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Related Experiment Videos

K-Cl cotransporter expression in the human kidney

H Liapis1, M Nag, D M Kaji

  • 1Department of Pathology, Washington University School of Medicine, St. Louis, Missouri 63110, USA.

The American Journal of Physiology
|December 9, 1998
PubMed
Summary
This summary is machine-generated.

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The K-Cl cotransporter 1 (KCC1) is found in human kidney tubules and vessels. This finding suggests KCC1 plays a key role in kidney potassium and chloride reabsorption.

Area of Science:

  • Nephrology
  • Molecular Biology
  • Cell Biology

Background:

  • The K-Cl cotransporter protein KCC1 facilitates electroneutral K and Cl transport across cell membranes.
  • The specific kidney cell types expressing KCC1 have not been previously identified.

Purpose of the Study:

  • To determine the distribution of KCC1 mRNA within the human kidney.

Main Methods:

  • In situ hybridization was employed using a digoxigenin-labeled riboprobe.
  • KCC1 mRNA expression patterns were analyzed in human kidney tissue.

Main Results:

  • Abundant KCC1 mRNA expression was detected in epithelial cells of both proximal and distal renal tubules.
  • KCC1 expression was also observed in glomerular mesangial cells and renal vascular endothelial cells.

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Conclusions:

  • KCC1 is expressed throughout the human renal tubular epithelium, mesangium, and vasculature.
  • These findings indicate a significant role for KCC1 in transepithelial potassium and chloride reabsorption in the kidney.