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Research for a mechanism for generation of GnRH pulse regulated by neural activity of kisspeptin neurons in the arcuate nucleus

Research Project

Project/Area Number 23780285
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Applied animal science
Research InstitutionNational Institute of Agrobiological Sciences

Principal Investigator

WAKABAYASHI Yoshihiro  独立行政法人農業生物資源研究所, 動物生産生理機能研究ユニット, 主任研究員 (00510695)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsキスペプチン / 弓状核 / NKB / neurokinin B (NKB) / Dynorphin / パルス状分泌
Research Abstract

Kisspeptin neurons in the arcuate nucleus (ARC) might regulate pulsatile secretion of GnRH/LH. Neural activity of the majority of these neurons might burst simultaneously, however a mechanism for this phenomenon still remains unclear. In this study, we addressed how mechanism controls the simultaneous burst of majority of the ARC kisspeptin neurons. The ARC kisspeptin neurons have neural network each other by their fibers in the contralateral as well as ipsilateral side. And recording of neural activity revealed that neural activity of ARC kisspeptin neurons from both side were synchronized. These results suggest that synchronized neural activity of majority of ARC kisspeptin neurons might be controlled by neural network using their fibers.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Research-status Report
  • Research Products

    (20 results)

All 2013 2012 2011 Other

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (14 results) (of which Invited: 1 results)

  • [Journal Article] Electrophysiological and morphological evidence for synchronized GnRH pulse generator activity among kisspeptin/neurokinin B/dynorphin A (KNDy) neurons in goats2013

    • Author(s)
      Wakabayashi Y., Yamamura T., Sakamoto K., Mori Y., Okamura H
    • Journal Title

      J Reprod Dev

      Volume: 59 Pages: 40-48

    • NAID

      10031156810

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Electrophysiological and morphological evidence for synchronized GnRH pulse generator activity among kisspeptin/neurokinin B/dynorphin A (KNDy) neurons in goats.2013

    • Author(s)
      Wakabayashi Y.
    • Journal Title

      J Reprod Dev

      Volume: 59 Pages: 40-48

    • NAID

      10031156810

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Central administration of Neurokinin B activates kisspeptin/NKB neurons in the arcuate nucleus and stimulates luteinizing hormone secretion in ewes during the non-breeding season2012

    • Author(s)
      Sakamoto K., Murata K., Wakabayashi Y., Yayou K-I., Ohkura S., Takeuchi Y., Mori Y., Okamura H
    • Journal Title

      J. Reprod. Dev

      Volume: 58 Pages: 700-706

    • NAID

      10031146934

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Effect of peripherally administered kisspeptin-10 on GnRH neurosecretion into the hypophyseal portal circulation in ovaryectomized goat does2012

    • Author(s)
      Tanaka T., Ohkura S., Wakabayashi Y., Okamura H
    • Journal Title

      Small Ruminant Res

      Volume: 105 Pages: 273-276

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Journal Article] Central administration of Neurokinin B activates kisspeptin/NKB neurons in the arcuate nucleus and stimulates luteinizing hormone secretion in ewes during the non-breeding season.2012

    • Author(s)
      Sakamoto K.
    • Journal Title

      J Reprod Dev

      Volume: 58 Pages: 700-706

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Morphological Evidence for Direct Interaction Between Kisspeptin and GnRH Neurons at the Median Eminence of the Male Goat: An Immunoelectron Microscopic Study2011

    • Author(s)
      Matsuyama S., Ohkura S., Mogi K., Wakabayashi Y., Mori Y., Tsukamura H., Maeda K.-I., Ichikawa M., Okamura H
    • Journal Title

      J. Neuroendocrinol

      Volume: 94 Pages: 323-332

    • Related Report
      2012 Final Research Report
    • Peer Reviewed
  • [Presentation] A possible mechanism of generation of GnRH pulse2012

    • Author(s)
      Wakabayashi Y
    • Organizer
      The 2nd congress on kisspeptin signaling in brain
    • Related Report
      2012 Final Research Report
  • [Presentation] Senktide, a neurokinin B receptor agonist, stimulates pulsatile LH secretion through a mechanism mediated by the GnRH pulse generator in goats2012

    • Author(s)
      Wakabayashi Y., Yamamura T., Ohkura S., Homma T., Sakamoto K., Mori Y., Okamura H.
    • Organizer
      42th Society for Neuroscience Annual meeting
    • Related Report
      2012 Final Research Report
  • [Presentation] NKBは弓状核キスペプチン/NKBニューロンに作用してGnRHパルスを産生させる2012

    • Author(s)
      若林嘉浩、山村崇、大蔵聡、本間玲実、坂本光平、森裕司、岡村裕昭
    • Organizer
      第105回 日本繁殖生物学会
    • Related Report
      2012 Final Research Report
  • [Presentation] A possible mechanism of generation of GnRH pulse.2012

    • Author(s)
      若林嘉浩
    • Organizer
      The 2nd congress on kisspeptin signaling in brain.
    • Place of Presentation
      東京
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Senktide, a neurokinin B receptor agonist, stimulates pulsatile LH secretion through a mechanism mediated by the GnRH pulse generator in goats.2012

    • Author(s)
      若林嘉浩
    • Organizer
      42th Society for Neuroscience Annual meeting
    • Place of Presentation
      New Orleans, LA, USA
    • Related Report
      2012 Annual Research Report
  • [Presentation] NKBは弓状核キスペプチン/NKBニューロンに作用してGnRHパルスを産生させる2012

    • Author(s)
      若林嘉浩
    • Organizer
      第105回 日本繁殖生物学会
    • Place of Presentation
      茨城県つくば市
    • Related Report
      2012 Annual Research Report
  • [Presentation] Male kisspeptin neuronal network and its interaction with GnRH neurons in goats.2011

    • Author(s)
      Ohkura S., Matsuyama S., Mogi K., Wakabayashi Y., Mori Y., Tsukamura H., Maeda K., Ichikawa M., Okamura H.
    • Organizer
      2nd World congress on reproductive biology
    • Related Report
      2012 Final Research Report
  • [Presentation] Neurokinin B受容体阻害剤が性腺刺激ホルモン放出ホルモン(GnRH)パルス産生機構の活動におよぼす影響2011

    • Author(s)
      山村崇, 若林嘉浩, 大蔵聡, 本間玲実, 坂本光平, 森裕司, 岡村裕昭.
    • Organizer
      第104回 日本繁殖生物学会大会
    • Related Report
      2012 Final Research Report
  • [Presentation] 左右両側の弓状核キスペプチンニューロン群における同期した神経活動2011

    • Author(s)
      若林嘉浩, 山村崇, 本間玲実, 坂本光平, 森裕司,前多敬一郎, 岡村裕昭
    • Organizer
      第104回 日本繁殖生物学会大会
    • Related Report
      2012 Final Research Report
  • [Presentation] 雄ヤギ弓状核におけるキスペプチン、ニューロキニンBおよびダイノルフィンの発現2011

    • Author(s)
      本間玲実, 若林嘉浩, 山村崇, 坂本光平, 大蔵聡, 森裕司, 岡村裕昭
    • Organizer
      第104回 日本繁殖生物学会大会
    • Related Report
      2012 Final Research Report
  • [Presentation] Effects of senktide, a Neurokinin B receptor agonist, on neural activity of arcuate kisspeptin neurons and luteinizing hormone secretion in the goat2011

    • Author(s)
      Wakabayashi Y., Ohkura S., Sakamoto K., Murata K., Homma T., Mori Y., Maeda K-I., Okamura H.
    • Organizer
      40th Society for Neuroscience Annual meeting
    • Related Report
      2012 Final Research Report
  • [Presentation] 左右両側の弓状核キスペプチンニューロン群における同期した神経活動

    • Author(s)
      若林嘉浩, 山村崇, 本間玲実, 坂本光平, 森裕司,前多敬一郎, 岡村裕昭
    • Organizer
      第104回 日本繁殖生物学会大会
    • Place of Presentation
      盛岡
    • Related Report
      2011 Research-status Report
  • [Presentation] Neurokinin B受容体阻害剤が性腺刺激ホルモン放出ホルモン(GnRH)パルス産生機構の活動におよぼす影響

    • Author(s)
      山村崇, 若林嘉浩, 大蔵聡, 本間玲実, 坂本光平, 森裕司, 岡村裕昭
    • Organizer
      第104回 日本繁殖生物学会大会
    • Place of Presentation
      盛岡
    • Related Report
      2011 Research-status Report
  • [Presentation] 雄ヤギ弓状核におけるキスペプチン、ニューロキニンBおよびダイノルフィンの発現

    • Author(s)
      本間玲実, 若林嘉浩, 山村崇, 坂本光平, 大蔵聡, 森裕司, 岡村裕昭
    • Organizer
      第104回 日本繁殖生物学会大会
    • Place of Presentation
      盛岡
    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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