Human exposure to persistent organic pollutants (POPs) is ubiquitous and found in all individuals. Studies have documented endocrine disrupting effects and impact on reproduction. The aim of the present study was to compare the level of xenoestrogenic activity in serum of groups with varying POP exposure, and to evaluate correlations to the POP biomarkers, 2,2',4,4',5,5'-hexachlorobiphenyl (CB-153) and 1,1-dichloro-2,2-bis (p-chlorophenyl)-ethylene (p,p'-DDE). No strong consistent association between xenoestrogenic net activity and the two POP markers was found. The results showed that the selected POP markers alone can not predict the integrated xenoestrogenic serum activity. Correlations to the POP markers were found at the extreme edge; the Inuit's and Warsaw study groups eliciting high frequency of samples with ER antagonistic and agonistic activity, respectively. We suggest that the variation in xenoestrogenic serum activity reflects differences in POP exposure mixture, genetic factors and/or life style factors.

Xenoestrogenic activity in blood of European and Inuit populations / BONEFELD JORGENSEN, E; Hjelmborg, Ps; Reiner, Ts; Andersen, Bs; Lesovoy, V; Lindh, Ch; Hagmar, L; Giwercman, A; Erlandsen, M; Manicardi, Gian Carlo; Span, M; Toft, G; Bonde, Jp. - In: ENVIRONMENTAL HEALTH. - ISSN 1476-069X. - ELETTRONICO. - 5(2006), pp. 1-12.

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