glutamic acid/seizures

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Developmental PCB Exposure Increases Audiogenic Seizures and Decreases Glutamic Acid Decarboxylase in the Inferior Colliculus.

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Previously, we observed that developmental polychlorinated biphenyl (PCB) exposure resulted in an increase in audiogenic seizures (AGSs) in rats. However, the rats were exposed to loud noise in adulthood, and were not tested for AGS until after 1 year of age, either of which could have interacted

Convulsions induced by methylmalonic acid are associated with glutamic acid decarboxylase inhibition in rats: a role for GABA in the seizures presented by methylmalonic acidemic patients?

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Methylmalonic acid (MMA) is an endogenous convulsing compound that accumulates in methylmalonic acidemia, an inborn error of the metabolism characterized by severe neurological dysfunction, including seizures. The mechanisms by which MMA causes seizures involves the activation of the

MDMA decreases glutamic acid decarboxylase (GAD) 67-immunoreactive neurons in the hippocampus and increases seizure susceptibility: Role for glutamate.

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3,4-Methylenedioxy-methamphetamine (MDMA) is a unique psychostimulant that continues to be a popular drug of abuse. It has been well documented that MDMA reduces markers of 5-HT axon terminals in rodents, as well as humans. A loss of parvalbumin-immunoreactive (IR) interneurons in the hippocampus

Selective inhibition of homocysteine-induced seizures by glutamic acid diethyl ester and other glutamate esters.

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Homocysteine thiolactone causes convulsions when administered to animals, and has recently been reported to have excitatory effects on neurons in the central nervous system. Glutamic acid diethyl ester (GDEE) has previously been found to be an effective antagonist of the central excitation induced

Hippocampal granule cells express glutamic acid decarboxylase-67 after limbic seizures in the rat.

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Temporal lobe epilepsy is the most common form of epilepsy. Decreased GABA-ergic inhibition has been suggested as one cause of hyperexcitability. On the other hand, increased expression of glutamic acid decarboxylase, the rate-limiting enzyme of GABA synthesis, has been found in interneurons of the

[Effect of glutamic acid palmitamide or linoleamide on convulsions induced by pentetrazole].

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Female Balb-C mice received glutamic acid palmitamide (PGt) or linoleamide (LGt) at doses included between 10 and 135 mg.kg-1 (i.p.) and, 90 min after these injections, pentetrazol (PTZ) at 90 mg.kg-1, i.p. PGt (10 or 100 mg.kg-1, i.p.) reduced significantly latencies of first convulsions and

Genetic variability in glutamic acid decarboxylase genes: associations with post-traumatic seizures after severe TBI.

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Post traumatic seizures (PTS) occur frequently after traumatic brain injury (TBI). Since gamma-amino butyric acid (GABA) neurotransmission is central to excitotoxicity and seizure development across multiple models, we investigated how genetic variability for glutamic acid decarboxylase (GAD)

Inhibition of quisqualate-induced seizures by glutamic acid diethyl ester and anti-epileptic drugs.

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Glutamic acid diethyl ester (GDEE) is a glutamate antagonist which acts preferentially at the quisqualate-sensitive receptor and has been shown to be an effective anticonvulsant in alcohol withdrawal and homocysteine-induced seizures but ineffective in other seizure models. To better characterize

Excitatory amino acid antagonists and pentylenetetrazol-induced seizures during ontogenesis: III. The action of kynurenic acid and glutamic acid diethylester.

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N-methyl-D-aspartate (NMDA) receptor antagonists are anticonvulsant drugs with specific activity against tonic-clonic pentylenetetrazol-induced seizures. However, they do not affect clonic seizures with preserved righting reflexes. In these experiments, we tested the anticonvulsant activity of

Cerebral glutamic acid decarboxylase activity and gamma-aminobutyric acid concentrations in mice susceptible or resistant to audiogenic seizures.

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DBA/2 mice between 21 and 28 days of age are highly susceptible to sound-induced seizures. Drug studies suggest a possible deficit of gamma-aminobutyric acid (GABA)-mediated neurotransmission may be involved. We have measured the whole brain GABA concentration and glutamic acid decarboxylase

The selective inhibition of hippocampal glutamic acid decarboxylase in zinc-induced epileptic seizures.

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The intracerebroventricular administration of Zn2+ (0.3 mumol/10 microliters) causes epileptic seizures characterized by running fits, jumping, vocalization, fasiculation of facial muscles, myoclonic movements of the limbs and tonic-clonic convulsions. These episodes are blocked or reversed by

Gamma-aminobutyric acid and glutamic acid receptors may mediate theophylline-induced seizures in mice.

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The effects of drugs affecting GABA and glutamic acid receptors on theophylline-induced seizures were investigated in mice. Theophylline elicited tonic seizures in mice in a dose dependent manner. Muscimol, DABA and AOAA significantly prolonged the onset and significantly decreased the incidence of

Selective resistance of taurine-fed mice to isoniazide-potentiated seizures: in vivo functional test for the activity of glutamic acid decarboxylase.

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Taurine, 2-aminoethanesulfonic acid, is one of the most abundant free amino acids especially in excitable tissues, with wide physiological actions. We have previously reported that in mice, supplementation of the drinking water with taurine induces alterations in the inhibitory GABAergic system. In

Mice lacking the 65 kDa isoform of glutamic acid decarboxylase (GAD65) maintain normal levels of GAD67 and GABA in their brains but are susceptible to seizures.

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The gene encoding of the 65 kDa isoform of the gamma-aminobutyric acid (GABA)-synthesizing enzyme, glutamic acid decarboxylase (GAD), GAD65, was targeted in mice by homologous recombination. Viable GAD65 -/- mice were obtained with the expected mendelian frequency and displayed no gross

Musicogenic reflex seizures in epilepsy with glutamic acid decarbocylase antibodies.

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BACKGROUND Musicogenic reflex seizures (MRS) are a rare form of seizures described in patients with temporal lobe epilepsy (TLE), mainly of unknown etiology. Epilepsy with antibodies against glutamic acid decarboxylase (GAD-ab) is a form of autoimmune epilepsy for which no specific semiology has

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