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Changing activities of neurons controlling reproduction in menopausal transition and neural mechanism underlying hot flush

Research Project

Project/Area Number 21K15194
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 46010:Neuroscience-general-related
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Goto Teppei  国立研究開発法人理化学研究所, 生命機能科学研究センター, 研究員 (20772049)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywords更年期 / 老化 / 生殖中枢 / イメージング / キスペプチン / ホットフラッシュ
Outline of Research at the Start

更年期の女性において、生殖機能の老化に伴うエストロジェンの急激な減少が自律機能に変調をきたし、更年期障害の原因となる。生殖中枢キスペプチンニューロンの活動はエストロジェンによって負のフィードバック調節を受ける。また、キスペプチンニューロンの軸索は体温調節中枢を含む自律中枢に見られ、自律機能を上位で制御していると推定される。本研究は、更年期のキスペプチンニューロンの活動変容とホットフラッシュが更年期に顕在化する仕組みを神経回路レベルで解明することを目指す。

Outline of Final Research Achievements

In perimenopausal women, the estrogen decline with ovarian aging likely triggers menopausal symptoms induced by changing the function of autonomic function. The current study aimed to elucidate the dynamics of the pulsatile activity of kisspeptin neurons as the reproductive center during reproductive aging and the neural circuit mechanism inducing hot flashes in perimenopause. During the transition to reproductive senescence, the frequency of kisspeptin pulses remains mostly unchanged, whereas the intensities tend to decline. The results were published as the original article. We also found that ovariectomized mice show hot flash-like symptoms, in which a rapid rise in tail skin temperature is maintained for several minutes.

Academic Significance and Societal Importance of the Research Achievements

閉経より寿命が長い動物自体が珍しく、ホットフラッシュを含む更年期障害の動物モデルの欠如が、ホットフラッシュに限らず更年期障害の神経回路的な発症機序の理解を妨げてきた。本研究によって、モデル動物であるマウスにおいてもホットフラッシュ症状が観察され、ホットフラッシュモデルとしての有用性を示せた。ホットフラッシュを導く神経回路に生殖中枢キスペプチンニューロンのパルス活動が関与する可能性は低く、別のニューロンに着目したアプローチが必要である。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 Other

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

  • [Journal Article] Dynamics of pulsatile activities of arcuate kisspeptin neurons in aging female mice2023

    • Author(s)
      Goto Teppei、Hagihara Mitsue、Miyamichi Kazunari
    • Journal Title

      eLife

      Volume: 12

    • DOI

      10.7554/elife.82533

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Kisspeptin neurons as a key player bridging the endocrine system and sexual behavior in mammals2022

    • Author(s)
      Nakamura Sho、Watanabe Youki、Goto Teppei、Ikegami Kana、Inoue Naoko、Uenoyama Yoshihisa、Tsukamura Hiroko
    • Journal Title

      Frontiers in Neuroendocrinology

      Volume: 64 Pages: 100952-100952

    • DOI

      10.1016/j.yfrne.2021.100952

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cellular and molecular mechanisms regulating the KNDy neuronal activities to generate and modulate GnRH pulse in mammals2022

    • Author(s)
      Ikegami Kana、Watanabe Youki、Nakamura Sho、Goto Teppei、Inoue Naoko、Uenoyama Yoshihisa、Tsukamura Hiroko
    • Journal Title

      Frontiers in Neuroendocrinology

      Volume: 64 Pages: 100968-100968

    • DOI

      10.1016/j.yfrne.2021.100968

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 閉経過程における キスぺプチンニューロンのパルス活動動態2023

    • Author(s)
      後藤 哲平、宮道 和成
    • Organizer
      第116回日本繁殖生物学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A Neural Basis of Malnutrition-mediated Pubertal Failure in Female Mice2023

    • Author(s)
      Teppei Goto, Kazunari Miyamichi
    • Organizer
      MBSJ2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 給餌状態と性成熟をつなぐ視床下部神経回路2022

    • Author(s)
      後藤哲平
    • Organizer
      日本獣医学会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Remarks] プレスリリース

    • URL

      https://www.riken.jp/press/2023/20230602_1/index.html

    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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