Airborne behavior of suspended particulate matters containing Japanese cedar pollen allergens in urban, roadside and mountain areas of Saitama, Japan

概要

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The investigation of airborne behavior of the Japanese cedar pollen 1 allergen Cry j 1 exfoliated from the Ubisch bodies on the pollen surfaces was carried out at the urban, roadside and mountain areas during the pollination seasons of FY 2005-FY 2006 in Saitama, Japan.<BR>The higher concentrations of Cry j 1 were determined in the particle size below 1.1 1.1 m in the urban and mountain area. Furthermore, Cry j 1 was higher in the particle size below 1.1μ m in the roadside than those in the mountain area in the study of FY 2006. It was suggested that the deposited pollens are resuspended from the ground by heavy traffic, and change to fine airborne particles which were observed morphologically by a scanning electron microscope to confirm exfoliated Ubisch bodies of the pollens. Therefore, these pollen allergen particles appear to play a key role in the increasing incidence of asthma in the lower respiratory tract. In our opinions from this study, it is suggested that it is important to determine the size distribution of airborne Japanese cedar pollens and to investigate the chemical, physical and biomedical combination effects on their suspended allergen particulate matters in near future.
社団法人大気環境学会の論文