• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Effect of long-term E2 exposure to hypothalamic kisspeptin neuron and luteinizing hormone surge generation

Research Project

Project/Area Number 17H07145
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Environmental physiology(including physical medicine and nutritional physiology)
Research InstitutionNippon Medical School

Principal Investigator

Kunimura Yuyu  日本医科大学, 大学院医学研究科, ポストドクター (60801488)

Project Period (FY) 2017-08-25 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordsキスペプチン / 視床下部 / 老化 / 黄体形成ホルモン / 脳 / 生殖 / エストロゲン / エストロゲン受容体 / 脳・神経 / 神経科学 / 生殖機能
Outline of Final Research Achievements

The aim of this study was to examine the effects of estrogen(E2) exposure to age-related reproductive decline. Although no luteinizing hormone (LH) surge was detected in aged female rats, aged rats which ovariectomized at 5-months of age showed E2-induced LH surge, which is necessary for ovulation. This result suggests that long-term physiological E2 exposure might alter LH surge generation. To examine the effect of E2 on LH surge generating mechanism, double fluorescent in situ hybridization against estrogen receptor α and kisspeptin was established.

Academic Significance and Societal Importance of the Research Achievements

加齢に伴う不妊のメカニズムは古くより研究されているものの、未だ解明されていない。現在の不妊治療は生殖機能が低下した状態での対処治療だが、本研究成果は生殖機能低下メカニズムの根本的な解明に焦点を当てていることから、本研究成果を応用しE2 暴露量や暴露期間の調整を成功させれば、予防医療などの臨床的応用も可能となってくる。また、本研究成果は、不妊や更年期障害などの治療法開発や、高齢出産の問題解決の新たな切り口となる、社会的にも意義のある研究であると期待される。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • Research Products

    (2 results)

All 2019

All Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] エストラジオール暴露が黄体形成ホルモン分泌と視床下部前腹側室周囲核キスペプチンニューロンのエストロゲン受容体αの発現に与える影響2019

    • Author(s)
      國村有弓、岩田衣世、小澤一史
    • Organizer
      第124回日本解剖学会総会・学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Effect of long-term estradiol exposure on luteinizing hormone release and expression of estrogen receptor alpha in hypothalamic kisspeptin neurons in female rats2019

    • Author(s)
      Kunimura Y., Iwata K., Ozawa H.
    • Organizer
      10th International meeting, Steroids and Nervous System
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research

URL: 

Published: 2017-08-25   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi