Essential roles for animal models in understanding human toxicities

Area of Science:

• Biomedical Sciences
• Toxicology
• Comparative Medicine

Background:

• Animal models are indispensable for toxicological research and have driven major biomedical advances.
• The extrapolation of animal research findings to human conditions is a fundamental assumption in biomedical sciences.
• Regulatory decisions rely on balancing biological limitations with societal cost-benefits, often informed by animal studies.

Purpose of the Study:

• To examine the critical role and validity of animal models in toxicology and biomedical research.
• To outline the hierarchy of criteria for assessing the extrapolation of animal data to human health outcomes.
• To emphasize the importance of careful model creation and data generalization in animal research.

Main Methods:

• Review of existing literature and established principles in toxicology and biomedical research.
• Analysis of the concept of validity in animal models, including face and predictive validity.
• Discussion of the regulatory context and decision-making processes influenced by animal study data.

Main Results:

• Animal models are currently irreplaceable for significant advancements in toxicology and medicine.
• The validity of animal models is assessed through a hierarchy of criteria, from face to predictive validity.
• Extrapolation of animal data to human conditions is essential but requires rigorous evaluation.

Conclusions:

• Animal models are vital for biomedical sciences and technologies, despite inherent limitations.
• The predictive validity of animal models is paramount for ensuring reliable extrapolation to human health.
• Careful consideration in developing and interpreting animal models is necessary for responsible scientific advancement and regulation.