ストレッチ と 消化 器系 の 栄養素 を 検知 する 感覚 神経 細胞
Erika K Williams1, Rui B Chang1, David E Strochlic1
1Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
Cell
|May 31, 2016
まとめ
この研究は,栄養素と胃の膨張を感知するために重要な特定のニューロンタイプ (GPR65とGLP1R) を特定し,それによって腸-脳通信を明確にします.
科学分野:
- 神経科学
- 胃腸内科
- 生理学
背景:
- 迷走神経は脳と内臓を繋ぐ 重要な神経経路で 自律的機能に不可欠です
- 胃腸内部の気性ニューロンは 腸内ホルモンや機械的刺激を検知し ホメオスタシスの重要な役割を果たします
研究 の 目的:
- 感覚神経細胞の分子の多様性を調べるため
- 栄養素や膨張などの消化器系インプットを感知する際の,異なるヴァーガルアファレント集団の特定の役割を解明する.
主な方法:
- 特定のヴァーガルニューロン集団 (GPR65とGLP1Rニューロン) の標的型調査のための遺伝的アプローチを使用した.
- オプトジェネティクス,体内ガンジオン画像, 遺伝学的に導かれた解剖学的なマッピング.
- 外部と中央の解剖学,伝導速度,およびin vitro/in vivo応答特性を含むニューロンの性質を評価した.
主要な成果:
- 摂取した栄養素に対するホメオスタティック反応の重要な媒介者としてGPR65ニューロンを特定した.
- GLP1Rニューロンは,胃と腸の機械的な膨張を感知する上で重要であると特徴付けられています.
- 神経のアイデンティティ,解剖学的プロジェクション,生理学的性質,腸-脳シグナル伝達における機能的役割の間の直接的なリンクを確立した.
結論:
- この研究は,腸内ホルモン反応と生理学的機能を媒介する際の,異なるヴァーガルアファレント亜型の特定の役割を明らかにしている.
- 遺伝的に定義された腸から脳までの神経細胞を通して,胃腸の生理学的神経制御を理解するための分子枠組みを提供します.
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