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Related Experiment Videos

Anisosmotic cell volume regulation: a comparative view.

M E Chamberlin1, K Strange

  • 1Department of Zoological and Biomedical Sciences, Ohio University, Athens 45701.

The American Journal of Physiology
|August 1, 1989
PubMed
Summary

Organisms maintain cell volume against osmotic stress by adjusting internal solutes (osmolytes). This review explores conserved mechanisms across diverse life forms, highlighting future research directions in cell volume regulation.

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Area of Science:

  • Comparative physiology
  • Cell biology
  • Biochemistry

Background:

  • Organisms face osmotic stress, necessitating cell volume regulation.
  • Cell volume is maintained by altering intracellular solute concentrations (osmolytes).
  • Diverse organisms utilize unique mechanisms for volume regulation.

Purpose of the Study:

  • To review cell volume regulation mechanisms across all five taxonomic kingdoms.
  • To discuss the roles of inorganic and organic osmolytes in volume maintenance.
  • To explore the transduction of volume changes into regulatory responses.

Main Methods:

  • Comparative analysis of osmoregulation strategies.
  • Review of studies on ion transport and organic osmolyte regulation.

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  • Examination of signaling pathways involved in volume control.

    • Main Results:

    • Cell volume regulation involves conserved physiological processes.
    • Diverse osmolytes (inorganic and organic) are employed.
    • Mechanisms include ion transport, gene expression, and signaling pathways.

    Conclusions:

    • Cell volume regulation is a fundamental and conserved process.
    • Understanding diverse mechanisms provides insights into evolutionary adaptations.
    • Future research should focus on conserved pathways and signaling transduction.