分子エコーカルディオグラフィによる心筋梗塞性記憶イメージング
Flordeliza S Villanueva1, Erxiong Lu, Shivani Bowry
1Cardiovascular Institute, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA. villanuevafs@msx.upmc.edu
Circulation
|January 11, 2007
まとめ
セレチンを標的とする新しい超音波コントラスト剤は,最近発血した心臓筋を特定することができます. この発見により,胸痛患者の急性冠動脈症候群の早期かつより正確な診断が可能になるかもしれない.
科学分野:
- 心血管画像検査についてです.
- バイオマテリアル科学 バイオマテリアル科学
- 診断医学 診断医学
背景:
- 急性冠動脈症候群 (ACS) の診断は,心筋小動脈不全を特定する難しさのために課題を提示します.
- 白血球の粘着分子は,イシュケミア/再輸液の間に内皮にアップレギュレーションされ,イシュケミアイベント後に持続します.
研究 の 目的:
- 最近の心筋不全のエコーカルディオグラフィの識別のために,内皮セレクトリンを標的としたマイクロバブルを開発する.
- これらの標的微小泡の有効性を,心筋不全症のラットモデルで評価する.
主な方法:
- シアリルルイス ((x)) (MB ((sLex)) と対照微泡 (MB ((CTL)) と結合した合成脂質微泡.
- ネズミの腸内顕微鏡を用いて,炎症した内皮に微小泡の粘着を評価した.
- 冠動脈閉塞と再注血後のラットにおけるエコー・カルディオグラフィー画像検査を行い,MB (sLex) またはMB (CTL) を注入した.
主要な成果:
- MB(sLex) は,コントロールバブルと比較して,炎症した内皮に著しく高い粘着性を示した.
- エコーカルディオグラフィでは,MB(sLex) を用いてMB(CTL) に比べて,発血後の心筋縮がより多く示された.
- 免疫ステーリングは,不全性心筋におけるP-セレクチン発現を確認した.
結論:
- 最近発血した心筋梗塞のエコーカルディオグラフィの識別は,選択された標的型超音波コントラスト剤で達成できます.
- このアプローチは,急性冠動脈症候群の早期かつより正確な診断を約束しています.
- 心臓の起源が不明な胸痛の患者にとって,潜在的に新しい診断ツールを提供している.
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