まとめ
血中ホモシステインの値上昇は,心不全性疾患 (IHD) と脳卒中リスクの控えめな予測因子である. ホモシステインのレベルを25%低下させると,メタアナリシスでIHDと脳卒中リスクの低下が関連していた.
科学分野:
- 心血管伝染病学 心血管伝染病学
- クリニカル生化学 臨床生化学
背景:
- 血中ホモシステイン濃度の上昇は,心不全性疾患 (IHD) と脳卒中のリスクの増加と関連しています.
- ホモシステインと血管疾患の正確な関係を理解することは,リスク評価に不可欠です.
研究 の 目的:
- ホモシステイン濃度と血管疾患,特にIHDと脳卒中のリスクとの関連性を体系的に評価する.
主な方法:
- MEDLINE (1966-1999) の包括的な文献検索により,ホモシステインと血管疾患リスクに関する観察研究が特定されました.
- 30件の研究から得られた個々の参加者のデータ (IHDイベント5073件,脳卒中イベント1113件) のメタ分析が行われました.
- 心血管リスク因子と回帰の希釈バイアスの調整が行われました.
主要な成果:
- 通常のホモシステイン濃度の25%の低下 (約. 3マイクロモル/L) は,IHDリスクの11%低下 (OR,0.89) と脳卒中リスクの19%低下 (OR,0.81) と関連していました.
- アソシエーションは,前向きな研究と比較して,遡及的研究においてより強く見られた.
結論:
- 高濃度のホモシステインは,健康な個体において,IHDと脳卒中リスクの控えめで独立した予測因子であるようです.
- ビタミン補給の遺伝研究とランダム化試験を含むさらなる研究が,因果関係と治療の可能性を確認するために必要である.
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