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Evaluation method for DNA damage and dysfunction of spermatogenic cells due to Bromopropanes

Research Project

Project/Area Number 14370124
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Hygiene
Research InstitutionYamaguchi University

Principal Investigator

OKUDA Masayuki  Yamaguchi University, School of medicine, Associate Professor, 医学部, 助教授 (50274171)

Co-Investigator(Kenkyū-buntansha) HOBARA Tatsuya  Yamaguchi University, School of medicine, Professor, 医学部, 教授 (10116501)
KUNITSUGU Ichiro  Yamaguchi University, School of medicine, Research Associate, 医学部, 助手 (80314798)
SUGIYAMA Shinichi  Yamaguchi University, School of medicine, Research Associate, 医学部, 助手 (50335725)
Project Period (FY) 2002 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥8,000,000 (Direct Cost: ¥8,000,000)
Fiscal Year 2004: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2003: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2002: ¥5,700,000 (Direct Cost: ¥5,700,000)
Keywordscomet assay / single cell gel electrophoresis / DNA / apoptosis / bromopropane / trichloroethylene / toxicology / 8-OHdG / ラット / 精巣 / DNA損傷 / 有機溶剤 / single gel electrophoresis / 精原細胞 / 温度 / Syber Green
Research Abstract

Comet assay (single cell gel electrophoresis) is a simple method for evaluation of DNA toxicity. DNA of rat spermatogenic cells (spermatogonia and spermatocytes) are damaged with bromopropanes in dose- and time-dependent manner. Among some kinds of bromopropanes, 1,3-bromopropane has most toxicity and 2-bromopropane and 1-boromopropane follow. Trichloroethylene, which is used as the same purposes in industry, reduces the toxicity due to 1,3-bromopropane when trichloroethylene with bromopropane is exposed at the same time to primary-cultured spermatogenic cells. But this mechanism for toxicity reduction should be further investigated. When comet assay is carried in more neutral condition than usual alkaline condition, DNA damage is not detected. DNA fragmentation due to apoptosis may not be induced with bromopropane in the condition used in this study (primary culture, Wistar rats) since rat testes DNA does not show ladder in electrophoresis. Oxidative stress markers for DNA, 8-OHdG (hydroxy-deoxy-guanosine), are elevated in DNA from testes tissue or primary-cultured spermatogenic cells. This study shows that comet assay can be used as screening method foe toxicity to testes and may differentiate DNA damage from apoptosis in some specific conditions.

Report

(4 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • 2002 Annual Research Report
  • Research Products

    (13 results)

All 2004 Other

All Journal Article (9 results) Publications (4 results)

  • [Journal Article] DNA damage of rat spermatogenic cells by 2-bromopropane. Toxicology and applied Pharmacology2004

    • Author(s)
      Masayuki Okuda
    • Journal Title

      Toxicology and applied Pharmacology 197

      Pages: 353-353

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] The inhibition of the smooth muscle contraction in rats aorta by trichloroethylene2004

    • Author(s)
      Ichiro Kunitsugu
    • Journal Title

      Toxicology and applied Pharmacology 197

      Pages: 364-364

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Application of comet assay using primary spermatogenic cells to 1,3-dibromopropane, trichloroethylene and mixed solutions toxicity2004

    • Author(s)
      Shinichi Sugiyama
    • Journal Title

      Toxicology and applied Pharmacology 197

      Pages: 364-364

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] Altered tissue concentration of minerals in spontaneous diabetic rats (Goto Gakizaki rats).2004

    • Author(s)
      Satoru TAKITA
    • Journal Title

      The Journal of Toxicological Science 29

      Pages: 195-199

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Altered tissue concentration of minerals in spontaneous diabetic rats (Goto-Gakizaki rats).2004

    • Author(s)
      Satoru TAKITA
    • Journal Title

      The Journal of Toxicological Science 29

      Pages: 195-199

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] DNA damage of rat spermatogenic cells by 2-bromopropane2004

    • Author(s)
      Masayuki Okuda
    • Journal Title

      Toxicology and applied Pharmacology 197

      Pages: 353-353

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Altered tissue concentration of minerals in spontaneous diabetic rats (Goto-Gakizaki rats)2004

    • Author(s)
      Satoru Takaita
    • Journal Title

      The Journal of Toxicological Science 29

      Pages: 195-199

    • Related Report
      2004 Annual Research Report
  • [Journal Article] トリクロロエチレンによる血管平滑筋収縮の抑制作用2004

    • Author(s)
      國次一郎
    • Journal Title

      産業衛生学雑誌 46

      Pages: 289-289

    • Related Report
      2004 Annual Research Report
  • [Journal Article] コメットアッセイ法を用いた1.3-ジブロモプロパン、トリクロロエチレンとその混合溶液の情原細胞に対する毒性評価2004

    • Author(s)
      杉山真一
    • Journal Title

      産業衛生学雑誌 46

      Pages: 391-391

    • Related Report
      2004 Annual Research Report
  • [Publications] 杉山真一: "有機溶剤検診において、尿中馬尿酸の高地を示した症例に関する報告"産業衛生学雑誌. 45. 644 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 奥田昌之: "市町村における健康増進事業の現状"産業衛生学雑誌. 45. 158 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 奥田昌之, 國次一郎, 小早川節, 杉山真一, 芳原達也: "初代培養精原細胞コメットアッセイを用いた2-ブロモプロパンの毒性評価"産業衛生学雑誌. 44・増刊. 792 (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] 國次一郎, 奥田昌之, 若本ゆかり, 杉山真一, 小早川節, 芳原達也: "初代培養精原細胞におけるComet Assayを用いたn-Hexaneの毒性評価"産業衛生学雑誌. 44・増刊. 791 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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