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2012 Fiscal Year Annual Research Report

新規モデル動物(キックイン)を用いててんかんの発症阻止に挑む

Research Project

Project/Area Number 23659529
Research InstitutionFukuoka University

Principal Investigator

廣瀬 伸一  福岡大学, 医学部, 教授 (60248515)

Keywordsモデル動物 / フロセミド / てんかん
Research Abstract

ヒトDravet症候群の多くは、ニューロンNaチャネルα1サブユニット遺伝子(SCN1A)のヘテロのナンセンス変異やミスセンスなど点変異により引き起こされる。一部の患者ではSCN1A遺伝子の微小欠失が原因となり、その場合一般的にDravet症候群の最重症型をとる。今回、我々は、本研究にこの最重度のDravet症候群の表現型を有するマウスを作出して、NKCC1(Na+, K+-2Cl- cotransporter)阻害剤のけいれん発症の抑制効果をみることとした。このため、C57BL/6バックグラウンドのマウスに我々が独自に開発してキックイン法の一部を利用し、SCN1Aの欠失を持つマウスを作出した。本マウスを、24時間ビデオ脳波計を用いて観察したところ、離乳後の4週齢から8週齢の間に激しいけいれんと脳皮質波でてんかん性の放電が観察された(論文準備中)さらにスライスパッチクランプ法を用いて、イオンチャネル電気生理学上での変化を観察中である。またニューロンの初代培養を用いて、単離ニューロンレベルでのシナプス可塑性の異常を同定している。現在このマウスを利用して、NKCC1(Na+, K+-2Cl- cotransporter)阻害剤=ループ利尿剤(フロセミド、ブメタニド、トラセミド、エタクリン酸)の効果を24時間ビデオ脳波計を用い、一度に8頭ずつ観察中である。

  • Research Products

    (11 results)

All 2013 2012 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (5 results) (of which Invited: 2 results) Book (1 results)

  • [Journal Article] Properties of a novel GABAA receptor gamma2 subunit mutation associated with seizures.2013

    • Author(s)
      Migita K, Yamada J, Nikaido Y, Shi X, Kaneko S, Hirose S, Ueno S.
    • Journal Title

      J Pharmacol Sci.

      Volume: 121(1) Pages: 84-7

    • DOI

      doi:10.121254-jphs.12222sc

    • Peer Reviewed
  • [Journal Article] Identification of ATP1A3 Mutations by Exome Sequencing as the Cause of Alternating Hemiplegia of Childhood in Japanese Patients.2013

    • Author(s)
      Ishii A, Saito Y, Mitsui J, Ishiura H, Yoshimura J, Arai H, Yamashita S, Kimura S, Oguni H, Morishita S, Tsuji S, Sasaki M, Hirose S.
    • Journal Title

      Plos one

      Volume: 8(2) Pages: e56120

    • DOI

      10.1371/journal.pone.0056120

    • Peer Reviewed
  • [Journal Article] A boy with a severe phenotype of succinic semialdehyde dehydrogenase deficiency.2012

    • Author(s)
      Yamakawa Y, Nakazawa T, Ishida A, Saito N, Komatsu M, Matsubara T, Obinata K, Hirose S, Okumura A, Shimizu T.
    • Journal Title

      Brain Dev

      Volume: 34(2) Pages: 107-12

    • DOI

      doi:10.1016/j.braindev.2011.05.003

    • Peer Reviewed
  • [Journal Article] Prevalence of SCN1A mutations in children with suspected Dravet syndrome and intractable childhood epilepsy.2012

    • Author(s)
      Wang JW, Shi XY, Kurahashi H, Hwang SK, Ishii A, Higurashi N, Kaneko S, Hirose S,Epilepsy Genetic Study Group J.
    • Journal Title

      Epilepsy Res.

      Volume: 102(3) Pages: 195-200

    • DOI

      doi:10.1016/j.eplepsyres.2012.06.006.

    • Peer Reviewed
  • [Journal Article] Clinical spectrum of SCN2A mutations.2012

    • Author(s)
      Shi X, Yasumoto S, Kurahashi H, Nakagawa E, Fukasawa T, Uchiya S, Hirose S.
    • Journal Title

      Brain Dev.

      Volume: 34(7) Pages: 541-5

    • DOI

      doi:10.1016/j.braindev.

    • Peer Reviewed
  • [Presentation] Identification of ATP1A3 mutations by exome sequencing as the cause of AHC in japanese patients2012

    • Author(s)
      Ishii A, Hirose S.
    • Organizer
      Symposium ATP1A3 in disease from gene mutations to new treatments
    • Place of Presentation
      Brussels, Belglum
    • Year and Date
      20121210-20121211
    • Invited
  • [Presentation] Genetics of benign neonatal seizures2012

    • Author(s)
      Hirose S.
    • Organizer
      12th international Child Neurology Congress/ 11th Asian and Oceanian congress of Child Neurology
    • Place of Presentation
      Brisbane, Australia
    • Year and Date
      20120527-20120601
    • Invited
  • [Presentation] Neural Hyperexcitability and the Effects of KCNQChannel Openers on Pentylenetetrazole Induced Seizures on Model Mice in BFNS2012

    • Author(s)
      Tomonoh Y, Saito R, Araki K, Deshimaru M,Takano Y,Hirose s.
    • Organizer
      12th International Child Neurology Congress/11th Asian and Oceanian Congress of Child Neurology
    • Place of Presentation
      Brisbane, Australia
    • Year and Date
      20120527-20120601
  • [Presentation] Genetic analysis of PRRT2 for benign infantile epilepsy,infantile convulsions with choleoathetosis syndrom, and benign convulsions with mild gastroenteritis

    • Author(s)
      Ishii A, Yasumoto S, Ihara Y, Inoue T, Fujita T, Nakamura N, Ohfu M, Lee WT, Kaneko S, Hirose S.
    • Organizer
      2012 Korea Epilepsy Congress
    • Place of Presentation
      Incheon, Korea
  • [Presentation] Genetic analysis of Alternating Hemiplegia of Childhood

    • Author(s)
      Ishii A, Saito Y, Sasaki M, Hirose S.
    • Organizer
      10th European Congress of Epileptology
    • Place of Presentation
      London, UK
  • [Book] Nicotinic acetylcholine receptor mutations2012

    • Author(s)
      Steinlein OK, Kaneko S, Hirose S.
    • Total Pages
      1-15
    • Publisher
      Jesper's Basic Mechanisms of the Epilepsies

URL: 

Published: 2014-07-24   Modified: 2023-03-16  

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