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Updated: May 28, 2026

The Large-Scale Cultivation of Nematodes to Study Their Collective Behaviors
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Published on: August 25, 2023

Complex systems, evolution, and animal models.

Ray Greek1, Niall Shanks

  • 1Americans For Medical Advancement, 2251 Refugio Rd, Goleta, CA 93117, USA. DrRayGreek@aol.com

Studies in History and Philosophy of Biological and Biomedical Sciences
|November 1, 2011
PubMed
Summary
This summary is machine-generated.

Animal models, including humans and nonhumans, are complex systems with distinct evolutionary paths. This complexity impacts their reliability as predictive models for human drug and disease responses.

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Area of Science:

  • Comparative biology
  • Evolutionary medicine
  • Pharmacology

Background:

  • The use of animal models in biomedical research is a widely accepted practice.
  • However, the validity of animal models for predicting human responses to drugs and diseases has been questioned.
  • Arguments concerning the utility of animal models necessitate a deeper examination of their biological underpinnings.

Purpose of the Study:

  • To address recent arguments regarding the use of animal models.
  • To examine the biological complexity and evolutionary divergence of animals (human and nonhuman).
  • To discuss the implications of evolutionary trajectories for the predictive value of animal models in human health.

Main Methods:

  • Literature review and critical analysis of existing arguments on animal model utility.
  • Examination of comparative biology principles related to evolutionary trajectories.
  • Discussion of the implications of these principles for translational research.

Main Results:

  • Animals, both human and nonhuman, are recognized as intricate biological systems.
  • Significant differences exist in the evolutionary histories and trajectories of various animal species.
  • These evolutionary divergences present challenges for direct extrapolation of findings from one species to another.

Conclusions:

  • The distinct evolutionary paths of animals must be considered when evaluating their suitability as models for human disease and drug response.
  • A nuanced understanding of comparative biology is crucial for improving the predictive accuracy of animal models.
  • Future research should focus on integrating evolutionary perspectives to refine the application of animal models in biomedical science.