ホモシステイン,因子VIIa,および急性冠動脈症候群におけるトロンビン生成との関連
M K Al-Obaidi1, H Philippou, P J Stubbs
1National Heart and Lung Institute, Cardiology and Haematology Departments, Charing Cross Campus, Imperial College School of Medicine, London, UK. m.al-obaidi@rbh.nthames.nhs.uk
Circulation
|February 2, 2000
まとめ
急性冠動脈症候群 (ACS) の患者におけるホモシステイン濃度の上昇は,トロンビン生成マーカーの増加と相関しています. この研究では,ホモシステインとACSにおけるプロトロンボティック活動との関連が示され,その臨床効果に対する潜在的な説明が提供されています.
科学分野:
- 心血管医学 心血管医学
- 血液学 ヘマトロジ
- バイオケミストリー バイオケミストリー
背景:
- 以前の研究では,ホモシステインがトロンビン生成を促進することを示唆しています.
- このプロトロンボティック効果は,以前,急性冠動脈症候群 (ACS) の患者に実証されていませんでした.
研究 の 目的:
- ACS.を呈する患者における血ホモシステイン濃度とトロンビン生成マーカーの関連性を調査する.
- ホモシステインがACS.で観察されたプロトロンボティック状態に寄与するかどうかを決定する.
主な方法:
- ACS (急性心筋梗塞または不安定な胸痛) の患者117人,対照患者18人を募集した.
- プラズマホモシステイン,因子VIIa,プロトロンビン断片F1+2は,高性能液体染色体検査とELISAを用いて測定した.
- これらのマーカーの間の相関は,ACSと対照群で分析されました.
主要な成果:
- ACS患者では,対照群と比較して,プロトロンビン断片F1+2および因子VIIaが上昇した.
- ACS患者のホモシステイン濃度の上昇は,F1+2とFaktor VIIaの段階的な増加と関連していました.
- ホモシステインとF1+2,ホモシステインとF7a,およびF1+2とF7aの間で,ACS患者で有意な正の相関が見られた.
結論:
- 血ホモシステインの上昇は,ACS患者におけるトロンビン生成マーカーの増加と有意に関連しています.
- これらの発見は,ホモシステインがACSで観察されたプロトロンボティック効果に因果的な役割を果たす可能性があることを示唆しています.
- この研究は,急性冠動脈症候群の文脈でホモシステインのプロトロンボティック影響を説明する潜在的なメカニズムを提供します.
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