Renal Sympathetic Nerve Activity
Mostrando 1-12 de 53 artigos, teses e dissertações.
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1. Angiotensin-(1-7) relieved renal injury induced by chronic intermittent hypoxia in rats by reducing inflammation, oxidative stress and fibrosis
We aimed to study the renal injury and hypertension induced by chronic intermittent hypoxia (CIH) and the protective effects mediated by angiotensin 1-7 [Ang(1-7)]. We randomly assigned 32 male Sprague-Dawley rats (body weight 180-200 g) to normoxia control, CIH, Ang(1-7)-treated normoxia, and Ang(1-7)-treated CIH groups. Systolic blood pressure (SBP) was mo
Braz J Med Biol Res. Publicado em: 09/01/2017
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2. Effects of acute administration of selective serotonin reuptake inhibitors on sympathetic nerve activity
Serotonergic mechanisms have an important function in the central control of circulation. Here, the acute effects of three selective serotonin (5-HT) reuptake inhibitors (SSRIs) on autonomic and cardiorespiratory variables were measured in rats. Although SSRIs require 2-3 weeks to achieve their full antidepressant effects, it has been shown that they cause a
Braz J Med Biol Res. Publicado em: 30/05/2014
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3. Efeitos do exercício físico prévio sobre a função renal, disfunção autonômica e atividade nervosa simpática renal no diabetes mellitus experimental, em ratos / Effects of previous exercise on renal function, autonomic dysfunction and renal sympathetic nerve activity in experimental diabetes, in rats
Background: The exercise training (ET) has been recognized as an important therapeutic intervention for the chronic degenerative diseases such as Diabetes Mellitus (DM) that cause renal and cardiovascular complications. However, little is known if previous ET intervention modulates the physiological and medical impact caused by these dysfunctions. We investi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2011
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4. Atividade vasomotora simpática em um modelo experimental de obesidade induzida por dieta hiperlipídica / Sympathetic vasomotor activity in an experimental model of obesity induced by high fat diet
A obesidade está relacionada a problemas cardiovasculares, como hipertensão arterial (HA) e suas co-morbidades, bem como, a alterações metabólicas como resistência à insulina, hiperglicemia, dislipidemias, dentre outras alterações típicas da síndrome metabólica (SM). Existem evidências de que a obesidade está relacionada ao aumento da atividade
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/01/2011
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5. Efeito agudo do exercicío físico aeróbico na atividade nervosa simpática periférica de pacientes portadores de doença renal crônica - estágio III / Acute effectof aerobic exercise in the muscle sympathetic nerve activity in patients with chronic kidney disease stage III
A principal causa de mortalidade nos pacientes com doença renal crônica é a doença cardiovascular. A alta prevalência de hipertensão arterial nestes pacientes e sua relação com riscos cardiovasculares são indiscutíveis. A doença renal crônica é caracterizada pela hiperatividade simpática, o que contribui para gênese ou agravo da hipertensão a
Publicado em: 2010
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6. Cardiovascular effects of chronic vitamin C treatment in the renovascular hypertension in Wistar rats. / Efeitos cardiovasculares ao tratamento crônico com vitamina C na hipertensão renovascular em ratos Wistar.
A hiperatividade vasomotora simpática e a disfunção do reflexo barorreceptor (RB) estão envolvidas no desenvolvimento e manutenção da hipertensão arterial (HA) renovascular de Goldblatt 2 rins, 1 clipe (2R-1C). Este modelo experimental de HA é considerado dependente da ativação do sistema renina-angiotensina, sendo que a interação da angiotensina
Publicado em: 2010
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7. Evidence that blood pressure remains under the control of arterial baroreceptors in renal hypertensive rats
The purpose of the present study was to determine the range of the influence of the baroreflex on blood pressure in chronic renal hypertensive rats. Supramaximal electrical stimulation of the aortic depressor nerve and section of the baroreceptor nerves (sinoaortic denervation) were used to obtain a global analysis of the baroreceptor-sympathetic reflex in n
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-10
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8. Influence of renal denervation on blood pressure, sodium and water excretion in acute total obstructive apnea in rats
Obstructive apnea (OA) can exert significant effects on renal sympathetic nerve activity (RSNA) and hemodynamic parameters. The present study focuses on the modulatory actions of RSNA on OA-induced sodium and water retention. The experiments were performed in renal-denervated rats (D; N = 9), which were compared to sham (S; N = 9) rats. Mean arterial pressur
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-02
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9. Respostas cardiovasculares à administração de Vitamina C no modelo de hipertensão renovascular experimental. / Cardiovascular effects in response to vitamin C administration in experimental renovascular hypertension model.
An exaggerated production of reactive oxygen species (ROS) has been observed in different animal models of arterial hypertension (AH), among then the renovascular 2Kidney-1Clip (2K-1C) model. One of the purposes of the present Thesis was to evaluate if the endovenous (EV) administration of ascorbic acid (Vitamin C), an antioxidant, modifies the cardiovascula
Publicado em: 2006
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10. 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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11. Estudo da filtração glomerular e da manipulação tubular renal de sodio em animais normotensos e hipertensos submetidos a injeção intracerebroventricular de solução salina hipertonica : influencia da denervação renal bilateral
The mechanism by which blood pressure has risen in the spontaneously hypertensive rats (SHR) strain remains to be elucidated. Besides, there is a surprising lack of experimental data on the natriuretic mechanisms induced by intracerebroventricular (i.c.v.) injection of hypertonic saline in SHR. In the current study, we have hypothesized that SHR hypertension
Publicado em: 2005
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12. Chronic experimental myocardial infarction produces antinatriuresis by a renal nerve-dependent mechanism
The present study focused on the role of sympathetic renal nerve activity, in mediating congestive heart failure-induced sodium retention following experimental chronic myocardial infarction. Groups of male Wistar rats (240-260 g) were studied: sham-operated coronary ligation (CON3W, N = 11), coronary ligation and sham-operated renal denervation (INF3W, N =
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-02