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Related Experiment Videos

Catecholamines: study of interspecies variation.

B B Hart1, G G Stanford, M G Ziegler

  • 1F. Edward Hèbert School of Medicine, Uniform Services University of the Health Sciences, Bethesda, MD.

Critical Care Medicine
|November 1, 1989
PubMed
Summary
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This study compiles plasma catecholamine data from over 5000 animals across 31 species. Primitive fish show the highest basal catecholamine levels, while birds and mammals exhibit the lowest.

Area of Science:

  • Comparative Physiology
  • Neuroendocrinology
  • Zoology

Background:

  • Plasma catecholamine concentrations are widely studied but lack species-specific comparative analysis.
  • Understanding variations in catecholamine levels across species is crucial for comparative physiology and stress response research.

Purpose of the Study:

  • To systematically review and synthesize data on plasma catecholamine concentrations across diverse animal species.
  • To analyze species variations in catecholamine responses to various physiological and experimental stresses.

Main Methods:

  • Comprehensive literature search of over 200 publications.
  • Compilation of data from more than 5000 animal subjects across 31 diverse animal groups.
  • Tabulation of experimental designs and catecholamine levels for comparative analysis.

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Main Results:

  • Significant species variations in basal and stress-induced plasma catecholamine concentrations were identified.
  • Primitive cartilaginous fish (e.g., shark, lamprey) exhibit the highest basal catecholamine levels.
  • Birds, mammals, and teleost fish demonstrate the lowest catecholamine concentrations, correlating with adrenal medulla and nervous system development.

Conclusions:

  • Plasma catecholamine concentrations vary significantly across animal taxa, influenced by evolutionary and anatomical factors.
  • Specific stressors like decapitation, hypoxia, hemorrhage, and hypothermia elicit the most pronounced catecholamine responses.
  • This comprehensive review provides a valuable resource for researchers investigating catecholamine physiology and stress responses in humans and animals.