Diurnal and Nocturnal Behaviour of Airborne Cryptomeria japonica Pollen Grains and the Allergenic Species in Urban Atmosphere of Saitama, Japan
Japanese cedar (Cryptomeria japonica) pollinosis is the most popular pollinosis in Japan. It has been reported that Cryptomeria japonica pollen allergenic species are suspended as fine particles in the urban atmosphere. These allergenic fine particles are responsible for inducing asthma by breaking...
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Asian Association for Atmospheric Environment
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doaj-9fa5a420bbdc4ec5bf1d6335df2c47322020-11-25T02:24:43ZengAsian Association for Atmospheric EnvironmentAsian Journal of Atmospheric Environment1976-69122287-11602013-06-0172657110.5572/ajae.2013.7.2.065Diurnal and Nocturnal Behaviour of Airborne Cryptomeria japonica Pollen Grains and the Allergenic Species in Urban Atmosphere of Saitama, JapanQingyue Wang0Shinichi Nakamura 1Senlin Lu2Daisuke Nakajima3Miho suzuki 4Kazuhiko Sekiguchi 5Makoto Miwa6Graduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura, Saitama, Saitama 338-8570, JapanGraduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura, Saitama, Saitama 338-8570, JapanSchool of Environmental and Chemical Engineering, Shanghai University, 99, Shangda Road, Baoshan, Shanghai 200444, ChinaResarch Center for Environmental Risk, National institute for environmental studies, Onogawa 16-2, Tsukuba, Ibaraki 305-8506, JapanGraduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura, Saitama, Saitama 338-8570, JapanGraduate School of Science and Engineering, Saitama University, Shimo-Okubo 255, Sakura, Saitama, Saitama 338-8570, JapanCenter for Environmental Science in Saitama, Kamitanadare 914, Kisai, Kitasaitama, Saitama 347-0115, JapanJapanese cedar (Cryptomeria japonica) pollinosis is the most popular pollinosis in Japan. It has been reported that Cryptomeria japonica pollen allergenic species are suspended as fine particles in the urban atmosphere. These allergenic fine particles are responsible for inducing asthma by breaking into the lower respiratory tract. It has also been found that pollinosis symptoms on the sufferers appear mainly at night-time by the results from epidemiological studies. However, the exact reason for these phenomena is not yet clarified. In this study, the diurnal and nocturnal behaviours of Cryptomeria japonica pollen grains and their allergenic species in the urban area of Saitama city of Kanto Plain were investigated. Airborne pollen grains and allergenic Cry j 1 concentrations in total suspended particulate matter (TSP) were investigated at two sampling sites, a heavy traffic road (roadside site) and at the balcony of the 10th floor of the Building of Research and Project of Saitama University (general urban site). The latter sampling site where located about 300 m away from the roadside site was used as a general urban site unaffected by automobile traffic. The airborne pollen counts were measured with a real-time pollen monitor. Cry j 1 particles were collected with two high volume air samplers, and these concentrations were measured by surface plasmon resonance method with a Biacore J system. The diurnal variation of the airborne pollen counts was similar to the trends of temperature and wind speed during the day-time; whereas its tendency with wind speed trend was not observed during the night-time. Airborne pollen counts were lower with northern wind than with southern wind because the pollen comes from the mountainous areas, and the mountains in the south are closer, about half the distance to the northern mountains. It is suggested that the peaks of airborne pollen counts during night-time in the sampling site occurred by transport of pollen grains released during day-time in the mountainous forest areas, located c.a. 100 km away from the sampling site. On the roadside site the allergenic Cry j 1 concentrations were higher than at the general urban site, nevertheless pollen grains counts were lower. These results suggested that worsening of pollinosis symptoms during nighttime in urban area was caused by transport of pollen grains during day-time in the mountainous forest areas. Moreover, pollen allergenic species become different morphology from pollen grain at roadside site, and the subsequent pollen grains re-suspension by automobile traffic.http://asianjae.org/_common/do.php?a=full&b=11&bidx=1566&aidx=19769cryptomeria japonica pollendiurnal behaviourallergenic cry j 1suspended particulate mattersurban atmosphere |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Qingyue Wang Shinichi Nakamura Senlin Lu Daisuke Nakajima Miho suzuki Kazuhiko Sekiguchi Makoto Miwa |
spellingShingle |
Qingyue Wang Shinichi Nakamura Senlin Lu Daisuke Nakajima Miho suzuki Kazuhiko Sekiguchi Makoto Miwa Diurnal and Nocturnal Behaviour of Airborne Cryptomeria japonica Pollen Grains and the Allergenic Species in Urban Atmosphere of Saitama, Japan Asian Journal of Atmospheric Environment cryptomeria japonica pollen diurnal behaviour allergenic cry j 1 suspended particulate matters urban atmosphere |
author_facet |
Qingyue Wang Shinichi Nakamura Senlin Lu Daisuke Nakajima Miho suzuki Kazuhiko Sekiguchi Makoto Miwa |
author_sort |
Qingyue Wang |
title |
Diurnal and Nocturnal Behaviour of Airborne Cryptomeria japonica Pollen Grains and the Allergenic Species in Urban Atmosphere of Saitama, Japan |
title_short |
Diurnal and Nocturnal Behaviour of Airborne Cryptomeria japonica Pollen Grains and the Allergenic Species in Urban Atmosphere of Saitama, Japan |
title_full |
Diurnal and Nocturnal Behaviour of Airborne Cryptomeria japonica Pollen Grains and the Allergenic Species in Urban Atmosphere of Saitama, Japan |
title_fullStr |
Diurnal and Nocturnal Behaviour of Airborne Cryptomeria japonica Pollen Grains and the Allergenic Species in Urban Atmosphere of Saitama, Japan |
title_full_unstemmed |
Diurnal and Nocturnal Behaviour of Airborne Cryptomeria japonica Pollen Grains and the Allergenic Species in Urban Atmosphere of Saitama, Japan |
title_sort |
diurnal and nocturnal behaviour of airborne cryptomeria japonica pollen grains and the allergenic species in urban atmosphere of saitama, japan |
publisher |
Asian Association for Atmospheric Environment |
series |
Asian Journal of Atmospheric Environment |
issn |
1976-6912 2287-1160 |
publishDate |
2013-06-01 |
description |
Japanese cedar (Cryptomeria japonica) pollinosis is the most popular pollinosis in Japan. It has been reported that Cryptomeria japonica pollen allergenic species are suspended as fine particles in the urban atmosphere. These allergenic fine particles are responsible for inducing asthma by breaking into the lower respiratory tract. It has also been found that pollinosis symptoms on the sufferers appear mainly at night-time by the results from epidemiological studies. However, the exact reason for these phenomena is not yet clarified. In this study, the diurnal and nocturnal behaviours of Cryptomeria japonica pollen grains and their allergenic species in the urban area of Saitama city of Kanto Plain were investigated. Airborne pollen grains and allergenic Cry j 1 concentrations in total suspended particulate matter (TSP) were investigated at two sampling sites, a heavy traffic road (roadside site) and at the balcony of the 10th floor of the Building of Research and Project of Saitama University (general urban site). The latter sampling site where located about 300 m away from the roadside site was used as a general urban site unaffected by automobile traffic. The airborne pollen counts were measured with a real-time pollen monitor. Cry j 1 particles were collected with two high volume air samplers, and these concentrations were measured by surface plasmon resonance method with a Biacore J system. The diurnal variation of the airborne pollen counts was similar to the trends of temperature and wind speed during the day-time; whereas its tendency with wind speed trend was not observed during the night-time. Airborne pollen counts were lower with northern wind than with southern wind because the pollen comes from the mountainous areas, and the mountains in the south are closer, about half the distance to the northern mountains. It is suggested that the peaks of airborne pollen counts during night-time in the sampling site occurred by transport of pollen grains released during day-time in the mountainous forest areas, located c.a. 100 km away from the sampling site. On the roadside site the allergenic Cry j 1 concentrations were higher than at the general urban site, nevertheless pollen grains counts were lower. These results suggested that worsening of pollinosis symptoms during nighttime in urban area was caused by transport of pollen grains during day-time in the mountainous forest areas. Moreover, pollen allergenic species become different morphology from pollen grain at roadside site, and the subsequent pollen grains re-suspension by automobile traffic. |
topic |
cryptomeria japonica pollen diurnal behaviour allergenic cry j 1 suspended particulate matters urban atmosphere |
url |
http://asianjae.org/_common/do.php?a=full&b=11&bidx=1566&aidx=19769 |
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