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	Provedor de dados BJMBR (3) Autor Futuro Neto,H.A. (3) Silva,N.F. (3) Campos,R.R. (2) Pires,J.G.P. (2) Bergamaschi,C.T. (1) Carillo,B.A. (1) Dantas,M.A. (1) Oliveira-Sales,E.B. (1) Silva,A.M. (1) Mais... Palavra-chave Blood pressure (3) Caudal pressor area (3) Ventrolateral medulla (2) Electrical stimulation (1) Excitatory amino acid receptors (1) Glutamate (1) Kynurenic acid (1) L-glutamate (1) Raphe nuclei (1) Rat (1) Respiration (1) Rostral ventrolateral medulla (1) Sympathetic vasomotor tone (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Info:eu-repo/semantics/other (1) Ano 2008 (1) 2002 (1) 2001 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Excitatory amino acid receptor blockade within the caudal pressor area and rostral ventrolateral medulla alters cardiovascular responses to nucleus raphe obscurus stimulation in rats BJMBR Silva,N.F.; Pires,J.G.P.; Dantas,M.A.; Futuro Neto,H.A.. Pressor responses elicited by stimulation of the nucleus raphe obscurus (NRO) depend on the integrity of the rostral ventrolateral medulla (RVLM). Therefore, to test the participation of excitatory amino acid (EAA) receptors in the cardiovascular responses evoked by NRO stimulation (1 ms, 100 Hz, 40-70 µA, for 10 s), the EAA antagonist kynurenic acid (Kyn) was microinjected at different sites in the ventrolateral medullar surface (2.7 nmol/200 nl) of male Wistar rats (270-320 g, N = 39) and NRO stimulation was repeated. The effects of NRO stimulation were: hypertension (deltaMAP = +43 ± 1 mmHg, P<0.01), bradycardia (deltaHR = -30 ± 7 bpm, P<0.01) and apnea. Bilateral microinjection of Kyn into the RVLM, which did not change baseline parameters,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Raphe nuclei; Electrical stimulation; Ventrolateral medulla; Caudal pressor area; Excitatory amino acid receptors; Kynurenic acid; Blood pressure. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002001000019 Cardiovascular and respiratory responses to microinjection of L-glutamate into the caudal pressor area in conscious and anesthetized rats BJMBR Silva,N.F.; Pires,J.G.P.; Campos,R.R.; Futuro Neto,H.A.. The role of the caudal pressor area (CPA) in the maintenance of vasomotor tonus in anesthetized and decerebrate animals has been clearly established. In conscious animals, however, the participation of CPA in the cardiovascular control remains to be fully elucidated. In the present study, unilateral L-glutamate (L-Glu) (10 and/or 20 nmol/70 nl) microinjection into CPA, in conscious male Wistar rats (250-280 g) caused a significant increase in mean arterial blood pressure (MAP; control: 112 ± 1.9 mmHg; after 20 nmol L-Glu: 139 ± 4.5 mmHg, N = 12, P<0.05) and respiratory rate (control: 81 ± 3.5 breaths/min; after 10 nmol L-Glu: 92 ± 3 breaths/min, P<0.05; after 20 nmol L-Glu: 104 ± 5 breaths/min, N = 6, P<0.05). The subsequent anesthesia with... Tipo: Info:eu-repo/semantics/other Palavras-chave: Caudal pressor area; Ventrolateral medulla; Blood pressure; L-glutamate; Respiration. Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001001200013 Role of the caudal pressor area in the regulation of sympathetic vasomotor tone BJMBR Campos,R.R.; Carillo,B.A.; Oliveira-Sales,E.B.; Silva,A.M.; Silva,N.F.; Futuro Neto,H.A.; Bergamaschi,C.T.. It is well known that the ventrolateral medulla contains neurons involved in the tonic and reflex control of the cardiovascular system. Two regions within the ventrolateral medulla were initially identified: the rostral ventrolateral medulla (RVLM) and the caudal ventrolateral medulla (CVLM). Activation of the RVLM raises arterial blood pressure and sympathetic nerve activity, and activation of the CVLM causes opposite effects. The RVLM premotor neurons project directly to sympathetic preganglionic neurons and are involved in the maintenance of resting sympathetic vasomotor tone. A significant proportion of tonic activity in the RVLM sympathetic premotor neurons is driven by neurons located in a third region of the ventrolateral medulla denominated caudal... Tipo: Info:eu-repo/semantics/article Palavras-chave: Rostral ventrolateral medulla; Rat; Glutamate; Blood pressure; Caudal pressor area; Sympathetic vasomotor tone. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000700002 Registros recuperados: 3 Primeira ... 1 ... Última

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