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Local connections of excitatory neurons to parvalbumin-containing interneurons in cerebral cortex of mice.

Research Project

Project/Area Number 25830034
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Nerve anatomy/Neuropathology
Research InstitutionKagoshima University (2014)
Kawasaki Medical School (2013)

Principal Investigator

KURAMOTO Eriko  鹿児島大学, 医歯(薬)学総合研究科, 助教 (60467470)

Project Period (FY) 2013-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsパルブアルブミン陽性ニューロン / 大脳皮質 / インターニューロン / 興奮性ニューロン / 細胞内記録染色法 / Layer 6 / 皮質-視床投射ニューロン / ラット / 皮質ー視床投射ニューロン / 梨状様皮質
Outline of Final Research Achievements

Parvalbumin (PV)-positive neurons are the largest subpopulation of cortical GABAergic interneurons. For understanding the role of PV neurons, it is important to reveal the driver input of the interneurons.
In the present study, we morphologically investigated local excitatory inputs to PV neurons in the cerebral cortex, using the transgenic mice in which the dendrites and cell bodies of PV neurons were specifically labeled with GFP. In cortical slices from the transgenic mice, single pyramidal neurons were intracellularly labeled with biocytin. We reconstructed the axon fibers of pyramidal neurons and counted the number of appositions formed between the axon fibers of each pyramidal neuron and the input sites of PV neurons. The relative frequencies of appositions formed by layer (L) 2-5 and L6 pyramidal neurons were 14% and 23%, respectively, of the entire axon varicosities, suggesting a difference in the local excitatory control of PV neurons between L2-5 and L6 pyramidal neurons.

Report

(3 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • Research Products

    (4 results)

All 2015 2014

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (1 results)

  • [Journal Article] Ventral medial nucleus neurons send thalamocortical afferents more widely and more preferentially to layer 1 than neurons of the ventral anterior-ventral lateral nuclear complex in the rat.2015

    • Author(s)
      Kuramoto E, Ohno S, Furuta T, Unzai T, Tanaka YR, Hioki H, Kaneko T.
    • Journal Title

      Cereb Cortex

      Volume: 25 Issue: 1 Pages: 221-235

    • DOI

      10.1093/cercor/bht216

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ascending parabrachio-thalamo-striatal pathways: Potential circuits for integration of gustatory and oral motor functions.2015

    • Author(s)
      Iwai H, Kuramoto E, Yamanaka A, Sonomura T, Uemura M, Goto T.
    • Journal Title

      Neuroscience

      Volume: 294 Pages: 1-13

    • DOI

      10.1016/j.neuroscience.2015.02.045

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ventral medial nucleus neurons send thalamocortical afferents more widely and more preferentially to layer 1 than neurons of the ventral anterior-ventral lateral nuclear complex in the rat.2014

    • Author(s)
      Kuramoto E, Ohno S, Furuta T, Unzai T, Tanaka YR, Hioki H, Kaneko T
    • Journal Title

      Cerebral Cortex

      Volume: in press

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] マウス大脳新皮質の運動野における興奮性ニューロンから パルブアルブミン陽性インターニューロンへの入力の定量解析2014

    • Author(s)
      倉本恵梨子、日置寛之、田中康裕、山中淳之、岩井治樹、 大野幸、金子武嗣、後藤哲哉
    • Organizer
      日本解剖学会第70回九州支部学術集会
    • Place of Presentation
      産業医科大学 ラマツィーニホール
    • Year and Date
      2014-10-25
    • Related Report
      2014 Annual Research Report

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Published: 2014-07-25   Modified: 2019-07-29  

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