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@article{2376477,
author = {Smutná, Marie and Javůrek, Jakub and Sehnal, Luděk and Toušová, Zuzana and Javůrková, Barbora and Sychrová, Eliška and LepšováandSkácelová, Olga and Hilscherová, Klára},
article_number = {November 2023},
doi = {http://dx.doi.org/10.1016/j.chemosphere.2023.140015},
keywords = {Anti-Estrogenicity; Aquatic ecosystem; Cyanobacteria; Estrogen; Freshwater bloom; Phytoplankton},
language = {eng},
issn = {0045-6535},
journal = {Chemosphere},
title = {Potential risk of estrogenic compounds produced by water blooms to aquatic environment},
url = {https://www.sciencedirect.com/science/article/pii/S0045653523022841},
volume = {341},
year = {2023}
}
TY - JOUR
ID - 2376477
AU - Smutná, Marie - Javůrek, Jakub - Sehnal, Luděk - Toušová, Zuzana - Javůrková, Barbora - Sychrová, Eliška - Lepšová-Skácelová, Olga - Hilscherová, Klára
PY - 2023
TI - Potential risk of estrogenic compounds produced by water blooms to aquatic environment
JF - Chemosphere
VL - 341
IS - November 2023
SP - 1-10
EP - 1-10
PB - Elsevier Ltd
SN - 00456535
KW - Anti-Estrogenicity
KW - Aquatic ecosystem
KW - Cyanobacteria
KW - Estrogen
KW - Freshwater bloom
KW - Phytoplankton
UR - https://www.sciencedirect.com/science/article/pii/S0045653523022841
N2 - Some freshwater phytoplankton species have been suggested to produce estrogenic compounds in concentrations which could cause adverse effects to aquatic biota, while other studies showed no estrogenic effects after exposure to phytoplankton extracts or pointed out possible sources of the overestimation of the estrogenic activity. This study aimed to clarify these research inconsistencies by investigating estrogenicity of biomass extracts from both environmental freshwater blooms and laboratory cyanobacterial and algae cultures by in vitro reporter bioassay. Biomasses of 8 cyanobacterial and 3 algal species from 7 taxonomic orders were extracted and tested. Next to this, samples of environmental water blooms collected from 8 independent water bodies dominated by phytoplankton species previously assessed as laboratory cultures were tested. The results showed undetectable or low estrogenicity of both freshwater blooms and laboratory cultures with E2 equivalent concentration (EEQ) in a range from LOQ up to 4.5 ng EEQ/g of dry mass. Moreover, the co-exposure of biomass extracts with environmentally relevant concentration of model estrogen (steroid hormone 17β-estradiol; E2), commonly occurring in surface waters, showed simple additive interaction. However, some of the biomass extracts elicited partially anti-estrogenic effects in co-exposure with higher E2 concentration. In conclusion, our study documents undetectable or relatively low estrogenic potential of biomass extracts from both environmental freshwater blooms and studied laboratory cultured cyanobacterial and algae species. Nevertheless, in case of very high-density water blooms, even this low estrogenicity (detected for two cyanobacterial species) could lead to EEQ content in biomass reaching effect-based trigger values indicating potential risk, if recalculated per water volume at field sites. However, these levels would not occur in water under realistic environmental scenarios and the potential estrogenic effects would be most probably minor compared to other toxic effects caused by massive freshwater blooms of such high densities.
ER -
SMUTNÁ, Marie, Jakub JAVŮREK, Luděk SEHNAL, Zuzana TOUŠOVÁ, Barbora JAVŮRKOVÁ, Eliška SYCHROVÁ, Olga LEPŠOVÁ-SKÁCELOVÁ a Klára HILSCHEROVÁ. Potential risk of estrogenic compounds produced by water blooms to aquatic environment. \textit{Chemosphere}. Elsevier Ltd, 2023, roč.~341, November 2023, s.~1-10. ISSN~0045-6535. Dostupné z: https://dx.doi.org/10.1016/j.chemosphere.2023.140015.
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