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Myocardial injury after ischemia (I) and reperfusion (R) is related to leukocyte activation with subsequent release of cytokines and oxygen-derived free radicals as well as complement activation. In our study, the cardioprotective effects of exogenous C1 esterase inhibitor (C1 INH) were examined in a rat model of myocardial I + R (i.e., 20 min + 24 hr or 48(More)
Simvastatin, a 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase inhibitor, has been shown to lower serum cholesterol levels and normalize endothelial cell function. Moreover, HMG-CoA reductase inhibitors exert beneficial effects in coronary artery and cerebrovascular diseases. We examined the effects of simvastatin on leukocyte-endothelial cell(More)
BACKGROUND Simvastatin, a 3-hydroxy-methylglutaryl coenzyme A reductase inhibitor, has been shown to lower serum cholesterol levels in clinical use. Moreover, statins exert beneficial effects in vascular diseases by inhibition of leukocyte rolling, adherence, and transmigration. The aim of this study was to determine if pretreatment with simvastatin(More)
PURPOSE For treatment of univentricular heart, the Fontan operation has been established as the definitive palliation. The current controversy is mainly based on the high incidence of arrhythmias after an intra-atrial lateral tunnel Fontan operation. METHODS From January 1995 until April 2002, 46 children underwent a Fontan-type operation with or without(More)
Fragestellung Ziel dieser retrospektiven Untersuchung war es, die Mittel- und Langzeitergebnisse der operativen Korrektur von Aortenisthmusstenosen (ISTHA) bei Erwachsenen zu erfassen. Patienten und Methodik Zwischen August 1985 und Januar 1999 wurden 20 Patienten (8 Frauen, 12 Männer) wegen ISTHA im Alter 19–60 Jahren (im Mittel 33 Jahre) operiert. Alle(More)
The term ischemia-reperfusion injury describes the experimentally and clinically prevalent finding that tissue ischemia with inadequate oxygen supply followed by successful reperfusion initiates a wide and complex array of inflammatory responses that may both aggravate local injury as well as induce impairment of remote organ function. Conditions under(More)
Recent evidence indicates that chronic hyperhomocysteinemia, which is found in from 9 to 15% of the general population, is an independent risk factor for the development of atherosclerosis. We sought to elucidate the mechanism by which exposure of the vascular wall to high levels of homocysteine initiates this inflammatory reaction. We examined the acute(More)
BACKGROUND The serine protease inhibitor aprotinin has been successfully used to reduce blood loss in patients undergoing cardiac operations. We studied aprotinin for its ability to modulate leukocyte-endothelial cell interactions after ischemia and reperfusion. METHODS The effects of aprotinin on leukocyte-endothelial cell interactions were observed by(More)
OBJECTIVE Early coronary reperfusion of the ischemic myocardium is a desired therapeutic goal to preserve myocardium. However, reperfusion itself contributes to an additional myocardial injury (ie, reperfusion injury), which has been attributed to neutrophil infiltration with subsequent release of proteases and oxygen-derived radicals. We studied the(More)
BACKGROUND AND PURPOSE The Na(+)/H(+) exchange (NHE) inhibitor cariporide is known to ameliorate ischaemia/reperfusion (I/R) injury by reduction of cytosolic Ca(2+) overload. Leukocyte activation and infiltration also mediates I/R injury but whether cariporide reduces I/R injury by affecting leukocyte activation is unknown. We studied the effect of(More)