proximal tubule
The acid base regulation by renal proximal tubule
... the proximal tubule, among them NBCe1 plays a major role in the absorption of bicarbon- ate coupled with sodium ...renal proximal tubular aci- dosis (pRTA) with different NBCe1 mutations ...
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Effect of acute hypertension on sodium reabsorption by the proximal tubule
... the proximal tubule was studied in rats by means of micropuncture ...began. Proximal sodium reabsorption, measured by two independent methods, was found to be ...
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A Living Extracorporeal Device for Proximal Tubule Reabsorption
... proximal tubule and in the Lewis lab, while the upper bound was dialysis flow rates because of the need to potentially work in conjunction with that ...
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Effect of formate on volume reabsorption in the rabbit proximal tubule
... Studies on microvillus membrane from rabbit kidney cortex suggest that chloride absorption may occur by chloride/formate exchange with recycling of formic acid by nonionic diffusion. We tested whether this transport ...
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The effect of vasopressin on phosphate transport in the proximal tubule of the dog
... Recollection micropuncture study was performed in 11 thyroparathyroidectomized dogs during antidiuresis to determine the effect of continuous vasopressin infusion at 50 mU/kg/h on proximal tubule phosphate ...
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Accelerated reabsorption in the proximal tubule produced by volume depletion
... the proximal tubule, measured by the split-droplet technique, was greatly ...of proximal fluid reabsorption could not be accounted for by changes in filtration rate, tubular geometry, or aldosterone ...
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Renin expression in renal proximal tubule
... the proximal tubule could not distinguish synthesized renin from renin trapped from the glomerular ...rabbit proximal tubule cells in primary culture and renin mRNA in microdissected ...
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Control of fluid absorption in the renal proximal tubule
... rabbit proximal tubules in vitro in order to evaluate some of the mechanisms proposed to account for the proportionate relationship between glomerular filtration rate and fluid absorption generally observed in ...
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Mechanisms of adaptation to chronic respiratory acidosis in the rabbit proximal tubule
... The hyperbicarbonatemia of chronic respiratory acidosis is maintained by enhanced bicarbonate reabsorption in the proximal tubule. To investigate the cellular mechanisms involved in this adaptation, cell ...
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Luminal secretion of ammonia in the mouse proximal tubule perfused in vitro
... in proximal tubule segments perfused with the pH ...the proximal tubule and that luminal acidification may play only a partial role in the mechanism by which the Na+-H+ exchanger mediates net ...
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Apical Na+/H+ antiporter and glycolysis dependent H+ ATPase regulate intracellular pH in the rabbit S3 proximal tubule
... The apical transport processes responsible for proton secretion were studied in the isolated perfused rabbit S3 proximal tubule. Intracellular pH (pHi) was measured with the pH dye, ...
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Induction of hypertrophy in cultured proximal tubule cells by extracellular NH4Cl
... Ammonia production increases in several models of renal hypertrophy in vivo. The present study was designed to determine whether ammonia can directly modulate the growth of renal cells in the absence of a change in ...
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Urea secretion by the straight segment of the proximal tubule
... Studies utilizing in vitro microperfusion were designed to examine whether urea is actively or passively transported across superficial and juxtamedullary straight segments of rabbit proximal tubules. With ...
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THE MECHANISM OF POTASSIUM REABSORPTION IN THE PROXIMAL TUBULE OF THE RAT
... Use of the Nernst equation in this manner as a measure of electrochemical disequilibrium between tubular and extracellular 1 The Nernst equation describes the relation between transtubul[r] ...
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Control of proximal tubule fluid reabsorption in experimental glomerulonephritis
... absolute proximal fluid reabsorption (APR) in ...and proximal fractional reabsorption are reduced significantly in NSN, relative to values in a separate group of age and weight-matched normal hydropenic ...
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Urea transport in the proximal tubule and the descending limb of Henle
... Three specific issues were examined: a whether urea transport in PCT is active reabsorption or secretion or passive; b a comparison of the phenomenological coefficients passive permeabil[r] ...
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Potassium reabsorption in the proximal tubule of the dog nephron
... The mean tubular fluid to plasma potassium concentration ratio was 1.16 in normal hydropenic dogs, 1.12 in hydropenic dogs with reduced glomerular filtration rate produced by renal arter[r] ...
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Characteristics of NaCl and water transport in the renal proximal tubule
... Renal proximal tubular transport of salt and water has been examined using isolated perfused rabbit tubules. In this method direct measurements can be made under controlled conditions not readily achieved in vivo. ...
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The Protein Concentration in the Proximal Tubule of the Dog
... Albumin and gamma globulin in the tubular fluid were of protein concentration in the dog proximal estimated by modifying the agar gel diffusion precipitin tubule with a more sensitive me[r] ...
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Augmented bicarbonate reabsorption by both the proximal and distal nephron maintains chloride deplete metabolic alkalosis in rats
... The proximal and distal nephron of the alkalotic animals had higher values for both delivered load to and absolute reabsorption from these ...The proximal tubules of alkalotic and control animals had ...
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