Cerebral Neurotransmitters
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Atenção visual em crianças com migrânea: um estudo comparativo controlado / Visual attention in children with migraine: a controlled comparative study
Objective: To evaluate the visual attention of children with migraine and compare to the headache free control group. Method: 30 children with migraine, with (n=5) and without aura (n=25), which fulfill the gInternational Headache Society (ICHD-II, 2004)h criteria, 15 female, ages 8 to 12 years and 11 months (average=10.8 }1.5 years), with an average of 5.8
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/06/2011
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2. Neurotransmitters related to depression and psychosis in human brain samples of patients submitted to surgery for temporal lobe epilepsy study. / Estudo de neurotransmissores relacionados à depressão e psicose em amostras de cérebro humano de pacientes submetidos à cirurgia por epilepsia de lobo temporal
A epilepsia é um transtorno do funcionamento cerebral caracterizado por crises epilépticas recorrentes que acomete cerca de 1 a 2% da população mundial. A epilepsia do lobo temporal (ELT) é o subtipo mais prevalente. A refratariedade aos medicamentos é comum e cerca de 40 % destes pacientes apresentam transtornos psiquiátricos. Neste trabalho utilizam
Publicado em: 2008
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3. Effects of a- and b-neurotoxins from Tityus serrulatus scorpion venom on catecholamines release, arterial blood pressure, neurotransmitters uptake and calcium concentration in smooth muscle cells from rat aorta / Efeitos de a e b-neurotoxinas da peçonha do escorpião Tityus serrulatus sobre a liberação de catecolaminas, pressão arterial, captação de neurotransmissores e concentração de cálcio em células de músculo liso de aorta de ratos
Toxinas que atuam em canais para Na+ operados por voltagem são as principais responsáveis pelos efeitos tóxicos do envenenamento escorpiônico e podem ser divididas em duas classes: a- e b-neurotoxinas. TsTX-V e TsTX-I da peçonha de Tityus serrulatus (TsV) são, respectivamente, exemplos destas toxinas. Neste trabalho, foram avaliados os efeitos da TsV e
Publicado em: 2006
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4. Inhibition of L-glutamate and GABA synaptosome uptake by crotoxin, the major neurotoxin from Crotalus durissus terrificus venom
This paper describes a brief study on the crotoxin mechanism of action, regarding the transport of GABA and L-glutamate in rats cortico-cerebral synaptosomes and in heterologous systems, such as COS-7 cells expressing gabaergic transporters, and C6 glioma cells and Xenopus oocytes expressing glutamatergic transporters. Crotoxin concentrations over 1 µM caus
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2004
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5. Efeitos da injeção de moxonidina no controle da ingestão de sódio e regulação cardiovascular.
Deficit of water and sodium in the body is detected by receptors located in different parts of the body. These receptors or hormones signalize to specific areas in the brain that control renal responses and water and sodium intake. Among these areas are: organum vasculosum of the lamina terminalis (OVLT), subfornical organ (SFO), anteroventral third ventricl
Publicado em: 2003
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6. Efeitos da exposição gestacional a fração aquosa da Ipomoea carnea no desenvolvimento físico e neurocomportamental da prole de ratos. / Ipomoea carnea aqueous fraction intake effects during gestation on physical and neurobehavior development of rats offspring.
Ipomoea carnea, plant Iargely distributed in Brazil, when ingested by animais causes neurotoxic effects. No relates about its effects upon offspring of animais exposed during gestation period appears in the literature. So, in this work, the effects of the exposure of rats, during the gestation period, to the plant were studied. The rats received, by gavage,
Publicado em: 2002
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7. Neurotransmitters and the Cerebral Circulation. (DERS Monograph Series, Volume 2).
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8. Release of neurotransmitters and depletion of synaptic vesicles in cerebral cortex slices by alpha-latrotoxin from black widow spider venom.
The effect of alpha-latrotoxin on cerebral cortex slices was studied by both biochemical and morphological methods. This toxin greatly stimulates the release of preloaded gamma-amino[3H]butyric acid from cortex slices. The response increases linearly with dose. The release is not dependent on the presence of extracellular Ca2+, and therefore it is not mediat
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9. Convergence and divergence of neurotransmitter action in human cerebral cortex.
The postsynaptic actions of acetylcholine, adenosine, gamma-aminobutyric acid, histamine, norepinephrine, and serotonin were analyzed in human cortical pyramidal cells maintained in vitro. The actions of these six putative neurotransmitters converged onto three distinct potassium currents. Application of acetylcholine, histamine, norepinephrine, or serotonin
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10. Photolysis of a protecting group for the carboxyl function of neurotransmitters within 3 microseconds and with product quantum yield of 0.2.
The synthesis of a photosensitive blocking group for the carboxyl function of neurotransmitters, in this case glycine, is reported. The compound, 2-methoxy-5-nitrophenyl glycine ester (caged glycine), is photolyzed by a laser pulse at 308 or 337 nm within 3 microseconds and with a product quantum yield of 0.2. The compound is hydrolyzed in water with a time
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11. Cocaine use and stroke
Stroke is the third most common cause of death in developed countries. In England and Wales, 1000 people under the age of 30 have a stroke each year. Cocaine is the most commonly used class A drug, and the first report of cocaine‐induced stroke was in 1977. Since the development of alkaloidal “crack” cocaine in the 1980s, there has been a significant r
BMJ Group.
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12. Arachidonic acid stimulates glucose uptake in cerebral cortical astrocytes.
Arachidonic acid (AA) has recently been shown to influence various cellular functions in the central nervous system. Here we report that AA increases, in a time- and concentration-dependent manner, 2-deoxy-D-[1-3H]glucose ([3H]2DG) uptake in primary cultures of astrocytes prepared from the cerebral cortex of neonatal mice. This effect is mimicked by an unsat