Effects of in vivo chronic hydrocarbons pollution on sanitary status and immune system in sea bass (Dicentrarchus labrax L.)
| Autor: | Rami Kanan, Claire Quentel, Stéphane Le Floch, François Lamour, Morgane Danion |
|---|---|
| Přispěvatelé: | Laboratoire de Ploufragan - Plouzané, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Centre de documentation de recherche et d'expérimentations sur les pollutions accidentelles des eaux (Cedre), Cedre |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Health Status
Health Toxicology and Mutagenesis MESH: Random Allocation Bioconcentration 010501 environmental sciences MESH: Leukopenia MESH: Phagocytes 01 natural sciences Leukocyte Count Random Allocation MESH: Body Burden Blood plasma Leukocytes MESH: Animals Polycyclic Aromatic Hydrocarbons Toxicity Tests Chronic MESH: Health Status media_common [SDV.EE]Life Sciences [q-bio]/Ecology environment Phagocytes 0303 health sciences biology Petroleum medicine.anatomical_structure MESH: Water Pollutants Chemical Environmental chemistry Body Burden Dicentrarchus MESH: Bass MESH: Petroleum Pollution media_common.quotation_subject Aquatic Science Gas Chromatography-Mass Spectrometry MESH: Leukocytes MESH: Lymphopenia 03 medical and health sciences MESH: Polycyclic Hydrocarbons Aromatic Animal science Immune system Lymphopenia White blood cell medicine Animals 14. Life underwater Sea bass 030304 developmental biology 0105 earth and related environmental sciences Pollutant MESH: Toxicity Tests Chronic Leukopenia biology.organism_classification MESH: Gas Chromatography-Mass Spectrometry 13. Climate action MESH: Leukocyte Count Bass Water Pollutants Chemical |
| Zdroj: | Aquatic Toxicology Aquatic Toxicology, Elsevier, 2011, 105 (3-4), pp.300-11. ⟨10.1016/j.aquatox.2011.06.022⟩ |
| ISSN: | 0166-445X |
| Popis: | International audience; Following the development of an experimental system to expose adult fish to low and stable concentration of pollutant over a prolonged period, the in vivo effects of hydrocarbons on sanitary status, i.e. the health status of fish with regard to chemical pollution, and immune system in sea bass, Dicentrarchus labrax were assessed. A total of 90 fish were acclimated for 15 days, then 45 fish were exposed to the water soluble fraction (WSF) of Arabian crude oil, similar to a complex pollution by hydrocarbons chronically observed in situ in estuaries, while the 45 other control fish sustained the same experimental conditions in clean seawater. After 21 days of exposure, 30 contaminated and control fish were sampled, then 30 other fish were collected after a 15 day recovery period in clean sea water. PAH concentrations in crude oil, WSF, muscles and bile were measured by gas chromatography coupled with mass spectrometry analysis. White blood cell counts and differential leucocyte counts were determined by classical haematology methods. Cell mortality and phagocytosis activity of leucocytes were analyzed by flow cytometry. Haemolytic alternative complement activity and stress parameters were analyzed in blood plasma by spectrophotometry. After a 21 day exposure period to a mixture of 41 parent/alkylated-PAHs (835 ± 52/85 ± 1 5 ng L(-1)). Fish flesh was contaminated by a bioconcentration of naphthalene very closed to the Reference Dose for Oral Exposure estimated by US-EPA's Integrated Risk Information System, causing a potential risk for human consumers. A leucopenia due to a lymphopenia, a rise in leucocyte mortality and a decrease in phagocytosis activity were noted in contaminated fish compared to controls. All these results may be explained by the damage to membrane cells integrity by uptake of PAHs and suggested an impairment of specific and nonspecific immune systems. After a 15 day recovery period, effects were reversible for sanitary status and an offset in immunity was noted by a significant increase in leucocytes in contaminated fish compared to controls. |
| Databáze: | OpenAIRE |
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