A Short-Term Study Investigating the Estrogenic Potency of Diethylstilbesterol in the Fathead Minnow (Pimephales promelas): Recovery phase
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ABSTRACT: Diethylstilbestrol (DES) is a synthetic estrogen that has been banned for use in humans, but still is employed in livestock and aquaculture operations in some parts of the world. Detectable concentrations of DES in effluent and surface waters have been reported to range from slightly below 1 to greater than 10 ng/L. Little is known, however, concerning the toxicological potency of DES in fish. In this study, sexually-mature fathead minnows (Pimephales promelas) of both sexes were exposed to 1, 10 or 100 ng DES/L water in a flow-through system. Tissue concentrations of DES and changes in a number of estrogen-responsive endpoints, including alterations to the hepatic transcriptome in females, were measured in the fish at the end of a 4-d exposure, and after a 4-d depuration/recovery period in clean water. The objectives of the study were to measure accumulation of DES in fish tissues, characterize effects of the chemical on physiological endpoints related to reproductive performance, and to evaluate DES's potency relative to concentrations reported in aquatic environments. The current series includes n=11 microarrays associated with recovery-phase samples (collected from fish exposed continuously for 4 d, and then held in control water for an additional 4 days before tissues were collected).
ORGANISM(S): Pimephales promelas
PROVIDER: GSE36466 | GEO | 2012/09/20
SECONDARY ACCESSION(S): PRJNA155609
REPOSITORIES: GEO
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