下垂体ネットワークの振動によって制御される父親の行動のための神経ホルモン回路
Stefanos Stagkourakis1, Kristina O Smiley2, Paul Williams3
1Department of Neuroscience, Biomedicum B4, Karolinska Institutet, Solnavägen 9, 171 65 Stockholm, Sweden.
Cell
|August 9, 2020
まとめ
科学者は 脳の内分泌回路が 父の介護を制御していることを発見しました ドーパミンニューロンの電気パターンはプロラクチンレベルに影響し,雄性マウスの親の行動に不可欠な脳の経路を活性化します.
科学分野:
- 神経内分泌学
- 行動神経科学
- 比較生物学
背景:
- 父の行動は種の生存に不可欠ですが,動物種によって大きく異なります.
- 父の介護を制御する 神経系と内分泌系の仕組みはよくわかっていない.
- これらのメカニズムを理解することで 保護された 異なる親の戦略の洞察が得られます
研究 の 目的:
- ネズミとマウスの異なる父親のケア戦略の神経内分泌的基盤を調査する.
- 特定の脳の回路と 分子経路を特定して 父の行動を制御する
- 種特有の親の役割を決定するためにこれらの経路がどのように調節されているかを解明する.
主な方法:
- スプラグ・ダウリーマウス (父親のケアが少ない) とC57BL/6マウス (父親のケアが多い) を用いた比較研究.
- ドーパミンニューロンの電気振動パターンを分析する 電気生理学的記録
- 神経回路の光遺伝的操作とホルモン測定 (プロラクチンレベル)
- 行動の変化を評価するために,プロラクチン注射を含む薬理学的介入.
主要な成果:
- ドーパミンニューロンの 明確な電気的振動パターンは 父のケアレベルと相関しています
- ドーパミンニューロン,プロラクチン,および中間視前領域のガランリンニューロンが関与する回路は,マウスの父親の行動を媒介する.
- ネズミのプロラクチンレベルと 父の行動が 変化しました
- プロラクチン注射は,親ではない雄のネズミに親のケアを誘発し,重要な内分泌の役割を示唆した.
結論:
- 周波数調節された脳内分泌脳回路は 父のケア戦略の重要な調節器として機能します
- ドーパミンニューロンの電気的振動パターンによるこの回路の調節が 種特有の父親の役割を決定する.
- 神経活動,プロラクチンなどのホルモンと 複雑な社会的行動の相互作用を 強調しています
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