We tested the effects of 8-cyclopentyl-1,3 dimethylxanthine (8-CPT) on electrically induced seizures in rats. 8-CPT prolonged secondary seizures and converted partial seizures into generalized motor seizures, but did not affect primary seizure duration. Because 8-CPT is a potent and specific
Adenosine agonists or low doses of morphine exert anti-convulsant effects in different models of seizures. On the other hand, a tight interaction has been reported between morphine and adenosine in various paradigms. This study investigated the effect of the interaction of adenosine and morphine on
This study examines the anticonvulsant profile of interactions between 2-chloro-N6-cyclopentyladenosine (CCPA, a selective adenosine A1 receptor agonist) and four conventional antiepileptic drugs (AEDs: carbamazepine--CBZ, phenobarbital, phenytoin and valproate) in the mouse maximal electroshock
Adenosine has anticonvulsant effects in various models of seizures. Alpha-2 adrenoceptors have also demonstrated different effects in different models of epilepsy. In this study, the role of alpha-2 adrenoceptors in the anticonvulsant effects of adenosine in mice was determined according to the
Caffeine (1,3,7-trimethylxanthine) and theophylline (1,3-dimethylxanthine) are used for therapeutic purposes and can cause life-threatening convulsive seizures due to systemic toxicity. The mechanisms for the epileptogenicity of caffeine and theophylline are not clear. TWIK-related K(+) channels
The effect of a selective adenosine antagonist, 8-cyclopentyl 1,3-dimethylxanthine (8-CPT) was used to examine involvement of adenosine in ictal and postictal events in rats subjected to maximal electroshock (MES). MES induces the ictal event of hindlimb tonic extension (HLTE) followed by postictal
Adenosine exerts its anticonvulsants effect through different brain regions including piriform cortex. In this study, the effect of amygdala kindled seizures on adenosine A1 receptor-mediated neuromodulation in piriform cortex pyramidal neurons was tested at 24 h and 1 month after kindling. Animals
2-Chloroadenosine (0.25-1 mg/kg) significantly raised the threshold for electroconvulsions in mice. This preferential adenosine A(1) receptor agonist (at 0.125 mg/kg) significantly potentiated the protective activity of carbamazepine against maximal electroshock-induced seizures in mice.
The effect of pyrrolidine dithiocarbamate (PDTC) on kainate (KA)-induced neurotoxicity was examined in Sprague-Dawley rats. At 10 mg/kg, i.p., KA produced seizures accompanied by neuronal loss in the hippocampus and increased levels of malondialdehyde (MDA) and protein carbonyl. Pretreatment with
Syntheses and physicochemical properties of N-cycloalkyl-substituted imidazo-, pyrimido- and 1,3-diazepino[2,1-f]purinediones are described. These derivatives were synthesized by cyclization of 7-halogenoalkyl-8-bromo-1,3-dimethylxanthine derivatives with aminocycloalkanes. The obtained compounds
APNEA [(N(6)-2-(4-aminophenyl)ethyl-adenosine; a non-selective adenosine A(3) receptor agonist; 2-4 mgkg(-1)] had no significant effect on seizure parameters (seizure severity, seizure duration and afterdischarge duration) in amygdala-kindled rats. Subsequently, APNEA was combined with antiepileptic
Introduction: In this study, the role of A1 adenosine receptors in improving the effect of Low-Frequency Electrical Stimulation (LFS) on seizure-induced hyperexcitability of hippocampal CA1 pyramidal neurons was investigated.
The pro- and anticonvulsive properties of selective adenosine A1 and A2 receptor agonists and antagonists were investigated in mice using seizure models involving a specific blockade of adenosine A1 and A2 receptors, modulation of the gamma-aminobutyric acid/benzodiazepine receptor complex or
The behavioural and electrocorticographic (ECoG) convulsant effects of several xanthine derivatives injected intraperitoneally (i.p.) were studied in genetically-epilepsy prone rats. The aim of the study was to evaluate the relationship among convulsant potency, molecular structure and lipophilicity
Nitric oxide (NO) promotes adenosine release in the striatum and hippocampus. Behavioral effects of the nitric oxide donor sodium nitroprusside were studied in mice and included an examination of spontaneous locomotion and catalepsy, which are behaviors modulated by adenosine. Sodium nitroprusside
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