トリプトファンの抑うつはナプロキセンの副作用に寄与する可能性があります
Soumita Ghosh1, Nicholas F Lahens1, Kayla Barekat1
1Institute for Translational Medicine and Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Nature communications
|February 14, 2026
まとめ
ナプロキセンのような非ステロイド性抗炎症薬 (NSAIDs) は,血タンパク質からトリプトファンを取り除き,トリプトファンのレベルを下げます. ネズミのトリプトファンサプリメントは,ナプロキセンによって引き起こされた腸および心臓の炎症および損傷を和らげました.
科学分野:
- 薬理学 薬理学とは
- バイオケミストリー バイオケミストリー
- 胃腸内科 胃腸内科
背景:
- 非ステロイド性抗炎症薬 (NSAIDs) は,痛みや炎症の緩和に広く使用されています.
- しかし,NSAIDは,重要な胃腸および心臓血管の副作用と関連しています.
- NSAID誘発の毒性の早期発見のためのバイオマーカーが必要です.
研究 の 目的:
- プラズマの代謝産物に対するナプロキセンとセレコキシブの影響を調査する.
- ナプロクセンによって引き起こされる変化の背後にあるメカニズムを解明する.
- トリプトファンサプリメントの治療の可能性を評価する.
主な方法:
- 健康なボランティアにおけるプラセボ,ナプロキセン,セレコキシブ効果の比較.
- マウスモデルでの発見の検証.
- トリプトファン濃度,消化器系血流,炎症に関連する遺伝子発現の評価.
主要な成果:
- ナプロキセンはセレコキシブではないが,プラズマトリプトファンとキヌルニンのレベルを低下させた.
- この減少は,ナプロキセンが結合したトリプトファンを置き換えたことに起因した.
- マウスのトリプトファンサプリメントは,排泄中の血流と腸内および心臓の炎症マーカーを減少させた.
結論:
- ナプロクセンの誘発によるトリプトファンの減少は,サイクロオキシゲネーゼ抑制とは無関係です.
- ナプロクセンの結合トリプトファンの置換は,その毒性に貢献します.
- トリプトファンサプリメントは,NSAIDによって引き起こされる胃腸および心血管損傷に対する保護戦略を提供することができます.
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