convoluted tubule
Intrinsic differences in various segments of the proximal convoluted tubule
... proximal convoluted tubule, the permeability to sodium was greater than that to chloride, whereas in the 2nd mm of the superficial proximal convoluted tubule and all later segments, the ...
9
A functional comparison of the cortical collecting tubule and the distal convoluted tubule
... distal convoluted tubule (DCT) and the cortical collecting tubule (CCT) were examined using the technique in which isolated segments of rabbit tubules were perfused in ...
12
On the mechanism of parathyroid hormone stimulation of calcium uptake by mouse distal convoluted tubule cells
... convoluted tubule cells. PTH (10(-8) M) significantly increased 45Ca2+ uptake from basal levels of 2.81 +/- 0.16 to 3.88 +/- 0.19 nmol min-1 mg protein-1. PTH-induced 45Ca2+ uptake was abolished by the ...
11
Sodium, phosphate, glucose, bicarbonate, and alanine interactions in the isolated proximal convoluted tubule of the rabbit kidney
... Interactions among the transport systems involved with sodium, bicarbonate, glucose, phosphate, and alanine absorption in isolated segments of the rabbit proximal convoluted tubule were examined with ...
12
Axial heterogeneity of bicarbonate, chloride, and water transport in the rat proximal convoluted tubule Effects of change in luminal flow rate and of alkalemia
... These studies examined regulation of superficial proximal convoluted tubule (PCT) transport as a function of length. When single nephron glomerular filtration rate (SNGFR) increased from 28.7 +/- 0.7 nl/min ...
12
Mechanism of calcium transport stimulated by chlorothiazide in mouse distal convoluted tubule cells
... distal convoluted tubule (MDCT) cells to determine the mechanism underlying the dissociation of sodium from calcium transport and the stimulation of calcium absorption induced by thiazide ...
11
Apical membrane chloride/base exchange in the rat proximal convoluted tubule
... To examine whether Cl/base exchange is present on the apical membrane of the proximal convoluted tubule, cell pH was measured fluorometrically in the in vivo microperfused rat proximal tubule with ...
6
Ammonia transport by early and late proximal convoluted tubule of the rat
... Free-flow micropuncture experiments were performed to examine ammonia transport separately in early and late proximal convoluted tubule (PCT) of the rat. In control rats, ammonia was secreted along the ...
9
Insulin stimulates volume absorption in the rabbit proximal convoluted tubule
... The present in vitro microperfusion study examined whether insulin affects volume absorption (Jv) in the proximal convoluted tubule (PCT). PCT were perfused with an ultrafiltrate-like solution and were ...
7
Axial heterogeneity of intracellular pH in rat proximal convoluted tubule
... In the proximal convoluted tubule (PT), the HCO3- reabsorptive rate is higher in early (EPS) compared with late proximal segments (LPS). To examine the mechanism of this HCO3- reabsorption profile, ...
10
Adaptation of the distal convoluted tubule of the rat Structural and functional effects of dietary salt intake and chronic diuretic infusion
... distal convoluted tubule independent of changes in tubule structure, (b) high rates of ion delivery to the distal nephron cause tubule hypertrophy, and (c) tubule hypertrophy is ...
15
Glucocorticoids stimulate rabbit proximal convoluted tubule acidification
... Glucocorticoids have an important role in renal acidification; however, a direct effect of glucocorticoids on proximal convoluted tubule (PCT) acidification has not been directly demonstrated. In the ...
6
Calcium transport in the rabbit superficial proximal convoluted tubule
... proximal convoluted tubule is due primarily to passive ...proximal convoluted tubule of the rabbit, passive driving forces are the major determinants of calcium ...
10
Modulation of phosphate absorption by calcium in the rabbit proximal convoluted tubule
... Proximal convoluted (S2) and straight (S3) renal tubule segments were studied to determine the effect of Ca on lumen-to-bath phosphate flux (JlbPO4). Increasing bath and perfusate Ca from 1.8 to 3.6 mM ...
8
Angiotensin II: a potent regulator of acidification in the rat early proximal convoluted tubule
... Systemic angiotensin II administration 20 ng/kg X min or inhibition of endogenous angiotensin II activity with saralasin 1 microgram/kg X min caused profound changes in bicarbonate absor[r] ...
5
Mechanism of NaCl and water reabsorption in the proximal convoluted tubule of rat kidney
... Reabsorptive rates Jv, chloride concentrations, and transtubular potential difference were measured during perfusion with solutions A simulating an ultrafiltrate of plasma; B similar to [r] ...
10
Active and passive components of chloride transport in the rat proximal convoluted tubule
... Rat proximal convoluted tubules were perfused in vivo to examine the active and passive components of chloride absorption. Chloride flux was a linear function of the transepithelial electrochemical driving force, ...
8
Intracellular cystine loading inhibits transport in the rabbit proximal convoluted tubule
... proximal tubule transport defect seen with elevated intracellular cystine concentrations, rabbit proximal convoluted tubules (PCT) were perfused in ...
6
Neonatal rabbit juxtamedullary proximal convoluted tubule acidification
... juxtamedullary proximal convoluted tubules. Proton fluxes were determined from the initial rate of change of intracellular pH after a change in the luminal or bathing solution, buffer capacity, and tubular volume ...
9
Response of the Distal Tubule and Cortical Collecting Duct to Vasopressin in the Rat
... “distal tubule” (defined by the micropuncturist as that portion of the renal tubule extending between the macula densa and its first junction with another (renal tubule) may be responsive to ...renal ...
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