Evaluation of Three ISO Estrogen Receptor Transactivation Assays Applied to 52 Domestic Effluent Samples
| Autor: | Eszter Simon, Carolin Riegraf, Andrea Schifferli, Daniel Olbrich, Thomas Bucher, Etiënne L. M. Vermeirssen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Transcriptional Activation
Estradiol Estrone Health Toxicology and Mutagenesis Municipal effluents Estrogen Receptor alpha Estrogenicity Estrogens Saccharomyces cerevisiae Reference Standards Estrogenic compounds Water quality Effect-based monitoring In vitro toxicology Reporter gene assay Receptors Estrogen Environmental Chemistry Humans Biological Assay Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental Toxicology and Chemistry, 41 (10) |
| ISSN: | 0277-2248 1029-0486 0092-9867 |
| Popis: | Estrogens are released to the aquatic environment by wastewater treatment plant (WWTP) effluents and can affect wildlife. In the last three decades, many in vitro assay platforms have been developed to detect and quantify estrogenicity in water. In 2018, the International Organization for Standardization (ISO) standardized protocols became available for three types of in vitro estrogen receptor transactivation assays (ERTAs) detecting estrogenicity in 96-well plates (ISO19040 1-3). Two ERTAs-lyticase Yeast Estrogen Screen (L-YES) and Arxula YES (A-YES)-use genetically modified yeast strains, whereas the third utilizes stably transfected human cells. One human cell based assay is ER alpha-CALUX, which is based on a genetically modified human bone osteosarcoma cell line. In the present study, we characterized the performance, comparability, and effectiveness of these three ERTAs, including an evaluation involving proposed water quality thresholds (effect-based trigger values [EBTs]). For a robust evaluation, we collected 52 effluent samples over three sampling campaigns at 15 different WWTPs in Switzerland. Estrogen receptor transactivation assay results were correlated and compared with results from chemical analysis targeting known estrogens. The three ERTAs showed comparable data over all campaigns. However, the selection of EBTs plays a significant role in the interpretation and comparison of bioassay results to distinguish between acceptable and unacceptable water quality. Applying a fixed cross-assay EBT for effluent of 4 ng L-1 resulted in varying numbers of threshold exceedances ranging between zero and four samples depending on the ERTA used. Using assay-specific EBTs showed exceedances in eight samples (ER alpha-CALUX) and in one sample (A-YES), respectively. Thus, proposed EBTs do not produce similar risk profiles across samples and further refinement of assay-specific EBTs is needed to account for assay-specific differences and to enable the application of ERTAs as effect-based methods in environmental monitoring. Environ Toxicol Chem 2022;00:1-15. (c) 2022 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC. Environmental Toxicology and Chemistry, 41 (10) ISSN:0277-2248 ISSN:1029-0486 ISSN:0092-9867 |
| Databáze: | OpenAIRE |
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