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アデノシンサプリメントを摂取した血液の心臓症は,重度の地域性性缺血の後に発生した後発症性機能不全を軽減する
V H Thourani1, R S Ronson, D G Van Wylen
1Division of Cardiothoracic Surgery, Department of Surgery, Carlyle Fraser Heart Center-Cardiothoracic Research Laboratory, Crawford Long Hospital of Emory University School of Medicine, Atlanta, GA 30365-2225, USA.
Circulation
|November 24, 1999
まとめ
リパーフュージョン中に投与されたアデノシン (ADO) は,後発血性心機能を著しく改善し,心臓発作のサイズを減らす. 血性心症 (BCP) のADO補充も心臓発作の大きさを減らすが,再注射投与と同じくらい効果的に内皮機能を改善しない.
科学分野:
- 心血管科学 心血管科学
- 心臓外科手術について
- 薬理学 薬理学とは
背景:
- 心筋麻痺におけるアデノシン (ADO) 投与は,心筋筋不全性損傷を減らすことが知られている.
- 心筋再注射損傷を緩和するためにADO投与の最適なタイミングは,依然として調査中です.
- この研究では,再注射中のADOと対比して,ADO補給された血液心臓病 (BCP) の有効性を調査しています.
研究 の 目的:
- ADOで補充されたBCPまたは再注射中に投与されたADOが,重度の地域性イシュケミアの後のポストイシュケミアの機能不全を軽減するという仮説を検証する.
- 異なるADO投与戦略が心筋機能と損傷マーカーに与える影響を評価する.
主な方法:
- 深刻な地域性心筋不全症の犬のモデルが,左前垂動冠動脈閉塞経由で誘発されました.
- 3つのグループは,補足されていないBCP,ADO補足されたBCP (ADO-CP),または再注射中のADO (ADO-R) の異なる治療を受けました.
- 発血後の機能,心臓発作の大きさ,心筋腫,中性粒子の粘着度を評価した.
主要な成果:
- ADO-Rは,BCPと比較して,ポスチケミアの地域性シストリック収縮を著しく改善しました.
- ADO-CPとADO-Rは,BCPと比較して,心臓発作のサイズと心筋腫を減少させた.
- ADO-Rは中性粒子の内皮への粘着を弱めたが,ADO-CPはそうしなかった.
結論:
- リパーフュージョン中のADO投与は,後発血性地域機能の保存と内皮機能不全の緩和において,ADO補充の心不全より優れている.
- この2つの戦略は,心臓発作の大きさや心筋腫を効果的に軽減します.
- この発見は,心臓保護効果を最大化するために,ADO投与のタイミングが重要なことを強調しています.
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