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	Provedor de dados BJMBR (2) Autor Machado,B.H. (2) Bonagamba,L.G.H. (1) Dias-dos-Santos,J.R. (1) Zhang,C. (1) Palavra-chave Cardiovascular regulation (2) Arterial pressure oscillations (1) Autonomic regulation (1) Carotid chemoreceptors (1) Deep breaths (1) NK-1 receptors (1) Substance P (1) Tachykinins (1) Ventilation (1) Ventilatory patterns (1) Wakefulness-sleep cycle (1) Whole body plethysmography (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2000 (1) 1997 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Blockade of NK-1 receptors in the lateral commissural nucleus tractus solitarii of awake rats had no effect on the cardiovascular responses to chemoreflex activation BJMBR Zhang,C.; Bonagamba,L.G.H.; Machado,B.H.. The neurotransmission of the chemoreflex in the nucleus tractus solitarii (NTS), particularly of the sympatho-excitatory component, is not completely understood. There is evidence that substance P may play a role in the neurotransmission of the chemoreflex in the NTS. Microinjection of substance P (50 pmol/50 nl, N = 12, and 5 nmol/50 nl, N = 8) into the commissural NTS of unanesthetized rats produced a significant increase in mean arterial pressure (101 ± 1 vs 108 ± 2 and 107 ± 3 vs 115 ± 4 mmHg, respectively) and no significant changes in heart rate (328 ± 11 vs 347 ± 15 and 332 ± 7 vs 349 ± 13 bpm, respectively) 2 min after microinjection. Previous treatment with WIN, an NK-1 receptor antagonist (2.5 nmol/50 nl), microinjected into the NTS of a specific... Tipo: Info:eu-repo/semantics/article Palavras-chave: Tachykinins; Cardiovascular regulation; Carotid chemoreceptors; Autonomic regulation; NK-1 receptors; Substance P. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000001100018 Cardiovascular and respiratory changes during slow-wave sleep in rats are associated with electrocorticogram desynchronization BJMBR Dias-dos-Santos,J.R.; Machado,B.H.. In awake rats a single recurrent larger tidal volume (deep breaths) occurs at regular intervals, followed by oscillations in arterial pressure and heart rate. In the present study we recorded the changes in blood pressure, heart rate and ventilation during the wakefulness-sleep cycle identified by electrocorticographic records in order to determine whether the deep breaths and cardiovascular oscillations were associated with changes in the electrocorticogram. During several episodes of slow-wave sleep (SWS) in 7 rats the deep breaths and oscillations in arterial pressure and heart rate were preceded by SWS desynchronization. The interval between deep breaths during SWS was 71 ± 4 s, the period between initial desynchronization and the generation of deep... Tipo: Info:eu-repo/semantics/article Palavras-chave: Wakefulness-sleep cycle; Ventilation; Cardiovascular regulation; Deep breaths; Ventilatory patterns; Arterial pressure oscillations; Whole body plethysmography. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001100018 Registros recuperados: 2 Primeira ... 1 ... Última

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