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Single-channel Analysis and Calcium Imaging in the Podocytes of the Freshly Isolated Glomeruli
12:19

Single-channel Analysis and Calcium Imaging in the Podocytes of the Freshly Isolated Glomeruli

Published on: June 27, 2015

Calcium-sensing in the kidney.

Pascal Houillier1

  • 1Université Paris-Descartes, Sorbonne Paris-Cité, F-75006 Paris, France. pascal.houillier@inserm.fr

Current Opinion in Nephrology and Hypertension
|August 7, 2013
PubMed
Summary
This summary is machine-generated.

The calcium-sensing receptor (CaSR) in the kidney primarily regulates calcium reabsorption in the loop of Henle. Further research is needed to fully understand its role in other renal transports and its therapeutic potential.

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Area of Science:

  • Nephrology
  • Endocrinology
  • Molecular Biology

Background:

  • Extracellular calcium concentration significantly impacts renal tubule functions.
  • The calcium-sensing receptor (CaSR), known in parathyroid glands, is also present in the kidney.
  • CaSR was previously assumed to mediate all renal effects of extracellular calcium.

Purpose of the Study:

  • To critically evaluate the evidence supporting CaSR's role in mediating all extracellular calcium effects on the renal tubule.
  • To review the current understanding of CaSR expression and function within the kidney.

Main Methods:

  • Literature review and critical analysis of existing research.
  • Examination of studies investigating CaSR expression and function in renal tissues.
  • Assessment of evidence linking CaSR to various renal transport mechanisms.

Main Results:

  • CaSR is predominantly expressed in the thick ascending limb of the loop of Henle.
  • In the kidney, CaSR controls calcium reabsorption via paracellular pathway permeability, independent of parathyroid hormone.
  • Direct evidence for CaSR's involvement in non-calcium transports affected by extracellular calcium remains limited.

Conclusions:

  • Kidney CaSR plays a crucial role in regulating calcium reabsorption and excretion, influencing blood calcium levels.
  • CaSR agonists and antagonists hold potential for managing blood calcium in patients with impaired parathyroid hormone regulation.
  • Further investigation is required to elucidate the molecular mechanisms of CaSR in renal calcium transport.