Local pH domains regulate NHE 3 mediated Na + reabsorption in the renal 1 proximal tubule 2 Jens

نویسندگان

  • Jens Christian Brasen
  • James L. Burford
  • Alicia A. McDonough
  • Niels-Henrik Holstein
  • Janos Peti-Peterdi
چکیده

Jens Christian Brasen, James L. Burford, Alicia A. McDonough, Niels-Henrik Holstein3 Rathlou, Janos Peti-Peterdi 4 5 Department of Biomedical Sciences, University of Copenhagen, Blegdamsvej 3B, DK-2200 6 Copenhagen N, Denmark. 7 Biomedical Engineering, Department of Electrical Engineering, Technical University of Denmark, 8 DK-2800 Lyngby, Denmark 9 Departments of Physiology and Biophysics, and Zilkha Neurogenetic Institute, and Cell and 10 Neurobiology, University of Southern California, Los Angeles, CA 90033, USA 11 12 * Corresponding author 13 Jens Christian Brasen 14 [email protected]; [email protected] 15 16 17 18 Articles in PresS. Am J Physiol Renal Physiol (October 8, 2014). doi:10.1152/ajprenal.00174.2014

منابع مشابه

Local pH domains regulate NHE3-mediated Na⁺ reabsorption in the renal proximal tubule.

The proximal tubule Na(+)/H(+) exchanger 3 (NHE3), located in the apical dense microvilli (brush border), plays a major role in the reabsorption of NaCl and water in the renal proximal tubule. In response to a rise in blood pressure NHE3 redistributes in the plane of the plasma membrane to the base of the brush border, where NHE3 activity is reduced. This NHE3 redistribution is assumed to provo...

متن کامل

Renal transplantation modulates expression and function of receptors and transporters of rat proximal tubules.

Kidney transplantation often leads to disturbances of solute and volume maintenance in humans. To investigate underlying mechanisms, expression and function of renal transporters and receptors of the proximal tubule (PT) were analyzed in an acute rejection model of rat kidney transplantation. Semiquantitative RT-PCR and Western blot, histology, immunohistochemistry, and microfluorometry were pe...

متن کامل

Phenol injury-induced hypertension stimulates proximal tubule Na+/H+ exchanger activity.

Injection of 50 microl 10% phenol into rat renal cortex activates renal sympathetic nerve activity which provokes acute hypertension that persists for weeks. We have previously shown with membrane fractionation that phenol injury caused a redistribution of the main proximal tubule (PT) apical transporter NHE3 (Na+/H+ exchanger isoform 3) to low density membranes enriched in apical microvilli. T...

متن کامل

Stimulation of renal sulfate secretion by metabolic acidosis requires Na+/H+ exchange induction and carbonic anhydrase.

The acute effect of metabolic acidosis on SO(4)(2-) secretion by the marine teleost renal proximal tubule was examined. Metabolic acidosis was mimicked in primary cultures of winter flounder renal proximal tubule epithelium (fPTCs) mounted in Ussing chambers by reducing interstitial pH to 7.1 (normally 7.7). fPTCs with metabolic acidosis secreted SO(4)(2-) at a net rate that was 40% higher than...

متن کامل

A mathematical model of rat distal convoluted tubule. I. Cotransporter function in early DCT.

A model of rat early distal convoluted tubule (DCT) is developed in conjunction with a kinetic representation of the thiazide-sensitive NaCl cotransporter (TSC). Realistic constraints on cell membrane electrical conductance require that most of the peritubular Cl(-) reabsorption proceeds via a KCl cotransporter,along with most of the K(+) recycled from the Na-K-ATPase. The model tubule reproduc...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

متن کامل
عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2014