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Journal Article
Research Support, Non-U.S. Gov't
Association between Asian Dust-Borne Air Pollutants and Daily Symptoms on Healthy Subjects: A Web-Based Pilot Study in Yonago, Japan.
During the spring, Asian dust (AD) repeatedly makes its way to Japan, originating from drylands. We evaluated the association between AD-borne air pollutants and daily reported subjective symptoms in healthy subjects. We constructed an Internet questionnaire on daily ocular, nasal, respiratory, and skin symptoms. Forty-two healthy volunteers residents of Yonago (mean age, 33.57) were selected from the self-reporting web-based survey and recorded their symptoms between 1 and 31 of March 2013. We also collected information on levels of suspended particulate matter (SPM), particulate matter < 2.5 µ m (PM2.5 ), sulfur dioxide (SO2 ), and nitrogen oxide (NO x ) per hour on each of those days. SPM and PM2.5 were the dominant pollutants recorded throughout the month. A positive correlation was observed between SPM and ocular ( r = 0.475, p < 0.01), nasal ( r = 0.614, p < 0.001), and skin ( r = 0.445, p < 0.05) symptoms. PM2.5 correlations were significant for ocular ( r = 0.428, p < 0.05), nasal ( r = 0.560, p < 0.01), and skin ( r = 0.437, p < 0.05) symptoms. Our findings provide introductory evidence of AD-borne air pollutants and their association with several bodily symptoms in healthy subjects with the implementation of a self-administrated web-based survey application.
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