NDLI: Biological Analysis of Endocrine-Disrupting Compounds in Tunisian Sewage Treatment Plants

Content Provider	Springer Nature Link
Author	Mnif, Wissem Dagni, Sonia Escande, Aurélie Pillon, Arnaud Fenet, Hélène Gomez, Elena Casellas, Claude Duchesne, Marie Josèphe Hernandez Raquet, Guillermina Cavaillès, Vincent Balaguer, Patrick Bartegi, Aghleb
Copyright Year	2009
Abstract	Endocrin-disrupting compounds (EDCs) are frequently found in wastewater treatment plants (WWTPs). So far, research has been mainly focused on the detection of estrogenic compounds and very little work has been carried out on other receptors activators. In this study, we used reporter cell lines, which allow detecting the activity of estrogen (ERα), androgen (AR), pregnane X (PXR), glucocorticoid (GR), progesterone (PR), mineralocorticoid (MR), and aryl hydrocarbon (AhR) receptors, to characterise the endocrine-disrupting profile of the aqueous, suspended particulate matter, and sludge fractions from three Tunisian WWTPs. The aqueous fraction exhibited estrogenic and androgenic activities. Suspended particulate matter and sludge extracts showed estrogenic, aryl hydrocarbon and pregnane X receptor activities. No GR, MR, or PR (ant) agonistic activity was detected in the samples, suggesting that environmental compounds present in sewage might have a limited spectrum of activity. By performing competition experiments with recombinant ERα, we demonstrated that the estrogenic activity detected in the aqueous fraction was due to EDCs with a strong affinity for ERα. Conversely, in the sludge fraction, it was linked to the presence of EDCs with weak affinity. Moreover, by using different incubation times, we determined that the EDCs present in suspended particulate matter and sludge, which can activate AhR, are metabolically labile compounds. Finally, we showed in this study that environmental compounds are mainly ER, AR, PXR, and AhR activators. Concerning AR and PXR ligands, we do not to know the nature of the molecules. Concerning ER and AhR compounds, competition experiments with recombinant receptor and analysis at different times of exposure of the AhR activation gave some indications of the compound’s nature that need to be confirmed by chemical analysis.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	00904341
Journal	Archives of Environmental Contamination and Toxicology
Volume Number	59
Issue Number	1
e-ISSN	14320703
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-12-22
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Environmental Monitoring/Analysis Soil Science & Conservation Environmental Chemistry Environmental Health Pollution Ecotoxicology
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Medicine Toxicology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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