antiparkinson/seizures

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Antiparkinsonian drugs memantine and trihexyphenidyl potentiate the anticonvulsant activity of valproate against maximal electroshock-induced seizures.

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Memantine increased the threshold for electroconvulsions, when administered at 1.0-6.0 mg/kg (i.p.) and given in subthreshold doses of 0.0156, 0.0625, 0.125 and 0.5 mg/kg (i.p.) potentiated the protective efficacy of valproate, against maximal electroshock (50 mA)-induced seizures in mice, lowering

Effects of the antiparkinsonian drug budipine on central neurotransmitter systems.

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Budipine is a novel antiparkinsonian drug which is particularly beneficial in the treatment of parkinsonian tremor. The mechanism of action of budipine is not fully understood. To study whether budipine has dopaminergic activity in vivo, we used the 6-hydroxydopamine rotational model of Parkinson's

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

Anti-nicotinic properties of anticholinergic antiparkinson drugs.

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The nature of the antagonism by anticholinergic compounds of nicotine-induced convulsion in mice has not been defined clearly. Although, because they do not compete effectively for agonist binding to brain tissue in-vitro, these compounds are thought to be non-competitive antagonists in the brain,

Antiparkinson drugs used as prophylactics for nerve agents: studies of cognitive side effects in rats.

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Antiparkinson agents possess excellent anticonvulsant properties against nerve agent-induced seizures by exerting both cholinergic and glutamatergic antagonisms. It is important, however, that drugs used as prophylactics not by themselves cause impairment of cognitive capability. The purpose of the

Effects of anticholinergic-antiparkinsonian drugs on striatal neurotransmitter levels of rats intoxicated with soman.

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Antimuscarinic drugs possessing antiparkinson activity that were effective in preventing convulsions induced by the organophosphorus cholinesterase (ChE) inhibitor soman were studied for their effects on spinal cord ChE activity and striatal levels of acetylcholine (ACh) and catecholamines in

Glutamate-dopamine interactions in the production of pilocarpine motor seizures in the mouse.

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An assortment of glutamate antagonists with differing selectivities for NMDA and AMPA-type glutamate receptors, were tested for their effects in the mouse pilocarpine model of complex partial seizures. MK 801 (0.1-0.8 mg/kg) and high doses of HA 966 (50 mg/kg) were proconvulsant, whilst CGP 40116

Myoclonus and seizures in a patient with parkinsonism: induction by levodopa and its confirmation on SEPs.

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A 68-year-old woman with parkinsonism showed cortical myoclonus and seizures under antiparkinsonian medication. Myoclonus was induced and enhanced by L-dopa, developing into generalized seizures. EEG was abnormal and somatosensory-evoked potentials (SEPs) showed giant SEPs, transcortical reflex (C

Effects of antimuscarinic antiparkinsonian drugs on brightness discrimination performance in rats.

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Biperiden (BPR) and trihexyphenidyl (THP), the current antimuscarinic drugs of choice in the management of parkinsonism, have been shown to exert anticonvulsant effects induced by poisoning by the organophosphorus compound soman. The present study was undertaken to evaluate the effects of these

The antiparkinsonian agent budipine is an N-methyl-D-aspartate antagonist.

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Budipine (1-t-butyl-4,4-diphenylpiperidine) is a novel antiparkinsonian agent. Its clinical efficacy has been proven in double-blind placebo-controlled trials. The mechanism of action of budipine, however, is unknown. Budipine selectively increased the threshold of N-methyl-D-aspartate

The AMUP study for drug surveillance in psychiatry - a summary of inpatient data.

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From 1979 to 1989 the AMUP study (AMUP = Arzneimittelüberwachung in der Psychiatrie) was conducted in two psychiatric hospitals in Germany with the aim to provide a systematic and standardized assessment of all adverse reactions to psychotropic drugs under conditions of routine practice. A total of

Stimulation of δ opioid receptor and blockade of nociceptin/orphanin FQ receptor synergistically attenuate parkinsonism.

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δ opioid peptide (DOP) receptors are considered a therapeutic target in Parkinson's disease, although the use of DOP agonists may be limited by side effects, including convulsions. To circumvent this issue, we evaluated whether blockade of nociceptin/orphanin FQ (N/OFQ) tone potentiated the

Anticonvulsant efficacy of drugs with cholinergic and/or glutamatergic antagonism microinfused into area tempestas of rats exposed to soman.

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A group of antiparkinson drugs (benactyzine, biperiden, caramiphen, procyclidine, and trihexyphenidyl) has been shown to possess both anticholinergic and antiglutamatergic properties, making these agents very well suited as anticonvulsants against nerve agents. The first purpose of this study was to

Comparison of the effects of NMDA and AMPA antagonists on the locomotor activity induced by selective D1 and D2 dopamine agonists in reserpine-treated mice.

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This study examined the interaction between various glutamate antagonists and selective D1 (SKF 38393) and D2 (RU 24213) dopamine agonists in the production of locomotion in the reserpine-treated mouse. Firstly, in normal mice, the NMDA channel blocker MK 801 (0.1-1.6 mg/kg) caused a biphasic

The differential behavioural effects of benzazepine D1 dopamine agonists with varying efficacies, co-administered with quinpirole in primate and rodent models of Parkinson's disease.

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The effects of co-administration of quinpirole with benzazepine D1 dopamine (DA) agonists possessing full/supramaximal (SKF 80723 and SKF 82958), partial (SKF 38393 and SKF 75670) and no efficacies (SKF 83959) in stimulating adenylate cyclase (AC) were investigated in rodent and primate models of

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