Data for: Evaluation of transcriptional biomarkers using a high-resolution regression approach: Concentration-dependence of selected transcripts in copper-exposed freshwater mussels (Anodonta anatina)

Published: 29 September 2022| Version 3 | DOI: 10.17632/mkd8fw935c.3
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Data for the paper 'Evaluation of transcriptional biomarkers using a high-resolution regression approach: Concentration-dependence of selected transcripts in copper-exposed freshwater mussels (Anodonta anatina)'. ABSTRACT: We tested concentration-dependence of selected gene transcripts (cat, gst, hsp70, hsp90, mt and sod) for evaluation as biomarkers of chemical stress. Contrary to the common approach of factorial designs and few exposure concentrations, we used regression across a high-resolution concentration series. Specifically, freshwater mussels (Anodonta anatina) were acutely (96 h) exposed to Cu (13 nominal concentrations, measuring 0.13–1 600 µg/L), and transcripts were measured by RT-qPCR. In digestive glands, cat, hsp90 and mt decreased with water Cu (p < 0.05), but response magnitudes saturated at < 2-fold decreases. In gills, gst, hsp70, hsp90 and mt increased with water Cu (p < 0.05). While hsp70, hsp90 and mt exceeded 2-fold increases within the exposure range, high Cu concentrations were required (38–160 µg/L). Although gill responses were generally more robust compared to digestive glands, overall small response magnitudes and moderate sensitivity may set limit for potential application as general biomarkers of chemical stress. Full reference: Ekelund Ugge, G.M.O., Jonsson, A., Walstad, A., Berglund, O. (2022). Evaluation of transcriptional biomarkers using a high-resolution regression approach: Concentration-dependence of selected transcripts in copper-exposed freshwater mussels (Anodonta anatina). Environ Toxicol Pharmacol, 90, 103795. https://doi.org/10.1016/j.etap.2021.103795

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Institutions

Lunds Universitet, Hogskolan i Skovde

Categories

Toxicology, Metal, Environmental Toxicology, Transcription, Biomarkers, Freshwater Biology, Aquatic Invertebrates, Bivalvia, Heat Shock Protein, Copper, Catalase, Superoxide Dismutase, Metallothionein, Glutathione S-Transferase, Polymerase Chain Reaction, Gene Transcription, Water, Gill, Hepatopancreas, Real-Time Polymerase Chain Reaction, Dose-Response Relationship, Dose Response, Aquatic Toxicology, Acute Toxicity, Freshwater Ecology, Ecotoxicity, Environmental Risk Assessment, Freshwater, Reverse Transcription Polymerase Chain Reaction

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