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The Effect of Nitrogen Oxides on Bronchial Reactivity and Sensitivity

Research Project

Project/Area Number 60570247
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Hygiene
Research InstitutionTokyo Women's Medical College

Principal Investigator

JUN KAGAWA  Tokyo Women's Medical College;Professor, 医学部, 教授 (90055955)

Co-Investigator(Kenkyū-buntansha) SATORU SHIMIZU  Tokyo Women's Medical College; Instructor, 医学部, 助手 (70158963)
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1987: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1986: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1985: ¥400,000 (Direct Cost: ¥400,000)
KeywordsNitrogen dioxide / Nitrogrnoxides / Bronchial reactivity / Bronchial sensitivity / Histamine
Research Abstract

In order to investigate the effect of repeated exposure to 0.5 ppm NO_2 on bronchial response to histamine challenge, 24 male Hartley guinea pigs were exposed to 0.5 ppm NO_2 or filteres air for 5 hr/days, 5days/week, for 11 weeks. Evary 10 days, boy weight, total respiratory flow resistance and bronchial reacivity to histamine aerosol were determined. In NO_2 group, a tendency of dectrase of body weight was observed. The effective concentration of histamine that produced a 100% increase of baseline total respiratory flow resistance before histamine challenge (PC_<100>) in NO_2 group was lower than that of filters air group during the first several weeks of exposure. However. these differences between NO_2 and filtered air groups were small and not statistically significant.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 香川順ら: 第27回大気汚染学会講演要旨集. 432 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 香川順ら: 第28回大気汚染学会講演要旨集. 412 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] KAGAWA,J., et al.: "Bronchial reactivity test of guinea pigs" Rpoceeding of the 27th Air Pollution Research Conference (Taikisenn Gatukai). 432 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] KAGhAWA,J., et al.: "The effect of repeated exposure to 0.5 ppm NO2 on bronchial reactivity in guineq pigs" Proceeding of the 28th Air Pollution Research Conference. 412 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Kagawa,J.: Tokai J.Exp.Clin.Med.10. 349-353 (1985)

    • Related Report
      1986 Annual Research Report
  • [Publications] 香川順: 大気汚染学会講演要旨集. 432 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] Kagawa,J.: Aerosols(Research,Risk Assessment and Control Strategies)edited by S.D.Lee et al.Lewis Pubishers,Inc.Ml.U.S.A.683-697 (1986)

    • Related Report
      1986 Annual Research Report
  • [Publications] 香川順: 日本衛生学雑誌. (1987)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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