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Immunotoxic effects of single and combined pharmaceuticals exposure on a harbor seal (Phoca vitulina) B lymphoma cell line.

Abstract : The potential risk of pharmaceuticals in the environment to top-predators is still largely unknown. In this study, we assessed the immunotoxic effects of ten pharmaceuticals individually and as mixtures on a harbor seal (Phoca vitulina) B lymphoma cell line. A significant reduction in lymphocyte transformation was observed following an exposure to 12,500μg/L 17α-ethinyl estradiol and 25,000μg/L naproxen. Exposure to 12,500μg/L 17α-ethinyl estradiol decreased the percentage of cell in the G0/G1 phase of the cell cycle while increasing the percentage of cells in the S phase. Carbamazepine exposure increased the amount of cells in the G2/M phase. Binary mixtures showed synergistic effects in lymphocyte transformation, cell cycle and apoptosis assays. Concentrations inducing toxic effects in the cell line were similar to those affecting fish in previous studies. A reduction of functional activities of the immune system may lead to altered host resistance to pathogens in free-ranging pinnipeds.
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https://hal-riip.archives-ouvertes.fr/pasteur-01534638
Contributor : Michel Courcelles Connect in order to contact the contributor
Submitted on : Wednesday, June 7, 2017 - 8:10:26 PM
Last modification on : Monday, October 8, 2018 - 5:44:05 PM

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Christine Kleinert, Emilie Lacaze, Méryl Mounier, Sylvain de Guise, Michel Fournier. Immunotoxic effects of single and combined pharmaceuticals exposure on a harbor seal (Phoca vitulina) B lymphoma cell line.. Marine Pollution Bulletin, Elsevier, 2017, 118 (1-2), pp.237-247. ⟨10.1016/j.marpolbul.2017.02.041⟩. ⟨pasteur-01534638⟩

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