l phenylalanine/seizures

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Efficacy of 3,5-dibromo-L-phenylalanine in rat models of stroke, seizures and sensorimotor gating deficit.

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OBJECTIVE Abnormal glutamatergic activity is implicated in neurologic and neuropsychiatric disorders. Selective glutamate receptor antagonists were highly effective in animal models of stroke and seizures but failed in further clinical development because of serious side effects, including an almost

Influence of pharmacological manipulation of inhibitory and excitatory neurotransmitter systems on seizure behavior in the Mongolian gerbil.

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The purpose of this paper was to study the relationship between different neurotransmitter systems and seizure susceptibility in Mongolian gerbils with genetically determined epilepsy. In these animals, generalized tonic-clonic seizures were induced by stimulation with a blast of compressed air. A

Lack of effect of aspartame or of L-phenylalanine on photically induced myoclonus in the baboon, Papio papio.

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The effects of large doses of L-phenylalanine and of aspartame on seizure susceptibility and severity have been assessed in baboons Papio papio from Senegal which show photosensitive epileptic responses similar to primary generalised epilepsy in man. L-Phenylalanine, 50, 150 or 450 mg/kg, or

N-valproyl-L-phenylalanine as new potential antiepileptic drug: synthesis, characterization and in vitro studies on stability, toxicity and anticonvulsant efficacy.

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Valproic acid (VPA) is considered first-line drug in treatment of generalized idiopathic seizures such as absence, generalized tonic-clonic and myoclonic seizures. Among major antiepileptic drugs, VPA is also considered effective in childhood epilepsies and infantile spasms. Due to its broad

Aspartame and seizures.

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It has been hypothesized that the dietary sweetener aspartame (L-aspartyl-L-phenylalanine methyl ester) might promote seizures and this hypothesis has been argued in the published literature. The current manuscript reviews the biochemical, neurochemical and behavioral experiments that have been

Failure of aspartame to affect seizure susceptibility in kindled rats.

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The effect of aspartame administered by gavage to rats on amygdala and hippocampal kindled seizures was assessed. Despite the administration of a wide range of doses (25-2000 mg/kg) no evidence for an effect of aspartame on afterdischarge threshold or seizure strength was obtained when testing was

Aspartame has no effect on seizures or epileptiform discharges in epileptic children.

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The effects of aspartame (L-aspartyl-L-phenylalanine methyl ester; APM) on the neurological status of children with well-documented seizures were examined in a randomized, double-blind, placebo-controlled, crossover study. We report on 10 children (5 boys, 5 girls, ages 5-13 yr) who were tested for

Behavioral and neurobiological effects of the enkephalinase inhibitor RB101 relative to its antidepressant effects.

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Nonpeptidic delta-opioid receptor agonists produce antidepressant-like effects in rodents, and compounds that inhibit the breakdown of endogenous opioid peptides have antidepressant-like effects in animal models. In this study, the behavioral effects of the enkephalinase inhibitor, RB101 (N-[(R,

Biphenyl-derivatives of 2-amino-7-phosphono-heptanoic acid, a novel class of potent competitive N-methyl-D-aspartate receptor antagonists--II. Pharmacological characterization in vivo.

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A selection of biphenyl-analogues of 2-amino-7-phosphonoheptanoic acid (AP7), N-methyl-D-aspartate (NMDA) receptor antagonists with high affinity in vivo efficacy. The lead compound SDZ EAB 515 was found to inhibit L-phenylalanine uptake by the large neutral amino acid carrier in vitro and in vivo;

EXPERIMENTAL PHENYLKETONURIA IN INFANT MONKEYS.

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Experimental phenylketonuria can be produced in infant monkeys by feeding excessive quantities of L-phenylalanine soon after birth. Both the phenylketonuric monkey and the phenylketonuric human patient have elevated plasma levels of phenylalanine, and monkey and human excrete almost the same

General pharmacology of the novel angiotensin converting enzyme inhibitor alacepril. 2nd communication: Effects on central nervous and sensory systems and on the other functions.

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The effects of 1-[(S)-3-acetylthio-2-methylpropanoyl]-L-prolyl-L-phenylalanine (alacepril, DU-1219), an orally active angiotensin converting enzyme inhibitor, on the central nervous and sensory systems and on several other functions were compared with those of captopril in the experimental animals.

Metabolism of amino acid neurotransmitters: the synaptic disorder underlying inherited metabolic diseases.

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Amino acids are involved in various metabolic pathways and some of them also act as neurotransmitters. Since biosynthesis of L-glutamate and γ-aminobutyric acid (GABA) requires 2-oxoglutarate while 3-phosphoglycerate is the precursor of L-glycine and D-serine, evolutionary selection of these amino

Studies on interactions between striatal dopaminergic and cholinergic mechanisms in the early abstinence after chronic treatment with barbital in the rat.

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Accumulation in the rat striatum of 3,4-dihydroxy-L-phenylalanine (DOPA) after inhibition of the neuronal decarboxylase was not significantly altered in the early abstinence after chronic treatment with barbital for 36-39 weeks in comparison with controls treated with water. Pilocarpine (10 mg/kg

Retrospective Study of Patients with Hyperphenylalaninemia- Experience from a Tertiary Care Center in Pakistan.

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To assess the clinical and biochemical features as well as outcome of hyperphenylalaninemia patients.The descriptive retrospective study was conducted at the Aga Khan University Hospital, Karachi, and comprised data from January 2013 to February 2017 of

Neurophysiological symptoms and aspartame: What is the connection?

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Aspartame (α-aspartyl-l-phenylalanine-o-methyl ester), an artificial sweetener, has been linked to behavioral and cognitive problems. Possible neurophysiological symptoms include learning problems, headache, seizure, migraines, irritable moods, anxiety, depression, and insomnia. The consumption of

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