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Related Experiment Video

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Author Spotlight: High-Throughput Toxicity Screening Using Zebrafish Embryo Startle Response Assay
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Zebrafish models for assessing developmental and reproductive toxicity.

Jian-Hui He1, Ji-Min Gao2, Chang-Jiang Huang3

  • 1Zhejiang Provincial Key Lab for Technology and Application of Model Organisms, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, PR China; Institute of Watershed Science and Environmental Ecology, Wenzhou Medical University, Wenzhou, Zhejiang Province 325035, PR China; Hunter Biotechnology, Inc., Transfarland, Hangzhou, Zhejiang Province 311231, PR China.

Neurotoxicology and Teratology
|February 8, 2014
PubMed
Summary

Zebrafish offer a cost-effective, high-throughput vertebrate model for drug discovery and toxicity testing. Their physiological similarities to mammals make them predictive for assessing chemical safety and developmental reproductive toxicity.

Keywords:
Chemical toxicityDevelopmental toxicityEmbryo toxicityReproductive toxicityZebrafish

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Area of Science:

  • Comparative toxicology and pharmacology
  • Vertebrate animal models in drug discovery
  • Developmental and reproductive toxicity assessment

Background:

  • Zebrafish are increasingly utilized as a vertebrate model for in vivo drug discovery and chemical safety evaluations.
  • Zebrafish exhibit significant physiological, developmental, and metabolic similarities to mammals, with responses to toxicants being highly predictive.
  • Developmental and reproductive toxicity are critical factors in new drug safety profiling, with many candidates failing due to adverse effects.

Purpose of the Study:

  • To highlight the advantages of using zebrafish for developmental and reproductive toxicity assessments in drug safety profiling.
  • To underscore the predictive value of zebrafish toxicity data for mammalian responses.
  • To emphasize the regulatory acceptance of zebrafish toxicity testing.

Main Methods:

  • Comparative analysis of zebrafish and mammalian physiology and toxicological pathways.
  • Evaluation of experimental advantages offered by zebrafish embryos and larvae for toxicity testing.
  • Review of regulatory acceptance of zebrafish toxicity data by agencies like the FDA and EMEA.

Main Results:

  • Zebrafish physiology and toxicological pathways closely mirror those of mammals.
  • Zebrafish testing provides numerous experimental benefits, including transparency, higher throughput, shorter duration, lower cost, and reduced compound requirements.
  • Zebrafish toxicity assessment methods are accepted for regulatory submissions, such as Investigational New Drug (IND) applications.

Conclusions:

  • Zebrafish serve as a valuable and predictive animal model for in vivo drug discovery and toxicity assessment.
  • The experimental advantages of zebrafish testing facilitate efficient and cost-effective developmental and reproductive toxicity evaluations.
  • Regulatory bodies recognize the utility of zebrafish in ensuring the safety and efficacy of new drug candidates.