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Single-channel Analysis and Calcium Imaging in the Podocytes of the Freshly Isolated Glomeruli
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Novel insights into TRPV4 function in the kidney.

Oleh Pochynyuk1, Oleg Zaika, Roger G O'Neil

  • 1Department of Integrative Biology and Pharmacology, University of Texas Health Science Center at Houston, Houston, TX 77030, USA. Oleh.M.Pochynyuk@uth.tmc.edu

Pflugers Archiv : European Journal of Physiology
|December 5, 2012
PubMed
Summary

Transient Receptor Potential Vanilloid 4 (TRPV4) channels in the kidney sense mechanical cues, regulating cellular responses. Targeting TRPV4 may offer new treatments for polycystic kidney disease.

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Yeast Luminometric and Xenopus Oocyte Electrophysiological Examinations of the Molecular Mechanosensitivity of TRPV4

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Area of Science:

  • Nephrology
  • Molecular Biology
  • Physiology

Background:

  • Kidneys maintain homeostasis by processing large plasma volumes.
  • Renal tubules must sense changes in fluid composition and flow.
  • Transient Receptor Potential (TRP) channels, including TRPV4, are implicated in mechanosensation.

Purpose of the Study:

  • To review TRPV4 expression sites in renal tissue.
  • To discuss TRPV4's functional role in response to hypotonicity and flow.
  • To explore TRPV4's interaction with the polycystin complex and its clinical implications for kidney diseases.

Main Methods:

  • Literature review of TRPV4 expression and function in the kidney.
  • Analysis of TRPV4's role in cellular responses to mechanical stimuli.
  • Integration of knowledge on TRPV4 within the renal mechanosensory complex.

Main Results:

  • TRPV4 channels are expressed in renal tissues and respond to mechanical stimuli.
  • TRPV4 activation leads to intracellular calcium increases, initiating cellular adaptations.
  • TRPV4 is linked to the polycystin mechanosensory complex in cilia.

Conclusions:

  • TRPV4 plays a critical role in renal mechanotransduction.
  • Understanding TRPV4's function offers insights into kidney physiology.
  • Pharmacological targeting of TRPV4 presents a potential therapeutic strategy for polycystic kidney disease.