Literature DB >> 10777247

Possible immunotoxic effects of organochlorines in polar bears (Ursus maritimus) at Svalbard.

A Bernhoft1, J U Skaare, O Wiig, A E Derocher, H J Larsen.   

Abstract

Associations between immunoglobulin G (IgG) levels and the organochlorine contaminants (OCs) polychlorinated biphenyls (PCBs), chlordanes, 1,1-dichloro-2,2-bis(4-chlorophenyl) ethylene (DDE), hexachlorobenzene (HCB), and hexachlorocyclohexanes (HCHs) in blood plasma from polar bears caught at Svalbard were determined. The blood samples were collected from free-living polar bears of different age and sex between 1991 and 1994. The IgC concentration increased with age and was significantly higher in males than in females. IgG was negatively correlated with sigmaPCB level and with three individual PCB congeners, IUPAC numbers 99, 194, and 206. HCB was also negatively correlated with IgG. The significant negative OC correlation with IgG levels may indicate an immunotoxic effect.

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Year:  2000        PMID: 10777247     DOI: 10.1080/009841000156682

Source DB:  PubMed          Journal:  J Toxicol Environ Health A        ISSN: 0098-4108


  9 in total

1.  Environmental contaminants activate human and polar bear (Ursus maritimus) pregnane X receptors (PXR, NR1I2) differently.

Authors:  Roger Lille-Langøy; Jared V Goldstone; Marte Rusten; Matthew R Milnes; Rune Male; John J Stegeman; Bruce Blumberg; Anders Goksøyr
Journal:  Toxicol Appl Pharmacol       Date:  2015-02-10       Impact factor: 4.219

2.  Hematology of southern Beaufort Sea polar bears (2005-2007): biomarker for an Arctic ecosystem health sentinel.

Authors:  Cassandra M Kirk; Steven Amstrup; Rhonda Swor; Darce Holcomb; Todd M O'Hara
Journal:  Ecohealth       Date:  2010-07-09       Impact factor: 3.184

3.  Blood-based biomarkers of selenium and thyroid status indicate possible adverse biological effects of mercury and polychlorinated biphenyls in Southern Beaufort Sea polar bears.

Authors:  Katrina K Knott; Patricia Schenk; Susan Beyerlein; Daryle Boyd; Gina M Ylitalo; Todd M O'Hara
Journal:  Environ Res       Date:  2011-09-08       Impact factor: 6.498

4.  Morbillivirus and Toxoplasma exposure and association with hematological parameters for southern Beaufort Sea polar bears: potential response to infectious agents in a sentinel species.

Authors:  Cassandra M Kirk; Steven Amstrup; Rhonda Swor; Darce Holcomb; Todd M O'Hara
Journal:  Ecohealth       Date:  2010-07-07       Impact factor: 3.184

5.  Measuring environmental stress in East Greenland polar bears, 1892-1927 and 1988-2009: what does hair cortisol tell us?

Authors:  T Ø Bechshøft; F F Rigét; C Sonne; R J Letcher; D C G Muir; M A Novak; E Henchey; J S Meyer; I Eulaers; V L B Jaspers; M Eens; A Covaci; R Dietz
Journal:  Environ Int       Date:  2012-05-07       Impact factor: 9.621

6.  Do organohalogen contaminants contribute to histopathology in liver from East Greenland polar bears (Ursus maritimus)?

Authors:  Christian Sonne; Rune Dietz; Pall S Leifsson; Erik W Born; Robert J Letcher; Maja Kirkegaard; Derek C G Muir; Frank F Riget; Lars Hyldstrup
Journal:  Environ Health Perspect       Date:  2005-11       Impact factor: 9.031

7.  The risk of infection from polychlorinated biphenyl exposure in the harbor porpoise (Phocoena phocoena): a case-control approach.

Authors:  Ailsa J Hall; Kelly Hugunin; Robert Deaville; Robin J Law; Colin R Allchin; Paul D Jepson
Journal:  Environ Health Perspect       Date:  2006-05       Impact factor: 9.031

8.  Environmental and behavioral changes may influence the exposure of an Arctic apex predator to pathogens and contaminants.

Authors:  Todd C Atwood; Colleen Duncan; Kelly A Patyk; Pauline Nol; Jack Rhyan; Matthew McCollum; Melissa A McKinney; Andrew M Ramey; Camila K Cerqueira-Cézar; Oliver C H Kwok; Jitender P Dubey; Steven Hennager
Journal:  Sci Rep       Date:  2017-10-16       Impact factor: 4.379

9.  Is bone mineral composition disrupted by organochlorines in east Greenland polar bears (Ursus maritimus)?

Authors:  Christian Sonne; Rune Dietz; Erik W Born; Frank F Riget; Maja Kirkegaard; Lars Hyldstrup; Robert J Letcher; Derek C G Muir
Journal:  Environ Health Perspect       Date:  2004-12       Impact factor: 9.031

  9 in total

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