In vitro biomonitoring of contamination by estrogenic compounds in coastals environments : comments on the use of M galloprovincialis

Arthur David 1 Hélène Fenet 1 Aurélie Escande 1 Dominique Munaron 2 David Rosain 1 Emmanuelle Maillot-Marechal 3 Selim Ait-Aissa 3 Claude Casellas 1 Elena Gomez 1
1 HSM - Hydrosciences Montpellier
2 Institut Français de Recherche pour l'Exploitation de la Mer
3 INERIS - Institut National de l'Environnement Industriel et des Risques
Abstract : The use of mussel extracts in in vitro bioassays which express the estrogen receptor could provide valuable information on the bioavailability of endocrine disruptors in coastal environments. The aim of this study was to assess the temporal variability of the estrogenic responses in bioassays in Mytilus galloprovincialis. A 6-month in situ experiment was conducted in order to follow the estrogenic activity on MELN cell line during the reproduction stages of mussels. Estradiol equivalents (EEQ) determined in mussels using the MELN cell lines ranged from 0.79 to 3.72 ng/g dry weight (d.w.) in males, from 0.42 to 2.33 ng/g d.w. in females and from 3.41 to 4.2 d.w. in undifferentiated bivalves. We observed an increase in EEQ values during the spawning stage for males, not for female. The maximal EEQ values were observed at the indifferent stage. We discuss these results in regards to the actual knowledge on mussels' reproductive cycle and to the possible impact of xeno-estrogens. Variations of E2 levels in mussels must be taken into account for further studies on xeno-estrogens monitoring using hER reporter cell-lines bioassays.
Keywords : BIOMONITORING ESTROGEN-LIKE MYTILUS GALLOPROVINCIALIS BIOASSAY
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Journal articles
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Submitted on : Friday, March 21, 2014 - 2:27:41 PM
Last modification on : Tuesday, May 28, 2019 - 1:48:04 PM

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INERIS | AGROPOLIS | B3ESTE | UNIV-MONTPELLIER

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Arthur David, Hélène Fenet, Aurélie Escande, Dominique Munaron, David Rosain, et al.. In vitro biomonitoring of contamination by estrogenic compounds in coastals environments : comments on the use of M galloprovincialis. Environmental Toxicology, Wiley, 2012, 27 (2), pp.74-82. ⟨10.1002/tox.20613⟩. ⟨ineris-00963345⟩

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