Xenobiotic and Immune-Relevant Molecular Biomarkers in Harbor Seals as Proxies for Pollutant Burden and Effects?

• Published in: Archives of Environmental Contamination and Toxicology
• Main Authors: Lehnert, Kristina, Ronnenberg, Katrin, Weijs, Liesbeth, Covaci, Adrian, Das, Krishna, Hellwig, Veronika, Siebert, Ursula
• Other Authors: MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
• Format: Article in Journal/Newspaper
• Language: English
• Published: Springer Science & Business Media B.V. 2016
• Subjects: marine mammals; seals; pollutants; biomarkers; Phoca vitulina; Life sciences; Environmental sciences & ecology; Anatomy (cytology; histology; embryology.) & physiology; Aquatic sciences & oceanology; Sciences du vivant; Sciences de l’environnement & écologie; Anatomie (cytologie; histologie; embryologie.) & physiologie; Sciences aquatiques & océanologie
• Online Access: https://orbi.uliege.be/handle/2268/185212; https://doi.org/10.1007/s00244-015-0202-3

peer reviewed Harbor seals are exposed to increasing pressure caused by anthropogenic activities in their marine environment. Persistent organic pollutants (POPs) and trace elements are hazardous contaminants which accumulate in tissues of harbor seals. POPs and trace elements can negatively affect the immune-system and have been reported e.g. to increase susceptibility to viral infections in seals. Biomarkers of the xenobiotic metabolism, cytokines and heat-shock-protein as cell mediators of the immune-system were established to evaluate the impact of environmental stressors on harbor seals. Harbor seals (n=54) were captured on sandbanks in the North Sea during 2009 to 2012. Medicals including hematology were performed, RNAlater blood samples were taken and analyzed using quantitative Polymerase Chain Reaction. Normalized transcript copy numbers were correlated to hematology and POP concentration in blood, and trace metals in blood and fur.