We studied the effects of desipramine, alprazolam, muscimol and dizocilpine (MK-801) (alone or associated with desipramine) in the forced swimming test in rats after long-lasting termination of chronic exposure to vehicle and pentylenetetrazol. Sensitisation with pentylenetetrazol was ineffective in changing immobility time in the forced swimming test compared to vehicle treatment; pentylenetet...

background: there have been some reports about the possible n-methyl-d-aspartate (nmda) antagonist activity of guaifenesin. as drugs with a similar structure to guaifenesin (i.e. felbamate) and those with nmda antagonist activity have been clinically used as anticonvulsants, the aim of this study was to determine whether guaifenesin has an anticonvulsant effect in an animal model of seizure. me...

Trypanosoma cruzi trypanothione reductase (TR) was irreversibly inhibited by peroxidase/H2O2 /phenothiazine (PTZ) systems. TR inactivation depended on (a) time of incubation with the phenothiazine system; (b) the peroxidase nature and (c) the PTZ structure and concentration. With the most effective systems, TR inactivation kinetics were biphasic, with a relatively fast initial phase during whic...

Childhood absence epilepsy (CAE) is one of the most common forms of epilepsy among children. The study of a large Australian family demonstrated that a point mutation in the gene encoding the gamma2 subunit of the GABA(A) receptor (G2R43Q) leads to an autosomal dominantly inherited form of CAE and febrile seizures (FS). In a transgenic mouse model carrying the gamma2 (R43Q) mutation heterozygou...

The intravenous pentylenetetrazol (i.v.PTZ) seizure test provides threshold dose for induction of seizures in individual animals. In the present study, the i.v. and s.c.PTZ seizure models in mice were compared for seizure pattern, intra- and interanimal variability. Anticonvulsant activities of several antiepileptic drugs (AEDs) at non-ataxic dose levels were evaluated in the PTZ and maximal el...

Many of the biological actions of progesterone are mediated through the progesterone receptor (PR), a nuclear transcription factor. Progesterone is well recognized to protect against seizures in animal models. Although this activity has been attributed to the progesterone metabolite allopregnanolone, a GABAA receptor-modulating neurosteroid with anticonvulsant properties, PRs could also play a ...

We aimed to investigate the potential anticonvulsant effect of green synthetized selenium nanoparticles (SeNPs) using Syzygium aromaticum extract (SAE) (SAE-SeNPs) against epileptic seizures and cortical damage induced by pentylenetetrazole (PTZ) injection in rats its mechanism. A total 84 were divided into six groups; control, PTZ-exposed group, SAE + PTZ-treated sodium selenite (Na2SeO3) SAE-...

lead is known to be a potent neurotoxin that can cause seizure activity in humans and animals. also, epileptic type convulsion is a known complication of hypothyroidism. this study was performed to determine the effect of propylthiouracil (ptu)-induced hypothyroidism and chronic lead exposure on pentylenetetrazol (ptz)-induced kindling parameters. the test was carried out by using male albino r...