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Research on relationship of low exposure to asbestos and roentogenographic changes in chest

Research Project

Project/Area Number 03670277
Research Category

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

Allocation TypeSingle-year Grants
Research Field Hygiene
Research InstitutionUniversity of Occupational and Environmental Health, Japan

Principal Investigator

HIGASHI Toshiaki  University of Occupational and Environmental Health, Japan, Department of Work Systems and Health, Professor, 産業生態科学研究所・作業病態学, 教授 (10119000)

Co-Investigator(Kenkyū-buntansha) HYAKUDO Toshihisa  University of Occupational and Environmental Health, Japan, Department of Enviro, 産業生態科学研究所・労働衛生工学, 助手 (20228753)
FUJINO Akihiro  University of Occupational and Environmental Health, Japan, Department of Health, 産業生態科学研究所・産業保健管理学, 助手 (00209074)
Project Period (FY) 1991 – 1992
Project Status Completed (Fiscal Year 1992)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsASBESTOS / EPIDEMIOLOGY / CHEST ROENTOGENOGRAPH / PNEUMOCONIOTIC / PLEURAL THICKENING / PLEURAL PLAQUE / EXPOSURE-RESPONSE RELATIONSHIP / 曝露量ー反応関係
Research Abstract

A cross sectional study on chest roentogenographs of asbestos containing products manufacturing workers in order to evaluate the effect of relatively low exposure to asbestos. Among 1496 subjects, 1077 male (age 42 + 8.7) and 419 females (age 40 + 9.4), 92 cases (6.1%) had pnemoconiotic changes (PR1*) and 87 cases (5.8%) had pleural changes. The range of asbestos exposure was from 6 months to 29 years. The prevalence of pleural thickening (5.9%) was higher in asbestos exposed workers in comparison with referent group (3.4%) who had been engaged in a refractory plant with dust exposure other than mineral fibers, and the rate of that in workers
(10.8%) With over 15 years asbestos exposure was significantly (p<0.05) higher than that of the referent group (5.4%). Twelve cases of pleural plaques (0.8%) were observed in asbestos exposed group and the rate was slightly higher than the rates (0.03-0.6%) in public population reported by other researchers using similar diagnostic criteria. Age and cummulative asbestos exposure index (estimated environmental concentration in f/ml x exposure duration in years) were suggested to contribute the prevalence of pleural changes, analyzed by using a logistic regression model.

Report

(3 results)
  • 1992 Annual Research Report   Final Research Report Summary
  • 1991 Annual Research Report
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 東 敏昭,永田 忠彦,江頭 完治: "比較的低濃度石綿曝露作業者の直接X線写真所見と曝露量との関連の解析" INNERVISION. 7(7). 17-18 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 東 敏昭 田中 勇武: "作業環境におけるエアロゾル" エアロゾル研究. 7(2). 113-118 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] "Asbestos Research and Regulation in Japan,in Asbestos Medical Research Peters,G and Peters,Beds" Butterworth,California, 207-262(56) (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Higashi,T., Nagata,N. and Egashira,K: "Research on relationship of low exposure to asbestos and roentogenographic changes in chest" INNERVISION. 7(7). 17-18 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Higashi,T. and Tsuchiya,K: "Asbestos Research and Regulation in Japan, in Peters, G and Peters, B. eds : Asbestos Medical Research" Butterworth, California. 207-262. 56 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] Higashi,T. and Tanaka,I: "Aerosols in Workplace" J Aerosol Research, Japan. 7(2). 113-118 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1992 Final Research Report Summary
  • [Publications] 東 敏昭,永田 忍彦,江頭 完冶: "比較的低濃度石綿曝露作業者の直接X線写真所見と曝露量との関連の解析" INNERVISION. 7(7). 17-18 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 東 敏昭.田中 勇武: "作業環境におけるエアロゾル" エアロゾル研究. 7(2). 113-118 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] "Asbestos Research and Regulation in Japan,in Asbestos Medical Reseach Peters,G and Peters,B eds:" Butterworth,California, PP207-262 (1991)

    • Related Report
      1992 Annual Research Report
  • [Publications] Higashi,T.,Tsuchiya,K.Eds.George A.Peters,Barbara J.Peters: "Batterworth,Caltornia" Chapter 9.Asbestos Research and regulation in Japan.In International Asbestos Medical Research (Volume 6 of the Sourcebook),pp207-262. 1991. (467)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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