title: Ethoxyresorufin-O-deethylase (EROD) activity and bile metabolites as contamination indicators in Baltic Sea perch: determination by HPLC.
abstract: Exposure of Baltic Sea perch (Perca fluviatilis) to organic contaminants was investigated by means of liver enzyme activity, measured as ethoxyresorufin-O-deethylase (EROD) activity, and PAH metabolites excreted to bile. Female perch used in the study were caught in coastal waters of the western Gulf of Finland. Reaction conditions were optimised for determination of EROD activity in liver. A high-performance liquid chromatography (HPLC) method with fluorescence detection was developed to separate the interfering fluorescent signal from the signal due to EROD activity. EROD activity in perch varied within a concentration range of 0.30-14 pmol min(-1)mg(-1) protein. Recent PAH exposure was indicated in enhanced levels of the bile metabolite 1-hydroxypyrene, which varied between 213 and 1149 microg kg(-1). No correlation was indicated between hepatic EROD activity and concentration of 1-hydroxypyrene.
authors.affiliation: Finnish Institute of Marine Research, Erik Palménin aukio 1, P.O. Box 2, FI-00561 Helsinki, Finland.
authors.forename: Anna-Liisa
authors.initials: AL
authors.lastname: Pikkarainen
mesh_terms: D000818:Animals; D001646:Bile / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D019363:Cytochrome P-450 CYP1A1 / Q000187:drug effects / Q000378:metabolism*; D004784:Environmental Monitoring / Q000379:methods*; D005260:Female; D005387:Finland; D008099:Liver / Q000187:drug effects / Q000378:metabolism; D010471:Perches / Q000378:metabolism*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000378:metabolism / Q000633:toxicity; D012623:Seawater; D014874:Water Pollutants, Chemical / Q000633:toxicity; D014876:Water Pollution
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D019363:Cytochrome P-450 CYP1A1