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

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 Myt...

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Bibliographic Details
Published in:Environmental toxicology 2012, Vol.27 (2), p.74-82
Main Authors: David, Arthur, Fenet, Hélène, Escande, Aurélie, Munaron, Dominique, Rosain, David, Maillot-Marechal, Emmanuelle, Ait-Aissa, Selim, Casellas, Claude, Gomez, Elena
Format: Article
Language:English
Subjects:
Ecotoxicology
Environmental Sciences
Life Sciences
Toxicology
Online Access:Get full text
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Summary: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.
ISSN:1520-4081
1522-7278
DOI:10.1002/tox.20613