セロトニン1A受容体は,発達期に作用し,成人の正常な不安のような行動を確立します

Cornelius Gross¹, Xiaoxi Zhuang, Kimberly Stark

¹Center for Neurobiology and Behavior, Columbia University, New York 10032, USA.

Nature

|March 29, 2002

まとめ

産後初期の海馬と皮質におけるセロトニン1A受容体の発現は,不安のような行動を救う. これは,成人における気分調節の確立における発達セロトニンシグナル伝達の重要な役割を強調しています.

科学分野:

神経科学は神経科学である.
行動神経科学は,行動神経科学である.
分子精神医学は分子精神医学である.

背景:

セロトニンは気分調節に重要な役割を果たし,セロトニン薬は不安やうつ病を効果的に治療します.
セロトニン1A受容体アゴニストは,抗不安剤の性質を示し,ノックアウトマウスの体内に存在しないと,不安のような行動が増加する.

研究の目的:

特定の脳領域と,セロトニン1A受容体の機能が不安のような行動を調節する上で重要な発達タイミングを調査する.
行動的救助におけるセロトニン1A受容体の発達的必要性対成人の機能性を明らかにする.

主な方法:

セロトニン1A受容体を持たないトランス遺伝子マウスの組織特異的な条件付き救出戦略を使用しました.
特定の脳領域 (海馬,皮質,ラフェ核) の受容体発現を回復し,異なる発達時間点 (産後対成人) でノックアウトされたマウスの行動的救済を調査しました.

主要な成果:

ヒポカンプスと皮質におけるセロトニン1A受容体の発現を回復させ,ラフェ核を回復させることは,ノックアウトされたマウスの不安のような行動を救うのに十分であった.
産後期初期における受容体発現は,成人期には必要でなかったが,この行動的救済には必要だった.

結論:

産後発達プロセスは,成人の不安のような行動の確立に不可欠です.
セロトニン1A受容体の発達的役割は,成人期における治療介入によって標的とされたときの機能とは異なる場合があります.

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