title: Evaluation of chromosomal damage by flow cytometry in turbot (Scophthalmus maximus L.) exposed to fuel oil.
abstract: Flatfishes, turbots (Scophthalmus maximus), were injected intraperitoneally with two doses of fuel oil number 2. Biliary metabolites were evaluated by fixed fluorescence to verify the efficiency of intoxication. Ethoxyresorufin-O-deethylase (EROD) activity was compared with chromosomal damage measured by flow cytometry. The analysis of biliary metabolites showed a good dose-response relation and constitutes a clear reference for the subsequent measurements. Comparing flow cytometry and EROD results, a shorter delay of response for EROD activity was obtained, but chromosomal damage was significant only after one week. The persistence of the EROD response was shorter, while the genotoxic signal still persisted after one month. The measurement of chromosomal damage allowed a good differentiation between the two tested doses. In the case of EROD activity, the results were less clear. The results suggest that within a few weeks after exposure to fuel oil number 2, the measurements of chromosomal damage by flow cytometry can be used to detect a dose-dependent genotoxic response in fish.
authors.affiliation: Laboratoire de Biologie et Physiologie Cellulaires, UFR Sciences et Techniques, 6 Avenue le Gorgeu, CS 93837, F-29238 Brest Cedex 3, France.
authors.forename: Christelle
authors.initials: C
authors.lastname: Goanvec
authors.forename: Michaël
authors.initials: M
authors.lastname: Theron
authors.forename: Elisabeth
authors.initials: E
authors.lastname: Poirier
authors.forename: Stéphane
authors.initials: S
authors.lastname: Le Floch
authors.forename: Jean
authors.initials: J
authors.lastname: Laroche
authors.forename: Liliane
authors.initials: L
authors.lastname: Nonnotte
authors.forename: Guy
authors.initials: G
authors.lastname: Nonnotte
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002875:Chromosomes / Q000648:ultrastructure*; D019363:Cytochrome P-450 CYP1A1 / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D004784:Environmental Monitoring; D004785:Environmental Pollutants; D005399:Fishes; D005434:Flow Cytometry / Q000379:methods*; D005648:Fuel Oils; D009153:Mutagens / Q000378:metabolism; D011084:Polycyclic Aromatic Hydrocarbons / Q000633:toxicity; D013050:Spectrometry, Fluorescence; D013997:Time Factors; D014874:Water Pollutants, Chemical
chemical_list: D004785:Environmental Pollutants; D005648:Fuel Oils; D009153:Mutagens; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D019363:Cytochrome P-450 CYP1A1