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Metabolic Profile Analysis of Zebrafish Embryos
Published on: January 14, 2013
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Characterization of trace metal content in the developing zebrafish embryo
Rebecca T Thomason1, Michael A Pettiglio2, Carolina Herrera2
1University of Virginia, Charlottesville, Virginia, United States of America.
Plos One
|June 16, 2017
Summary
Developing zebrafish rely on maternal trace metals until environmental uptake. Total metal levels don't always reflect biological activity, crucial for understanding metal homeostasis.
Area of Science:
- * Developmental Biology
- * Trace Element Metabolism
- * Zebrafish Models
Background:
- * Trace metals are vital for health but toxic in excess.
- * Mechanisms of trace metal homeostasis in vertebrates are not fully understood.
- * Zebrafish are a suitable model for studying metal regulation due to genetic and pharmacologic tractability.
Purpose of the Study:
- * To characterize trace metal (copper, zinc, manganese) levels during zebrafish development.
- * To investigate the role of maternal contribution versus environmental uptake in early development.
- * To assess the utility of total metal level measurements versus biologically active levels.
Main Methods:
- * Inductively coupled plasma mass spectrometry (ICP-MS) was used to quantify trace metals.
- * Measurements were taken from oocyte stage to 30 days post-fertilization.
- * Zebrafish embryos were treated with a copper chelator (neocuproine) to assess copper deficiency impacts.
Main Results:
- * Trace metal levels remained stable in early zebrafish development, suggesting reliance on maternal oocyte contribution.
- * Distinct metal distributions were observed between embryonic yolks and bodies.
- * Copper deficiency induced by neocuproine did not alter total copper levels, highlighting the difference between total and active metal concentrations.
Conclusions:
- * Early zebrafish embryos depend on maternally provided trace metals.
- * Measurement of total trace metal content may not accurately reflect biologically active levels.
- * Findings provide a foundation for future studies on vertebrate metal homeostasis, toxicology, and genetics.
