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冠動脈疾患の患者におけるC反応性タンパク質濃度の上昇と内皮血管活性障害
S Fichtlscherer1, G Rosenberger, D H Walter
1Department of Internal Medicine IV, Division of Cardiology, Johann W. Goethe University, Frankfurt, Germany.
Circulation
|August 30, 2000
まとめ
高濃度のC反応性タンパク質 (CRP) は,全身性炎症の兆候であり,冠動脈疾患患者の内皮血管機能障害と関連しています. CRPレベルを正常化すると,血流反応が改善され,内皮機能不全の一時的な危険因子が示唆される.
科学分野:
- 心血管医学 心血管医学
- 炎症の研究 炎症の研究
- 血管生物学 血管生物学
背景:
- 血清中のC反応性タンパク質 (CRP) 濃度の上昇は,炎症の敏感なマーカーである.
- 炎症は冠動脈疾患 (CAD) と内皮機能不全に関連しています.
- 内皮機能不全は冠動脈イベントに寄与する可能性があります.
研究 の 目的:
- 高濃度のCRPが異常な全身内皮血管反応と相関しているという仮説を検証する.
- 男性CAD患者におけるCRPレベルと内皮機能の関連性を調査する.
主な方法:
- 静脈閉塞プレシスモグラフィーを用いて前腕の血流を介して評価された血管反応性.
- 測定されたエンドセリウム依存 (アセチルコリン) とエンドセリウム依存 (ナトリウムニトロプルシド) の反応.
- 60人の男性患者からのデータを分析し,血管学的にCADが確認されました.
主要な成果:
- アセチルコリンに対する前腕の血流反応は,CRPレベルと逆相関していた (r=-0.46,P:=0.001).
- 増加したCRPは,古典的なCADリスク要因を考慮した後でも,縮した内皮血管拡張能力の独立した予測因子でした.
- 3ヶ月間にわたるCRPレベルの正常化は,内皮介介の前腕の血流の改善と関連していました.
結論:
- システミック炎症を示すCRPの血清濃度の上昇は,全身内皮血管拡張機能の鈍化と関連しています.
- 増加したCRPは,内皮機能不全の一時的な独立した危険因子である可能性があります.
- 炎症のマーカーとしてCRPを動脈硬化疾患の進行と関連付けることは,CADの病原性についての洞察を提供します.
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