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2008 Fiscal Year Final Research Report

Study about the amygdala and anxiety-related neural circuit in brain

Research Project

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Project/Area Number 19591334
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Psychiatric science
Research InstitutionHokkaido University

Principal Investigator

IZUMI Takeshi  Hokkaido University, 大学院・医学研究科, 助教 (60312360)

Co-Investigator(Renkei-kenkyūsha) YAMAGUCHI Taku  北海道大学, 大学院・医学研究科, 助教 (80325563)
YOSHIOKA Mitsuhiro  北海道大学, 大学院・医学研究科, 教授 (40182729)
MATSUMOTO Machiko  北海道医療大学, 大学院・薬学研究科, 准教授 (70229574)
Project Period (FY) 2007 – 2008
Keywords精神薬理学
Research Abstract

不安の動物モデルであるラットの恐怖条件付けストレスにおいて、ストレス時に扁桃体基底核で、神経細胞の活性増加が認められ、同部位が不安に中心的な役割を果たしていることが明らかとなった。さらに、扁桃体基底核誘発電位が、fluvoxamine投与によって増強した。基底核での5-HT神経伝達増強によって、同部位のシナプス伝達効率が増加し、不安を抑制する何らかの神経機構が働いていることが示唆された。

  • Research Products

    (8 results)

All 2009 2008 2007

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (3 results)

  • [Journal Article] Early postnatal stress alters the extinction of context-dependent conditioned fear in adult rats2008

    • Author(s)
      Machiko Matsumoto
    • Journal Title

      Pharmacology Biochemistry Bihavior 89巻

      Pages: 247-252

    • Peer Reviewed
  • [Journal Article] Changes in amygdalaneural activity that occur with the extinction of context-dependent conditioned fear stress2008

    • Author(s)
      Takeshi Izumi
    • Journal Title

      Pharmacology Biochemistry Bihavior 90巻

      Pages: 297-304

    • Peer Reviewed
  • [Journal Article] Characterization of stress-induced suppression of long -termpotentiation in the hippocampal CA1 field of freely moving rats2008

    • Author(s)
      Riki Hirata
    • Journal Title

      Brain Research 1226巻

      Pages: 27-32

    • Peer Reviewed
  • [Journal Article] Pharmacokinetic interaction between tandospirone and fluvoxamine in therat contextual conditioned fear stressmodel and its functional consequence : Involvement of cytochrome P450 3A42008

    • Author(s)
      Hiroyuki Nishikawa
    • Journal Title

      Psychiatry and Clinical Neuroscience 62巻

      Pages: 591-596

    • Peer Reviewed
  • [Journal Article] Effect of different challenge doses after repeated citalopram treatment on extracellular serotonin level in the medial prefrontal cortex : In vivo microdialysis study2008

    • Author(s)
      Ihoko Muraki
    • Journal Title

      Psychiatry and Clinical Neuroscience 62巻

      Pages: 568-574

    • Peer Reviewed
  • [Presentation] Characterization and functional meaning of the conditioned fear-related neural cells in the basolateral amygdala2009

    • Author(s)
      泉 剛
    • Organizer
      第82回日本薬理学会年会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2009-03-16
  • [Presentation] Effect of fluvoxamine on the evoked field potentials in the basal amygdala induced by perirhinal cortex stimulation in vivo2008

    • Author(s)
      泉 剛
    • Organizer
      第81回日本薬理学会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2008-03-17
  • [Presentation] Evoked field potentials of the basal amygdale induced by perirhinal cortex stimulation2007

    • Author(s)
      泉 剛
    • Organizer
      第37回日本神経精神薬理学会
    • Place of Presentation
      札幌コンベンションセンター
    • Year and Date
      2007-07-13

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Published: 2010-06-10   Modified: 2016-04-21  

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