Home Itens selecionados Provedores de dados OAI Créditos Sobre Ajuda

			Busca avançada
	Provedor de dados BJMBR (2) Autor Krieger,E.M. (2) Silva,G.J.J. (2) Atala,M.M. (1) Cardoso,L. (1) Cestari,I.A. (1) Consolim-Colombo,F.M. (1) Drager,L.F. (1) Krieger,J.E. (1) Lessa,P.S. (1) Lopes,H.F. (1) Moreira,E.D. (1) Trindade Jr.,A.S. (1) Ushizima,M.R. (1) Mais... Palavra-chave Aortic depressor nerve (1) Arterial baroreceptor (1) Autoregressive model (1) Electrical stimul (1) Fast Fourier transform (1) Hypertension (1) Pharmacological blockade (1) Renal hypertension (1) SHR (1) Sinoaortic denervation (1) Tilt test (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Info:eu-repo/semantics/other (1) Ano 2009 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Evidence that blood pressure remains under the control of arterial baroreceptors in renal hypertensive rats BJMBR Trindade Jr.,A.S.; Moreira,E.D.; Silva,G.J.J.; Krieger,E.M.. 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 normotensive control and in chronic (2 months) 1-kidney, 1-clip hypertensive rats. The fall in blood pressure produced by electrical baroreceptor stimulation was greater in renal hypertensive rats than in normotensive controls (right nerve: -47 ± 8 vs -23 ± 4 mmHg; left nerve: -51 ± 7 vs -30 ± 4 mmHg; and both right and left nerves: -50 ± 8 vs -30 ± 4 mmHg; P < 0.05). Furthermore, the increase in... Tipo: Info:eu-repo/semantics/other Palavras-chave: Arterial baroreceptor; Renal hypertension; Sinoaortic denervation; Aortic depressor nerve; Electrical stimul. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001000013 Critical analysis of autoregressive and fast Fourier transform markers of cardiovascular variability in rats and humans BJMBR Silva,G.J.J.; Ushizima,M.R.; Lessa,P.S.; Cardoso,L.; Drager,L.F.; Atala,M.M.; Consolim-Colombo,F.M.; Lopes,H.F.; Cestari,I.A.; Krieger,J.E.; Krieger,E.M.. The autonomic nervous system plays an important role in physiological and pathological conditions, and has been extensively evaluated by parametric and non-parametric spectral analysis. To compare the results obtained with fast Fourier transform (FFT) and the autoregressive (AR) method, we performed a comprehensive comparative study using data from humans and rats during pharmacological blockade (in rats), a postural test (in humans), and in the hypertensive state (in both humans and rats). Although postural hypotension in humans induced an increase in normalized low-frequency (LFnu) of systolic blood pressure, the increase in the ratio was detected only by AR. In rats, AR and FFT analysis did not agree for LFnu and high frequency (HFnu) under basal... Tipo: Info:eu-repo/semantics/article Palavras-chave: Fast Fourier transform; Autoregressive model; Hypertension; SHR; Pharmacological blockade; Tilt test. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000400012 Registros recuperados: 2 Primeira ... 1 ... Última

Empresa Brasileira de Pesquisa Agropecuária - Embrapa Todos os direitos reservados, conforme Lei n° 9.610 Política de Privacidade Área restrita		Embrapa Parque Estação Biológica - PqEB s/n° Brasília, DF - Brasil - CEP 70770-901 Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco