picrotoxinin/seizures

Two strains of mice were shown to possess a differential sensitivity to picrotoxinin-induced convulsions; picrotoxinin elicited both tonic and clonic seizures at lower doses in the DBA/2J (DBA) strain compared to the BALB/c ByJ (BALB) strain. Less protection of picrotoxinin-induced tonic seizures

Several lines of evidence suggest that the convulsant actions of caffeine are mediated through benzodiazepine receptors. A pharmacogenetic approach has been used to further explore the relationship of these receptors to caffeine-induced seizures. The susceptibility of two inbred strains of mice (CBA

Acute intoxication with picrotoxin or the rodenticide tetramethylenedisulfotetramine (TETS) can cause seizures that rapidly progress to status epilepticus and death. Both compounds inhibit γ-aminobutyric acid type-A (GABA_A) receptors with similar potency. However, TETS is approximately

1. Trimethylolpropane phosphate (TMPP) is a potent cage convulsant, reported to act through binding to the picrotoxinin and/or benzodiazepine receptor sites of the gamma-aminobutyricA (GABA(A)) ionophore complex. 2. Adult male Fischer-344 rats were pretreated by intraperitoneal (i.p.) injection with

The main objective of this work was to study the role of the GABAergic system on the convulsions elicited by the organochlorine insecticide lindane. The concentration of lindane in rat brain at the onset of the first tonic convulsion was taken as the endpoint for the neurotoxic action of the

The functional state of GABAA receptors during physical dependence on ethanol was evaluated in two ways. First, the ability of ethanol dependence to change the convulsant potency of GABAA antagonists microinjected into the inferior colliculus was examined. A second approach evaluated the effects of

Anxiolytics and anticonvulsants generally positively modulate the action of GABA, whereas many convulsants (including the chloride channel blocker picrotoxinin) negatively modulate the action of GABA on GABAA receptors. Like picrotoxinin, bilobalide and ginkgolide B, active constituents of Ginkgo

The interactions of pentamethylenetetrazole and ten tetrazole analogues with the picrotoxinin site of the benzodiazepine-GABA receptor-ionophore complex was investigated. All the active tetrazole analogues potently inhibited the binding of [35S]t-butyl- bicyclophosphorothionate ( TBPT ), a ligand

The neurotoxic organochlorine pesticides gamma-hexachlorocyclohexane, alpha-endosulfan and dieldrin induce in mammals a hyperexcitability syndrome accompanied by convulsions. They reduce the GABA-induced Cl(-) flux. The strychnine-sensitive glycine receptor also regulates Cl(-)-flux inhibitory

Vertebrates and invertebrates both have GABA (gamma-aminobutyric acid) as a major inhibitory neurotransmitter. GABAA receptors in vertebrates assemble as heteromultimers to form an integral chloride ion channel. These receptors are targets for drugs and pesticides and are also implicated in

Progabide (4-([(4-chlorophenyl) (5-fluoro-2-hydroxyphenyl)-methylene]amino) butanamide) is a gamma-aminobutyric acid (GABA) receptor agonist which readily enters the brain. In the body, progabide is metabolized to three active metabolites: SL 75102, gabamide and GABA. Progabide and SL 75102 readily

Seizures affect about 50 million people around the world. Approximately 30% of seizures are refractory to the current pharmacological arsenal, so, the pursuit of new therapeutic alternatives is essential. Clarified Euterpe oleracea (EO) juice showed anticonvulsant properties similar to diazepam in

Our earlier observations showed that L-lysine enhanced the activity of diazepam against seizures induced by pentylenetetrazol (PTZ), and increased the affinity of benzodiazepine receptor binding in a manner additive to that caused by gamma-aminobutyric acid (GABA). The present paper provides

DMCM (methyl 6,7-dimethoxy-4-ethyl-beta-carboline-3-carboxylate) produces convulsions in mice and rats, probably by interacting with benzodiazepine (BZ) receptors. Investigation of specific binding of [3H]DMCM to rat hippocampus and cortex revealed polyphasic saturation curves, indicating a

Ethanol, barbiturates and benzodiazepines have similar pharmacological effects. All of these drugs facilitate the inhibitory transmission mediated by GABA. Drugs that facilitate GABAergic transmission are effective in alleviating ethanol withdrawal symptoms. Acute ethanol administration increases