2007 Fiscal Year Final Research Report Summary
STUDIES ON CHEMICAL AND PHYSICAL EFFECTS OF AIR POLLUTANTS ON AIRBORNE POLLEN IN URBANAREA OF JAPAN
| Project/Area Number |
17310031
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Risk sciences of radiation/Chemicals
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| Research Institution | Saitama University |
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Principal Investigator |
WANG Qingyue Saitama University, Graduate School of Science & Engineering, Associate Professor (30344956)
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| Co-Investigator(Kenkyū-buntansha) |
UCHIYAMA Iwao Kyoto University, Graduate School of Engineering, Professor (20151897)
MIWA Makoto Center for Environmental Science in Saitama, 埼玉県環境科学国際センター, Researcher (30375589)
SAKAMOTO Kazuhiko Saitama University, Graduate School of Science & Engineering, Professor (20111411)
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| Project Period (FY) |
2005 – 2007
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| Keywords | Japanese cedar pollen / Urban area / Air pollutants / Allergen particles / Size distribution / Collection of air samples / Analytical methods |
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| Research Abstract |
The purpose of this study is to evaluate the adverse factors influencing by air pollutants and to aid biomedical research by investigating the deposition of air pollutants on Japanese cedar pollen between urban and mountainous areas. Suspended particulate matter and Japanese cedar perigonium pollen were collected to identify the deposition of air pollutants at Saitama urban area and a mountainous area, during the pollination season. Ionic and metallic components of these samples and perigonium and pollen were analyzed. We found that crustal components (Al, Fe and Ti) tended to deposit on perigonium pollen. The amount of ionic components of particles (NO_3^-, SO_4^<2-> and NH_4^+) and gaseous pollutants (NO_2, SO_2 and NH_3) deposited on the perigonium pollen were higher in the urban than in the mountainous areas, the fact of which was proven by determination of gaseous pollutants exposed to Japanese cedar pollen. It is suggested that these phenomena may affect pollinosis and therefore
… More
it is necessary to investigate implication on biomedical researches.
In addition, morphological observation of Ubisch bodies exfoliated from pollen and ruptured pollens was performed and confirmed with a scanning electron microscope. Moreover, the existing evidences of visualized Cry j 1 and Cry j 2 allergen particles below 1.1 μm were also sensitively found by an immunofluorescence technique with a fluorescence microscope. Simultaneously, the high concentrations of Cry j 1 and/or Cry j 2 were determined in the fine particle sizes below 1.1 μm. It was suggested that airborne respirable particulate matters containing Cry j 1 and Cry j 2 play a key role in the increasing incidence of asthma in the lower respiratory tract. Furthermore, since Cry j 1 (or Cry j 2) fine particles were suspended in the atmosphere over a long time more after released, the daily variation delays in the peaks of these concentrations compared with the peaks of airborne pollen counts were observed. It is important to observe and determine the size distribution of airborne Japanese cedar pollen allergen particles in the long-term sampling research continually, and to elucidate the allergen particle release mechanisms. Less
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[Journal Article] Daily variation differences between airborne Japanese cedar pollen and its respirable allergen particulate matters during the most severe pollination seasons2008
Author(s)
Wang, Q., Kurihara, K., Kiryu, H., Sakamoto, K., Miwa, M., Uchiyama, I.
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Journal Title
Journal of Aerosol Research Vol. 23 (in press)
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Airborne behavior of suspended particulate matters containing Japanese cedar pollen allergens in urban, roadside and mountain areas of Saitama, Japan2007
Author(s)
Kurihara, K, Wang, Q., Kiryu, H., Sakamoto, K, Miwa, M., Uchiyama, I.
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Journal Title
Journal of Japan Society for Atmospheric Environment Vol. 42
Pages: 362-368
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Size distribution of airborne particles containing Japanese cedar pollen allergens (Cry j 1 and Cry j 2)2007
Author(s)
Kurihara, K., Wang, Q., Kiryu, H., Sakamoto, K, Miwa, M., Uchiyama, I.
Organizer
48th Symposium of Japan Society for Atmospheric Environment (391)
Place of Presentation
in Japanese
Year and Date
20070000
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Size distribution of airborne particles containing Japanese cedar pollen allergen Cry j 22007
Author(s)
Kurihara, K., Wang, Q., Kiryu, H., Sakamoto, K., Miwa, M., Uchiyama, I.
Organizer
24th Symposium on AEROSOL SCI. & TECH. (Wako, Japan) (189-190)
Place of Presentation
in Japanese
Year and Date
20070000
Description
「研究成果報告書概要(欧文)」より
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[Presentation] The elution of the allergen Cry j 1 and water-soluble organic carbon of the cedar pollen2007
Author(s)
Kiryu, H., Wang, Q., Kurihara, K., Sakamoto, K., Miwa, M., Uchiyama, I.
Organizer
48th Meeting of the Palynological Society of Japan (Kurashiki, Japan) (54)
Place of Presentation
in Japanese
Year and Date
20070000
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Investigation of the airborne cedar pollen allergen content grain in Saitama Prefecture2007
Author(s)
Kurihara, K., Wang, Q., Kiryu, H., Sakamoto, K., Miwa, M., Uchiyama, I.
Organizer
8th Meeting of the Palynological Society of Japan (Kurashiki, Japan) (55)
Place of Presentation
in Japanese
Year and Date
20070000
Description
「研究成果報告書概要(欧文)」より
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[Book] 48th Symposium of Japan Society for Atmospheric Environment2007
Author(s)
Kurihara, K., Wang, Q., Kiryu, H., Sakamoto, K, Miwa, M., Uchiyama, I.
Total Pages
391
Publisher
Size distribution of airborne particles containing Japanese cedar pollen allergens (Cry j 1 and Cry j 2)
Description
「研究成果報告書概要(欧文)」より
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[Book] 24th Symposium on AEROSOL SCI. & TECH. (Wako, Japan)2007
Author(s)
Kurihara, K., Wang, Q., Kiryu, H., Sakamoto, K., Miwa, M., Uchiyama, I.
Total Pages
189-190
Publisher
Size distribution of airborne particles containing Japanese cedar pollen allergen Cry j 2
Description
「研究成果報告書概要(欧文)」より
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[Book] 24th Symposium on AEROSOL SCI. & TECH. (Wako, Japan)2007
Author(s)
Trek Mohamed Naser, Yuji Yoshimura, Kazuhiko Sekiguchi, Wang Q. and Kazuhiko Sakamoto
Total Pages
191-192
Publisher
Atmospheric concentration of selected polycyclic aromatic hydrocarbons in PM2. 5 at a roadside and an urban background area, in Saitama city, Japan
Description
「研究成果報告書概要(欧文)」より
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[Book] 48th Meeting of the Palynological Society of Japan (Kurashiki, Japan)2007
Author(s)
Kiryu, H., Wang, Q., Kurihara, K., Sakamoto, K., Miwa, M., Uchiyama, I.
Total Pages
54
Publisher
The elution of the allergen Cry j 1 and water-soluble organic carbon of the cedar pollen
Description
「研究成果報告書概要(欧文)」より
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[Book] 8th Meeting of the Palynological Society of Japan (Kurashiki, Japan)2007
Author(s)
Kurihara, K., Wang, Q., Kiryu, H., Sakamoto, K., Miwa, M., Uchiyama, I.
Total Pages
55
Publisher
Investigation of the airborne cedar pollen allergen content grain in Saitama Prefecture
Description
「研究成果報告書概要(欧文)」より
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