Reference : Effects of persistent organic pollutants on the thyroid function of the European sea ...
Scientific journals : Article
Life sciences : Aquatic sciences & oceanology
http://hdl.handle.net/2268/994
Effects of persistent organic pollutants on the thyroid function of the European sea bass (Dicentrarchus labrax) from the Aegean Sea, is it an endocrine disruption?
English
Schnitzler, Joseph mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Koutrarkis, Emmanuil mailto [Fisheries Research Institute> National Agricultural Research Foundation> 640 07 Nea Peramos, Kavala, Greece]
Siebert, Ursula mailto [Research- and Technology Centre Westcoast> Christian-Albrecht-University Kiel> Büsum, Germany.]
Thomé, Jean-Pierre mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Ecologie animale et écotoxicologie >]
Das, Krishna mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Oct-2008
Marine Pollution Bulletin
Pergamon
56
10
1755-1764
Yes (verified by ORBi)
International
0025-326X
Oxford
United Kingdom
[en] Endocrine disruption ; Dicentrarchus labrax ; Aegean sea
[en] We evaluated the alterations of organochlorinated compounds such as polychlorobiphenyls (PCB), dichloro-diphenyl-dichloroethylene (DDE) and dichloro-diphenyl-trichloroethane (DDT) on the thyroid in wild and cultured sea bass (Dicentrarchus labrax) at environmental concentrations. These compounds influence the endocrine system of many fish species and are qualified as endocrine disruptors. The thyroid seems to be a target organ. Two alteration endpoints: the thyroid histology and the muscular thyroid hormone concentrations, were used simultaneously.

High concentrations in PCBs and DDT were detected in muscles, supporting the idea that the Mediterranean fauna could be more polluted than the Atlantic fauna. The high abundance of DDE indicates a progressive degradation of remnant DDT load and the absence of new inputs in this area. Aquaculture sea bass shows a significant higher amount of pollutants on fresh weight basis (especially PCBs) in their muscles compared to the wild sea bass. Those differences may be related mainly to the contaminations of diet.

Thyroid parameters vary between wild and aquaculture sea bass, wild sea bass were characterized by higher follicle diameters, epithelial cell heights and muscular T4 concentrations. A significant relationship between persistent organic pollutants (muscular PCBs and DDT concentration) and the different thyroid parameters (diameters of follicles, epithelial cell heights and muscular T4 levels) could be observed, which support the hypothesis that these compounds have an adverse impact on thyroid morphometry and function.
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/994
http://www.sciencedirect.com/science/article/B6V6N-4T5HJ7K-1/2/983640b957ab47002f7ffcad408a54dd

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