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Objectives: The purpose of this study was to assess the safety and efficacy of the adenosine regulating agent (ARA) acadesine for reducing long-term mortality among patients with post-reperfusion myocardial infarction (MI).
Background: No prospectively applied therapy exists that improves long-term survival after MI associated with coronary artery bypass graft (CABG) surgery-a robust model of ischemia/reperfusion injury. Pretreatment with the purine nucleoside autocoid adenosine mitigates the extent of post-ischemic reperfusion injury in animal models. Therefore, we questioned whether use of the ARA acadesine-by increasing interstitial adenosine concentrations in ischemic tissue-would improve long-term survival after post-reperfusion MI.
Methods: At 54 institutions, 2,698 patients undergoing CABG surgery were randomized to receive placebo (n = 1,346) or acadesine (n = 1,352) by intravenous infusion (0.1 mg/kg/min; 7 h) and in cardioplegia solution (placebo or acadesine; 5 microg/ml). Myocardial infarction was prospectively defined as: 1) new Q-wave and MB isoform of creatine kinase (CK-MB) elevation (daily electrocardiography; 16 serial CK-MB measurements); or 2) autopsy evidence. Vital status was assessed over 2 years, and outcomes were adjudicated centrally.
Results: Perioperative MI occurred in 100 patients (3.7%), conferring a 4.2-fold increase in 2-year mortality (p < 0.001) compared with those not suffering MI. Acadesine treatment, however, reduced that mortality by 4.3-fold, from 27.8% (15 of 54; placebo) to 6.5% (3 of 46; acadesine) (p = 0.006), with the principal benefit occurring over the first 30 days after MI. The acadesine benefit was similar among diverse subsets, and multivariable analysis confirmed these findings.
Conclusions: Acadesine is the first therapy proven to be effective for reducing the severity of acute post-reperfusion MI, substantially reducing the risk of dying over the 2 years after infarction.
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http://dx.doi.org/10.1016/j.jacc.2006.04.044 | DOI Listing |
Mol Cell Biochem
December 2024
Henan Key Laboratory of Medical Tissue Regeneration, Xinxiang Medical University, Henan Xinxiang, 453003, People's Republic of China.
To investigate the promoting effect of extracellular vesicles derived from myocardial cells (CM-EVs) on the reprogramming of cardiac fibroblasts (CFs) into cardiomyocyte-like cells (iCMs) and their therapeutic effect on myocardial infarction (MI) in rats. Cell experiments: The differential adhesion method was used to obtain Sprague Dawley (SD) suckling rat CFs and cardiomyocytes (CMs), while the ultracentrifugation method was used to obtain CM-EVs. Transmission electron microscopy and nanoparticle tracking technology were used to analyze and determine the morphology and particle size of CM-EVs.
View Article and Find Full Text PDFCardiovasc Revasc Med
December 2024
Department of Cardiology, Angiology, Haemostaseology and Medical Intensive Care, University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany. Electronic address:
Objective: The study investigates long-term outcomes of unselected inpatients undergoing invasive coronary angiography (CA) with and without diabetes mellitus type II (T2DM).
Background: Due to continual shifts in demographics and advancements in treating cardiovascular disease, there has been a notable evolution in the types of patients undergoing CA over the past decades. Comprehensive data on the extended outcomes of CA patients, both with and without concurrent T2DM, remains scarce.
Catheter Cardiovasc Interv
December 2024
Department of Interventional Cardiology, Lancashire Cardiac Centre, Blackpool, UK.
Background: In patients with ST-segment elevation myocardial infarction (STEMI) and multivessel coronary artery disease, the optimal management strategy for non-culprit lesions is a subject of ongoing debate. There has been an increasing use of physiology-guidance to assess the extent of occlusion in non-culprit lesions, and hence the need for stenting. Fractional flow reserve (FFR) is commonly used as a technique.
View Article and Find Full Text PDFCatheter Cardiovasc Interv
December 2024
Department of Cardiology, University Hospital Waterford, Waterford, Ireland.
Background: Acute myocardial infarction-related cardiogenic shock (AMICS) is a severe complication associated with exceedingly high mortality rates. While mechanical circulatory support (MCS) has emerged as a potential intervention, the evidence base for independent MCS use remains weak. In contrast, systematic reviews of observational studies have revealed significant mortality reduction when a combination of MCS was used: VA-ECMO in conjunction with a left ventricular (LV) unloading device (Impella or IABP).
View Article and Find Full Text PDFCatheter Cardiovasc Interv
December 2024
Department of Fetal, Neonatal and Cardiovascular Sciences, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy.
Kawasaki Disease (KD) is a systemic vasculitis that can lead to coronary artery aneurysms (CAA) in up to 10% of treated cases, significantly increasing the risk of thrombosis and acute myocardial infarction (AMI). While thrombolytic therapy is commonly used in adult coronary syndromes, its application in pediatric KD remains poorly studied. We report a 9-month-old infant with KD and giant CAA complicated by a subocclusive thrombus in the left anterior descending artery (LAD).
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