Abstract：
:Previous investigations in seizure-prone mice have suggested that an abnormally elevated production of the astrocyte-derived neuroexcitant, quinolinic acid (QUIN), plays a role in seizure susceptibility. In order to evaluate further the role of QUIN metabolism in genetic murine seizure models, the activities of its biosynthetic enzyme 3-hydroxyanthranilic acid oxygenase (3HAO), and of two other astrocytic enzymes, kynurenine aminotransferase (KAT) and glutamine synthetase (GS), were measured in the brains of seizure-prone EL and DBA/2 mice and two non-epileptic strains (BALB/c and Swiss-Webster). 3HAO activity was found to be markedly higher in both EL and DBA/2 mice than in the non-epileptic strains in all brain regions examined. The activity of 3HAO was not modified by the tossing procedure employed to promote seizures in EL mice. While some strain differences were noted in the activities of KAT and GS, these enzymes did not distinguish seizure-prone from the non-epileptic mice. In order to delineate better the relationship between glial activation and 3HAO, KAT and GS, further studies were performed in the ibotenate-lesioned hippocampus. In mice (but not in rats), the activity of 3HAO was selectively increased in gliotic tissue. These data demonstrate substantial species and strain differences in astroglial enzymes and in their response to brain injury. The observation of widespread abnormally high 3HAO activity in two distinct seizure-prone mouse strains strengthens the hypothesis that enhanced production of QUIN contributes to seizure susceptibility in mice.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Eastman CL,Urbańska EM,Chapman AG,Schwarcz Rdoi
10.1016/0920-1211(94)90039-6subject
Has Abstractpub_date
1994-07-01 00:00:00pages
185-94issue
3eissn
0920-1211issn
1872-6844pii
0920-1211(94)90039-6journal_volume
18pub_type
杂志文章abstract：:Mutations in genes encoding ion channels in brain neurons have been identified in various epilepsy syndromes. In neuronal networks, "gain-of-function" of channels in excitatory neurotransmission could lead to hyper-excitation while "loss-of-function" in inhibitory transmission impairs neuronal inhibitory system, both ...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/j.eplepsyres.2005.12.007
更新日期：2006-08-01 00:00:00
abstract：PURPOSE:We retrospectively analyzed the seizure characteristics, EEG pattern, treatment, and outcome in a series of patients with self-limited epilepsy with centrotemporal spikes (SLECTS) who presented with unusual clinical manifestations. METHOD:A retrospective, descriptive, multicenter study was conducted evaluating...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106507
更新日期：2021-01-01 00:00:00
abstract：:An intravenous formulation of carbamazepine (CBZ) was administered to 113 (60 male; 53 female) persons with epilepsy aged 19-87 years. Subjects received 100mg of study drug as replacement for 100mg of their usual morning dose of CBZ. There were no significant changes in blood pressure or heart rate suggesting that thi...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.01.013
更新日期：2009-04-01 00:00:00
abstract：:To further elucidate the inheritance pattern and range of phenotypic manifestations of benign familial temporal lobe epilepsy (FTLE), we report a large family recently identified in southern Italy. There were 8 patients (4 men), ranging in age from 31 to 68 years in three generations. One affected patient was deceased...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(99)00080-7
更新日期：2000-02-01 00:00:00
abstract：PURPOSE:Indoleamine 2,3-dioxygenase (IDO) is a cytokine-inducible enzyme that participates in tryptophan (trp) and serotonin metabolism with an ability to modulate neuroinflammation. Several recent studies have shown associations between cytokines and epilepsy. In this study we investigated whether activation of IDO is...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2011.02.003
更新日期：2011-05-01 00:00:00
abstract：PURPOSE:The stringent dichotomy between focal and generalized epilepsies has become a contentious issue, since neuropathological studies as well as structural and functional imaging data hypothesized the existence of focal brain abnormalities in patients with well-documented idiopathic generalized epilepsy. The aim of ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(02)00084-0
更新日期：2002-08-01 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：: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
更新日期：1991-07-01 00:00:00
abstract：:Temporal lobe epilepsy (TLE) has been modeled in mice using pilocarpine induction, with variable results depending on specific strains. To allow efficient xenotransplantation for the purpose of optimizing potential cell-based therapy of human TLE, we have determined the optimal dosing strategy to produce spontaneous r...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.10.016
更新日期：2015-01-01 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：:The purpose of this study was to determine the influence of levetiracetam on the steady-state serum concentrations of other commonly used antiepileptic drugs (AEDs). Serum AED concentrations were measured at baseline and after adjunctive therapy with levetiracetam (1000-4000 mg/day) or placebo in four phase III trials...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章,meta分析,随机对照试验
doi：10.1016/j.eplepsyres.2005.01.005
更新日期：2005-03-01 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：: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：:The parameters of pentylenetetrazol (PTZ)-induced seizures have been evaluated at various time intervals after lipopolysaccharide (LPS; Escherichia coli O111:B4, 100 microg/kg, i.p.) administration in mice. A proconvulsant effect occurred 4h after LPS injection with decreased seizure latency and enhanced seizure inten...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2006.06.009
更新日期：2006-10-01 00:00:00
abstract：:Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels have been implicated in the pathogenesis of epilepsy and consequently as targets for anticonvulsant drugs. Consistent with this, broad-spectrum block of HCN-mediated current (Ih) reduces seizure susceptibility in a variety of epilepsy models. However, ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106484
更新日期：2020-12-01 00:00:00
abstract：:Infantile spasms (IS) is a devastating epilepsy syndrome treated with adrenocorticotropic hormone (ACTH). To demonstrate the effects of adrenal dysfunction, adrenalectomy (ADX) and N-methyl-d-aspartate (NMDA)-induced rat model studies of IS were performed. The latency of the seizure in the ADX group decreased and the ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2012.02.001
更新日期：2012-06-01 00:00:00
abstract：:The aim of this study was to assess the anticonvulsant effect of carbon dioxide (CO2) on Scn1a mutation-related febrile seizures. We examined physiological changes in the blood gas levels after the induction of hyperthermia-induced seizures (HISs), which were associated with the Scn1a missense mutation. We determined ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2013.01.003
更新日期：2013-07-01 00:00:00
abstract：:Inflammatory mechanisms are involved in the pathogenesis of epilepsy. Vice versa, immune functions are regulated by the brain. We measured postictal changes in serum levels of the immuno-modulating cytokines IL-1beta, IL-6 and TNFalpha in patients with well-defined temporal lobe epilepsy (TLE) and determined modifying...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2009.05.009
更新日期：2009-09-01 00:00:00
abstract：BACKGROUND:Due to pharmacoresistant seizures and the underutilization of surgical treatments, a large number of temporal lobe epilepsy (TLE) patients experience seizures for years or decades. The goal of this study was to generate a predictive model of duration of disease with the least number of parameters possible in...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.12.006
更新日期：2015-02-01 00:00:00
abstract：:Severe paediatric epilepsies such as CDKL5 Deficiency Disorder (CDD) are extremely debilitating, largely due to the early-onset and refractory nature of the seizures. Existing treatment options are often ineffective and associated with a host of adverse effects, causing those that are affected to seek alternative trea...
journal_title：Epilepsy research
pub_type： 杂志文章,评审
doi：10.1016/j.eplepsyres.2019.02.001
更新日期：2019-03-01 00:00:00
abstract：OBJECTIVE:In Rasmussen syndrome (RS), in addition to the predominant involvement of cytotoxic T cells, heterogeneous autoantibodies against neural molecules are also found, but their function has not been elucidated. We examined antibodies to N-methyl-d-aspartate (NMDA) type glutamate receptor (GluR) subunits (GluN2B &...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2015.03.004
更新日期：2015-07-01 00:00:00
abstract：PURPOSE:Our objective was to propose a new on demand non-human primate model of mesial temporal lobe seizures suitable for pre-clinical innovative therapeutic research. METHODS:Five macaques were stereotaxically implanted unilaterally with a deep recording electrode in the hippocampus. For each experiment, penicillin ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2018.03.008
更新日期：2018-05-01 00:00:00
abstract：OBJECTIVE:Aphasic status epilepticus (ASE), although rare, may often remain underdiagnosed. We aimed to report the patients diagnosed with ASE and describe their clinical presentation, etiology, electrophysiological findings, neuroimaging, treatment options, and outcome. METHODS:We retrospectively analyzed a series of...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2020.106479
更新日期：2020-11-01 00:00:00
abstract：BACKGROUND:Idiopathic epilepsy (IE) is a syndrome that comprises epilepsy only, with no underlying structural brain lesion or other neurological signs or symptoms. Numerous studies have shown that genetic factors play an important role in IE. IE is a common disease in the Chinese Han population. However, the genetic ep...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2011.09.013
更新日期：2012-02-01 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：PURPOSE:The present study aims to determine the initialization and propagation of typical absence seizures using magnetoencephalography (MEG). METHOD:Fourteen drug-naïve children with childhood absence epilepsy (CAE) were studied using a 275-Channel MEG system. The spectral signatures of epileptic activity were assess...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/j.eplepsyres.2014.01.006
更新日期：2014-03-01 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
abstract：:Traumatic brain injury (TBI) is a leading cause of symptomatic epilepsy in young adults. This study examined physiological and anatomical epileptogenic consequences of a prior incident of TBI in rats. Rats were subjected to a fluid percussion brain injury one week prior to experimentation, and in vitro electrophysiolo...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(96)00044-7
更新日期：1996-12-01 00:00:00
abstract：:The new antiepileptic drug zonisamide was evaluated in a European multicenter parallel-group double-blind trial as add-on treatment for 139 patients with refractory partial epilepsy. During treatment with zonisamide complex partial seizures decreased by 27.7% compared to placebo (P < 0.05) and the median rate dropped ...
journal_title：Epilepsy research
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0920-1211(93)90011-u
更新日期：1993-05-01 00:00:00
abstract：:The limbic/mesial temporal lobe epilepsy syndrome has been defined as a focal epilepsy, with the implication that there is a well defined focus of onset, traditionally centered around the hippocampus. The pathology of the hippocampus in this syndrome has been well described and a number of physiological abnormalities ...
journal_title：Epilepsy research
pub_type： 杂志文章
doi：10.1016/s0920-1211(98)00051-5
更新日期：1998-09-01 00:00:00
