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O bloqueio dos receptores NMDA ou CRF1 no núcleo intersticial da estria terminal impede a ansiogênese induzida pela ativação nitrérgica do córtex pré-frontal medial e derrota social em camundongos
(Universidade Federal de São Carlos, 2019-09-20)
Nitric oxide (NO) release in the right medial prefrontal cortex (RmPFC) produces anxiogenesis. In the bed nucleus of the stria terminalis (BNST), a region that receives neuronal projections from the mPFC, NO also provokes ...
Bloqueio dos receptores 5-HT2 da substância cinzenta periaquedutal suprime o efeito ansiolítico resultante do antagonismo dos receptores 5-HT1A do núcleo mediano da rafe em camundongos
(Universidade Federal de São Carlos, 2011-12-15)
Several lines of evidence support the involvement of serotonergic (5-HT) neurons of the median raphe nucleus (MRN) in anxiety-like behaviour. In this context, it is known that blockade of 5- HT1A somatodendritic autoreceptors ...
Papel dos receptores GABA-benzodiazepínicos da matéria cinzenta periaquedutal na modulação da ansiedade em camundongos ingênuos e reexpostos ao labirinto em cruz elevado
(Universidade Federal de São Carlos, 2006-11-10)
It is well known that the previous experience to the elevated plus-maze (EPM)
increases the avoidance of rodents to the open arms and impairs the anxiolytic-like effect of
benzodiazepines in a subsequent exposure to the ...
Envolvimento de neurotransmissões angiotensinérgicas no núcleo medial da amídala nas respostas cardiovasculares e ansiogênica ao estresse de restrição em ratos
(Universidade Federal de São Carlos, 2020-09-04)
Limbic structures participate in the control of physiological responses related to stress, and the medial amigdaloid nucleus (MeA) has been demonstrated as an area of the central nervous system involved in the control these ...
Papel dos receptores vaniloides TRPV1 da matéria cinzenta periaquedutal na ansiedade e na antinocicepção induzida pelo medo em camundongos
(Universidade Federal de São Carlos, 2013-05-03)
When confronted with fear situations rodents exhibit behavioral (e.g., fight, flight, immobility and vocalization) and neurovegetative (tachycardia, hypertension and defecation) responses that characterize the defense ...
O ondansetron, antagonista dos receptores 5-HT3, reverte o efeito ansiolítico das injeções de midazolam no hipocampo ventral de camundongos expostos aos modelos labirinto em cruz elevado (LCE) e exposição ao rato
(Universidade Federal de São Carlos, 2012-02-10)
Animal models have often been used to investigate the neurobiology of emotional states (fear and anxiety). In this sense, the elevated plus maze (EPM) and the rat exposure test are effective to evaluate these states and ...
Efeito ansiolítico do ondansetron, antagonista dos receptores 5-HT3, injetado na amídala de camundongos submetidos à exposição e reexposição no labirinto em cruz elevado
(Universidade Federal de São Carlos, 2011-03-02)
Against of stimuli that are dangerous, animals manifest defense reactions that cause fear and anxiety. These stimuli activate the serotonergic system, which sends projections to structures involved in defense mechanisms ...
Avaliação neuropsicofarmacológica dos mecanismos CRFérgicos na amídala, nas reações de defesa de camundongos pré-expostos à derrota social
(Universidade Federal de São Carlos, 2015-05-15)
Stressful situations are a real or potential threat for psychological or physiological integrity of an individual. The underlying neurobiological substrates involved in these processes were substancially investigated through ...
Análise etofarmacológica de um novo teste de interação presa-predador : o teste de exposição ao rato
(Universidade Federal de São Carlos, 2013-05-23)
The rat exposure test (RET) is a new ethological model of predator-prey with interactions between the rat and the mouse. The RET allows the expression of defensive behaviors in the prey. The experimental apparatus is ...
Papel do cortex pré-frontal medial no comportamento defensivo de camundongos : avaliação farmacológica da lateralização funcional
(Universidade Federal de São Carlos, 2017-04-13)
Stressful situations are risk factors to the development of neuropsychiatric diseases, as anxiety disorders. However, not everyone who experiences stressful events develops stress-related illness. That is due to the existence ...