homovanillic acid/seizures

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Compensatory function of central dopaminergic system for suppressing psychic seizures--repeated plasma homovanillic acid measurement in refractory temporal lobe epilepsy.

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Repeatedly measured plasma homovanillic acid concentration, as a clinically available index of central dopaminergic activity in a patient with temporal lobe epilepsy during a drug-free period, was significantly correlated with seizure frequency in the week immediately following, but not preceding,

Homovanillic acid and 5-hydroxyindoleacetic acid in lumbar cerebrospinal fluid in children with afebrile and febrile convulsions.

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The concentrations of 5-hydroxyindoleacetic acid (5-HIAA) and homovanillic acid (HVA) were measured in lumbar cerebrospinal fluid (CSF) from five groups of children: (1) afebrile controls (2) febrile controls, (3) children with afebrile convulsions, which included children with established

5-Hydroxyindolacetic acid and homovanillic acid are not involved in the cerebrospinal fluid after a seizure in patients with Delirium Tremens.

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Little is known about 5-hydroxyindolacetic acid (5-HIAA) and homovanillic acid (HVA) levels in cerebrospinal fluid of patients with Delirium Tremens revealed at onset by seizures. The aim of the study is to understand the biochemical abnormalities induced by seizures in the cerebrospinal fluid of

5-Hydroxyindoleacetic acid and homovanillic acid in cerebrospinal fluid of children with febrile convulsions.

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5-Hydroxyindoleacetic acid (5-HIAA) and homovanillic acid (HVA) were measured by high-performance liquid chromatography (HPLC) in lumbar cerebrospinal fluid (CSF) obtained from febrile children subdivided according to the presence or absence of convulsions. Lumbar puncture was made either early

A patient with infantile spasms and low homovanillic acid levels in cerebrospinal fluid: L-dopa dependent seizures?

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We report a 3-month-old female with infantile spasms that responded transiently to pyridoxine and permanently to oral L-dopa. Initial CSF levels of homovanillic acid were low, suggesting disturbed turnover of dopamine. These findings suggest that disturbed brain monoamine metabolism may be causally

Pathogenetic role of monoamine metabolism in complex febrile seizures.

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To investigate the pathogenetic role of monoamine metabolism for febrile seizures, concentrations of homovanillic acid and 5-hydroxyindoleacetic acid were evaluated in the lumbar cerebrospinal fluid of affected children. This series included children who underwent lumbar puncture within 4 hours

Seizures as a presentation of a pelvic neuroblastoma in a 5-month-old infant.

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Epilepsy is a very uncommon first manifestation of a neuroblastoma. A 5-month-old healthy infant presented with acute onset seizures and developmental regression. Extensive investigation was remarkable for urinary vanillylmandelic acid and homovanillic acid peaks. Abdominopelvic magnetic resonance

Seizure frequency and CSF parameters in a double-blind placebo controlled trial of gabapentin in patients with intractable complex partial seizures.

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Gabapentin (GBP) is a non-protein-bound gamma amino acid which is not subjected to metabolic degradation in man. As part of a placebo-controlled double-blind study, patients suffering from intractable complex partial seizures with or without secondary generalization were followed with lumbar

Effects of pentylenetetrazol-induced kindling of seizures on rat emotional behavior and brain monoaminergic systems.

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The influence of pentylenetetrazol (PTZ)-induced kindling of seizures on the rat emotional behavior, the brain monoamine turnover rate measured in vitro, and correlation between behavioral and biochemical parameters, were examined in rats. The repeated administration of PTZ (35 mg/kg, ip) evoked

Quinolinic acid concentrations in brain and cerebrospinal fluid of patients with intractable complex partial seizures.

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Quinolinic acid (QUIN) is a neurotoxin and convulsant when injected directly into the brains of experimental animals and as such has been implicated in the etiology of human seizure disorders. In the present study, we quantified QUIN in cerebrospinal fluid (CSF) and in spiking (focus) and nonspiking

Effect of amygdaloid kindled seizures during pregnancy on neonatal brain biogenic amines.

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The effects of amygdaloid kindled seizures during pregnancy on the concentrations of noradrenaline (NE), dopamine (DA) and serotonin (5HT) and of their respective metabolites, 3-methoxy-4-hydroxyphenylglycol (MHPG), normetanephrine (NMN), homovanillic acid (HVA) and 5-hydroxy-indoleacetic acid

Brain norepinephrine reductions in soman-intoxicated rats: association with convulsions and AChE inhibition, time course, and relation to other monoamines.

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The organophosphate chemical nerve agent, soman, causes convulsions, neuropathology, and, ultimately, death. A major problem in treating soman intoxication is that peripherally acting pharmacological agents which prevent death do not prevent seizures. Although a primary cause of these symptoms is

Neurochemical effects of electrically and chemically induced seizures: an in vivo microdialysis study in the rat hippocampus.

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This study examined the effects of electroconvulsive shock (ECS) on interstitial concentrations of serotonin (5-HT), its metabolite 5-hydroxyindoleacetic acid (5-HIAA), acetylcholine and choline, and the dopamine metabolite homovanillic acid (HVA) in the hippocampus of freely moving rats using

The effect of different vigabatrin treatment regimens on CSF biochemistry and seizure control in epileptic patients.

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1. Vigabatrin, 50 mg kg-1, was administered orally as add-on therapy to 11 patients with drug-resistant complex partial epilepsy as a single dose, then once every third day for 2 months, every other day for 2 months and daily for 1 month. 2. Lumbar punctures were carried out prior to treatment and

Elevated homovanillic acid in cerebrospinal fluid of children with infantile spasms.

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To determine the role of noradrenaline, dopamine, and serotonin in the brain of patients with infantile spasms, levels of respective major metabolites in cerebrospinal fluid were examined. Homovanillic acid levels were significantly increased in these patients, while

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