Toxicokinetics and tissue distribution of cadmium-based Quantum Dots in the marine mussel Mytilus galloprovincialis - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environmental Pollution Année : 2015

Toxicokinetics and tissue distribution of cadmium-based Quantum Dots in the marine mussel Mytilus galloprovincialis

Thiago Lopes Rocha
Tânia Gomes
  • Fonction : Auteur
Vânia Serrão Sousa
  • Fonction : Auteur
Luís Miguel Nunes
  • Fonction : Auteur
Margarida Ribau Teixeira
  • Fonction : Auteur
Maria João Bebianno

Résumé

Environmental health hazards of Quantum Dots (QDs) are of emergent concern, but limited data is available about their toxicokinetics (TK) and tissue distribution in marine bivalves. This study investigated the QDs behavior in seawater, their TK and tissue distribution in Mytilus galloprovincialis, in comparison with soluble Cd. Mussels were exposed to CdTe QDs and soluble Cd for 21 days at 10 μgCd L−1 followed by a 50 days depuration. TK of QDs in mussels is related to the homo-aggregate uptake, surface charge, aggregation and precipitation as key factors. There were tissue- and time-dependent differences in the TK of both Cd forms, and soluble Cd is the most bioavailable form. Digestive gland is a preferential site for QDs storage and both Cd forms are not eliminated by mussels (t1/2>50 days). Results indicate that the TK model of CdTe QDs in marine mussels is distinct from their soluble counterparts.
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Dates et versions

hal-03839055 , version 1 (04-11-2022)

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Thiago Lopes Rocha, Tânia Gomes, José Paulo Pinheiro, Vânia Serrão Sousa, Luís Miguel Nunes, et al.. Toxicokinetics and tissue distribution of cadmium-based Quantum Dots in the marine mussel Mytilus galloprovincialis. Environmental Pollution, 2015, 204, pp.207-214. ⟨10.1016/j.envpol.2015.05.008⟩. ⟨hal-03839055⟩
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