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2013 Fiscal Year Final Research Report

The expression of Glutamate-associate molecular and neurotrophic factor in the cochlea.

Research Project

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Project/Area Number 23580401
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Basic veterinary science/Basic zootechnical science
Research InstitutionGifu University

Principal Investigator

SAITO Shouichiro  岐阜大学, 応用生物科学部, 准教授 (60325371)

Co-Investigator(Kenkyū-buntansha) ATOJI Yasuro  岐阜大学, 応用生物科学部, 教授 (90151084)
Project Period (FY) 2011 – 2013
Keywords蝸牛 / グルタミン酸 / グルタミン酸トランスポーター / グルタミン酸レセプター / 神経栄養因子 / プロサポシン / In situ hybridization / RT-PCR
Research Abstract

The auditory stimulus is detected by inner hair cells and then transmitted to the brain by type I spinal ganglion neurons. In mammals, type I spinal ganglion neurons are revealed to express ionotropic AMPA, NMDA and kainate type receptors to form excitatory synapses with inner hair cells, and also appear to express vesicular glutamate transporter I to release glutamate to neurons in the brain. In birds, receptor neurons and spinal ganglion neurons could not be subdivided as mammals. Among receptor subunits examined, GluA1, 2, 3 and 4 mRNAs for AMPA type, GluN1, 2A, 2B and 3A for NMDA type, and GluK1, 2 and 4 mRNAs for kainate type were observed. Vesicular glutamate transporter II and III were also identified with different expression levels in the basilar papilla, and the spinal ganglion neurons were revealed to express vesicular glutamate transporter II. This study revealed glutamate plays a pivotal role in the excitatory synapse transmission in avian auditory pathway.

  • Research Products

    (6 results)

All 2014 2013 2012

All Journal Article (2 results) (of which Peer Reviewed: 2 results) Presentation (4 results)

  • [Journal Article] Differential expression of the alternatively spliced forms of prosaposin mRNAs in the rat choroid plexus2014

    • Author(s)
      Saito S., Saito K., Nabeka H., Shimokawa T., Kobayashi N., Marsuda S.
    • Journal Title

      Cell Tissue Res

      Volume: 356 Pages: 231-242

    • Peer Reviewed
  • [Journal Article] Prosaposin-derived peptide alleviates ischemia-induced hearing loss2012

    • Author(s)
      Terashita T., Saito S., Nabeka H., Hato N., Wakisaka H., Shimokawa T., Kobayashi N., Gyo K., Matsuda S.
    • Journal Title

      Acta Otolaryngol

      Volume: 133 Pages: 462-468

    • Peer Reviewed
  • [Presentation] 脈絡叢におけるプロサポシンmRNAの選択的スプライシングの発現性について2013

    • Author(s)
      齋藤正一郎、阿閉泰郎
    • Organizer
      第155回日本獣医学会学術集会
    • Place of Presentation
      東京
    • Year and Date
      20130328-30
  • [Presentation] ハト聴覚受容器におけるグルタミン酸レセプターおよび小胞性グルタミン酸トランスポーターについて2012

    • Author(s)
      齋藤正一郎、カリムMohammadラビウル、阿閉泰郎
    • Organizer
      第35回日本神経科学大会
    • Place of Presentation
      名古屋
    • Year and Date
      20120918-21
  • [Presentation] ゼブラフィンチ脳における2型小胞性グルタミン酸トランスポーターの免疫組織化学的局在2012

    • Author(s)
      阿閉泰郎、齋藤正一郎
    • Organizer
      第117回日本解剖学会総会・全国学術集会
    • Place of Presentation
      甲府
    • Year and Date
      20120326-28
  • [Presentation] ハトのコルチ器のラセン神経節細胞における小胞性グルタミン酸トランスポーターの発現性について2012

    • Author(s)
      齋藤正一郎、Mohammad Rabiul Karim、阿閉泰郎
    • Organizer
      第117回日本解剖学会総会・全国学術集会
    • Place of Presentation
      甲府
    • Year and Date
      20120326-28

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Published: 2015-07-16  

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