title: Biological effects of polycyclic aromatic hydrocarbons (PAH) and their first metabolic products in in vivo exposed Atlantic cod (Gadus morhua).
abstract: The monitoring of the presence of polycyclic aromatic hydrocarbons (PAH) in the aquatic environment is a worldwide activity since some of these compounds are well-established carcinogens and mutagens. Contaminants in this class are in fact regarded as priority hazardous substances for environmental pollution (Water Framework Directive 2000/60/EC). In this study, Atlantic cod (Gadus morhua) was selected to assess in vivo effects of two PAH and their first metabolic products, namely, the corresponding trans-dihydrodiols, using biological markers. Fish were exposed for 1 wk to a single PAH (naphthalene or chrysene) and its synthetic metabolites ((1R,2R)-1,2-dihydronaphthalene-1,2-diol and (1R,2R)-1,2-dihydrochrysene-1,2-diol) by intraperitoneal injection in a continuous seawater flow system. After exposure, PAH metabolism including PAH metabolites in bile and ethoxyresorufin O-deethylase (EROD) activity, oxidative stress glutathione S-transferases (GST) and catalase (CAT) activities, and genotoxicity such as DNA adducts were evaluated, as well as general health conditions including condition index (CI), hepatosomatic index (HSI), and gonadosomatic index (GSI). PAH metabolite values were low and not significantly different when measured with the fixed-wavelength fluorescence screening method, while the gas chromatography-mass spectroscopy (GC-MS) method showed an apparent dose response in fish exposed to naphthalene. DNA adduct levels ≥0.16 × 10(-8) relative adduct level (RAL) were detected. It should be noted that 0.16 × 10(-8) RAL is considered the maximal acceptable background level for this species. The other biomarkers activities of catalase, GST, and EROD did not display a particular compound- or dose-related response. The GSI values were significantly lower in some chrysene- and in both naphthalene- and naphthalene diol-exposed groups compared to control.
authors.affiliation: a International Research Institute of Stavanger (IRIS) , Environment Department , Randaberg , Norway.
authors.forename: Daniela M
authors.initials: DM
authors.lastname: Pampanin
authors.affiliation: b Adn'tox, Centre François Baclesse , Caen , France.
authors.forename: Jeremie
authors.initials: J
authors.lastname: Le Goff
authors.affiliation: a International Research Institute of Stavanger (IRIS) , Environment Department , Randaberg , Norway.
authors.forename: Karianne
authors.initials: K
authors.lastname: Skogland
authors.affiliation: a International Research Institute of Stavanger (IRIS) , Environment Department , Randaberg , Norway.|c Faculty of Science and Technology, Department of Mathematics and Natural Science , University of Stavanger , Stavanger , Norway.
authors.forename: Cristian R
authors.initials: CR
authors.lastname: Marcucci
authors.affiliation: a International Research Institute of Stavanger (IRIS) , Environment Department , Randaberg , Norway.
authors.forename: Kjell Birger
authors.initials: KB
authors.lastname: Øysæd
authors.affiliation: c Faculty of Science and Technology, Department of Mathematics and Natural Science , University of Stavanger , Stavanger , Norway.
authors.forename: Marianne
authors.initials: M
authors.lastname: Lorentzen
authors.affiliation: c Faculty of Science and Technology, Department of Mathematics and Natural Science , University of Stavanger , Stavanger , Norway.
authors.forename: Kåre B
authors.initials: KB
authors.lastname: Jørgensen
authors.affiliation: c Faculty of Science and Technology, Department of Mathematics and Natural Science , University of Stavanger , Stavanger , Norway.
authors.forename: Magne O
authors.initials: MO
authors.lastname: Sydnes
mesh_terms: D000818:Animals; D015415:Biomarkers / Q000378:metabolism; D004781:Environmental Exposure; D004784:Environmental Monitoring; D005260:Female; D048389:Gadus morhua / Q000378:metabolism*; D008401:Gas Chromatography-Mass Spectrometry; D008297:Male; D009152:Mutagenicity Tests; D018384:Oxidative Stress / Q000187:drug effects*; D011084:Polycyclic Aromatic Hydrocarbons / Q000633:toxicity*; D013050:Spectrometry, Fluorescence; D014874:Water Pollutants, Chemical / Q000633:toxicity*
chemical_list: D015415:Biomarkers; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical