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統合失調症の二重衝撃仮説(Two hit hypothesis)の証明

Research Project

Project/Area Number 18659333
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Psychiatric science
Research InstitutionOsaka University

Principal Investigator

松崎 秀夫  Osaka University, 医学系研究科, 特任准教授(常勤) (00334970)

Co-Investigator(Kenkyū-buntansha) 中村 和彦  浜松医科大学, 医学部附属病院, 講師 (80263911)
土屋 賢治  浜松医科大学, 医学部, 助教 (20362189)
杉原 玄一  浜松医科大学, 医学部, 助教 (70402261)
岩田 泰秀  浜松医科大学, 医学部, 助教 (10285025)
関根 吉統  浜松医科大学, 医学部, 助手 (70324358)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2007: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2006: ¥1,700,000 (Direct Cost: ¥1,700,000)
Keywords統合失調症 / 二重衝撃仮説 / GAD67
Research Abstract

本課題は,統合失調症の「二重衝撃仮説(Two hit hypothesis)」の証明を目的とする。これは遺伝因としての「First hit(第一衝撃)」が統合失調症の脆弱性を形成し,ついで環境因としての「Second hit(第二衝撃)」が加わって統合失調症が発症する,とする仮説である。
昨年度まで、我々は子宮内胎児仮死経験ラットに認められる(1)メタンフェタミン投与後の移所行動量亢進,(2)海馬のBrdU陽性細胞数減少,(3)海馬の顆粒細胞数減少、の知見を得て、第34回日本脳科学会での発表を行った(現在投稿準備中)。この成果から,GAD67ノックアウトマウス(GAD67(+/-))に第二衝撃としての子宮内胎児仮死を経験させる実験を試みたが,子宮内仮死を経験することによってマウスがほとんど死んでしまったため,子宮内仮死について実験条件を再び検討した。その結果,現在のプロトコールをマウスに適用してモデルを作成することは困難との結論に至り,プロトコールを改善しても再現性のある実験結果が得られなかったため,本研究補助を受ける年度内に子宮内胎児仮死経験マウスを作ることを事実上断念した。
GAD67遺伝子改変マウスの再解析では,行動量の日内変動,ドパミン作動薬(メタンフェタミン)による移所行動量,PPI,社会的行動(Social Interaction)に有意な変化が認められなかった。さらに現在所有する動物実験設備下ではGAD67遺伝子改変マウスの交配・出生の効率が悪いこともあり,今後の行動実験に十分なマウスの提供ができない見通しも判明した。
以上の理由により,本研究計画を本年度内限りで中止することを決定した。

Report

(2 results)
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (23 results)

All 2008 2007 2006

All Journal Article (16 results) (of which Peer Reviewed: 6 results) Presentation (7 results)

  • [Journal Article] Decreased expression of reelin receptor VLDLR in peripheral lymphocytes of drug-naive schizophrenic patients.2008

    • Author(s)
      Suzuki K, Nakamura K, Iwata Y, Sekine Y, Kawai M, Sugihara G, Tsuchiya KJ, Suda S, Matsuzaki H, Takei N, Hashimoto K, Mori N.
    • Journal Title

      Schizophrenia Research 98(1-3)

      Pages: 148-56

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gene and expression analyses reveal enhanced expression of pericentrin 2 (PCNT2) in bipolar disorder.2008

    • Author(s)
      Anitha A, Nakamura K, Yamada K, Iwayama Y, Toyota T, Takei N, Iwata Y, Suzuki K, Sekine Y, Matsuzaki H, Kawai M, Miyoshi K, Katayama T, Matsuzaki S, Baba K, Honda A, Hattori T, Shimizu S, Kumamoto N, Tohyama M, Yoshikawa T, Mori N.
    • Journal Title

      Biological Psychiatry (In press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genetic analyses of Roundabout (ROBO) axon guidance receptors in autism.2008

    • Author(s)
      Anitha A, Nakamura K, Yamada K, Suda S, Thanseem I, Tsujii M, Iwayama Y, Hattori E, Toyota T, Miyachi T, Iwata Y, Suzuki K, Matsuzaki H, Kawai M, Sekine Y, Tsuchiya K, Sugihara GI, Ouchi Y, Sugiyama T, Koizumi K, Higashida H, Takei N, Yoshikawa T, Mori N.
    • Journal Title

      American Journal of Medical Genetics Part B: Neuropsychiatric Genetics (In press)

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genetic analyses of the brain-derivedneurotrophic factor (BDNF) gene in autism.2007

    • Author(s)
      Nishimura K, Nakamura K, Anitha A, Yamada K, Tsujii M, Iwayama Y, Hattori E, Toyota T, Takei N, Miyachi T, Iwata Y, Suzuki K, Matsuzaki H, Kawai M, Sekine Y, Tsuchiya K, Sugihara G, Suda S, Ouchi Y, Sugiyama T, Yoshikawa T, Mori N.
    • Journal Title

      Biochemical and Biophysical Research Communication 356(1)

      Pages: 200-6

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 統合失調症と神経幹細胞2007

    • Author(s)
      松崎秀夫, 岩田泰秀, 鈴木勝昭, 森則夫
    • Journal Title

      分子精神医学 7(2)

      Pages: 21-26

    • Related Report
      2007 Annual Research Report
  • [Journal Article] Disruption of Reelin signaling attenuates methamphetamine-induced hyperlocomotion.2007

    • Author(s)
      Matsuzaki H, Minabe Y, Nakamura K, Suzuki K, Iwata Y, Sekine Y, Tsuchiya KJ, Sugihara G, Suda S, Takei N, Nakahara D, Hashimoto K, Nairn AC, Mori N, Sato K.
    • Journal Title

      European Journal of Neuroscience 25(11)

      Pages: 3376-84

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] SNP analyses of growth factor genes EGF, TGF-β1, and HGF revealhaplotypic association of EGF with autism.2007

    • Author(s)
      Toyoda T, Nakamura K, Yamada K, Thanseem I, Anitha A, Suda S, Tsujii M, Iwayama Y, Hattori E, Toyota T, Miyachi T, Iwata Y, Suzuki K, Matsuzaki H, Kawai M, Sekine Y, Tsuchiya K, Sugihara GI, Ouchi Y, Sugiyama T, Takei N, Yoshikawa T, Mori N.
    • Journal Title

      Biochemical and Biophysical Research Communication 360(4)

      Pages: 715-20

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Decreased serum levels of transforming growth factor-beta1 in patients with autism.2007

    • Author(s)
      Okada K, Hashimoto K, Iwata Y, Nakamura K, Tsujii M, Tsuchiya KJ, Sekine Y, Suda S, Suzuki K, Sugihara G, Matsuzaki H, Sugiyama T, Kawai M, Minabe Y, Takei N, Mori N
    • Journal Title

      Progress in Neuro-Psychopharmacology and Biological Psychiatry 31(1)

      Pages: 187-190

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Increased levels of serum soluble L-selectin in unmedicated patients with schizophrenia.2007

    • Author(s)
      Iwata Y, Suzuki K, Nakamura K, Matsuzaki H, Sekine Y, Tsuchiya KJ, Sugihara G, Kawai M, Minabe Y, Takei N, Mori N
    • Journal Title

      Schizophrenia Research 89(1-3)

      Pages: 154-160

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Linkage disequilibrium analysis of the CHRNA7 gene and its partially duplicated region in schizophrenia.2007

    • Author(s)
      Iwata Y, Nakajima M, Yamada K, Nakamura K, Sekine Y, Tsuchiya KJ, Sugihara G, Matsuzaki H, Suda S, Suzuki K, Takei N, Mori N, Iwayama Y, Takao H, Yoshikawa T, Riley B, Makoff A, Sham P, Chen R, Collier D
    • Journal Title

      Neuroscience Research 57(2)

      Pages: 194-202

    • NAID

      10021188681

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Decreased serum levels of hepatocyte growth factor in male adults with high-functioning autism.2007

    • Author(s)
      Sugihara G, Hashimoto K, Iwata Y, Nakamura K, Tsujii M, Tsuchiya KJ, Sekine Y, Suzuki K, Suda S, Matsuzaki H, Kawai M, Minabe Y, Yagi A, Takei N, Sugiyama T, Mori N
    • Journal Title

      Progress in Neuro-Psychopharmacology and Biological Psychiatry 31(2)

      Pages: 412-415

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Decreased serum levels of epidermal growth factor in adult Subjects with high-functioning autism.2007

    • Author(s)
      Suzuki K, Hashimoto K, Iwata Y, Nakamura K, Tsujii M, Tsuchiya KJ, Sekine Y, Suda S, Sugihara G, Matsuzaki H, Sugiyama T, Kawai M, Minabe Y, Takei N, Mori N
    • Journal Title

      Biological Psychiatry (in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Decreased serum levels of PECAM-1 in subjects with high-functioning autism : a negative correlation with head circumference at birth.2007

    • Author(s)
      Tsuchiya KJ, Hashimoto K, Iwata Y, Tujii M, Sekine Y, Sugihara G, Matsuzaki H, Suda S, Kawai M, Nakamura K, Minabe Y, Yagi A, Iyo M, Takei N, Mori N
    • Journal Title

      Biological Psychiatry (in press)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] An association study between COMT gene polymorphism and methamphetamine psychotic disorder.2006

    • Author(s)
      Suzuki A, Nakamura K, Sekine Y, Minabe Y, Takei N, Suzuki K., Iwata Y, Kawai M, Takebayashi K, Matsuzaki H, Iyo M, Ozaki N, Inada T, Iwata N, Harano M, Komiyama T, Yamada M, Sora I, Ujike H, Mori N
    • Journal Title

      Psychiatric Genetics 16(4)

      Pages: 133-138

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Increased serum levels of glutamate in adult patients with autism.2006

    • Author(s)
      Shinohe A, Hashimoto K, Nakamura K, Tsujii M, Iwata Y, Tsuchiya KJ, Sekine Y, Suda S, Suzuki K, Sugihara G, Matsuzaki H, Minabe Y, Sugiyama T, Kawai M, Iyo M, Takei N, Mori N
    • Journal Title

      Progress in Neuro-Psychopharmacology and Biological Psychiatry 30(8)

      Pages: 1472-1477

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Gaze recognition in high-functioning autistic patients : evidence from functional MRI.2006

    • Author(s)
      Takebayashi H, Matsumoto H., Ogai M., Sekine Y., Suzuki K., Matsuzaki H, Suckling J., Ozawa F., Fukuda R., Uchiyama I., Nakamura K., Minabe Y., Isoda H., Mori N., Takei N.
    • Journal Title

      Chiba Medical Journal 82

      Pages: 139-147

    • NAID

      10018584272

    • Related Report
      2006 Annual Research Report
  • [Presentation] Neurogenesis correlates sensorimotor gating via activation of hippocampal Akt2007

    • Author(s)
      Matsuzaki H, Wakuda T, Iwata Y, Seki N, Suzuki K, Suda S, Takei N, Tohyama M, Mori N
    • Organizer
      The 37th annual meeting Society for Neuroscience
    • Place of Presentation
      San Diego, CA, USA
    • Year and Date
      2007-11-06
    • Related Report
      2007 Annual Research Report
  • [Presentation] 神経新生は海馬AKTの活性化を介して感覚運動系制御に関与している2007

    • Author(s)
      松崎秀夫, 和久田智靖, 関規寛, 岩田泰秀, 鈴木勝昭, 武井教使, 遠山正彌, 森則夫
    • Organizer
      第50回日本神経化学会
    • Place of Presentation
      神奈川県横浜市
    • Year and Date
      2007-09-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] 成人高機能自閉症患者血清における成長因子の動態2007

    • Author(s)
      松崎秀夫, 岩田泰秀, 土屋賢治, 杉原玄一, 須田史朗, 鈴木勝昭, 中村和彦, 武井教使, 橋本謙二, 森則夫
    • Organizer
      第29回日本生物学的精神医学会
    • Place of Presentation
      北海道札幌市
    • Year and Date
      2007-07-12
    • Related Report
      2007 Annual Research Report
  • [Presentation] 脳内神経再生の修飾による統合失調症の新しい治療法開発の試み2007

    • Author(s)
      和久田智靖, 松崎秀夫, 岩田泰秀, 関規寛, 鈴木勝昭, 武井教使, 遠山正彌, 森則夫
    • Organizer
      第29回日本生物学的精神医学会
    • Place of Presentation
      北海道札幌市
    • Year and Date
      2007-07-11
    • Related Report
      2007 Annual Research Report
  • [Presentation] 脳内神経再生の修飾による統合失調症の新しい治療法開発の試み2007

    • Author(s)
      松崎秀夫, 和久田智靖, 土手基慶, 岩田泰秀, 鈴木勝昭, 遠山正彌, 森則夫
    • Organizer
      第34回日本脳科学会
    • Place of Presentation
      島根県出雲市
    • Year and Date
      2007-06-08
    • Related Report
      2007 Annual Research Report
  • [Presentation] 統合失調症病態モデルとしての子宮内仮死経験ラットの検討2007

    • Author(s)
      和久田智靖, 松崎秀夫, 土手基慶, 岩田泰秀, 鈴木勝昭, 遠山正彌, 森則夫
    • Organizer
      第34回日本脳科学会
    • Place of Presentation
      島根県出雲市
    • Year and Date
      2007-06-08
    • Related Report
      2007 Annual Research Report
  • [Presentation] 成人自閉症患者における血清グルタミン酸濃度の上昇2007

    • Author(s)
      四戸敦子, 橋本謙二, 中村和彦, 辻井正次, 岩田泰秀, 松崎秀夫, 杉山登志郎, 伊豫雅臣, 武井教使, 森則夫
    • Organizer
      第34回日本脳科学会
    • Place of Presentation
      島根県出雲市
    • Year and Date
      2007-06-08
    • Related Report
      2007 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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