Infants' indoor and outdoor residential exposure to benzene and respiratory health in a Spanish cohort
Por:
Ferrero A, Esplugues A, Estarlich M, Llop S, Cases A, Mantilla E, Ballester F and Iñiguez C
Publicada:
1 mar 2017
Ahead of Print:
4 ene 2017
Resumen:
Benzene exposure represents a potential risk for children's health. Apart from being a known carcinogen for humans (group 1 according to IARC), there is scientific evidence suggesting a relationship between benzene exposure and respiratory problems in children. But results are still inconclusive and inconsistent. This study aims to assess the determinants of exposure to indoor and outdoor residential benzene levels and its relationship with respiratory health in infants. Participants were 1-year-old infants (N = 352) from the INMA cohort from Valencia (Spain). Residential benzene exposure levels were measured inside and outside dwellings by means of passive samplers in a 15-day campaign. Persistent cough, low respiratory tract infections and wheezing during the first year of life, and covariates (dwelling traits, lifestyle factors and sociodemographic data) were obtained from parental questionnaires. Multiple Tobit regression and logistic regression models were performed to assess factors associated to residential exposure levels and health associations, respectively. Indoor levels were higher than outdoor ones (1.46 and 0.77 mu g/m(3), respectively; p < 0.01). A considerable percentage of dwellings, 42% and 21% indoors and outdoors respectively, surpassed the WHO guideline of 1.7 mu g/m(3) derived from a lifetime risk of leukemia above 1/100 000. Monitoring season, maternal country of birth and parental tobacco consumption were associated with residential benzene exposure (indoor and outdoors). Additionally, indoor levels were associated with mother's age and type of heating, and outdoor levels were linked with zone of residence and distance from industrial areas. After adjustment for confounding factors, no significant associations were found between residential benzene exposure levels and respiratory health in infants. Hence, our study did not support the hypothesis for the benzene exposure effect on respiratory health in children. Even so, it highlights a public health concern related to the personal exposure levels, since a considerable number of children surpassed the abovementioned WHO guideline for benzene exposure. (C) 2016 The Authors. Published by Elsevier Ltd.
Filiaciones:
:
Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I, Universitat de València, Avenida de Catalunya 21, 46020, Valencia, Spain
Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Melchor Fernández Almagro, 3-5, 28029, Madrid, Spain.
:
Faculty of Nursing and Chiropody, Universitat de València, Av. Blasco Ibáñez, 13, 46010 Valencia, Spain
Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I, Universitat de València, Avenida de Catalunya 21, 46020, Valencia, Spain
Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Melchor Fernández Almagro, 3-5, 28029, Madrid, Spain
:
Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I, Universitat de València, Avenida de Catalunya 21, 46020, Valencia, Spain
Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Melchor Fernández Almagro, 3-5, 28029, Madrid, Spain
:
Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I, Universitat de València, Avenida de Catalunya 21, 46020, Valencia, Spain
Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Melchor Fernández Almagro, 3-5, 28029, Madrid, Spain
Mantilla E:
Center for Mediterranean Environmental Studies, (CEAM), Parque Tecnológico, Charles R. Darwin, 14, 46980 Paterna, Valencia, Spain
:
Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I, Universitat de València, Avenida de Catalunya 21, 46020, Valencia, Spain
Faculty of Nursing and Chiropody, Universitat de València, Av. Blasco Ibáñez, 13, 46010 Valencia, Spain
Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Melchor Fernández Almagro, 3-5, 28029, Madrid, Spain
:
Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I, Universitat de València, Avenida de Catalunya 21, 46020, Valencia, Spain
Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Melchor Fernández Almagro, 3-5, 28029, Madrid, Spain
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