Hypothalamus Paraventricular Nucleus
Mostrando 1-12 de 64 artigos, teses e dissertações.
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1. 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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2. Importância do tecido adiposo marrom na ativação da termogênese induzida pela injeção central do C75, um inibidor da ácido graxo sintase / Importance of brown adipose tissue in the activation of thermogenesis induced by central injection of C75, a fatty acid synthase inhibitor
C75, a synthetic inhibitor of fatty acid synthase, causes anorexia and weight loss in rodents, but the underlying mechanisms are not totally known. Thus, the hypothesis tested in this work was that brown adipose tissue (BAT), an organ with important role for control of thermogenesis, could be involved in the anti-obesity effects of fatty acid synthase inhibi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/08/2012
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3. Angiotensin-II-induced reactive oxygen species along the SFO-PVN-RVLM pathway: implications in neurogenic hypertension
Neurogenic hypertension has been the subject of extensive research worldwide. This review is based on the premise that some forms of neurogenic hypertension are caused in part by the formation of angiotensin-II (Ang-II)-induced reactive oxygen species along the subfornical organ-paraventricular nucleus of the hypothalamus-rostral ventrolateral medulla pathwa
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-09
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4. Cardiovascular and autonomic modulation by the central nervous system after aerobic exercise training
The autonomic nervous system plays a key role in maintaining homeostasis under normal and pathological conditions. The sympathetic tone, particularly for the cardiovascular system, is generated by sympathetic discharges originating in specific areas of the brainstem. Aerobic exercise training promotes several cardiovascular adjustments that are influenced by
Brazilian Journal of Medical and Biological Research. Publicado em: 2011-09
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5. Estradiol-induced hypophagia is associated with the differential mRNA expression of hypothalamic neuropeptides
Estradiol participates in the control of energy homeostasis, as demonstrated by an increase in food intake and in body weight gain after ovariectomy in rats. In the present study, female Wistar rats (200-230 g, N = 5-15 per group), with free access to chow, were individually housed in metabolic cages. We investigated food intake, body weight, plasma leptin l
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-08
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6. Mecanismos geradores da atividade vasomotora simpática na hipertensão arterial renovascular em ratos Wistar / Mechanisms of vasomotor sympathetic activity generation in the renovascular hypertension in Wistar rats
A Hipertensão arterial (HA) renovascular está associada com uma hiperatividade simpática e prejuízo na sensibilidade reflexa do barorreceptor determinadas por aumento na Angiotensina II (Ang II) circulante. O objetivo da presente Tese foi avaliar o papel do estresse oxidativo na geração e manutenção da HA 2 Rins-1Clipe. Ratos Machos Wistar foram util
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/06/2009
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7. Effect of cyhalothrin on Ehrlich tumor growth and macrophage activity in mice
Cyhalothrin, a pyrethroid insecticide, induces stress-like symptoms, increases c-fos immunoreactivity in the paraventricular nucleus of the hypothalamus, and decreases innate immune responses in laboratory animals. Macrophages are key elements in cellular immune responses and operate at the tumor-host interface. This study investigated the relationship among
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-10
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8. Efeitos da administração de cialotrina sobre a atividade de macrófagos peritoneais de ratos / Effects of cyhalothrin administration on peritoneal macrophage activity of rats
Synthetic pyrethroids, particularly those of type II, such as cyhalothrin, are extensively used in agriculture for the control of a broad range of ectoparasites in farm animals. However, in Brazil and some other countries, these pyrethroids have also been used in public health, for the control of insects that are known to be vectors of diseases such as dengu
Publicado em: 2006
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9. Neuroanatomical and cellular substrates of the behavior hypergrooming induced by microinjection of oxytocin in central nucleus of amygdala, an experimental model of obsessive-compulsive disorder / Substratos neuroanatômicos e celulares do comportamento de autolimpeza exacerbada (hypergrooming) induzido pela injeção de ocitocina no núcleo central da amígdala, um modelo experimental de transtorno obsessivo-compulsivo
Oxytocin (OT) is a neurosecretory nonapeptide synthesized in hypothalamic cells that project to the neurohypophysis as well as to widely distributed sites in the central nervous system. Central OT microinjections induce a variety of cognitive, sexual, reproductive, grooming and affiliative behaviors in animals. Obsessive-compulsive disorder (OCD) includes a
Publicado em: 2005
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10. Efeitos da lesão do núcleo do trato solitário comissural sobre a ingestão de água e sólido.
The central nervous system (CNS) has an important function in the regulation of homeostatic mechanisms controlling the volemia and osmolality of the body fluid. The nucleus of the tract solitary (NTS) is the primary site of the cardiovascular afferents and peripheral osmoreceptors. From to NTS, the information about arterial blood pressure, extracellular flu
Publicado em: 2005
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11. Importância da região AV3V para as respostas pressoras produzidas pela ativação de áreas bulbares.
Cardiovascular responses are integrated at different levels of the central nervous system (CNS). Particularly the hypothalamus and brainstem areas are involved in the control of autonomic responses and among them the cardiovascular responses. Different areas in the brainstem, like the nucleus tract solitarii (NTS), the rostroventrolateral medulla (RVLM), cau
Publicado em: 2005
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12. Efeitos da desconexão hipotalâmica aguda e crônica sobre as respostas pressoras induzidas pela injeção central de salina hipertônica, carbacol e angiotensina II em ratos.
Several anatomical and functional studies have demonstrated that the paraventricular nucleus of the hypothalamus (PVN) constitutes a neuroendocrine center. The PVN is intimately related to the regulation of the sympathetic nerve activity and vasopressin secretion. Intracerebroventricular injections of angiotensin II (ANG II), carbachol and hypertonic saline
Publicado em: 2005