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

Journal Article (Journal Article)

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 1.5mM 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.

Full Text

Duke Authors

Cited Authors

  • Roy, NM; Arpie, B; Lugo, J; Linney, E; Levin, ED; Cerutti, D

Published Date

  • November 2012

Published In

Volume / Issue

  • 34 / 6

Start / End Page

  • 587 - 591

PubMed ID

  • 23022260

Pubmed Central ID

  • PMC4338986

Electronic International Standard Serial Number (EISSN)

  • 1872-9738

Digital Object Identifier (DOI)

  • 10.1016/


  • eng

Conference Location

  • United States