NickelMaghrebV1, Main, Exploration, bibRecord, 000355

Mixture Toxicity Assessment of Nickel and Chlorpyrifos in the Sea Bass Dicentrarchus labrax

Identifieur interne : 000355 ( Main/Exploration ); précédent : 000354; suivant : 000356

Mixture Toxicity Assessment of Nickel and Chlorpyrifos in the Sea Bass Dicentrarchus labrax

Auteurs : Mohamed Banni [Tunisie] ; Jamel Jebali [Tunisie] ; Hamadi Guerbej [Tunisie] ; Francesco Dondero [Italie] ; Hamadi Boussetta [Tunisie] ; Aldo Viarengo [Italie]

Source :

Archives of environmental contamination and toxicology : (Print) [ 0090-4341 ] ; 2011.

RBID : Pascal:11-0118661

Descripteurs français

Pascal (Inist)
- Association toxique, Nickel, Pollution, Ecotoxicologie, Environnement, Milieu marin, Polluant, Chlorpyriphos, Dicentrarchus labrax.
Wicri :
- topic : Nickel, Pollution, Milieu marin, Polluant.

English descriptors

KwdEn :
- Chlorpyrifos, Dicentrarchus labrax, Ecotoxicology, Environment, Marine environment, Nickel, Pollutant, Pollution, Toxic association.

Abstract

The present research work was designed to study Dicentrarchus labrax biotransformation and detoxification responses to acute exposure to nickel (Ni) and chlorpyrifos (CHP). Sexually immature sea bass were treated by intraperitoneal injection of nickel chloride (500 μg kg^-1), chlorpyrifos (10 mg kg^-1), and their binary mixture for 1, 3, and 7 days. Ni and CHP accumulation was quantified in liver after the exposure periods. The following biological responses were measured: (1) NADPH cytochrome P450 reductase (NCR) activity, as phase I biotransformation parameter; (2) gluthathione S-transferase (GST) activity as a phase II conjugation enzyme, acetylcholinesterase activity, and metallothionein (MT) content. Ni bioaccumulation in the liver resulted in an increasing uptake up to 15.48 μg g^-1 wet weight (Ni-treated animals) and 16.73 μg g^-1 wet weight (mixture-treated animals) after 7 days of exposure. CHP accumulation showed a distinct pattern in animals exposed to the mixture of chemicals in comparison with CHP-treated animals. NCR activity exhibited a marked activation in CHP and mixture-treated animals. GST activity was significantly increased starting from 1 day exposure in CHP-treated animals and after 3 days in Ni-treated animals. MT accumulation increased in all conditions, with a marked synergetic effect after 7 days of exposure. These data should be carefully considered in view of the biological effects of mixture pollutants, particularly in fish farming conditions.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">The present research work was designed to study Dicentrarchus labrax biotransformation and detoxification responses to acute exposure to nickel (Ni) and chlorpyrifos (CHP). Sexually immature sea bass were treated by intraperitoneal injection of nickel chloride (500 μg kg<sup>-1</sup>
), chlorpyrifos (10 mg kg<sup>-1</sup>
), and their binary mixture for 1, 3, and 7 days. Ni and CHP accumulation was quantified in liver after the exposure periods. The following biological responses were measured: (1) NADPH cytochrome P450 reductase (NCR) activity, as phase I biotransformation parameter; (2) gluthathione S-transferase (GST) activity as a phase II conjugation enzyme, acetylcholinesterase activity, and metallothionein (MT) content. Ni bioaccumulation in the liver resulted in an increasing uptake up to 15.48 μg g<sup>-1</sup>
 wet weight (Ni-treated animals) and 16.73 μg g<sup>-1</sup>
 wet weight (mixture-treated animals) after 7 days of exposure. CHP accumulation showed a distinct pattern in animals exposed to the mixture of chemicals in comparison with CHP-treated animals. NCR activity exhibited a marked activation in CHP and mixture-treated animals. GST activity was significantly increased starting from 1 day exposure in CHP-treated animals and after 3 days in Ni-treated animals. MT accumulation increased in all conditions, with a marked synergetic effect after 7 days of exposure. These data should be carefully considered in view of the biological effects of mixture pollutants, particularly in fish farming conditions.</div>
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Mixture Toxicity Assessment of Nickel and Chlorpyrifos in the Sea Bass Dicentrarchus labrax

Mixture Toxicity Assessment of Nickel and Chlorpyrifos in the Sea Bass Dicentrarchus labrax

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri