AMPKとPPARデルタアゴニストは,運動を模倣するものです.
Vihang A Narkar1, Michael Downes, Ruth T Yu
1Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037, USA.
Cell
|August 5, 2008
まとめ
研究者らは,薬剤でAMPK-PPARdelta経路を標的にすると,走行耐久性が向上することがわかった. 口服薬であるAICARは,運動なしでもマウスの耐久性を著しく増加させ,代謝疾患の治療の可能性を提供しました.
科学分野:
- 運動生理学とは
- メタボリック疾患の研究
- 薬理学的介入 薬理学的介入
背景:
- 耐久性運動は健康に有益であり,代謝疾患に対する耐久性運動の効果を模倣または強化する薬の探求を促しています.
- レスベラトロールのような天然化合物は,耐久性を高める性質を示しますが,それらの代謝標的は不明です.
- 運動によって活性化される特定の分子経路を特定することは,ターゲットを絞った治療法の開発に不可欠です.
研究 の 目的:
- 経路特異薬がマウスの耐久力に与える影響を調査する.
- AMPK-PPARdelta経路をターゲットにすることで,運動の適応を向上させたり,運動とは無関係に耐久性を向上させることができるかどうかを判断する.
主な方法:
- マウスの耐久性は,トレッドミルの走行テストを使用して評価されました.
- PPARbeta/deltaアゴニストとAICAR (AMPKアゴニスト) が走行耐久性と筋肉特性に及ぼす効果を評価した.
- AICAR治療に対する反応として,代謝経路に関連する遺伝子発現を分析した.
主要な成果:
- 運動トレーニングとPPARbeta/deltaアゴニストは,オキシダティブ筋繊維と走行耐久性をマウスで相乗的に増加させた.
- 静止型マウスでは,単独のAICAR治療は,4週間後に走行耐久性を44%向上させました.
- AICAR治療は,重要な代謝遺伝子を誘発し,観察された耐久性向上の分子基盤を示唆しました.
結論:
- AMPK-PPARdelta経路は,耐久性を改善するための薬理学的介入の実行可能なターゲットです.
- この経路を標的にする経口活性薬は,トレーニングの適応を向上させることができます.
- AMPK-PPARdelta経路の薬理学的活性化により,運動なしでも耐久性を高め,代謝疾患に対する新しい治療戦略を提供することができる.
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