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2021 Fiscal Year Final Research Report

The role of steroid hormones on the formation of sexually dimorphic social behavior networks

Research Project

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Project/Area Number 19K03379
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 10040:Experimental psychology-related
Research InstitutionUniversity of Tsukuba

Principal Investigator

SANO Kazuhiro  筑波大学, 人間系, 客員研究員 (60736081)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywords社会行動神経回路 / 性ステロイドホルモン / エストロゲン受容体 / 性差 / 性行動 / 攻撃行動
Outline of Final Research Achievements

This study focused on elucidating how sex steroid hormones organize the sex-specific functions of social behavioral network in the brain. In this study, we have found that the activation of estrogen receptor α in the ventromedial hypothalamus (VMH) by testosterone is necessary for the full expression of male sexual behavior and its neural bases. We also clarify the development process how sexually dimorphic expression patterns of ERα and ERβ are formed from birth to the end of pubertal period.

Free Research Field

行動神経内分泌学

Academic Significance and Societal Importance of the Research Achievements

ヒトを含む多くのほ乳類では、社会性や情動性に性差が存在し、その違いは劇的なホルモンバランスの変化と急激な身体的成長が起こる思春期を境により顕著なものとなる。しかし、その性別特有な機能の発達メカニズムは未だ完全には解明されておらず、本研究の成果は、出生から思春期において雌雄の性に特徴的な社会性や情動性の基盤となる脳内機構がどのように構築されていくのかを知る上で重要な手掛りとなる。

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Published: 2023-01-30  

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