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Related Concept Videos

Toxicity Testing in Animals01:23

Toxicity Testing in Animals

125
Toxicity tests in animals are grounded on two main assumptions: first, the effects observed in laboratory animals can be extrapolated to humans, especially when adjusted for body surface area; second, high-dose exposure in animals is essential to identify potential human hazards from lower doses. This is based on the quantal dose-response concept, which faces the challenge of extrapolating results from relatively few test animals to much larger human populations. For example, a 0.01% incidence...
125

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Related Experiment Video

Updated: Mar 25, 2026

Cytotoxicity Assays with Zebrafish Cell Lines
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Published on: January 6, 2023

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Cell-based Assays for Assessing Toxicity: A Basic Guide.

Raveen Parboosing1, Gugulethu Mzobe, Louis Chonco

  • 1Department of Virology, National Health Laboratory Service/University of KwaZulu-Natal, Durban, South Africa.. South Africa.

Medicinal Chemistry (Shariqah (United Arab Emirates))
|March 1, 2016
PubMed
Summary

This review guides researchers in planning, conducting, and interpreting cell-based toxicity assays for drug discovery. It addresses assay complexity, standardization issues, and biological variability to improve cytotoxicity assessments.

Keywords:
Cytotoxicityapoptosiscell-based assayscytotoxicity screeningtoxicity.viability assays

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Area of Science:

  • Pharmacology and Toxicology
  • Cell Biology
  • Drug Discovery and Development

Background:

  • Cytotoxicity assessment is crucial in drug discovery.
  • Cell-based assays are widely used but present challenges.
  • Complexity arises from diverse methods, lack of standardization, and biological variability.

Purpose of the Study:

  • To provide a guide for cell-based toxicity assays.
  • To address challenges in assay planning, execution, and interpretation.
  • To improve the reliability of cytotoxicity data in drug discovery.

Main Methods:

  • Review of existing literature on cell-based toxicity assays.
  • Analysis of factors contributing to assay variability.
  • Discussion of strategies for standardization and interpretation.

Main Results:

  • Identification of key challenges in cell-based toxicity testing.
  • Recommendations for optimizing assay design and execution.
  • Guidance on interpreting results in the context of biological variability.

Conclusions:

  • Standardized and well-interpreted cell-based assays are vital for effective drug discovery.
  • Addressing assay complexity and variability enhances the accuracy of toxicity assessments.
  • This review offers a framework for improving the utility of cytotoxicity data.