Search Results - "BONAGAMBA, L"

Synaptic profile of nucleus tractus solitarius neurons involved with the peripheral chemoreflex pathways by Accorsi-Mendonça, D, Castania, J.A, Bonagamba, L.G.H, Machado, B.H, Leão, R.M

“…Abstract The glomus cells in the carotid bodies (CB) detect alterations in pH and pCO2 and low pO2 level in arterial blood. The carotid sinus nerve conveys the…”
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Intermittent activation of peripheral chemoreceptors in awake rats induces Fos expression in rostral ventrolateral medulla–projecting neurons in the paraventricular nucleus of the hypothalamus by Cruz, J.C, Bonagamba, L.G.H, Machado, B.H, Biancardi, V.C, Stern, J.E

“…Abstract Despite the well-established sympathoexcitation evoked by chemoreflex activation, the specific sub-regions of the CNS underlying such sympathetic…”
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NMDA receptors in NTS are involved in bradycardic but not in pressor response of chemoreflex by Haibara, A S, Colombari, E, Chianca, Jr, D A, Bonagamba, L G, Machado, B H

“…Activation of carotid chemoreceptors with intravenous potassium cyanide (KCN) produces increases in arterial pressure, bradycardia, and tachypnea. In the…”
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Mechanisms of pressor and bradycardic responses to L-glutamate microinjected into the NTS of conscious rats by Colombari, E, Bonagamba, L G, Machado, B H

“…Microinjection of increasing doses of L-glutamate (L-Glu, 0.03-5.0 nmol/100 nl) into the nucleus tractus solitarii (NTS) produced a dose-related pressor and…”
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Bradycardic and hypotensive responses to microinjection of l-glutamate into the lateral aspect of the commissural NTS are blocked by an NMDA receptor antagonist by Canesin, R.O., Bonagamba, L.G.H., Machado, B.H.

“…Baroreflex activation by phenylephrine infusion produces a bradycardic response while microinjection of l-glutamate into the most lateral aspect of the…”
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SEROTONIN3 receptor stimulation in the nucleus tractus solitarii activates non-catecholaminergic neurons in the rat ventrolateral medulla by NOSJEAN, A, CALLERA, J. C, BONAGAMBA, L, MACHADO, B, HAMON, M, LAGUZZI, R

“…The present study was performed to determine whether or not the increased arterial pressure triggered by 5-HT(3) receptor stimulation in the nucleus tractus…”
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Cardiovascular effects of microinjection of low doses of serotonin into the NTS of unanesthetized rats by Callera, J C, Bonagamba, L G, Sévoz, C, Laguzzi, R, Machado, B H

“…In the present study, we analyzed in conscious rats the effects of microinjections of serotonin (5-HT; pmol range) into the nucleus of the solitary tract (NTS)…”
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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 by Zhang, C, Bonagamba, L G, Machado, B H

“…The neurotransmission of the chemoreflex in the nucleus tractus solitarii (NTS), particularly of the sympatho-excitatory component, is not completely…”
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Bradycardic responses to microinjection of N-methyl-D-aspartate into the nucleus tractus solitarius are inhibited by local activation of 5-HT3 receptors by BONAGAMBA, L. G. H, SEVOZ-COUCHE, C, N'DIAYE, A, UYGUN-LOUVET, K, CALLERA, J.-C, MACHADO, B. H, HAMON, M, LAGUZZI, R

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Microinjection of S-nitrosocysteine into the nucleus tractus solitarii of conscious rats decreases arterial pressure but L-glutamate does not by Machado, B H, Bonagamba, L G

“…Unilateral microinjection of L-glutamate into the nucleus tractus solitarii of conscious rats increased arterial pressure and caused bradycardia while…”
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Aortic baroreceptors play a predominant role in the regulation of hindlimb vascular resistance in rats by Machado, B H, Bonagamba, L G, Castania, J A, Menani, J V

“…In previous studies using bilateral carotid occlusion in conscious freely moving rats we suggested that aortic baroreceptors may play a more important role in…”
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Cardiovascular responses to microinjection of trans-(+/-)-ACPD into the NTS were similar in conscious and chloralose-anesthetized rats by Machado, B H, Bonagamba, L G

“…The changes in mean arterial pressure (MAP) and heart rate (HR) in response to the activation of metabotropic receptors in the nucleus tractus solitarii (NTS)…”
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Glycine blocks the pressor response to L-glutamate microinjected into the nucleus tractus solitarii of conscious rats by Mauad, H, Colombari, E, Bonagamba, L G, Machado, B H

“…Microinjection of L-glutamate into the nucleus tractus solitarii (NTS) of conscious freely moving Wistar rats (240-260 g) produces pressor (+48 +/- 4 mmHg) and…”
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Changes in vascular resistance during carotid occlusion in normal and baroreceptor-denervated rats by MACHADO, B. H, BONAGAMBA, L. G. H, CASTANIA, J. A, MENAMI, J. V

“…In the present study, we investigated changes in mesenteric, renal, and hindquarter vascular resistance during the pressor response produced by bilateral…”
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Angiotensin II As a Modulator of Baroreceptor Reflexes in the Brainstem of Conscious Rats by Michelini, Lisete C, Bonagamba, Leni G.H

“…The effect of microinjection into the nucleus tractus solitarii (NTS) of angiotensin II (Ang II) on baroreceptor control of heart rate (HR) in conscious,…”
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The gain of the baroreflex bradycardia is reduced by microinjection of NMDA receptor antagonists into the nucleus tractus solitarii of awake rats by Frigero, Mateus, Bonagamba, Leni G.H., Machado, Benedito H.

“…The baroreflex activation with phenylephrine infusion produces a bradycardic response. In the present study, the role of NMDA receptors in the nucleus tractus…”
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Involvement of the paraventricular nucleus of the hypothalamus in the pressor response to chemoreflex activation in awake rats by Olivan, Marcelo V., Bonagamba, Leni G.H., Machado, Benedito H.

“…Chemoreflex activation with potassium cyanide (KCN, i.v.) produces pressor and bradycardic responses in awake rats in addition to the tachypneic response. In…”
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Sympathoexcitatory neurotransmission of the chemoreflex in the NTS of awake rats by Haibara, A S, Bonagamba, L G, Machado, B H

“…Cardiovascular responses to chemoreflex activation by potassium cyanide (KCN, 20 microgram/rat iv) were analyzed before and after the blockade of ionotropic or…”
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Serotonin(3) receptor stimulation in the nucleus tractus solitarii activates non-catecholaminergic neurons in the rat ventrolateral medulla by Nosjean, A, Callera, J C, Bonagamba, L, Machado, B, Hamon, M, Laguzzi, R

“…The present study was performed to determine whether or not the increased arterial pressure triggered by 5-HT(3) receptor stimulation in the nucleus tractus…”
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Microinjection of L-glutamate into the nucleus tractus solitarii increases arterial pressure in conscious rats by Machado, B H, Bonagamba, L G

“…Microinjection of L-glutamate into the nucleus tractus solitarii (NTS) of anesthetized rats produces a fall in mean arterial pressure (MAP) similar to that…”
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