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皮質の桃体が社会的出会いを 形作る上で果たす重要な役割
Antonio V Aubry1,2,3, Romain Durand-de Cuttoli1,2,3, Elizabeth Karpman1,2,3
1Nash Family Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, New York, USA.
Nature
|February 12, 2025
まとめ
研究者は雄性マウスの特定の脳細胞を 攻撃的な行動に駆り立てていると特定しました これらの細胞を抑制することで 攻撃性が減り 社会的探求が増加し 攻撃性の鍵となる神経回路が 明らかになりました
科学分野:
- 神経科学
- 行動生物学
- 遺伝学
背景:
- 社会的階層と資源の保護に不可欠な 保存された行動です
- マウスの攻撃的行動には食欲 (アプローチ) と食欲 (攻撃) の相が含まれます.
研究 の 目的:
- 脳の領域と 神経回路を特定する 男性の攻撃性に関与する
- 腹側皮質の桃体 (COApl) の特定の細胞が攻撃的行動に果たす役割を調査する.
主な方法:
- マウスにおける全脳FOS発現の加重型相関ネットワーク解析
- COApl エストロゲン受容体1 (Esr1) を発現する細胞 (COAplEsr1) の化学遺伝および光遺伝的操作
- COAplEsr1が中腹部下垂体と中枢桃体に発射した分析
主要な成果:
- ヒポタラム,桃体,嗅覚皮質の領域を含む脳領域のクラスターは,男性攻撃者において共活性化を示した.
- COAplEsr1細胞は,男性における攻撃行動および前回の調査中に非常に活発でした.
- COAplEsr1細胞の抑制は,社会的報酬に影響を及ぼさず,攻撃性を低下させ,プロソーシャル調査を増加させた.
結論:
- COAplEsr1細胞はハブとして作用し,社会的刺激に反応して雄性マウスの攻撃性を促進します.
- COAplEsr1から中腹下垂体と中枢桃体への投影は,攻撃性にとって極めて重要です.
- これらの発見は 男性の攻撃性の根底にある 特定の神経機構を明らかにしています
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