Genetic and environmental factors are thought to influence the activity of systemic lupus erythematosus (SLE), but relatively little is known about the effects of ambient air pollution. Using pollution data from air monitoring stations in the urban centers in Santiago Chile, along with daily patient hospitalization data from 2001 to 2012, an association between ambient air pollution and daily hospital admissions for SLE was tested using generalized linear models. Averaged over all regions pollutant mean 24 h concentrations were: 0.96 ppm carbon monoxide (CO), 64 ppb ozone (O), 43 ppb nitrogen dioxide (NO), 9 ppb sulphur dioxide (SO), 29 μg/m particulate matter ≤ 2.5 μm in mean aerodynamic diameter (PM), and 67 μg/m particulate matter ≤ 10 μm in diameter (PM). The relative risk estimates in single pollutant models for an interquartile range (IQR) increase in pollutant were: RR = 1.34 (95% CI: 1.06-1.83) for SO, RR = 1.60 (95% CI: 1.15-2.24) for CO, and RR = 1.41 (95% CI: 1.14-1.86) for PM. In two-pollutant models, the significance of SO and PM persisted despite adjustments for each of the other measured pollutants. These findings suggest that acute increases in air pollution increase the risk of hospitalization with a primary diagnosis of SLE.
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| http://dx.doi.org/10.1016/j.envres.2020.110469 | DOI Listing |
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