マラソン走行に対する心血管系ストレスバイオマーカーの応答
Anna Siekierzycka1, Adrianna Radulska1, Marcin Woźniak1
1Department of Medical Laboratory Diagnostics - Fahrenheit Biobank BBMRI.pl, Medical University of Gdansk, Gdansk, Poland.
Sports medicine and health science
|January 7, 2026
まとめ
マラソン走行は心臓ストレスバイオマーカーを増加させる。トリメチルアミン-N-オキシド(TMAO)のベースラインレベルが高いほど、レース後の心臓トロポニンI(cTnI)およびエンドセリン-1(ET-1)の増加が大きいことが予測される。TMAOは、持久性イベントに対する心血管系の反応の指標となる可能性がある。
科学分野:
- 心臓病学
- 運動生理学
- メタボロミクス
背景:
- マラソンなどの集中的で長時間の運動は、心血管系の健康に悪影響を与える可能性がある。
- トリメチルアミン-N-オキシド(TMAO)は、心血管系の有害事象に関連する代謝物である。
- 運動誘発性の心血管系反応を理解することは、アスリートの健康にとって非常に重要である。
研究 の 目的:
- 男性マラソンランナーにおける運動誘発性の生理学的反応を評価すること。
- マラソン後の心血管系マーカーの上昇とベースラインの血漿TMAOレベルとの関連を調査すること。
- 持久性アスリートにおける心血管系ストレスの潜在的なマーカーとしてTMAOを検討すること。
主な方法:
- 28人の男性マラソンランナーから、ベースライン時、マラソン直後、およびマラソン2週間後に血液サンプルを採取した。
- 血清心臓トロポニンI(cTnI)、エンドセリン-1(ET-1)、ガラクトース-3、ペンタトラキシン-3、およびGDF-15を測定した。
- トリメチルアミン(TMA)およびTMAOを、超高性能液体クロマトグラフィー-質量分析法を用いて定量化した。
主要な成果:
- マラソン走行は、循環する心血管系バイオマーカーを有意に増加させた。
- マラソン後のcTnIおよびET-1レベルの上昇は、ベースラインのTMAOレベルの上昇と正の相関があった。
- マラソン後の血漿TMAレベルも増加を示した。
結論:
- ベースラインのTMAOレベルが高いほど、マラソン後のcTnIおよびET-1の上昇が大きいことと関連していた。
- TMAOは、マラソン走行に対する心血管系ストレス反応を評価するための新規バイオマーカーとして機能する可能性がある。
- この発見は、極度の持久性運動が心血管系に与える影響を監視する上でTMAOが果たす潜在的な役割を強調している。
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