男性の性行為と報酬のための神経回路
Daniel W Bayless1, Chung-Ha O Davis2, Renzhi Yang1
1Departments of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA 94305, USA.
Cell
|August 12, 2023
まとめ
研究者達は 男性の性行為と報酬を制御する 神経回路を特定しました この回路は特定のニューロンと 物質Pを巻き込んで 交配を開始し 報酬の側面に不可欠です
科学分野:
- 神経科学
- 行動生物学
- 分子生物学
背景:
- 男性の性行為は 生殖に不可欠ですが その背後にある神経回路は 完全に理解されていません
- 遺伝的な男性性行為と報酬のための 特定の分子的に定義された神経回路は まだ特定されていない.
研究 の 目的:
- 男性の性行為とその報酬を制御する 神経回路を発見し特徴づけること
- 男性の交尾行動の開始と維持に関与する分子機構と神経経路を解明する.
主な方法:
- ニューロン間の上流と下流の関係を決定するために,エピスタシス研究を利用した.
- 特定のニューロン集団 (POATacr1ニューロン) の実験的活性化により,行動的結果が観察される.
- ドーパミンの放出と自己刺激の行動を測定し,回路の報酬特性を評価した.
主要な成果:
- BNSTprTac1の神経回路を発見し,POATacr1の神経を神経化する.
- BNSTprTac1ニューロンが物質Pを放出し,POATacr1ニューロンがTacr1経由で交配を開始することを実証した.
- POATacr1ニューロンを活性化すると 飽き飽きしたオスでも 交尾行動が誘発され ドーパミンの放出と自己刺激によって 報われることが分かりました
結論:
- 男性の性行為に不可欠な 特定の神経回路を発見した 運動制御,駆動,報酬を含む
- この回路における重要な分子媒介物質 Pを特定し, 交配の開始と化学感覚の入力をつなぎます.
- 男性の性行為の経験に 重要なPOATacr1ニューロンを確立した.
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