adenine/crise epiléptica

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The combination of ribose and adenine promotes adenosine release and attenuates the intensity and frequency of epileptiform activity in hippocampal slices: Evidence for the rapid depletion of cellular ATP during electrographic seizures.

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In addition to being the universal cellular energy source, ATP is the primary reservoir for the neuromodulator adenosine. Consequently, adenosine is produced during ATP-depleting conditions, such as epileptic seizures, during which adenosine acts as an anticonvulsant to terminate seizure activity

Increase of adenine nucleotide hydrolysis in rat hippocampal slices after seizures induced by quinolinic acid.

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Quinolinic acid (QUIN), an endogenous convulsant compound, overstimulates the glutamatergic system stimulating N-methyl-D-aspartate receptors, enhancing glutamate release and inhibiting glutamate uptake. Glutamate releases the neuroprotector adenosine, which in turn reduces glutamate release and

Differential changes in neuropeptide Y and nicotinamide adenine dinucleotide phosphate-diaphorase-positive neurons in rat hippocampus after kainic acid-induced seizure.

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Changes in neuropeptide Y (NPY) and nicotinamide adenine dinucleotide phosphate-diaphorase (NADPH-d)-positive neurons in the hippocampus were investigated 5, 10 and 20 days after kainic acid (KA) administration using a double labeling method. The numbers of NADPH-d-positive-only and

Activation of nicotinamide adenine dinucleotide phosphate oxidase is the primary trigger of epileptic seizures in rodent models.

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<AbstractText>Despite decades of epilepsy research, 30% of focal epilepsies remain resistant to antiseizure drugs, with effective drug development impeded by lack of understanding on how seizures are initiated. Here, we report the mechanism of seizure onset relevant to most seizures that are

Role of adenosine signaling on pentylenetetrazole-induced seizures in zebrafish.

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Adenosine is a well-known endogenous modulator of neuronal excitability with anticonvulsant properties. Thus, the modulation exerted by adenosine might be an effective tool to control seizures. In this study, we investigated the effects of drugs that are able to modulate adenosinergic signaling on

Cerebral metabolic changes during and following fluorothyl-induced seizures in ventilated rats.

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The objective of the present study was to assess metabolic changes in the neocortex and hippocampus of well-oxygenated or moderately hypoxic rats in which fluorothyl-induced seizures were sustained for 5 or 20 min, or which were allowed recovery periods of 5, 15, or 45 min following cessation of

Anticonvulsant activity of B2, an adenosine analog, on chemical convulsant-induced seizures.

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Epilepsy is a chronic neurological disorder characterized by recurrent seizures. However, approximately one-third of epilepsy patients still suffer from uncontrolled seizures. Effective treatments for epilepsy are yet to be developed. N (6)-(3-methoxyl-4-hydroxybenzyl) adenine riboside (B2) is a

Substituted thiazolidones: selective inhibition of nicotinamide adenine dinucleotide-dependent oxidations and evaluation of their CNS activity.

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Eight 2-arylimino-3-(3-N-morpholinopropyl) thiazolid-4-ones were synthesized from the corresponding 1-aryl-3-(3-N-morpholinopropyl) thiocarbamides, characterized, and tested for their effects on the cellular respiratory activity of rat brain homogenates. All substituted 4-thiazolidones selectively

Nitric oxide production is decreased in the brain of the seizure susceptible EL mouse.

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To investigate nitric oxide production in the brain of the EL mouse, an inbred mutant strain of the ddY mouse that is susceptible to convulsive seizures, we measured whole brain nitric oxide metabolites, and counted the number of nitric oxide-producing cells in the parietal cortex and striatum.

[Partial deficiency of hypoxanthine-guanine phosphoribosyltransferase presenting seizure and psychomotor retardation: a case report].

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An 18-year-old man was admitted to our hospital because of convulsive seizure. He had psychomotor retardation and intellectual disability from childhood, and had been diagnosed with attention deficit-hyperactivity disorder when he was 12 years old. He showed mental deficit (Wechsler Adult

The calculation of the cytoplasmic free [NADP+]/[NADPH] ratio in brain: effect of electroconvulsive seizure.

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This study has investigated the feasibility of calculating the cytoplasmic free [NADP+]/[NADPH] ratio in rat brain. The time course of the change in the substrate ratios of the malate dehydrogenase (decarboxylating) [E.C. 1.1.1.40], NADP+-isocitrate dehydrogenase (decarboxylating) [E.C. 1.1.1.42]

Seizure-induced changes in energy metabolites and effects of N-tert-butyl-alpha-phenylnitrone (PNB) and vitamin E in rats.

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Impaired energy metabolism may play a critical role in the neuronal injury caused by kainic acid (KA) induced status epilepticus (SE). Following an acute dose of KA (15 mg/kg, s.c.) rats developed SE within 1 h. Rats were sacrificed 1 or 72 h after the onset of SE using a head focused microwave

Seizure-induced changes in energy metabolites and effects of N-tert-butyl-α-phenylnitrone (PNB) and vitamin E in rats.

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Impaired energy metabolism may play a critical role in the neuronal injury caused by kainic acid (KA) induced status epilepticus (SE). Following an acute dose of KA (15 mg/kg, sc) rats developed SE within 1 h. Rats were sacrificed 1 or 72 h after the onset of SE using a head focused microwave

Influence of dietary zinc on convulsive seizures and hippocampal NADPH diaphorase-positive neurons in seizure susceptible EL mouse.

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Adequate, high and deficient dietary levels of zinc (Zn) were compared in seizure-susceptible EL mice with respect to convulsions and to nicotinamide adenine dinucleotide phosphate (NADPH) diaphorase-positive hippocampal neurons. Diaphorase positivity is associated with nitric oxide (NO) production.

Concentration of purine compounds in the cerebrospinal fluid of infants suffering from sepsis, convulsions and hydrocephalus.

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Catabolites of purine nucleotides were measured in the cerebrospinal fluid (CSF) of newborn infants with sepsis, seizures and hydrocephalus using isocratic reversed-phase HPLC. The inosine levels in the CSF of the infants with any of the illnesses were significantly higher when compared with the

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