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Wood Dust in Furniture Makers and Its Carcinogenic Effect due to Long Term Exposure by Inhalation in Rats

Research Project

Project/Area Number 60480196
Research Category

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

Allocation TypeSingle-year Grants
Research Field 公衆衛生学
Research InstitutionUniversity of Occupational and Environmental Health, Jpapn

Principal Investigator

YOSHIMURA Takesumi  UOEH, Inst. Ind. Ecol. Sci., Dept. Clin. Epidem., Professor, 産業生態科学研究所・臨床疫学, 教授 (20037435)

Co-Investigator(Kenkyū-buntansha) HORIE Akio  UOEH, School of Medicine, Dept. Pathol. Oncol., Professor, 医学部・第一病理学, 教授 (80122852)
TANAKA Isamu  UOEH, Inst. Ind. Ecol. Sci., Dept. Environ. Health eng., Associate Professor, 産業生態科学研究所・労働衛生工学, 助教授 (00038035)
Project Period (FY) 1985 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥4,500,000 (Direct Cost: ¥4,500,000)
Fiscal Year 1987: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1986: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1985: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsWood dust / Nasal cancer / Animal experiment / Carcinogenicity / 木工家具製造作業 / 鼻腔 / 副鼻腔癌 / 木工作業
Research Abstract

In furniture makers in Japan, various wood materials from Japan, North America and trpoical zone, have been used. No major single wood material has been specified through the interview survey in major furniture industries. Therefore, for the present animal experiment, beech was chosen, because in western countries wood dust from beech nas been considered to be one of the causal agents for nasal cancer in man and because in Jpapn beech was also used before 1960s'.
This study aims to see the carcinogenic effect of beech wood dust due to long term exposure by inhalation in rats. Fresh beech wood dust has been generated by a newly developed dust generator. 20 male Wister rats were exposed to beech wood dust for 6 horus a day, 5 days a week, for 6 months in the exposure chamber. On average, 15.1mg/m^3 of wood dust per day with 7.4 <micrn>m diameter of a particle of wood dust were exposed. Non-exposed 20 male Wister rats as a control group were fed in an adjacent chamber. One year after the exposure, exposed and non-exposed rats were decapitated and head including nasal cavity and sinus, lung, liver, kidney, spleen and pancreas were removed from each rat and examined pathologically under an optical microscope.
In the exposed rats, one malignant lymphoma in the spleen was observed. On the other hand, in the non-exposed rats, one hepatocellular carcinoma, one malignant lymphoma, one acinal cell adenoma in the pancreas have been found. No dysplasia was observed and no particles of wood dust was found in the lung among exposed rats. There was no remarkable differences in growth and weight of each organs removed between the exposed and non-exposed rats.
Although this experiment showed no carcinogenic effect among the exposed rats to beech wood dust, further experiment should be continued to clarify the carcinogenicity of wood dust.

Report

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

    (18 results)

All Other

All Publications (18 results)

  • [Publications] Yasushi Kodama: Biological Trace Element Research. 7. 1-9 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Akio Horie: Biological Trace Element Research. 7. 223-239 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Isamu Tanaka: Biological Trace Element Research. 8. 203-210 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Isamu Tanaka: Biological Trace Element Research. 9. 187-195 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Koji Matsuno: Environmental Research. 41. 195-200 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Isamu Tanaka: American Industrial Hygiene Association Journal. 48. 330-334 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Isamu Tanaka: Journal of UOEH. 9. 361-367 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 石松維世: 産業医科大学雑誌. 9. 379-383 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 大野良之: "臨床家のためのがんのケースコントロール研究-理論と実際" 篠原出版株式会社, (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Yasushi Kodama: "Pulmonary Deposition and Clearance of Nickel Oxide Aerosol by Inhalation" Biological Trace Element Research. 7. 1-9 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Akio Horie: "Electoron Microscopical Findings with Special Reference to Cancer in Rats Caused by Inhalation of Nickel Oxide" Biological Trace Element Research. 7. 223-239 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Isamu Tanaka: "Biological Half Time of Deposited Nickel Oxide Aerosol in Rat Lung by Inhalation" Biological Trace Element Research. 8. 203-210 (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Isamu Tanaka: "Retention of Nickel Oxide (Green) Aerosol in Rat Lungs by Long-Term Inhalation" Biological Trace Element Research. 9. 187-195 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Koji Matsuno: "Pulmonary Deposition and Clearance of Coal Fly Ash Aerosol by Inhalation" Environmental Research. 41. 195-200 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Isamu Tanaka: "Cumulative Toxicity Potential of Methomyl Aerosol by Repeated Inhalation" American Industrial Hygiene Association Journal. 48. 330-334 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Isamu Tanaka: "Particle Size Distribution in Lungs and Bronchopulmonary Lymph Nodes due to Long-Term Exposure to Coal Fly Ash Aerosol in Rats" Journal of UOEH. 9. 361-367 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Sumiyo Ishimatsu: "The Inhaled Effects of Fenitrothion Powder on Blood Cholinesterase in Rats" Journal of UOEH. 9. 379-383 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Yoshiyuki Ohmo: Shinohara Publishers. Case Control Study on Cancer for Clinician -Theory and Practice-, (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary

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

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