Neurotransmitters
Mostrando 13-24 de 399 artigos, teses e dissertações.
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13. Neurobiochemical mechanisms of a ketogenic diet in refractory epilepsy
A ketogenic diet is an important therapy used in the control of drug-refractory seizures. Many studies have shown that children and adolescents following ketogenic diets exhibit an over 50% reduction in seizure frequency, which is considered to be clinically relevant. These benefits are based on a diet containing high fat (approximately 90% fat) for 24 mon
Clinics. Publicado em: 2014-12
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14. Septic encephalopathy: does inflammation drive the brain crazy?
Sepsis and the multiorgan dysfunction syndrome are among the most common reasons for admission to an intensive care unit, and are a leading cause of death. During sepsis, the central nervous system (CNS) is one of the first organs affected, and this is clinically manifested as sepsis-associated encephalopathy (SAE). It is postulated that the common final pat
Rev. Bras. Psiquiatr.. Publicado em: 11/06/2014
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15. Effects of nitric oxide on magnocellular neurons of the supraoptic nucleus involve multiple mechanisms
Physiological evidence indicates that the supraoptic nucleus (SON) is an important region for integrating information related to homeostasis of body fluids. Located bilaterally to the optic chiasm, this nucleus is composed of magnocellular neurosecretory cells (MNCs) responsible for the synthesis and release of vasopressin and oxytocin to the neurohypophysis
Braz J Med Biol Res. Publicado em: 2014-02
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16. Cholecystokinin modulation of maternal behavior
Maternal behavior is regulated by several neurotransmitters, neuropeptides, and hormones. This mini-review focuses on the role of cholecystokinin (CCK), a neuropeptide and gut hormone best known as a satiety signal, in mediating maternal behavior. In addition to the role of CCK in the infant in mother-infant interactions, maternal CCK appears to also be impo
Psychol. Neurosci.. Publicado em: 2013-12
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17. New frontiers in the study of memory mechanisms
We review recent work on three major lines of memory research: a) the possible role of the protein kinase M-zeta (PKMzeta) in memory persistence; b) the processes of “synaptic tagging and capture” in memory formation; c) the modulation of extinction learning, widely used in the psychotherapy of fear memories under the name of “exposure therapy”. PKMz
Rev. Bras. Psiquiatr.. Publicado em: 2013-06
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18. Mapping and signaling of neural pathways involved in the regulation of hydromineral homeostasis
Several forebrain and brainstem neurochemical circuitries interact with peripheral neural and humoral signals to collaboratively maintain both the volume and osmolality of extracellular fluids. Although much progress has been made over the past decades in the understanding of complex mechanisms underlying neuroendocrine control of hydromineral homeostasis, s
Braz J Med Biol Res. Publicado em: 12/04/2013
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19. Evaluation of neurotransmitters involved in the anxiolytic and panicolytic effect of the aqueous fraction of Paullinia cupana (guaraná) in elevated T maze
This study investigated the effects of repeatedly administration of an aqueous fraction of Paullinia cupana Kunth, Sapindaceae (guaraná) seeds (8 mg/kg) on rats submitted to the elevated T-maze, model of generalized anxiety and panic disorders. The selective serotonin reuptake inhibitor paroxetine (3 mg/kg), was used as a positive control. To evaluate possi
Rev. bras. farmacogn.. Publicado em: 05/03/2013
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20. Efeitos da Acupuntura, Eletroacupuntura e Metformina Sobre o Estresse Oxidativo, InflamaÃÃo e Glicemia em Ratas Sadias Submetidas a EstÃmulo EstrogÃnico / EFFECTS OF ACUPUNCTURE, ELETROACUPUNCTURE AND METFORMIN ON OXIDATIVE STRESS, INFLAMMATION AND BLOOD GLUCOSE IN HEALTHY RATS SUBMITTED TO ESTROGENIC STIMULATION
The physiological performance of cellular activity requires a balance between the production of free radicals and their deactivation by regulators and surge protectors. When this balance is broken, the oxidative stress takes place. Several experimental studies using estrogens to induction of ovarian and metabolic disorders, with emphasis on the polycystic ov
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/06/2012
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21. Uma abordagem neurofisiológica da acetilcolina em plantas de milho hidratadas e sob condições de estresse hídrico / A neurophysiological approach to acetylcholine in maize plants hydrated and under water stress conditions
The occurrence of action potential and neurotransmitters, the major components of animal nervous system, in plants, bacteria and fungi, shows the universality of signaling principles and information transmission in the way of chemical and electrical signals in all organisms. These study topics, along with plant intelligence and vesicular-based auxin transpor
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/04/2012
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22. Anticonvulsant and antiarrhythmic effects of nifedipine in rats prone to audiogenic seizures
Calcium ion participates in the regulation of neural transmission and the presynaptic release of neurotransmitters. It is also involved in epileptic events, cardiac arrhythmias and abnormal conduction of stimuli. The purpose of the present study was to evaluate the effects of nifedipine, a calcium channel blocker, on epileptic seizures and on reperfusion arr
Braz J Med Biol Res. Publicado em: 2012-11
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23. Fine-tuning of defensive behaviors in the dorsal periaqueductal gray by atypical neurotransmitters
This paper presents an up-to-date review of the evidence indicating that atypical neurotransmitters such as nitric oxide (NO) and endocannabinoids (eCBs) play an important role in the regulation of aversive responses in the periaqueductal gray (PAG). Among the results supporting this role, several studies have shown that inhibitors of neuronal NO synthase or
Brazilian Journal of Medical and Biological Research. Publicado em: 2012-04
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24. Estudo comportamental e neuroquÃmico em ratos periadolescentes submetidos ao tratamento agudo e subcrÃnico com efavirenz. / Behavioral and neurochemical study in periadolescent rats submitted to acute and subchronic treatment with efavirenz.
A terapia antirretroviral revolucionou o tratamento dos pacientes portadores do vÃrus da imunodeficiÃncia humana (HIV) porque melhorou o estado clÃnico destes pacientes. à essencial que no mÃnimo uma das drogas utilizadas nesta terapia atravesse bem a barreira hemato-encefÃlica, jà que o HIV alcanÃa o sistema nervoso central (SNC), causando danos. O
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/11/2011