TY - JOUR
T1 - Validation of bioassays for assessing the contamination of marine environments
AU - Mcdonald, Susanne J.
AU - Willett, Kristine L.
AU - Safe, Stephen H.
AU - Beatty, Karla B.
AU - Steinberg, Michael
AU - Mayor, Philippe
AU - Kennicutt, Mahlon C.
PY - 1996
Y1 - 1996
N2 - Various biomarkers were used to determine the exposure offish (Arius felis and Micropogon undulatus) from Galveston Bay (GB), Texas, USA to organic contaminants. Sediment levels of polynuclear aromatic hydrocarbons (PAHs) in GB ranged from 81 to >1000 ng/g and polychlorinated biphenyls (PCBs) were <20 ng/g at all stations. No significant differences in hepatic concentrations of contaminants and ethoxyresorufin O-deethylase (EROD) activity, CYP1A mRNA levels, and DNA adducts were found in A. felis from GB. However, significant differences in biliary concentrations of naphthalene, phenanthrene, and benzo[a]pyrene metabolites were observed. Induced EROD activities and elevated levels of biliary PAH metabolites were measured in M. undulatus from the two most contaminated sites in GB. Induction toxic equivalents (I-TEQs), derived from dosing rat hepatoma H4IIE cells with hepatic extracts of A. felis, were correlated with tissue levels of ≥4-ring PAHs.
AB - Various biomarkers were used to determine the exposure offish (Arius felis and Micropogon undulatus) from Galveston Bay (GB), Texas, USA to organic contaminants. Sediment levels of polynuclear aromatic hydrocarbons (PAHs) in GB ranged from 81 to >1000 ng/g and polychlorinated biphenyls (PCBs) were <20 ng/g at all stations. No significant differences in hepatic concentrations of contaminants and ethoxyresorufin O-deethylase (EROD) activity, CYP1A mRNA levels, and DNA adducts were found in A. felis from GB. However, significant differences in biliary concentrations of naphthalene, phenanthrene, and benzo[a]pyrene metabolites were observed. Induced EROD activities and elevated levels of biliary PAH metabolites were measured in M. undulatus from the two most contaminated sites in GB. Induction toxic equivalents (I-TEQs), derived from dosing rat hepatoma H4IIE cells with hepatic extracts of A. felis, were correlated with tissue levels of ≥4-ring PAHs.
KW - Biomarkers
KW - Fish
KW - Marine
KW - Organic contaminants
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U2 - 10.1080/10406639608544649
DO - 10.1080/10406639608544649
M3 - Article
AN - SCOPUS:0030374560
VL - 11
SP - 57
EP - 65
JO - Polycyclic Aromatic Compounds
JF - Polycyclic Aromatic Compounds
SN - 1040-6638
IS - 1-4
ER -