Perfused Pressure Urine Flow
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. ESTUDO DOS EFEITOSDA BRADICININA SOBRE A FUNÇÃO RENAL DE RATOS / STUDY OF EFEITOSDA bradykinin ON RENAL FUNCTION IN RATS
O sistema calicreína-cinina corresponde a uma cascata metabólica endógena, que resulta na liberação de cininas vasoativas, das quais a mais conhecida é a bradicinina (BK). Esta cinina está envolvida tanto na regulação da função renal, como também da pressão arterial, estimulando efeito hipotensor, natriurético e elucidados. O presente trabalho
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/04/2011
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2. AvaliaÃÃo dos efeitos renais da fraÃÃo L-aminoÃcido Oxidase isolada do veneno da serpente Bothrops marajoensis. / Assessment of renal effects of L-amino acid oxidase fraction isolated from snake Bothrops marajoensis venom.
There are about 3.000 species of snakes worldwide, but only 10 to 14% are venomous. Among South American countries, Brazil is the one with the largest number of accidents, with approximately 20.000 snakebites each year. According to the Department of Health of Brazil, the genus Bothrops are the main involved in snakebites in the country. Acute renal failure
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2010
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3. Estudo dos efeitos da alta ingestÃo de cloreto de sÃdio por via oral sobre o metabolismo diÃrio e funÃÃo renal de ratos. / Study of effects on the daily metabolism and the renal function of rats under high oral ingestion of sodium chloride.
Guanylin (GN), uroguanylin (UGN), and the bacterial heat-stable enterotoxin (ST) peptides comprise a new family of cyclic guanosine 3â-5â monophosphate (cGMP)-regulating agonist. Ingestion of a salt meal induces secretion of GN and UGN into the intestinal lumen, where they inhibit Na+ absorption and induces Cl-, HCO3- , and water secretion. Simultaneously,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/01/2009
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4. AÃÃes farmacolÃgicas da ser-thr-lys-guanilina em sistema de perfusÃo de rim isolado de rato / Pharmacological actions of ser-thr-lys-guanilina in isolated perfused rat kidney
Guanylin and uroguanylin are members of a family of peptides that stimulates cGMP production in several organic tissues, as intestine, kidney, airway, linfonodes, testis, brain and adrenal medulla (Field et a.l., 1978; Forte et al., 1988, 1989; Hamra et al., 1993; Schulz et al., 1992). Their 15 amino acid structures have been identified from rat intestine an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/07/2005
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5. Restoration and maintenance of glomerular filtration by mannitol during hypoperfusion of the kidney
Glomerular filtration (GF) during progressive reduction of renal perfusion pressure by aortic clamping was studied in hydropenic rats and in rats infused with isotonic saline, hypertonic saline, or mannitol. As judged by visual observation of Lissamine green movements in superficial nephrons. GF was absent in hydropenic or saline-loaded rats at 40 mm Hg aort
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6. Experimental glomerulonephritis in the isolated perfused rat kidney.
The development of immune deposits on the subepithelial surface of the glomerular capillary wall was studied in isolated rat kidneys perfused at controlled perfusion pressure, pH, temperature, and flow rates with recirculating oxygenated perfusate containing bovine serum albumin (BSA) in buffer and sheep antibody to rat proximal tubular epithelial cell brush
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7. The reflex effects of changes in carotid sinus pressure upon renal function in dogs.
In chloralose-anaesthetized and artificially ventilated dogs, the carotid sinuses were vascularly isolated and perfused with arterial blood. Mean aortic pressure was held constant at 100 +/- 2 mmHg (mean +/- S.E. of mean, n = 19) by means of a pressure bottle connected to the aorta. Both vagus nerves were sectioned in the neck and propranolol hydrochloride (
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8. Mechanism of hyperreninemia in the potassium-depleted rat.
Although dietary potassium deficiency (KD) results in an increase in plasma renin activity (PRA), the mechanism of this effect has not been elucidated. In the present study, isolated kidneys from normal rats or from rats made KD by diet were perfused at constant pressure (120 mm Hg) with a Krebs-Ringer-Bicarbonate medium containing albumin. KD led to an incr
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9. Modification of carotid chemoreceptor-induced changes in renal haemodynamics and function by carotid baroreflex in dogs.
1. Mongrel dogs were anaesthetized with thiopental sodium and chloralose and artificially ventilated. The carotid sinus regions were vascularly isolated and perfused either with arterial or mixed (arterial and venous) blood (PO2, 44.2 +/- 3.3 mmHg, mean +/- S.E.M.) to stimulate the chemoreceptors. Cervical vagosympathetic trunks were ligated and atenolol (2
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10. Interrelation between baroreceptor and macula densa mechanisms in the control of renin secretion.
1. It was the aim of this study to examine the interrelation between 'baroreceptor' function and the macula densa signal in the control of renin secretion from the kidneys. To this end we investigated the effects of frusemide and bumetanide, two different inhibitors of the macula densa Na(+)-K(+)-2Cl- cotransport, on pressure-dependent renin release from iso
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11. Effects of left atrial receptor stimulation on carotid chemoreceptor-induced renal responses in dogs.
1. Dogs were anaesthetized with thiopentone sodium and alpha-chloralose and artificially ventilated. The carotid sinus regions were vascularly isolated and perfused with arterial or venous blood to stimulate the chemoreceptors. Left atrial receptors were stimulated by distending four balloons, three in the left pulmonary vein-atrial junctions and one in the
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12. Effects of small changes in carotid sinus pressure on renal haemodynamics and function in dogs.
1. In dogs anaesthetized with chloralose and artificially ventilated, the carotid sinuses were vascularly isolated and perfused with arterial blood. Mean aortic pressure was held constant at 111 +/- 2 mmHg (mean +/- S.E.M., n = 18) by means of a pressure bottle connected to the aorta and a Starling resistance. Both vagus nerves were sectioned in the neck and