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Updated: May 24, 2026

Metabolic Profile Analysis of Zebrafish Embryos
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Metabolic Profile Analysis of Zebrafish Embryos

Published on: January 14, 2013

Changes in thyroid hormone levels during zebrafish development.

Juhua Chang1, Minghua Wang, Wenjun Gui

  • 1Institute of Pesticide and Environmental Toxicology, Zhejiang University, Hangzhou, China.

Zoological Science
|March 3, 2012
PubMed
Summary
This summary is machine-generated.

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Thyroid hormone levels in zebrafish (Danio rerio) remain stable until hatching, then rise significantly during early development. This study establishes crucial baseline data for thyroxine (T4) and triiodothyronine (T3) in zebrafish.

Area of Science:

  • Endocrinology
  • Developmental Biology
  • Aquatic Toxicology

Background:

  • Zebrafish (Danio rerio) are a key model organism for studying endocrine disrupting chemicals.
  • Thyroid hormones, thyroxine (T4) and triiodothyronine (T3), are critical for vertebrate development.
  • Understanding normal thyroid hormone profiles is essential for assessing chemical impacts.

Purpose of the Study:

  • To profile whole-body thyroxine (T4) and 3,5,3'-triiodothyronine (T3) levels throughout zebrafish development.
  • To establish a normative baseline for thyroid hormone concentrations in zebrafish from embryo to adult.
  • To provide a foundation for future research on thyroid toxicants in zebrafish.

Main Methods:

  • Whole-body T4 and T3 contents were analyzed using enzyme-linked immunoassay.

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  • Zebrafish development was monitored from embryonic stages through adulthood.
  • Thyroid hormone levels were quantified at various time points post-fertilization.

    • Main Results:

    • Whole-body T4 and T3 levels were stable during the pre-hatching period (0-3 days).
    • Significant increases in T4 and T3 were observed post-hatching.
    • T3 peaked at 10 days post-fertilization (dpf), and T4 peaked at 21 dpf, followed by a decline.

    Conclusions:

    • This study provides the first comprehensive baseline of thyroid hormone levels during zebrafish development.
    • The established baseline is vital for understanding normal thyroid hormone function in zebrafish.
    • This data will be crucial for future toxicological studies investigating endocrine disruptors in this model species.