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Identification of genes that influence methamphetamine toxicity and application to cause of death investigation

Research Project

Project/Area Number 19K10698
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 58040:Forensics medicine-related
Research InstitutionFukuoka University

Principal Investigator

Matsusue Aya  福岡大学, 医学部, 講師 (70309920)

Co-Investigator(Kenkyū-buntansha) 久保 真一  福岡大学, 医学部, 教授 (10205122)
石川 隆紀  大阪公立大学, 大学院医学研究科, 教授 (50381984)
原 健二  福岡大学, 医学部, 講師 (00090738)
柏木 正之  福岡大学, 医学部, 准教授 (70301687)
ウォーターズ ブライアン  福岡大学, 医学部, 講師 (00609480)
高山 みお  福岡大学, 医学部, 講師 (40804802)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords覚醒剤 / 遺伝子多型 / 剖検例 / 遺伝子発現 / 覚醒剤中毒 / 遺伝子解析
Outline of Research at the Start

覚醒剤の血中濃度が致死濃度に達していないにもかかわらず、他に明確な死因がない場合、死因の判定に苦慮する症例は多い。本研究では、特定の遺伝子の変異・多型あるいは発現量の変化が、覚醒剤の毒性に重要に関与していることを証明し、死因との因果関係を考察する。従来の中毒学的検査等に新たに遺伝学的検査を加えることで、覚醒剤中毒死の死因究明への応用を試みる。

Outline of Final Research Achievements

Genes that may affect methamphetamine toxicity were examined in forensic autopsy cases. In men where methamphetamine was detected, no significant association was found between the VNTR polymorphism of the monoamine oxidase A gene and the levels of adrenaline, noradrenaline, and dopamine in the cerebrospinal fluid. We investigated the association between CYP2D6 gene polymorphism and body fluid methamphetamine concentration, amphetamine concentration, and metabolic ratio. Ultrarapid metabolizer, extensive metabolizer, intermediate metabolizer, and poor metabolizer phenotypes were predicted from CYP2D6 genotypes. The intermediate metabolizer showed an overall higher methamphetamine concentration than the extensive metabolizer. In particular, significant differences were observed in urine and bone marrow. Amphetamine concentrations and metabolic ratios were not significantly different in any body fluid.

Academic Significance and Societal Importance of the Research Achievements

CYP2D6の遺伝子多型が、覚醒剤検出症例の体液中メタンフェタミン濃度に影響を与える可能性が示唆された。日本人では、CYP2D6の代謝能低下型の頻度が高い。代謝能低下型の場合、覚醒剤の体内濃度が正常型に比べて高くなり、覚醒剤の毒性も強く発現する可能性がある。
申請者は、以前、覚醒剤摂取時の脳脊髄液中ドパミン濃度が、COMT遺伝子多型によって有意に上昇することを明らかにした。COMTと同様にカテコラミンの代謝に関わるMAOA遺伝子のVNTR多型を調べたが、男性における関連は認められなかった。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (6 results)

All 2022 2021 2020 2019

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results) Book (1 results)

  • [Journal Article] Associations between variable number tandem repeat polymorphism in the monoamine oxidase A with cerebrospinal fluid levels in drug positive cases.2022

    • Author(s)
      Matsusue A, Ishikawa T, Ikeda T, Tani N, Maeda T, Kashiwagi M, Hara K, Waters B, Takayama M, Kubo SI
    • Journal Title

      Albanian Journal of Medical and Health Sciences

      Volume: 58 Pages: 1-11

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] VNTR polymorphism in the monoamine oxidase A promoter region and cerebrospinal fluid catecholamine concentrations in forensic autopsy cases2019

    • Author(s)
      Matsusue A, Kubo SI, Ikeda T, Tani N, Maeda T, Kashiwagi M, Hara K, Waters B, Takayama M, Ikematsu N, Ishikawa T
    • Journal Title

      Neuroscience Letter

      Volume: 701 Pages: 71-76

    • DOI

      10.1016/j.neulet.2019.02.029

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 法医剖検例における血中アドレナリン並びにノルアドレナリン濃度とMAOA遺伝子多型の関連2022

    • Author(s)
      松末 綾,石川 隆紀,池田 知哉,谷 直人,Brian Waters,原 健二,髙山 みお,柏木 正之,久保 真一
    • Organizer
      第106次日本法医学会学術全国集会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 法医剖検例における薬物検出例の脳脊髄液中カテコラミン濃度とMAOA-uVNTR多型の関連.2021

    • Author(s)
      松末 綾,石川 隆紀,池田 知哉,谷 直人,Brian Waters,原 健二,髙山 みお,柏木 正之,久保 真一
    • Organizer
      第105次日本法医学会学術全国集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 法医剖検例における脳脊髄液中カテコラミン濃度およびMAOA遺伝子プロモーター領域のVNTR多型の関連.2020

    • Author(s)
      松末 綾,石川 隆紀,池田 知哉,谷 直人,Brian Waters,原 健二,髙山 みお,柏木 正之,久保 真一
    • Organizer
      第104次日本法医学会学術全国集会
    • Related Report
      2020 Research-status Report
  • [Book] Forensic Medicine and Human Cell Research2019

    • Author(s)
      Matsusue Aya and Kubo Shin-ichi
    • Total Pages
      17
    • Publisher
      Springer
    • ISBN
      9789811322969
    • Related Report
      2019 Research-status Report

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

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