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Investigation of the pathomechanism of myotonic syndromes-Na channel disorders of skeletal muscle and myotonic dystrophy

Research Project

Project/Area Number 20590998
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Neurology
Research InstitutionOsaka University

Principal Investigator

TAKAHASHI Masanori  Osaka University, 医学系研究科, 助教 (20359847)

Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywords筋疾患 / ナトリウムチャネル / イオンチャネル / 骨格筋 / シミュレーション / パッチクランプ / mRNA / スプライシング / スプライジング / チャネル病
Research Abstract

Pathomechanism of myotonic syndromes (Na channel disorders of skeletal muscle and myotonic dystrophy) were investigated. Regarding the Na channel disorders of skeletal muscle, the channel function of novel mutations identified in Japanese patients were electrophysiologically analyzed and computer simulation were performed to elucidate pathophysiological mechanism. It should be noted that we identified a first case of non-dystrophic myotonia caused by a mutation in intron and revealed its molecular mechanism. Regarding myotonic dystrophy which is recently hypothesized as "mRNA disease", missplicing of an ion channel mRNA which might be linked to arrhythmia was identified in cardiac muscle.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (27 results)

All 2011 2010 2009 2008 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (19 results) Book (1 results) Remarks (1 results)

  • [Journal Article] The role of dystrobrevin in striated muscle.2011

    • Author(s)
      Nakamori M, Takahashi MP.
    • Journal Title

      Int. J.Molecular Sciences 12(3)

      Pages: 1660-1671

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] A mutation in a rare type of intron in a sodium-channel gene results in aberrant splicing and causes myotonia2011

    • Author(s)
      Kubota T, Roca X, Kimura T, …………, Sakoda S, Takahashi MP
    • Journal Title

      Human Mutation

      Volume: 41,(印刷中)

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The role of dystrobrevin in striated muscle.2011

    • Author(s)
      Nakamori M, Takahashi MP
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 12 Pages: 1660-1671

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] New mutation of the Na channel in severe form of potassium-aggravated myotonia.2009

    • Author(s)
      Kubota T, Kinoshita M, Sasaki R, Aoike F, Takahashi MP, Sakoda S, Hirose K.
    • Journal Title

      Muscle Nerve 39(5)

      Pages: 666-73

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] New mutation of the Na channel in severe form of potassium-aggravated myotonia.2009

    • Author(s)
      Kubota T., et al
    • Journal Title

      Muscle & Nerve (in press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A mutation in a rare type of intron in a sodium-channel gene results in aberrant splicing and causes myotonia.

    • Author(s)
      Kubota T, Roca X, Kimura T, Kokunai Y, Nishino I, Sakoda S, Krainer AR, Takahashi MP.
    • Journal Title

      Human Mutation in press

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Presentation] A myotonia caused byaberrant splicing ofvoltage-gated sodium channel due to an intronic mutation ofSCN4A.2010

    • Author(s)
      Takahashi MP, Kubota T, Kokunai Y, Kimura T, Sakoda S.
    • Organizer
      15th International Congress of the World Muscle Society
    • Place of Presentation
      Kumamoto Japan
    • Year and Date
      2010-10-13
    • Related Report
      2010 Final Research Report
  • [Presentation] A myotonia caused by aberrant splicing of voltage-gated sodium channel due to an intronic mutation of SCN4A2010

    • Author(s)
      Takahashi MP, ほか
    • Organizer
      The 15th International Congress of the World Muscle Society
    • Place of Presentation
      熊本市
    • Year and Date
      2010-10-13
    • Related Report
      2010 Annual Research Report
  • [Presentation] 骨格筋型電位依存性Naチャネル(NaV1.4)のスプライシング異常によるミオトニー2010

    • Author(s)
      久保田智哉, 高橋正紀, 木村卓, 穀内洋介, 佐古田三郎
    • Organizer
      第51回日本神経学会総会
    • Place of Presentation
      東京
    • Year and Date
      2010-05-21
    • Related Report
      2010 Final Research Report
  • [Presentation] An intronic mutation of SCN4A-associatedwithmyotonia raises an aberrantly spliced isoform with disrupted fast inactivation.2010

    • Author(s)
      久保田智哉, 高橋正紀, 木村卓, 佐古田三郎
    • Organizer
      Biophysical Society 54th Annual Meeting
    • Place of Presentation
      San Francisco CA USA
    • Year and Date
      2010-02-22
    • Related Report
      2010 Final Research Report
  • [Presentation] An intronic mutation of SCN4A associated with myotonia raises an aberrantly spliced isoform with disrupted fast inactivation2010

    • Author(s)
      久保田智哉, ほか
    • Organizer
      2010 Biophysical Society 54th Annual Meeting
    • Place of Presentation
      サンフランシスコ 米国
    • Year and Date
      2010-02-22
    • Related Report
      2009 Annual Research Report
  • [Presentation] イオンチャネル遺伝子異常による骨格筋疾患-周期性四肢麻痺・ミオトニー症候群の診断と病態生理シンポジウム遺伝子異常と臨床神経生理2009

    • Author(s)
      高橋正紀
    • Organizer
      第39回日本臨床神経生理学会学術大会
    • Place of Presentation
      北九州
    • Year and Date
      2009-11-20
    • Related Report
      2010 Final Research Report
  • [Presentation] Myotonic discharge発生におけるT管の役割;コンピューターシミュレーションによる検討2009

    • Author(s)
      久保田智哉、高橋正紀、佐古田三郎
    • Organizer
      第39回日本臨床神経生理学会学術大会
    • Place of Presentation
      北九州
    • Year and Date
      2009-11-20
    • Related Report
      2010 Final Research Report
  • [Presentation] イオンチャネル遺伝子異常による骨格筋疾患-周期性四肢麻痺・ミオトニー症候群の診断と病態生理(シンポジウム 遺伝子異常と臨床神経生理)2009

    • Author(s)
      高橋正紀
    • Organizer
      第39回日本臨床神経生理学会学術大会
    • Place of Presentation
      北九州国際会議場(福岡県)
    • Year and Date
      2009-11-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] Myotonic discharge発生におけるT管の役割;コンピューターシミュレーションによる検討2009

    • Author(s)
      久保田智哉、高橋正紀、佐古田三郎
    • Organizer
      第39回日本臨床神経生理学会学術大会
    • Place of Presentation
      北九州国際会議場(福岡県)
    • Year and Date
      2009-11-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] コンピューターシミュレーションによる筋細胞膜興奮性の検討2009

    • Author(s)
      久保田智哉、高橋正紀、佐古田三郎
    • Organizer
      第50回日本神経学会総会
    • Place of Presentation
      仙台
    • Year and Date
      2009-05-20
    • Related Report
      2010 Final Research Report
  • [Presentation] 筋強直性ジストロフィーモデルマウスにおけるSKチャネル発現とスプライシングの検討2009

    • Author(s)
      穀内洋介、久保田智哉、中森雅之、木村卓、高橋正紀、佐古田三郎
    • Organizer
      第50回日本神経学会総会
    • Place of Presentation
      仙台
    • Year and Date
      2009-05-20
    • Related Report
      2010 Final Research Report
  • [Presentation] コンピューターシミュレーションによる筋細胞膜興奮性の検討2009

    • Author(s)
      久保田智哉、高橋正紀、佐古田三郎
    • Organizer
      第50回日本神経学会総会
    • Place of Presentation
      仙台国際センター(宮城県)
    • Year and Date
      2009-05-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] 筋強直性ジストロフィーモデルマウスにおけるSKチャネル発現とスプライシングの検討2009

    • Author(s)
      穀内洋介, ほか
    • Organizer
      第50回日本神経学会総会
    • Place of Presentation
      仙台国際センター(宮城県)
    • Year and Date
      2009-05-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] ミオトニアを呈する変異NaV1.4チャネル機能異常と臨床症状-コンピューターシュミレーションによる検討2008

    • Author(s)
      久保田智哉、高橋正紀、迫田俊一、木下正信、佐古田三郎
    • Organizer
      第38回日本臨床神経生理学会学術大会
    • Place of Presentation
      神戸
    • Year and Date
      2008-11-13
    • Related Report
      2010 Final Research Report 2008 Annual Research Report
  • [Presentation] 筋強直性ジストロフィー症におけるα-dystrobrevinスプライシング異常2008

    • Author(s)
      高橋正紀, 中森雅之, 木村卓, 久保田智哉, 松村剛, 隅寿恵, 藤村晴俊, 佐古田三郎
    • Organizer
      第49回日本神経学会総会
    • Place of Presentation
      横浜
    • Year and Date
      2008-05-16
    • Related Report
      2010 Final Research Report 2008 Annual Research Report
  • [Presentation] 筋強直性ジストロフィー脳におけるスプライシング異常の検討2008

    • Author(s)
      木村卓, ほか
    • Organizer
      第49回日本神経学会総会
    • Place of Presentation
      横浜
    • Year and Date
      2008-05-16
    • Related Report
      2008 Annual Research Report
  • [Presentation] Schwartz-Jampel症候群と考えられていたmyotonia permanensについて;新規NaV1.4変異チャネルP1158Lの機能解析2008

    • Author(s)
      久保田智哉、迫田俊一、平澤恵理、杉江和馬、高橋正紀、樋口逸郎、有村由美子、有村公良、佐古田三郎
    • Organizer
      第49回日本神経学会総会
    • Place of Presentation
      横浜
    • Year and Date
      2008-05-15
    • Related Report
      2010 Final Research Report
  • [Presentation] Schwartz-Jampel症候群と考えられていたmyotonia permanensについて ; 新規NaV1.4変異チャネルP1158Lの機能解析2008

    • Author(s)
      久保田智哉, ほか
    • Organizer
      第49回日本神経学会総会
    • Place of Presentation
      横浜
    • Year and Date
      2008-05-15
    • Related Report
      2008 Annual Research Report
  • [Presentation] A New Mutation of Na channel in potassium-aggravated myotonia with cyanotic attacks.2008

    • Author(s)
      Kubota T, Kinoshita M, Sasaki R, Takahashi MP, Sakoda S, Hirose K
    • Organizer
      The 60th Annual Meeting of the American Academy of Neurology.
    • Place of Presentation
      Chicago, IL USA
    • Year and Date
      2008-04-17
    • Related Report
      2010 Final Research Report
  • [Book] 筋強直性ジストロフィー神経疾患・診療ガイドライン-最新の診療指針(鈴木則宏編)2009

    • Author(s)
      久保田智哉、高橋正紀、佐古田三郎
    • Publisher
      総合医学社
    • Related Report
      2010 Final Research Report
  • [Remarks] ホームページ等

    • URL

      http://www.med.osaka-u.ac.jp/pub/neurol/myweb6/Channel.html

    • Related Report
      2010 Final Research Report

URL: 

Published: 2008-04-01   Modified: 2016-04-21  

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