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プラセボによる疼痛緩和の神経回路の基礎
Chong Chen1,2,3, Jesse K Niehaus1,2,3, Fatih Dinc4,5
1Department of Cell Biology and Physiology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
Nature
|July 24, 2024
まとめ
痛みを和らげるという期待は 特定の脳の経路を活性化し 痛みの知覚を減少させます この研究は,プラセボ鎮痛に関わる重要な神経回路,ロストラル前帯状皮質からポンチン核への経路を特定しました.
科学分野:
- 神経科学
- 痛みに関する研究
- 心 と 体 の 医学
背景:
- プラセボ効果は 精神と身体の相互作用を示し 緩和を期待することで 痛みの知覚を減らすことができます
- プラセボ鎮痛の基礎となる神経メカニズムはほとんど不明であり,治療開発を阻害しています.
- これらの回路を理解することは 新しい痛み管理戦略の開発に不可欠です
研究 の 目的:
- プラセボ鎮痛の神経回路の基礎を明らかにする.
- 痛みの緩和を媒介する特定の神経経路を特定する.
- 前頭皮質から小脳までの経路が 痛みの認知制御に 果たす役割を調べる
主な方法:
- プラセボのような疼痛緩和のためのマウス行動分析の開発.
- ニューラル活動を監視するために,in vivoカルシウムイメージングと電気生理学的記録.
- ポンチン核ニューロンのトランスクリプトミックの分析と小脳関わりの調査.
主要な成果:
- 痛みを和らげる期待による鎮痛は,ロストラル前帯状皮質 (rACC) のニューロンにより,ポンチン核 (Pn) に発射される.
- 痛みを和らげる期待は,rACC→Pn経路における活動と神経伝達を強化する.
- この経路の阻害はプラセボの鎮痛作用をなくし,活性化は鎮痛作用をもたらした.
結論:
- rACC→Pn経路は,プラセボ鎮痛のための重要な神経基質である.
- この前頭皮質から小脳への経路は,痛みの管理のための潜在的な治療目標です.
- 小脳はこの経路を通じて 認知の痛みを調節する役割を果たします
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