Article (Scientific journals)
Effects of Aroclor 1254 on oxidative stress in developing Xenopus laevis tadpoles.
Gillardin, Virginie; Silvestre, Frederic; Divoy, Celine et al.
2009In Ecotoxicology and Environmental Safety, 72 (2), p. 546-51
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Keywords :
Animals; Antioxidants/metabolism; Antithyroid Agents/metabolism/toxicity; Body Weight; Chlorodiphenyl (54% Chlorine)/metabolism/toxicity; Glutathione Transferase/metabolism; Larva/drug effects/growth & development/metabolism; Lipid Peroxidation/drug effects/physiology; Male; Oxidative Stress/drug effects/physiology; Superoxide Dismutase/metabolism; Time Factors; Xenopus laevis/growth & development/metabolism
Abstract :
[en] Over the last decades, amphibians decline has been reported worldwide. Exposure to polychlorinated biphenyls (PCBs) is one of the possible causes in addition to climate changes, UV-radiation or habitat destruction. In the present study, we tested the hypothesis that PCBs could induce oxidative stress in young tadpoles. Developing Xenopus laevis were exposed from 2- to 5-d postfertilization (pf) to 0.1 or 1 mg/l of Aroclor 1254. Lipid peroxidation and antioxidant systems (SOD, CAT, GST, GPx, GR activities and t-GSH level) were investigated in whole organisms. Exposure to both concentrations did not impact on the survival and development whereas the average body weight decreased. Exposure to 1 mg/l of Aroclor 1254 induced a significant (p<0.05) increase of GST activity when compared to controls 0 and DMSO. The other antioxidant enzymes and LPO evaluation remained unchanged. Our results demonstrate that exposure of X. laevis tadpoles to environmental concentrations of Aroclor 1254 interfere with normal growth. They also highlight that very young X. laevis tadpoles express antioxidant systems.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Gillardin, Virginie
Silvestre, Frederic
Divoy, Celine
Thomé, Jean-Pierre ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Ecologie animale et écotoxicologie
Kestemont, Patrick
Language :
English
Title :
Effects of Aroclor 1254 on oxidative stress in developing Xenopus laevis tadpoles.
Publication date :
2009
Journal title :
Ecotoxicology and Environmental Safety
ISSN :
0147-6513
eISSN :
1090-2414
Publisher :
Academic Press, Orlando, United States - Florida
Volume :
72
Issue :
2
Pages :
546-51
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS FRIA grant
Available on ORBi :
since 26 November 2013

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