Abstract:
PURPOSE:Caffeine is a non-selective antagonist of A1 and A2A adenosine receptors (ARs). In this regard, nitric oxide (NO) is partly involved in the central effects of caffeine. In this study, we examined the effect of acute caffeine administration on pentylenetetrazole (PTZ)-induced seizure threshold by focusing on A1Rs, A2ARs, and NO-cGMP signaling pathway. METHODS:NMRI male mice (25-30 g) received caffeine (5, 50, and 100 mg/kg) alone, whereas 8-CPT (1 and 5 mg/kg, a selective A1Rs antagonist), SCH-442416 (5 and 10 mg/kg, a selective A2ARs antagonist) or sildenafil (5 and 10 mg/kg, a phosphodiesterase 5 inhibitor) were administrated alone or as pre-treatment before caffeine. Seizure threshold was assessed by intravenous infusion of PTZ. Nitric oxide metabolites (NOx) were measured with the Griess method. RESULTS:When administrated alone, caffeine (5 and 50 mg/kg) and 8-CPT (1 and 5 mg/kg) significantly decreased seizure threshold, while 100 mg/kg of caffeine, SCH-442416 or sildenafil did not change it. Only pre-treatment with SCH-442416 (5 and 10 mg/kg) or sildenafil (5 and 10 mg/kg) before 100 mg/kg of caffeine significantly decreased seizure threshold. Moreover, NOx levels significantly decreased following alone administration of caffeine (100 mg/kg) or 8-CPT (5 mg/kg). CONCLUSION:The results of present study showed that 5 and 50 mg/kg of caffeine had a proconvulsant effect but caffeine at a dose of 100 mg/kg had no effect on seizure threshold. In addition, it seems that the effect caffeine on seizure threshold is partly mediated through ARs or modulation of the NO-cGMP signaling pathway.
journal_name
Epilepsy Resjournal_title
Epilepsy researchauthors
Esmaili Z,Heydari Adoi
10.1016/j.eplepsyres.2018.10.013subject
Has Abstractpub_date
2019-01-01 00:00:00pages
1-8eissn
0920-1211issn
1872-6844pii
S0920-1211(18)30368-1journal_volume
149pub_type
杂志文章abstract:BACKGROUND:Diffusion tensor tractography of the anterior extent of the optic radiation - Meyer's loop - prior to temporal lobe resection (TLR) may reduce the risk for postoperative visual field defect. Currently there is no standardized way to perform tractography. OBJECTIVE:To visualize Meyer's loop using determinist...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2014.01.017
更新日期:2014-03-01 00:00:00
abstract:PURPOSE:Recent analyses provided evidence that human adult cerebrospinal fluid (CSF) in addition to soluble proteins also contains membrane particles that moreover carry the somatic stem cell marker CD133. The significance of CD133 as a potential marker of cellular proliferation, including neurogenesis, remains unresol...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2011.10.029
更新日期:2012-03-01 00:00:00
abstract::The GABAergic system has long been implicated in epilepsy with defects in GABA neurotransmission being linked to epilepsy in both experimental animal models and human syndromes (Olsen and Avoli, 1997). However, to date no human epileptic syndrome has been directly attributed to an altered GABAergic system. The observe...
journal_title:Epilepsy research
pub_type: 杂志文章,评审
doi:10.1016/s0920-1211(99)00046-7
更新日期:1999-09-01 00:00:00
abstract::Early neuropsychological changes following partial anterior callosotomy were evaluated in 15 patients with epilepsy (10 secondary generalized and 5 Lennox-Gastaut syndromes) by comparing their performances 1 month before surgery and then 15-20 and 90-100 days postoperatively without modifying the anticonvulsant treatm...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/0920-1211(90)90091-9
更新日期:1990-07-01 00:00:00
abstract:PURPOSE:To evaluate the influence of aging on the pharmacokinetics of valproic acid (VPA) at steady-state and on the susceptibility of VPA metabolism to enzyme induction by antiepileptic comedication. METHODS:The database of the therapeutic drug monitoring service of a large neurological hospital was searched to ident...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2006.04.002
更新日期:2006-08-01 00:00:00
abstract:BACKGROUND:In many parts of eastern Asia, rice is a dietary staple and therefore the ketogenic diet (KD) can be difficult to administer. The aim of this study was to assess the long-term effectiveness and tolerability of the classical KD using a 2:1 ratio of fat to protein plus net carbohydrates, which is lower than th...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2018.09.002
更新日期:2018-11-01 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:RATIONALE AND PURPOSE:Preliminary reports have suggested a possible 'aetiology-specific' efficacy of tiagabine (TGB) in patients with drug-resistant partial epilepsy (DRPE) related to cerebral glial tumors (GTs). This efficacy should be related to selective blocking of GAT-1 transporter by TGB. We presented our open-la...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/s0920-1211(02)00005-0
更新日期:2002-03-01 00:00:00
abstract::The purpose of the study was to evaluate the efficacy and safety of topiramate (TPM) as adjunctive therapy in children, adolescents and young adults with Lennox-Gastaut syndrome (LGS). We performed a prospective open label add-on study in 45 patients (age 4-34 years, mean 15.9 years) with LGS and refractory seizures. ...
journal_title:Epilepsy research
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/s0920-1211(02)00103-1
更新日期:2002-09-01 00:00:00
abstract::Post-stroke seizures occur in 5-20% of patients. Modeling of stroke-induced seizures in animals provides a useful tool for investigating the molecular basis of epileptogenesis and for developing therapies for stroke patients at increased risk for epileptogenesis. The questions addressed in the study were: (1) Do rats ...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/s0920-1211(03)00034-2
更新日期:2003-04-01 00:00:00
abstract:PURPOSE:This study aimed to evaluate the carotid artery intima-media thickness (CA-IMT) in adult patients with epilepsy and its contribution to oxidative stress and vascular risk biomarkers. METHODS:This study included 225 adult epileptic and 60 control subjects. For all, CA-IMT, fasting lipid profile (TC, TG, HDL-c a...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2007.03.010
更新日期:2007-05-01 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::The effects of systemic pretreatment with morphine sulfate (MS) on electroencephalographic (EEG) manifestations of seizures due to bicuculline (BIC) were studied in freely moving rats. Electrodes were placed on frontal and occipital cortices, into the hippocampus and into a region of the prepiriform cortex, area tempe...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/0920-1211(89)90012-0
更新日期:1989-09-01 00:00:00
abstract::Status epilepticus (SE) is a common neurological and medical emergency. Despite the significant mortality associated with SE, no human data have been available regarding cardiovascular changes prior to death in patients with this condition. This study was conducted to measure hemodynamic trends in the 24 h prior to de...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/s0920-1211(98)00031-x
更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:Benign childhood epilepsy with centro-temporal spikes (BECCT) is usually associated with anteriorly oriented rolandic discharges. We report an unusual type of childhood-onset epilepsy with sensorimotor seizures associated with posteriorly oriented rolandic discharges. METHODS:Among 942 patients who underwen...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2009.01.012
更新日期:2009-04-01 00:00:00
abstract::Results of previous studies suggested that the brainstem participates in amygdaloid (AM) kindled seizure generalization and the positive transfer effect at the secondary site AM. This study was undertaken to define the role of the brainstem in the patterning of AM kindling, the maintenance of AM kindled seizure and th...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/s0920-1211(97)00068-5
更新日期:1998-01-01 00:00:00
abstract::To assess whether epileptic children have abnormal values of some trace elements, the aim of this preliminary study was to assess the serum zinc (Zn), copper (Cu), iron (Fe), and chromium (Cr) concentrations in 23 children with initial recognition of epilepsy before beginning of pharmacological therapy in comparison w...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2012.09.009
更新日期:2013-03-01 00:00:00
abstract::Periodic lateralized epileptiform discharges (PLEDs) or lateralized periodic discharges (LPDs) are a well-known variant of pathological EEG activity. However, the mechanisms underpinning the appearance of this pattern are not completely understood. The heterogeneity of the features derived from LPDs patterns, and the ...
journal_title:Epilepsy research
pub_type: 杂志文章,评审
doi:10.1016/j.eplepsyres.2020.106429
更新日期:2020-10-01 00:00:00
abstract::The effect of magnesium-free medium on electrical and CaM kinase II activity in the rat hippocampal slice was examined. Experimental slices were incubated in 2 mM Mg, then exposed to magnesium-free medium for 1 h. Control slices were concurrently run in 2 mM Mg. Slices were then frozen and CaM kinase II activity was m...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/0920-1211(91)90054-j
更新日期:1991-09-01 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:PURPOSE:To evaluate if the duration of epilepsy influences MRI volumes of the hippocampus, amygdala, parahippocampal gyrus, entorhinal cortex and temporal pole of both hemispheres and epileptogenic hippocampus neuronal cell density and dentate gyrus granular cells distribution in patients with refractory mesial tempora...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2018.08.009
更新日期:2018-11-01 00:00:00
abstract::We hypothesized and found that the co-occurrence of migraine with aura (MA) with major depression (MD) or with suicide attempt (SA) increases the risk for developing unprovoked seizure more than these conditions alone. Number of conditions showed a linear relationship to seizure risk. This may reflect a new condition ...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2007.05.001
更新日期:2007-07-01 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: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:OBJECTIVES:to determine how the duration of SE, the EEG findings during/after SE, the depth of coma at presentation and age impact on the prognosis of convulsive status epilepticus indepedent of aetiology and to analyse the outcome of status epilepticus with respect to mortality and morbidity (the latter measured in te...
journal_title:Epilepsy research
pub_type: 杂志文章,评审
doi:10.1016/j.eplepsyres.2010.09.003
更新日期:2011-01-01 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::Understanding the relationship between seizure frequency, seizure type and scores obtained from quality of life (QOL) measures is important if the incorporation of QOL measures into epilepsy clinical trials is to become standard practice. There is also a need to consider cross-cultural differences obtained from QOL me...
journal_title:Epilepsy research
pub_type: 杂志文章,多中心研究
doi:10.1016/s0920-1211(98)00010-2
更新日期:1998-05-01 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::Ring chromosomes are rare chromosome disorders that arise usually de novo. Children with ring chromosome 6 have a wide range of intellectual functioning and congenital anomalies. We report an epileptic case of a 10-year-old boy to be mild psychomotor retardation and dysmorphic traits including microcephaly, brachyceph...
journal_title:Epilepsy research
pub_type: 杂志文章
doi:10.1016/j.eplepsyres.2008.03.020
更新日期:2008-08-01 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