strychnine/seizures

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Pentylenetetrazol and strychnine convulsions in brain weight selected mice.

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The seizure sensitivities to pentylenetetrazol (Ptz, 25-100 mg/kg) and strychnine (S, 2 mg/kg) were tested in two mice lines selected for large (LB) and small (SB) brain weight (brain weight difference being approximately 75 mg). The selection was based on a regression line connecting body and brain

Phenylalanine derivatives with modulating effects on human α1-glycine receptors and anticonvulsant activity in strychnine-induced seizure model in male adult rats.

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The critical role of α1-glycine receptor (α1-GLYRs) in pathological conditions such as epilepsy is well known. In the present study, structure-activity relations for a series of phenylalanine derivatives carrying selected hydrogen bond acceptors were investigated on the functional properties of

Prevention of strychnine-induced seizures and death by the N-methylated glycine derivatives betaine, dimethylglycine and sarcosine.

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Betaine (N,N,N-trimethylglycine) and N,N-dimethylglycine have been reported to have anticonvulsant properties in animals. The purpose of the present study was to determine whether these compounds can antagonize strychnine-induced seizures when administered intraperitoneally and to compare their

Strychnine poisoning as an unusual cause of convulsions.

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A fatal case of strychnine poisoning is presented. The patient vomited then suffered a series of tonic convulsions which were triggered by tactile stimulation. In between paroxysms he was initially alert. Eventually the patient became comatosed due to anoxia and had a cardiac arrest. He presented

Different postnatal development of convulsions and lethality induced by strychnine in rats.

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The convulsant action of strychnine was studied in 310 male albino rats, aged 3 to 25 days. Doses of 0.25-4 mg/kg were administered intraperitoneally and the animals were observed for 30 min. Generalized tonic-clonic seizures involving also tonic hindlimb extension occurred in all age groups. The

Voltage clamp study of cat spinal motoneurons during strychnine-induced seizures.

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Cat spinal motoneurons were examined by the technique of somatic voltage clamp during strychnine-induced spinal seizures. No clear alteration of voltage-dependent ionic currents was required in order for typical strychnine-induced paroxysmal depolarization shifts (PDSs) to develop in contrast to

THE CONTROL OF STRYCHNINE CONVULSIONS BY INTRASPINAL INJECTIONS OF MAGNESIUM SULPHATE.

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We feel that the results obtained in the human case and in our animal experiments justify the supposition that magnesium sulphate may be of use in controlling cases of poisoning by strychnine. It is a method easily available not only in large hospitals but in private practice, and requires no

Influence of aminophylline and strychnine on the protective activity of excitatory amino acid antagonists against maximal electroshock-induced convulsions in mice.

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Aminophylline reversed the protective action of both, D-3-(2-carboxypiperazine-4-yl)-1-propenyl-1-phosphonic acid (D-CPP-ene-a competitive NMDA antagonist) and valproate (used as a conventional antiepileptic drug for comparative purposes) against maximal electroshock-induced seizures. The respective

Effects of taurine, glycine and GABA on convulsions produced by strychnine in the rabbit.

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The action of intravenously injected taurine, glycine and GABA has been tested on convulsions induced by strychnine using electroencephalographic and electromyographic recordings. The dose of strychnine necessary to produce a generalized tonic-clonic seizure was 0.55 +/- 0.15 mg/kg intravenously for

Systemically administered glycine protects against strychnine convulsions, but not the behavioural effects of high pressure, in mice.

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1. The effects of intraperitoneal administration of glycine were studied on the behavioural effects of raised ambient pressure in mice, compared with the effects of such administration on the actions of chemical convulsants. 2. Glycine did not alter the onset pressures for the occurrence of tremor,

Glycine potentiates strychnine-induced convulsions: role of NMDA receptors.

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Strychnine poisoning leads to seizures that have traditionally been attributed to competitive antagonism of glycine receptors in the spinal cord. Although glycine is thought to act as an inhibitory neurotransmitter, a strychnine-insensitive glycine (Gly2) receptor has been recently described in

Sensitivity to strychnine seizures is unaltered during ethanol withdrawal.

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Previous research from this laboratory has indicated that animals chronically exposed to ethanol and then withdrawn exhibit a variety of symptoms of central nervous system hyperexcitability that occur in unique clusters. These clusters of symptoms were observed to differ in their duration and in the

7-Chlorokynurenic acid, a strychnine-insensitive glycine receptor antagonist, inhibits limbic seizure kindling.

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Electrical kindling of the rat amygdala was performed following daily intra-amygdaloid injections of the strychnine-insensitive glycine receptor antagonist 7-chlorokynurenic acid (7-CIKYN) (10 nmol), 7-CIKYN (10 nmol) plus glycine (40 nmol), or vehicle alone. Control (vehicle-treated) animals showed

Strychnine seizure potentiation by azaspirodecanedione anxiolytics in rats.

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Buspirone, gepirone and ipsaperone administered intraperitoneally (40 mg/kg) to naive rats were found to be proconvulsive for strychnine-induced seizures. The dose of strychnine required to induce seizures in 50% of test animals (CD50) was 2.18 mg/kg in naive rats, while CD50s for rats treated with

Antiseizure Effects of Ketogenic Diet on Seizures Induced with Pentylenetetrazole, 4-Aminopyridine and Strychnine in Wistar Rats.

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The ketogenic diet (KD) is a cheap and effective alternative therapy for most epilepsy. There are paucity of experimental data in Nigeria on the usefulness of KD in epilepsy models. This is likely to be responsible for the poor clinical acceptability of the diet in the country. This study therefore

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