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Cellular volume homeostasis.

Kevin Strange1

  • 1Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN 37232, USA. kevin.strange@vanderbilt.edu

Advances in Physiology Education
|November 17, 2004
PubMed
Summary

Cells regulate their volume against osmotic challenges using transport and metabolic pathways. This review covers water flow, perturbation mechanisms, ion/osmolyte roles, and signaling in cell volume control.

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Area of Science:

  • Cellular Biology
  • Physiology

Background:

  • Cells constantly face volume challenges from solute changes and external osmolality.
  • Maintaining cell volume is crucial for cellular function and survival.

Purpose of the Study:

  • To provide an overview of cell volume regulation mechanisms.
  • To explain the fundamental concepts of osmotic water flow and cell volume perturbations.
  • To discuss the roles of ions, osmolytes, and signaling pathways in volume homeostasis.

Main Methods:

  • Literature review of fundamental concepts in cell volume regulation.
  • Discussion of osmotic water flow across cell membranes.
  • Analysis of transport and metabolic processes involved in volume control.

Main Results:

  • Cells employ membrane transport and metabolic adjustments to counteract volume changes.
  • Inorganic ions and organic osmolytes are key players in cell volume regulation.
  • Signaling pathways modulate the activity of volume-sensitive transport and metabolic pathways.

Conclusions:

  • Cell volume regulation is a dynamic process involving coordinated transport and metabolic activities.
  • Understanding these mechanisms is vital for comprehending cellular homeostasis.
  • This review synthesizes current knowledge on cell volume control.

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