Association between personal exposure to ambient metals and respiratory disease in Italian adolescents: A cross-sectional study

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Abstract

Background: Release of ambient metals during ferroalloy production may be an important source of environmental exposure for nearby communities and exposure to these metals has been linked to adverse respiratory outcomes. We sought to characterize the association between personal air levels of metals and respiratory health in Italian adolescents living in communities with historic and current ferroalloy activity. Methods: As part of a study in the industrial province of Brescia, Italy, 410 adolescents aged 11-14 years were recruited. Participants were enrolled from three different communities with varying manganese (Mn) levels: Bagnolo Mella which has current ferroalloy activity, Valcamonica, which has historic ferroalloy activity and Garda Lake which has no history of ferroalloy activity. Particulate matter <10μm in diameter (PM10) was collected for 24h in filters using personal sampling. Mn, nickel (Ni), zinc (Zn), chromium (Cr) and iron (Fe) were measured in filters using x-ray fluorescence. Data on respiratory health was collected through questionnaire. Data for 280 adolescents were analyzed using a modified Poisson regression, and risk ratios were calculated for an interquartile (IQR) range increase in each pollutant. Results: In adjusted models including PM10 as a co-pollutant, we found significant associations between concentrations of Mn (RR: 1.09, 95% CI [1.00, 1.18] per 42ng/m3 increase), Ni (RR: 1.11, 95% CI [1.03, 1.21] per 4ng/m3 increase) and Cr (RR: 1.08, 95% CI [1.06, 1.11] per 9ng/m3 increase) and parental report of asthma. We also found significant associations between increased Mn and Ni and increased risk of asthma medication use in the past 12months (RR: 1.13, 95% CI [1.04, 1.29] and (RR: 1.13, 95 % CI [1.01, 1.27] respectively). Conclusions: Our findings suggest that exposure to ambient Mn, Ni and Cr may be associated with adverse respiratory outcomes.

Figures

  • Table 1 Comparison of population characteristics by site
  • Fig. 1 Box plots of pollutant concentrations by study site. Kruskal Wallis Test. *p <0.05. **p <0.01
  • Table 2 Spearman correlation matrix for pollutants
  • Table 3 Single pollutant models for associations between pollutants and respiratory outcomes
  • Table 4 Two-pollutant models for associations between pollutants and respiratory outcomes

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APA

Rosa, M. J., Benedetti, C., Peli, M., Donna, F., Nazzaro, M., Fedrighi, C., … Lucchini, R. (2016). Association between personal exposure to ambient metals and respiratory disease in Italian adolescents: A cross-sectional study. BMC Pulmonary Medicine, 16(1). https://doi.org/10.1186/s12890-016-0173-9

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