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	Provedor de dados ArchiMer (2) Autor Cosson, Rp (2) Boulegue, J (1) Fiala-medioni, A (1) Geret, F (1) Rousse, N (1) Palavra-chave Metallothioneins (2) Métallothionéines (2) Bio-accumulation (1) Bioaccumulation (1) Biomarker (1) Biomarqueur (1) Crassostrea gigas (1) Hydrothermal (1) Lysosomes (1) Metals (1) Métaux (1) Toxicity (1) Toxicité (1) Mais... Tipo do documento Text (2) Ano 2000 (1) 1998 (1) País France (2) Idioma Francês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Bioaccumulation des métaux chez le mytilidae hydrothermal Bathymodiolus sp. de la ride médio-atlantique ArchiMer Rousse, N; Boulegue, J; Cosson, Rp; Fiala-medioni, A. The hydrothermal environment is characterised, among other things, by a high metal concentration, related to the convective sea-water circulation inside the oceanic crust and its interaction with basaltic rocks. The biological communities associated with the hydrothermal system can survive in this toxic environment owing to their ability to regulate their intracellular metal levels by excretion or accumulation of metal ions in non-toxic forms. Various detoxification processes have been previously studied within an hydrothermal organism: immobilisation and precipitation of the metal in lysosomal systems, or binding to specific and soluble ligands such as metallothioneins. The later are heat stable and characterised by a high content of cysteine. The... Tipo: Text Palavras-chave: Bio-accumulation; Métallothionéines; Lysosomes; Toxicité; Hydrothermal; Bioaccumulation; Metallothioneins; Lysosomes; Toxicity; Hydrothermal. Ano: 1998 URL: http://archimer.ifremer.fr/doc/00325/43662/43238.pdf Utilisation des métallothionéines comme biomarqueur de la contamination métallique : variabilité entre sites et organes chez l'huı̂tre Crassostrea gigas ArchiMer Geret, F; Cosson, Rp. Heavy metals (Cd, Cu, Hg and Zn) and metallothionein levels were determined in oysters Crassostrea gigas from two sites: the Gironde Estuary (contaminated site) and Bourgneuf Bay (uncontaminated site). Metallothionein levels led us to suspect the presence of cadmium in the environment when quantified in the gills. Soluble cadmium and metallothioneins were positively correlated in the digestive gland of oysters from Gironde (contaminated site), but metallothionein levels in this organ were not significantly different from levels observed in the digestive gland of oysters from Bourgneuf Bay (uncontaminated site). Conversely, no correlation was noticed between metals and metallothioneins in the gills of oysters from Gironde despite metallothionein levels... Tipo: Text Palavras-chave: Métallothionéines; Métaux; Crassostrea gigas; Biomarqueur; Metallothioneins; Metals; Crassostrea gigas; Biomarker. Ano: 2000 URL: http://archimer.ifremer.fr/doc/00324/43561/44058.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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