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Mar. Drugs 2014, 12(2), 983-998; doi:10.3390/md12020983

Transcriptional Changes Caused by Bisphenol A in Oryzias javanicus, a Fish Species Highly Adaptable to Environmental Salinity

South Sea Environment Research Division, Korea Institute of Ocean Science and Technology, Geoje 656-830, Korea
Biodiversity Research Centre, Academia Sinica, Taipei 115, Taiwan
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 10 December 2013 / Revised: 6 January 2014 / Accepted: 6 February 2014 / Published: 14 February 2014
(This article belongs to the Special Issue Marine Fish Endocrine Disruption)
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The Javanese medaka, Oryzias javanicus, is a fish highly adaptable to various environmental salinities. Here, we investigated the effects of the environmental pollutant bisphenol A (BPA; an endocrine disrupting chemical) on gene expression levels in this species acclimated to different salinities. Using cDNA microarrays, we detected the induction of differential expression of genes by BPA, and compared the transcriptional changes caused by chemical exposure at different salinities. There were marked transcriptional changes induced by BPA between treatments. While 533 genes were induced by a factor of more than two when O. javanicus was exposed to BPA in seawater, only 215 genes were induced in freshwater. Among those genes, only 78 were shared and changed significantly their expression in both seawater and freshwater. Those genes were mainly involved in cellular processes and signaling pathway. We then categorized by functional group genes specifically induced by BPA exposure in seawater or freshwater. Gene expression changes were further confirmed in O. javanicus exposed to various concentrations of BPA, using quantitative real-time reverse transcription PCR based on primer sets for 28 selected genes. View Full-Text
Keywords: Oryzias javanicus; cDNA microarray; bisphenol A; gene expression; salinity Oryzias javanicus; cDNA microarray; bisphenol A; gene expression; salinity

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Woo, S.; Denis, V.; Yum, S. Transcriptional Changes Caused by Bisphenol A in Oryzias javanicus, a Fish Species Highly Adaptable to Environmental Salinity. Mar. Drugs 2014, 12, 983-998.

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