PMID: 11912053Mar 26, 2002Paper

Kinetics of metal elimination in oysters from a contaminated estuary

Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP
Alain GeffardC Amiard-Triquet

Abstract

In oysters Crassostrea gigas translocated from a metal-enriched estuary (Gironde, France) to a comparatively clean site, the Bay of Bourgneuf (France), Cd, Cu and Zn concentrations were determined monthly in the whole soft tissues, or in different fractions (cytosolic or insoluble) of gills and digestive glands. In all cases, the concentrations of all of the three metals decreased logarithmically and half-lives were always shortest for Cd (86-251 days). After 4 months, the Cd concentration had become not significantly different from the threshold considered safe for human consumption (1 mg kg(-1) wet wt.). In the digestive gland, half-lives were similar in cytosolic and insoluble fractions. In contrast, in the gills, elimination patterns differed markedly between these fractions. The long half-lives calculated for divalent metals in the insoluble fraction of the gills (1505 and 3010 days for Zn and Cu, respectively) is possibly due to a fossilization of metals in intracellular membrane-bound inclusions as shown previously in Ostrea edulis. It is interesting to underline that elimination is fastest for cytosolic metals compared to the insoluble fraction.

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Citations

Dec 14, 2006·Archives of Environmental Contamination and Toxicology·A Serafim, M J Bebianno
Jul 5, 2008·Environmental Monitoring and Assessment·Hsiao-Chien YehWei-Hsien Wang
Feb 18, 2010·Environmental Science and Pollution Research International·Andrea Luna-AcostaHélène Thomas-Guyon
May 5, 2009·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·Jocelyne Pellerin, Jean-Claude Amiard
Mar 11, 2009·Ecotoxicology and Environmental Safety·W Smaoui-DamakA Hamza-Chaffai
Jul 6, 2007·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·I KetataA Hamza-Chaffai
May 12, 2011·Environmental Toxicology and Chemistry·Wen-Xiong WangCaihuan Ke
Jul 24, 2014·Environmental Toxicology and Chemistry·Lei Wang, Wen-Xiong Wang
Sep 22, 2012·Environmental Toxicology and Chemistry·Alexandre DevosBruno Fievet
Mar 11, 2008·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Jean-Claude AmiardWen-Xiong Wang

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