Temporal monitoring of liver and kidney lesions in contaminated East Greenland polar bears (Ursus maritimus) during 1999-2010.
作者： Christian Sonne , Robert J. Letcher , Pall S. Leifsson , Frank F. Rigét , Thea Ø. Bechshøft
DOI: 10.1016/J.ENVINT.2012.07.002
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摘要: Abstract Organohalogen contaminants bioaccumulate to high concentrations in tissues of polar bears ( Ursus maritimus ). The exposure levels are the order be toxic inner organs like liver and kidney. We therefore investigated temporal development lesions (n = 115) kidney (n = 122) samples from East Greenland taken over 12 year period 1999 2010. Seven seven were observed which six age-related. Controlling for this, analyses showed that hepatic steatosis renal cell infiltrations, glomerular sclerosis tubular hyperplasia decreased time (all p trans -nonachlor being positively associated with (p = 0.06) while dichlorodiphenyltrichloroethanes negatively (p = 0.02). These results suggest specific have or increased long-range transported organohalogen mercury may among co-factors responsible these observations. relationships important take into account when biomonitoring health pollution wildlife species such as bears.
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