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Polycyclic aromatic hydrocarbon metabolites in Arctic cod (Boreogadus saida) from the Beaufort Sea and associative fish health effects.
Tomy, Gregg T; Halldorson, Thor; Chernomas, Greg; Bestvater, Lianna; Danegerfield, Kirstin; Ward, Tom; Pleskach, Kerri; Stern, Gary; Atchison, Sheila; Majewski, Andrew; Reist, James D; Palace, Vince P.
Afiliação
  • Tomy GT; University of Manitoba , Department of Chemistry, 144 Dysart Road, Winnipeg, Manitoba R3T 2N2, Canada.
Environ Sci Technol ; 48(19): 11629-36, 2014 Oct 07.
Article em En | MEDLINE | ID: mdl-25187975
In 2012, Arctic cod (Boreogadus saida) were collected from offshore regions of the Beaufort Sea to determine the concentrations of CYP1A1 phase I metabolites of polycyclic aromatic hydrocarbons (OH-PAHs) in liver and to correlate measured concentrations with (i) morphometric measurements that are known to be indicative of fish health and, (ii) biochemical end points of health including vitamin A/E and metabolites and hepatic deiodinase activity (DI). Four ring OH-PAHs were detected in 90% of our samples with a mean liver concentration of 1829.2 ± 159.2 ng/g (ww). Total (∑) concentrations of 5/6-membered ring OH-PAHs in liver were smaller [mean of 931.6 ± 104.3 ng/g, (ww)] and detected less frequently (75%) than the 4-ring OH-PAHs. Fish length and liver weight were both negatively correlated to ∑ concentrations of 4-ringed OH-PAHs (p < 0.001). Liver somatic index was also negatively correlated to ∑4-OH-PAHs (p < 0.05) but not for ∑5/6-OH-PAHs (p > 0.1). There was a significant positive relationship between DI and 4-ring OH-PAHs (p < 0.05) in liver, suggesting an induction of this enzyme. No such correlation was observed for the 5/6-ring OH-PAHs. Retinyl palmitate (RP) was the only vitamin that could be measured in liver ranging from 0.230 to 26.3 ug/g (ww). No associations between RP and levels of the 4- or 5/6-ringed OH-PAHs were observed. Continued baseline studies are clearly warranted to further understand effects of OH-PAHs on fish health before planned exploration activities begin in this region.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Hidrocarbonetos Policíclicos Aromáticos / Poluentes Químicos da Água / Monitoramento Ambiental / Gadiformes Tipo de estudo: Risk_factors_studies Limite: Animals País/Região como assunto: America do norte Idioma: En Ano de publicação: 2014 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Hidrocarbonetos Policíclicos Aromáticos / Poluentes Químicos da Água / Monitoramento Ambiental / Gadiformes Tipo de estudo: Risk_factors_studies Limite: Animals País/Região como assunto: America do norte Idioma: En Ano de publicação: 2014 Tipo de documento: Article