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Factors influencing combined exposure to three indicator polychlorinated biphenyls in an adult cohort from Bolivia

Lookup NU author(s): Dr Elaine Mutch


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Polychlorinated biphenyls are persistent organic pollutants that have been used for decades in several industrial applications. Although production of polychlorinated biphenyls was restricted from the 1970s in most countries, substantial amounts remain in old equipment and buildings and they have been detected in various environmental and biological matrices. The main objective of this study was to analyze predictors of the combined exposure to three non-dioxin-like polychlorinated biphenyls (congeners 138, 153 and 180) in serum and adipose tissue from an adult cohort (n=112) living in the city of Santa Cruz de la Sierra (Bolivia) and surrounding towns/villages. A second aim was to identify modifiers that might influence the statistical associations found, using crude, partially-adjusted, and global multiple linear regression models. Main predictors of serum concentrations were occupation and fatty food consumption, while those for adipose tissue concentrations included age, smoking habit, fatty food consumption, and residence. The differences between the two matrices might be derived from their biological meaning, given that adipose tissue concentrations are an indicator of chronic exposure to polychlorinated biphenyls while serum levels are a good predictor of ongoing exposure and the mobilization of polychlorinated biphenyls stored in fatty tissues. Body mass index was found to be an important modifier of these associations. (C) 2012 Elsevier Inc. All rights reserved.

Publication metadata

Author(s): Arrebola JP, Mutch E, Cuellar M, Quevedo M, Claure E, Mejia LM, Fernandez-Rodriguez M, Freire C, Olea N, Mercado LA

Publication type: Article

Publication status: Published

Journal: Environmental Research

Year: 2012

Volume: 116

Pages: 17-25

Print publication date: 09/05/2012

ISSN (print): 0013-9351

ISSN (electronic): 1096-0953

Publisher: Academic Press


DOI: 10.1016/j.envres.2012.04.009


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Funder referenceFunder name
"Impuesto Directo a Hidrocarburos" (IDH) of the Government of Bolivia
CEB-005Granada Research of Excellence Initiative on BioHealth "GREIB" from the University of Granada
CONTAMED FP7-ENV-212502EU Commission
EUS2008-03574Spanish Ministry of Health
FIS PI11/0610Instituto de Salud Carlos III
P09-CTS-5488Regional Government of Andalusia-Spain
SAS PI-0675-2010Regional Government of Andalusia-Spain