腸内微生物群に由来するデオキシコール酸は,ジペノシドの運動性能強化効果を媒介する
Xiangchang Yin1, Xiaojuan Chen1, Guang Yang1
1Beijing Institute of Radiation Medicine, Beijing 100850, China.
まとめ
ジペノシドは,腸内微生物群を変化させ,DCAのような胆酸を増やすことで運動能力を高めます. この研究は,Gypを模倣して,DCAが重要な仲介者であることを明らかにしています.
科学分野:
- 運動生理学とは
- マイクロバイオームの研究
- 薬理学 薬理学とは
背景:
- 薬理学的介入は,運動能力と生活の質のための運動適応を強化することができます.
- ジペノシド (Gyp) は運動能力と筋肉機能を改善しますが,そのメカニズムは不明です.
研究 の 目的:
- Gyp.による運動パフォーマンスの強化における腸内微生物群 (GM) の役割を調査する.
- Gypが運動能力を高めるメカニズムを解明する.
主な方法:
- 行動テスト,免疫光,16S rRNAシーケンシング,およびメタボロミクスを用いて耐久性フェノタイプを評価した.
- Gypの有効性を評価するために,GMと胆酸枯渇モデルを使用しました.
- UPLC-Q/TOF-MSとルシフェラーゼアッセイを用いてGypのFXRアンタゴニストを特定し,DCAの効果をin vitroとin vivoで検証した.
主要な成果:
- Gyp治療は,耐性を向上させ,ミオファイバーのタイプをシフトさせ,二次胆酸 (BAs) を豊かにするGMを再構成しました.
- Gypは腸内FXRシグナリングを阻害し,デオキシコール酸 (DCA) のような二次BAを増加させた.
- DCAは,TGR5-cAMP-PKAシグナリングを活性化することによって,ミオゲン分化を促進し,Gypのパフォーマンスを高める効果を模倣しました.
結論:
- Gypは運動ミメティックとして機能し,GMは身体的パフォーマンスの向上のための重要なターゲットです.
- DCA媒介のTGR5活性化は,薬理学的に運動適応を標的とする新しい洞察を提供します.
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