PUBLICATION

Brief embryonic strychnine exposure in zebrafish causes long-term adult behavioral impairment with indications of embryonic synaptic changes

Authors
Roy, N.M., Arpie, B., Lugo, J., Linney, E., Levin, E.D., and Cerutti, D.
ID
ZDB-PUB-121010-31
Date
2012
Source
Neurotoxicology and teratology   34(6): 587-591 (Journal)
Registered Authors
Linney, Elwood, Roy, Nicole
Keywords
zebrafish, development, strychnine, synaptic, behavior, novel tank diving task
MeSH Terms
  • Animal Use Alternatives
  • Animals
  • Behavior, Animal/drug effects*
  • Embryo, Nonmammalian/drug effects*
  • Embryo, Nonmammalian/metabolism
  • Environmental Pollutants/toxicity*
  • Neurotransmitter Agents/metabolism
  • Polymerase Chain Reaction
  • Strychnine/toxicity*
  • Swimming
  • Synapses/drug effects*
  • Synaptic Transmission/drug effects
  • Time Factors
  • Toxicity Tests
  • Zebrafish/embryology*
  • Zebrafish/growth & development
  • Zebrafish/metabolism
PubMed
23022260 Full text @ Neurotoxicol. Teratol.
Abstract

Zebrafish provide a powerful model of the impacts of embryonic toxicant exposure on neural development that may result in long-term behavioral dysfunction. In this study, zebrafish embryos were treated with 1.5 mM strychnine for short embryonic time windows to induce transient changes in inhibitory neural signaling, and were subsequently raised in untreated water until adulthood. PCR analysis showed indications that strychnine exposure altered expression of some genes related to glycinergic, GABAergic and glutamatergic neuronal synapses during embryonic development. In adulthood, treated fish showed significant changes in swimming speed and tank diving behavior compared to controls. Taken together, these data show that a short embryonic exposure to a neurotoxicant can alter development of neural synapses and lead to changes in adult behavior.

Genes / Markers
Figures
Expression
Phenotype
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Errata and Notes