Estimates of trace metal bioavailability to humans ingesting contaminated oysters

Bragigand, Virginie; Berthet, B.; Amiard, J. C.; Rainbow, Philip S.

doi:10.1016/j.fct.2004.07.011

Cited by 62 publications

(23 citation statements)

References 24 publications

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“…In spite of the fact that the first view seems to show a very worrying picture, it should be taken into account that such standards are expressed as total concentrations of metals and not as metal concentrations that are potentially bioavailable to human consumption (Bragigand et al 2004). Although until recently only metals present in the soluble fraction of mollusks had been considered as bioavailable to the consumer, some authors have also studied the bioavailability of metals present in insoluble fractions (Bragigand et al 2004;Reinfelder and Fisher 1994;Wallace et al 1998;Wallace and Luoma 2003).…”

Section: Risks For Human Consumptionmentioning

confidence: 98%

As, Cd, Cu, Mn, Pb, and Zn Contents in Sediments and Mollusks (Hexaplex trunculus and Tapes decussatus) from Coastal Zones of a Mediterranean Lagoon (Mar Menor, SE Spain) Affected by Mining Wastes

María-Cervantes

Jiménez-Cárceles

Álvarez-Rogel

2008

Water Air Soil Pollut

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Individuals of Hexaplex trunculus, Tapes decussatus, and associated sediments were collected from 16 coastal sampling plots of the Mar Menor lagoon (SE Spain), and the metal and As concentrations were determined. The sediments had maximum values (in milligrams per kilogram dry weight [d.w.]) of 7,132 for Zn; 6,975 for Pb; 5,039 for Mn; 501 for As; 74 for Cu; and 9.1 for Cd. Specimens of H. trunculus could be collected from all the sampling plots, and it was found that concentrations of Zn (between 883 and 3,130 mg kg −1 d.w.), Pb (between 0.09 and 222 mg kg −1 d.w.), Mn (between 7.6 and 17.7 mg kg −1 d.w.), As (between 144 and 418 mg kg −1 d.w.), and Cd (between undetectable and 8.4 mg kg −1 d.w.) in soft tissues significantly increased when concentrations in sediments increased. H. trunculus apparently regulated Cu assimilation (concentrations between 17.7 and 47.2 mg kg −1 d.w.) in its soft tissues. T. decussatus was very scarce or even absent from sites with higher metal and As contents in the sediments. Hence, H. trunculus could be used as a bioindicator of metals and As pollution, but not T. decussatus. Based on our results, a human health risk exists because the species analyzed are collected from the studied zone and so are consumed by the population.

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Section: Risks For Human Consumptionmentioning

confidence: 98%

As, Cd, Cu, Mn, Pb, and Zn Contents in Sediments and Mollusks (Hexaplex trunculus and Tapes decussatus) from Coastal Zones of a Mediterranean Lagoon (Mar Menor, SE Spain) Affected by Mining Wastes

María-Cervantes

Jiménez-Cárceles

Álvarez-Rogel

2008

Water Air Soil Pollut

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“…This study group also has reported wide variation in Cd-U (Yamagami et al 2006), assumedly due to seasonal changes in types of foods consumed (Kruzynski 2004;Bragigand et al 2004).…”

Section: Introductionmentioning

confidence: 94%

Biological variations in cadmium, α1-microglobulin, β2-microglobulin and N-acetyl-β-d-glucosaminidase in adult women in a non-polluted area

Yamagami

Suna

Fukui

et al. 2007

Int Arch Occup Environ Health

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Variations in GM values for Cd-U, alpha 1-MG-U, beta 2-MG-U, and NAG-U at different time of sampling are small so that single measurement would be acceptable as far as the evaluation on a group basis is the study objective. Within-subject variations are wide however, the ratio of the largest value over the smallest value being 4-5 or more, irrespective of correction for urine density. Therefore, care should be practiced when evaluation on an individual basis is intended. Very low within-subject variation in Cd-B may suggest the advantage of Cd-B over Cd-U for individual evaluation among general populations if blood sampling is accepted.

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“…Furthermore, Cheung & Wang (2005) have shown that metals in metal-rich granules that are in the insoluble fraction of prey can be bioavailable to the gastropod Thais clavigera. In oysters, a significant fraction of the trace metals stored in insoluble form may be released during in vitro digestion (silver: 35 to 63%; cadmium: 30 to 48%; zinc: 70 to 88%) (Bragigand et al 2004). Even sediment-bound metals may be partly available to filter or deposit feeders using incubation of sediments with digestive fluids from different species of marine benthic invertebrates (Mayer et al 2001, Fan et al 2002, Yan & Wang 2002, Weston et al 2004).…”

Section: Ae (%)mentioning

confidence: 99%

Physico-chemical form of trace metals accumulated by phytoplankton and their assimilation by filter-feeding invertebrates

Ng¹,

Amiard‐Triquet²,

Rainbow³

et al. 2005

Mar. Ecol. Prog. Ser.

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This study investigated whether the nature of the binding of the trace metals cadmium, silver and zinc accumulated by phytoplankton can affect their subsequent assimilation efficiencies (AE) in 3 filter-feeding benthic invertebrates, the green mussel Perna viridis, the clam Ruditapes philippinarum and the barnacle Balanus amphitrite. Seven phytoplankton species were chosen from a wide systematic range to ensure large differences in the partitioning of their accumulated trace metals into 3 fractions: (1) exchangeable metal adsorbed on the outside of the cells, as defined by extraction with the chelating agent 8-hydroxyquinoline-5-sulphonate; (2) incorporated metal that is in a soluble form; and (3) insoluble incorporated metal. There were few significant correlations between AE and the percentage of phytoplankton metal incorporated into any 1 fraction or combination of fractions. There is no support, therefore, for a generalised conclusion that any of the 3 fractions isolated represents the sole form of phytoplankton metal that is bioavailable for trophic transfer to a herbivore. Even trace metals bound to the insoluble fraction in phytoplankton may be bioavailable to herbivores. Furthermore, there were no consistent effects of phytoplankton concentration on metal AEs in 1 of the herbivores -P. viridis. There was no evidence that the AE of any of the 3 trace metals was changed when the herbivores were feeding on the phytoplankton species (Thalassiosira weissflogii) on which they were fed during acclimation. KEY WORDS: Trace metal assimilation · Phytoplankton · Filter-feeding invertebratesResale or republication not permitted without written consent of the publisher

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Estimates of trace metal bioavailability to humans ingesting contaminated oysters

Cited by 62 publications

References 24 publications

As, Cd, Cu, Mn, Pb, and Zn Contents in Sediments and Mollusks (Hexaplex trunculus and Tapes decussatus) from Coastal Zones of a Mediterranean Lagoon (Mar Menor, SE Spain) Affected by Mining Wastes

As, Cd, Cu, Mn, Pb, and Zn Contents in Sediments and Mollusks (Hexaplex trunculus and Tapes decussatus) from Coastal Zones of a Mediterranean Lagoon (Mar Menor, SE Spain) Affected by Mining Wastes

Biological variations in cadmium, α1-microglobulin, β2-microglobulin and N-acetyl-β-d-glucosaminidase in adult women in a non-polluted area

Physico-chemical form of trace metals accumulated by phytoplankton and their assimilation by filter-feeding invertebrates

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