Epicardium Formation as a Sensor in Toxicology
- Hofsteen, P., Plavicki, J., Peterson, R.E., Heideman, W.
- Journal of developmental biology 1: 112-125 (Journal)
- Registered Authors
- Heideman, Warren, Peterson, Richard E., Plavicki, Jessica
- AHR, TCDD, epicardium, heart regeneration, proepicardium
- MeSH Terms
- 25232532 Full text @ J Dev Biol
Hofsteen, P., Plavicki, J., Peterson, R.E., Heideman, W. (2013) Epicardium Formation as a Sensor in Toxicology. Journal of developmental biology. 1:112-125.
Zebrafish (Danio rerio) are an excellent vertebrate model for studying heart development, regeneration and cardiotoxicity. Zebrafish embryos exposed during the temporal window of epicardium development to the aryl hydrocarbon receptor (AHR) agonist 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) exhibit severe heart malformations. TCDD exposure prevents both proepicardial organ (PE) and epicardium development. Exposure later in development, after the epicardium has formed, does not produce cardiac toxicity. It is not until the adult zebrafish heart is stimulated to regenerate does TCDD again cause detrimental effects. TCDD exposure prior to ventricular resection prevents cardiac regeneration. It is likely that TCDD-induced inhibition of epicardium development and cardiac regeneration occur via a common mechanism. Here, we describe experiments that focus on the epicardium as a target and sensor of zebrafish heart toxicity.
Genes / Markers
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Engineered Foreign Genes
Errata and Notes