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The mechanism for fear learning concerning NMDA receptor NR2B subunit.

Research Project

Project/Area Number 19390309
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Psychiatric science
Research InstitutionNational Institute of Radiological Sciences

Principal Investigator

SHIN Ryong-moon  National Institute of Radiological Sciences, 分子イメージング研究センター, 主任研究員 (40443064)

Co-Investigator(Kenkyū-buntansha) 樋口 真人  独立行政法人放射線医学総合研究所, 分子イメージング研究センター, チームリーダー (10373359)
須原 哲也  独立行政法人放射線医学総合研究所, 分子イメージング研究センター, グループリーダー (90216490)
菅野 巌  独立行政法人放射線医学総合研究所, 分子イメージング研究センター, センター長 (10360356)
Co-Investigator(Renkei-kenkyūsha) HIGUCHI Makoto  独立行政法人放射線医学総合研究所, 分子イメージング研究センター, チームリーダー (10373359)
SUHARA Tetsuya  独立行政法人放射線医学総合研究所, 分子イメージング研究センター, グループリーダー (90216490)
KANNO Iwao  独立行政法人放射線医学総合研究所, 分子イメージング研究センター, グループリーダー (10360356)
Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2008: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2007: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Keywords精神薬理学 / 脳神経疾患 / ストレス / 神経科学 / 生理学 / 放射線
Research Abstract

We show that two distinct forms of LTP could be induced at amygdale synapses with an identical stimulation protocol depending on the level of postsynaptic membrane polarization. One form of LTP, resulting from pairing of postsynaptic depolarization and presynaptic stimulation, is induced by the activation of postsynaptic NMDA receptor, while same stimulation in the absence of postsynaptic depolarization leads to LTP, which is induced by the activation of presynaptic kainite receptor. There is a defined hierarchical order, such that presynaptic LTP is suppressed when postsynaptic LTP is induced by activation of CB1 receptors by endogenous cannabinoids released from postsynaptic cell. These results describe a previously unknown mechanism for the hierarchy of co-existing forms of LTP, possibly reflecting the hierarchy of memories for the previously experienced fearful events according to their aversiveness level.

Report

(5 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Products Report
  • Research Products

    (8 results)

All 2010 2009 2008

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (6 results)

  • [Journal Article] Hierarchical order of coexisting pre- and postsynaptic forms of long-term potentiation at synapses in amygdala2010

    • Author(s)
      辛 龍文
    • Journal Title

      Proceedings of the National Academy of Sciences of the United States of America

      Volume: 107 Pages: 19073-19078

    • Related Report
      Products Report
    • Peer Reviewed
  • [Journal Article] Neuroimaging and Physiological Evidence for Involvement of Glutamatergic Transmission in Regulation of the Striatal Dopaminergic System2009

    • Author(s)
      M Tokunaga, N Seneca, RM Shin, J Maeda, S Obayashi, T Okauchi, Y Nagai, MR Zhang, R Nakano, H Ito, RB. Innis, C Halldin, K Suzuki, M Higuchi, T Suhara
    • Journal Title

      The Journal of Neuroscience 26

      Pages: 1887-1896

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] POSTECH Brain Research Center. Neuronal control on animal behaviors.2010

    • Author(s)
      辛龍文
    • Organizer
      Ghost LTP in the Amygadala 12th POSTECH Brain Winter School.
    • Place of Presentation
      Pohang University of Science & Technology (POSTECH), Pohang, South Korea
    • Year and Date
      2010-02-04
    • Related Report
      2009 Final Research Report
  • [Presentation] Ghost LTP in the Amygadala2010

    • Author(s)
      辛龍文
    • Organizer
      12^<th> POSTECH Brain Winter School
    • Place of Presentation
      Pohang, 韓国
    • Year and Date
      2010-02-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Hierachical Order of Synaptic Plasticity in Amygadala2009

    • Author(s)
      辛龍文
    • Organizer
      第115回神経科学セミナー
    • Place of Presentation
      三重大学医学部
    • Year and Date
      2009-09-14
    • Related Report
      2009 Final Research Report
  • [Presentation] Hierachical Order of Synaptic Plasticity in Amygadala2009

    • Author(s)
      辛龍文
    • Organizer
      第115回 神経科学セミナー
    • Place of Presentation
      津、三重
    • Year and Date
      2009-09-14
    • Related Report
      2009 Annual Research Report
  • [Presentation] Synaptic mechanism for Fear memory2009

    • Author(s)
      辛龍文
    • Organizer
      大学院セミ
    • Place of Presentation
      上海交通大学生命科学技術学院
    • Year and Date
      2009-02-24
    • Related Report
      2009 Final Research Report
  • [Presentation] Synaptic mechanism for Fear memory2008

    • Author(s)
      辛龍文
    • Organizer
      第104回神経科学セミナー
    • Place of Presentation
      三重大学医学部
    • Year and Date
      2008-01-29
    • Related Report
      2009 Final Research Report

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Published: 2007-04-01   Modified: 2016-09-09  

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