Sodium Depletion
Mostrando 13-24 de 168 artigos, teses e dissertações.
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13. Efeitos da injeção de moxonidina no controle da ingestão de sódio e regulação cardiovascular.
Deficit of water and sodium in the body is detected by receptors located in different parts of the body. These receptors or hormones signalize to specific areas in the brain that control renal responses and water and sodium intake. Among these areas are: organum vasculosum of the lamina terminalis (OVLT), subfornical organ (SFO), anteroventral third ventricl
Publicado em: 2003
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14. Tensile bond strength evaluation of er:yag laser irradiated bovine dentin associated to different treatments. scanning electron microscopy analisis / Avaliação da resistência à tração da dentina bovina irradiada com laser de Er:YAG combinada a diferentes tratamentos. Análise das superfícies pela microscopia eletrônica de varredura
Under scientific improvements in dentistry towards the perfect cavity sealing and adhesion, the development of materials, techniques and the better understanding of dental substrate features, the Er:YAG laser (2,94 mm) technology plays a role as an efficient tool in dentin surface treatment, performed in low energy density, whether isolated or in association
Publicado em: 2003
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15. Crisotila na degradação de dodecilbenzenosulfonato de sodio
Catalytic properties of chrysotile, a mineral fibrous magnesium-silicate, were studied for sodium dodecylbenzenesulfonate (DBS) degradation, a typical pollutant in wastewater. AlI experiments were performed at least in sample and measurement triplicates. Preliminary results showed a depletion of 85% in the surfactant concentration ([DBS]0: 0.16x10 mol/L; 250
Publicado em: 1999
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16. Espectroscopia de alta resolução num feixe supersônico de sódio / Ultra-high resolution spectroscopy in a supersonic sodium beam
This work reports measurements in the vibrational bands of the A1∑+u→X1∑+g transition for Sodium dimer, produced in a supersonic expansion of the metal vapor into the vacuum. For the determination of the molecular constants we used righ-resolution laser spectroscopy techniques: Resonance Fluorescence, Stimulated Raman and Optical Depletion.
Publicado em: 1993
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17. Salt appetite in the pigeon in response to pharmacological treatments.
1. In response to furosemide-induced sodium depletion pigeons showed a robust salt appetite. Following the 1st depletion they started to ingest 3% NaCl after a latency of 373 +/- 69 s and in 24 h they took 21.16 +/- 3.07 ml of this solution (vs. a daily mean intake of 1-2 ml prior to the depletion). 2. The appetite was selective as shown by the fact that whe
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18. Accelerated reabsorption in the proximal tubule produced by volume depletion
The renal response to chronic depletion of extracellular volume was examined using the techniques of micropuncture. Depletion of salt and water was produced by administration of furosemide to rats maintained on a sodium-free diet. There was a marked fall in body weight, plasma volume, and glomerular filtration rate. The intrinsic reabsorptive capacity of the
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19. Effects of chronic potassium deficiency on plasma renin activity
Serial determinations of plasma renin activity, sodium balance, urinary potassium excretion rate, and plasma sodium and potassium concentration were done in five dogs during dietary-induced potassium depletion and repletion. Duration of depletion for the different animals ranged from 5 to 7 wk.
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20. The subtype 2 (AT2) angiotensin receptor mediates renal production of nitric oxide in conscious rats.
The angiotensin AT2 receptor modulates renal production of cyclic guanosine 3',5'-monophosphate (cGMP; J. Clin. Invest. 1996. 97:1978-1982). In the present study, we hypothesized that angiotensin II (Ang II) acts at the AT2 receptor to stimulate renal production of nitric oxide leading to the previously observed increase in cGMP. Using a microdialysis techni
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21. Cation depletion by the sodium pump in red cells with pathologic cation leaks. Sickle cells and xerocytes.
The mechanism by which sickle cells and xerocytic red cells become depleted of cations in vivo has not been identified previously. Both types of cells exhibit elevated permeabilities to sodium and potassium, in the case of sickle cells, when deoxygenated. The ouabain-insensitive fluxes of sodium and potassium were equivalent, however, in both cell types unde
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22. Ion transport in proximal colon of the rat. Sodium depletion stimulates neutral sodium chloride absorption.
The model of sodium and chloride transport proposed for the colon is based on studies performed in the distal segment and tacitly assumes that ion transport is similar throughout the colon. In rat distal colon, neutral sodium-chloride absorption accounts for the major fraction of overall sodium absorption and aldosterone stimulates electrogenic, amiloride-se
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23. Reversible renal failure after combined treatment with enalapril and frusemide in a patient with congestive heart failure.
A patient with congestive heart failure and moderate renal insufficiency developed severe reversible non-oliguric renal failure while on frusemide and enalapril. Renal failure developed when enalapril was given in the presence of pronounced sodium depletion. When positive sodium balance was restored the plasma creatinine concentration began to fall while ang
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24. A micropuncture study of renal tubular lithium reabsorption in sodium-depleted rats.
1. The marked reduction in fractional lithium excretion (FELi) which accompanies chronic sodium depletion was investigated using free-flow micropuncture in anaesthetized rats which had been maintained in a sodium-depleted state for 8-10 days. 2. Compared with previous values in sodium-replete rats, sodium depletion was associated with small reductions in tot