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7-Nitroindazole, but not NG-nitro-L-arginine, enhances the anticonvulsant activity of pregabalin in the mouse maximal electroshock-induced seizure model.
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The objective of this study was to determine the effects of 7-nitroindazole (7NI--a preferential neuronal nitric oxide synthase (NOS) inhibitor) and NG-nitro-L-arginine (NNA--a non-selective NOS inhibitor) on the anticonvulsant action of pregabalin (PGB--a third-generation antiepileptic drug) in the
Effects of L-arginine on picrotoxin-induced increase in brain ammonia concentrations and convulsions in rats.
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The effect of L-arginine (840 mg/kg) pre- (30 min before challenge) and post-treatment (5 min after challenge) period was tested on picrotoxin-induced increase in ammonia concentrations in brain regions (cerebral cortex, brain stem and cerebellum) and the accompanying convulsive responses in adult
Independent and combined effects of L-arginine and diazepam on ammonium chloride-induced convulsions in rats.
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The independent and combined effects of L-arginine (840 mg/kg) and diazepam (0.75 mg/kg) pretreatment (30 min) were tested on ammonium chloride (400 mg/kg)-induced convulsions in rats. Ammonia concentrations were determined in blood and brain regions (cerebral cortex, brain stem and cerebellum) 30
Evidence for an involvement of nitric oxide and gamma aminobutyric acid in the anticonvulsant action of L-arginine on picrotoxin-induced convulsions in rats.
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Five, 30, and 60 min pretreatment of 1000 mg/kg and not 500 mg/kg of L-arginine inhibited convulsions induced by picrotoxin. The concentrations of nitric oxide (NO) and gamma aminobutyric acid (GABA) were increased in the brain 5, 30, and 60 min after administration of 1000 mg/kg and not 500 mg/kg
Evidence for an involvement of the ammonia-decreasing action of L-arginine in suppressing picrotoxin-induced convulsions in rats and its additive action with diazepam.
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The effects of pre- (30 min before challenge) and post-treatment (5 min after challenge) of L-arginine (840 mg kg(-1)) were tested on picrotoxin-induced increase in ammonia concentrations in brain regions (cerebral cortex, brain stem and cerebellum) and the accompanying convulsive responses in adult
Evidence for the involvement of L-citrulline but not nitric oxide in the proconvulsant action of the precursor L-arginine on picrotoxin-induced convulsions in rats.
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To determine the role of the metabolites of L-arginine in its actions on picrotoxin-induced convulsions in rats, the concentrations of nitric oxide (NO) and L-citrulline were measured in the brain 30 and 60 min after the administration of L-arginine (1000 and 2000 mg/kg) or of N-nitro-L-arginine
The effect of N-nitro-L-arginine methyl ester posttreatment on the anticonvulsant effect of phenobarbitone and diazepam on picrotoxin-induced convulsions in rats.
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The present study has investigated the effect of posttreatment of the nonspecific inhibitor of nitric oxide (NO) synthase (NOS), N-nitro-L-arginine methyl ester (L-NAME), on the anticonvulsant effect of phenobarbitone and diazepam on picrotoxin-induced convulsions in rats. Phenobarbitone, which is
NG-nitro-L-arginine differentially affects glutamate- or kainate-induced seizures.
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The effects of nitric oxide (NO) synthase inhibitor, NG-nitro-L-arginine (NNA) on seizures induced by excitatory amino acids, bicuculline, pentylenetetrazol and pilocarpine were studied in mice. NNA (10 and 40 mg kg-1, i.p.) enhanced the susceptibility to intracerebroventricular (i.c.v.) kainate
Influence of NG-nitro-L-arginine methyl ester on clinical and biochemical effects of methylene blue in pentylenetetrazole-evoked convulsions.
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OBJECTIVE
Despite years of research in a number of experimental models the question whether nitric oxide (NO) and methylene blue (MB) have pro- or anticonvulsant effects remains to be fully resolved. Methods. In adult Wistar rats the influence of a nonselective inhibitor of nitric oxide synthase
Effect of NG-nitro-L-arginine on the anticonvulsant action of four second-generation antiepileptic drugs in pentetrazole-induced clonic seizures in mice.
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The exact role of compounds modulating nitric oxide (NO) content in the brain during seizure phenomena is under intensive investigation. This study was aimed at determining the effect of NG-nitro-L-arginine (L-NA; a non-selective NO synthase inhibitor) on the anticonvulsant activity of four
Influence of NG-nitro-L-arginine on the anticonvulsant and acute adverse effects of some newer antiepileptic drugs in the maximal electroshock-induced seizures and chimney test in mice.
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Overwhelming evidence indicates that nitric oxide (NO) plays an important role in epileptogenesis and seizure activity in the brain. The results of experimental studies on animals provide, however, discrepant information reporting that NO has both anti- and pro-convulsant action in the brain. The
Effects of 7-nitroindazole, NG-nitro-L-arginine, and D-CPPene on harmaline-induced postural tremor, N-methyl-D-aspartate-induced seizures, and lisuride-induced rotations in rats with nigral 6-hydroxydopamine lesions.
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The present behavioral study was undertaken to investigate whether neuronal nitric oxide (NO) synthase mediates the abnormal consequences of increased NMDA receptor-mediated synaptic transmission in models of postural tremor, Parkinson's disease and epilepsy. We used 7-nitroindazole, a selective
Protective effect of NG-nitro-L-arginine (N5-[imino(nitroamino)methyl]-L-ornithine) against cyanide-induced convulsions in mice.
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The effects of NG-nitro-L-arginine (NNA; an inhibitor of the oxidative L-arginine pathway) on convulsions induced by cyanide were investigated in mice. NNA prevented cyanide-induced convulsions in a dose-dependent manner. Furthermore, the inhibitory effect against convulsions induced by cyanide with
Systemic administration of N omega-nitro-L-arginine methyl ester and indomethacin reduces the elevation of brain PGE2 content and prevents seizures and hippocampal damage evoked by LiCl and tacrine in rat.
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Administration of tacrine (5 mg/kg i.p.), an anticholinesterase agent, in rats pretreated (24 h beforehand) with lithium chloride (LiCl; 12 mEq/kg i.p.) enhances the expression of neuronal nitric oxide (NO) synthase (NOS), increases NO, and causes seizures and hippocampal damage. Here we report
Arginine vasopressin in the pathogenesis of febrile convulsion and temporal lobe epilepsy.
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We aimed to investigate the possible convulsant action of arginine vasopressin (AVP) in both a febrile convulsion model in rat pups and a temporal lobe epilepsy model in adult rats and to define the receptor type which mediates this effect. In rat pups, 125 ng V2 receptor antagonist significantly
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