Raphe Nuclei
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. Temporomandibular inflammation mobilizes parvalbumin and FosB/deltaFosB neurons of amygdala and dorsal raphe
Pathophysiological mechanisms involved in orofacial pain and their relationship with emotional disorders have emerged as an important research area for multidisciplinary studies. In particular, temporomandibular disorders (TMD) have been evaluated clinically from both physiological and psychological perspectives. We hypothesized that an altered neuronal acti
Braz J Med Biol Res. Publicado em: 2020-08
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2. Tryptophan overloading activates brain regions involved with cognition, mood and anxiety
ABSTRACT Tryptophan is the only precursor of serotonin and mediates serotonergic activity in the brain. Previous studies have shown that the administration of tryptophan or tryptophan depletion significantly alters cognition, mood and anxiety. Nevertheless, the neurobiological alterations that follow these changes have not yet been fully investigated. The ai
An. Acad. Bras. Ciênc.. Publicado em: 16/02/2017
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3. Delimitação dos grupamentos serotoninérgicos/núcleos da rafe do mocó (kerodon rupestris): citoarquitetura e imunoistoquímica para serotonina
A serotonina ou 5-hidroxitriptamina (5-HT) é uma substância encontrada em muitos tecidos do organismo, inclusive no sistema nervoso como neurotransmissor, onde pode exercer ações pós-sinápticas variadas. Dentro do neuro-eixo, a localização dos neurônios 5-HT é quase absoluta nos núcleos da rafe do tronco encefálico, de tal maneira que 5-HT neuron
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/12/2010
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4. Serotonin and circadian rhythms
All mammal behaviors and functions exhibit synchronization with environmental rhythms. This is accomplished through an internal mechanism that generates and modulates biological rhythms. The circadian timing system, responsible for this process, is formed by connected neural structures. Pathways receive and transmit environmental cues to the central oscillat
Psychology & Neuroscience. Publicado em: 2010-12
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5. Hormonal and cognitive factors associated with the exploratory behavior of rats submitted to repeated sessions of the elevated plus-maze
Naive rats submitted to the elevated plus-maze (EPM) display a characteristic increase in open arm exploration and reduced risk assessment behaviors (RABs) after the administration of anxiolytic drugs. Upon re-exposure to the maze, however, the traditional measures of the EPM become resistant to these drugs. This intriguing phenomenon was initially observed
Psychology & Neuroscience. Publicado em: 2010-06
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6. Participação dos núcleos da rafe nas respostas cardiorespiratórias à hipóxia e hipercarbia em sapos / Role of the raphe nuclei in the ventilatory and cardiovascular response to hypoxia and hipercarbia in toads
The raphe nuclei are brainstem cell groups and the main cell type is serotonergic. In adult anurans electrical or chemical stimulation of the medullary raphe has no effect on ventilation, whereas in mammals depending on the specific site of stimulation, an excitatory or inhibitory response is elicited. In mammals the medullary raphe participate in the ventil
Publicado em: 2010
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7. DistribuiÃÃo e anÃlise quantitativa de neurÃnios imunoreativos à enzima triptofano hidroxilase em nÃcleos de rafe de ratos desnutridos durante a vida perinatal / Distribution and quantitative analysis of neurons immunoreactive for the enzyme tryptophan hydroxylase in the raphe nuclei of animals malnourished during perinatal life
Nutritional disorders occurring during the development of the nervous system may program the fetal metabolism so long to allow the survival of individuals to changes in the nutritional environment. The perinatal protein malnutrition promotes neurochemical changes, including the levels of serotonin and limiting enzyme for its synthesis, tryptophan hydroxylase
Publicado em: 2009
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8. Estudo do desenvolvimento somático e sensório-motor de Rattus norvegicus machos e fêmeas oriundos de mães tratadas na prenhez com sertralina: análise da distribuição dos neurônios serotoninérgicos nos núcleos da rafe. / Study of development and somatic sensorimotor of Rattus norvegicus males and females from mothers treated with sertraline in pregnancy: analysis of the distribution of serotonergic neurons in the raphe nuclei.
Analisamos o efeito do sistema serotoninérgico no desenvolvimento somático e na ontogênese de reflexos dos filhotes, cujas mães foram submetidas a tratamento farmacológico durante a prenhez. Ratas wistar prenhas foram divididas em dois grupos (N=11): Grupo AD, tratadas com água destilada, Grupo Sert, tratadas com sertralina 30mg/kg, 0,5mL/100g, s.c. Um
Publicado em: 2008
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9. Functional mapping of the cardiorespiratory effects of dorsal and median raphe nuclei in the rat
The dorsal (DRN) and median (MRN) raphe nuclei are important sources of serotonergic innervation to the forebrain, projecting to sites involved in cardiovascular regulation. These nuclei have been mapped using electrical stimulation, which has the limitation of stimulating fibers of passage. The present study maps these areas with chemical stimulation, inves
Brazilian Journal of Medical and Biological Research. Publicado em: 2005-11
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10. Role of the raphe nuclei in the homeostatic responses to blood volume alteration : an immunohistochemical study of Fos expression in rats / Envolvimento dos núcleos da rafe nas respostas adaptativas a alterações de volume sangüineo em ratos, estudo através da expressão de Fos
Estudos prévios demonstram projeções dos núcleos da rafe para áreas clássicas relacionadas ao controle do sistema cardiovascular, como locus coeruleus, núcleo do trato solitário, coluna intermédio lateral da medula espinal, núcleos motor dorsal do vago e ambíguo. Baseado nesta informação este estudo investigou a participação dos núcleos da ra
Publicado em: 2004
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11. Estudo comparativo da expressão da proteína Fos nos núcleos da rafe entre ratos submetidos a exercício físico e sedentários / Comparative study of Fos protein expression in the raphe nuclei between sedentary and trained rats
O presente estudo objetivou analisar o envolvimento diferenciado dos núcleos da rafe nas respostas homeostáticas de ratos machos jovens submetidos a exercício físico. Foram formados os grupos de animais treinados (T) e sedentários (S). Para os animais do grupo T foi adotado o protocolo de natação moderada, por meio do qual os animais foram treinados d
Publicado em: 2004
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12. Behavioral correlates of the activity of serotonergic and non-serotonergic neurons in caudal raphe nuclei
We investigated the behavioral correlates of the activity of serotonergic and non-serotonergic neurons in the nucleus raphe pallidus (NRP) and nucleus raphe obscurus (NRO) of unanesthetized and unrestrained cats. The animals were implanted with electrodes for recording single unit activity, parietal oscillographic activity, and splenius, digastric and masset
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-07