| Project/Area Number |
25550006
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Saitama University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 有機エアロゾル / 花粉アレルゲン / 粒径分布 / Cryj 1 / 大気エアロゾル / 有機炭素成分 / 花粉微小化 / 共通抗原 |
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| Outline of Final Research Achievements |
In this study, we have collected Japanese cedar pollen from two sites of urban residential zones of Saitama City, Japan during the pollination period. At the same time, we have investigated the airborne pollen behavior, and studied the relationships between airborne pollen counts and meteorological factors such rainfall, wind speed and wind direction. The respirable particles in sizes from <1.1 micrometers to >7.0 micrometers were collected by two Andersen air samplers and major allergenic concentrations of Cry j 1 were determined using an ELISA (enzyme-linked immunosorbent assay) method. It was suggested that the pollens are resuspended by the heavy traffic in the urban area, and released Cry j 1 as the airborne fine particles. These airborne fine allergenic particles easily break through the ventilation of indoor environment and appear to play an important role in the increasing incidence of asthma in the lower human respiratory tract.
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