lengthening and shortening) are more likely to accompany seizures with hypoxemia and may be involved in sudden unexpected death in epilepsy (SUDEP). Accordingly, we evaluated for associations between peri-ictal QTc changes and hypoxemia...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.03.016
更新日期：2014-07-01 00:00:00
abstract：OBJECTIVES:Patients with epilepsy have excess morbidity and mortality due to ischemic cardiovascular disease. Many of these patients have elevated concentrations of plasma total homocysteine (Hcy), which is an acknowledged risk factor for cardiovascular disease, venous thromboembolic disease, foetal malformations and d...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2008.06.003
更新日期：2008-11-01 00:00:00
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
更新日期：2004-11-01 00:00:00
abstract：PURPOSE:Diffusion tensor imaging (DTI) provides information about magnitude (diffusivity) and directionality (anisotropy, FA) of water diffusion. We explored the characteristics of pathology-proven cortical dysplasia (CD) in the posterior quadrant in a case series of three patients using DTI measures, to assess associa...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2010.03.006
更新日期：2010-08-01 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：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
更新日期：2016-01-01 00:00:00
abstract：PURPOSE:Antiepileptic drugs (AEDs) may have adverse effects on bone metabolism and bone mineral density (BMD). The aim of this study is to determine the changes of bone metabolism and BMD in epilepsy patients who are undergoing levetiracetam (LEV) monotherapy. METHODS:Drug-naïve, sixty-one patients with recent onset e...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2012.09.002
更新日期：2013-03-01 00:00:00
abstract：:Clinical practitioners have often observed in the course of their daily work that the pain thresholds of epileptic patients seem to differ from those of healthy subjects. These patients can suffer from quite severe traumatic lesions without apparently experiencing any pain. Since they are usually under treatment for e...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(92)90092-8
更新日期：1992-06-01 00:00:00
abstract：AIM:Vitamin D (Vit D) has been considered as a neurosteroid and has a pivotal role in neuroprotection including epilepsy. Vit D regulator acts via a Vit D receptor (VDR). WAG/Rij rats have a genetically epileptic model of absence epilepsy with comorbidity of depression. The aim of the present study was to investigate t...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2019.106208
更新日期：2019-11-01 00:00:00
abstract：:The deletion of a sodium channel gene cluster located on chromosome 2q24.3 is associated with variable epilepsy phenotypes, including Dravet syndrome and migrating partial seizures of infancy. Although SCN1A is considered as the major contributor to the epilepsy phenotype, the role of other sodium channel genes that m...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.10.008
更新日期：2015-01-01 00:00:00
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 ag...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.10.009
更新日期：2014-02-01 00:00:00
abstract：:The role of the associative connections in the propagation of epileptiform discharges originating from an acute, localized epileptic focus in the anterior piriform cortex has been characterized recently in the in vitro isolated guinea-pig brain preparation. The present study demonstrates that the dorsal propagation of...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/0920-1211(96)00014-9
更新日期：1996-07-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to investigate whether there may be a correlation between the anatomical variants of Circle of Willis (CoW) and presence/laterality of mesial temporal sclerosis (MTS). METHODS:We retrospectively identified the CoW variants on Wada angiograms in 71 patients with pathologically proven...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2017.02.017
更新日期：2017-05-01 00:00:00
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
更新日期：2005-03-01 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：: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：STUDY OBJECTIVE:Non-convulsive seizures/status epilepticus occur in approximately 20% of comatose, non-cardiac arrest intensive care unit (ICU) patients, and are associated with increased mortality. The prevalence and clinical significance of seizures in comatose survivors of cardiac arrest undergoing therapeutic hypot...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.06.018
更新日期：2013-10-01 00:00:00
