High-throughput targeted proteomics discovery approach and spontaneous reperfusion in ST-segment elevation myocardial infarction

ConclusionsSpontaneous reperfusion prior to pPCI in STEMI was associated with a lower risk of adverse clinical events. These exploratory data from a targeted discovery proteomics platform identifies novel proteins across diverse, yet complementary, pathobiological axes that show promise in providing mechanistic insights into spontaneous reperfusion in STEMI.Condensed abstractSpontaneous reperfusion has been established with improved STEMI outcomes, yet its pathobiology is unclear and appears to involve diverse physiological processes. Using a 91-biomarker high-throughput proteomics platform, we studied 683 STEMI patients in the APEX AMI trial (290 had core laboratory–adjudicated pre-PCI TIMI 2/3 flow) and identified 52 proteins that univariably associate with spontaneous reperfusion. Cluster analysis identified 26 biomarker clusters (explaining 72% of total variance), 13 of which, after multivariable adjustment, were significantly associated with spontaneous reperfusion. Four proteins (kallikrein-6, matrix extracellular phosphoglycoprotein, matrix mettaloproteinaise-3, and elafin) across diverse, yet complementary, pathways appear to be associated most strongly with spontaneous reperfusion.
Source: American Heart Journal - Category: Cardiology Source Type: research

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AbstractThe 30-day readmission rates, predictors, and outcomes for acute heart failure (AHF) patients are well published, but data beyond 30  days and the association between readmission-free period (RFP) and in-hospital readmission-related mortality remain unknown. We queried the National Readmission Database to analyze comparative outcomes of AHF. Patients were divided into three groups based on their RFP: group 1 (1–30 days), grou p 2 (31–90 days), and group 3 (91–275 days). AHF cases and clinical variables were identified using ICD-9 codes. The primary outcome was in-hospital morta...
Source: Heart Failure Reviews - Category: Cardiology Source Type: research
Background Diabetes mellitus predicts poorer outcomes in patients with acute coronary syndrome (ACS), but the magnitude of this association in patients at older ages remains controversial. Methods Data were extracted from the Codi Infart database. All consecutive patients with diagnosis of ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) between 2010 and 2015 were included. We assessed the impact of diabetes mellitus on 30-day and one-year mortality in patients aged less than and at least 75 years. Results A total of 12 792 cases were registered, of whom...
Source: Coronary Artery Disease - Category: Cardiology Tags: Myocardial Infarction/Cardiogenic Shock Source Type: research
ConclusionSpontaneous reperfusion prior to pPCI in STEMI was associated with a lower risk of adverse clinical events. These exploratory data from a targeted discovery proteomics platform identifies novel proteins across diverse, yet complementary, pathobiological axes that show promise in providing mechanistic insights into spontaneous reperfusion in STEMI.Condensed abstractSpontaneous reperfusion has been established with improved STEMI outcomes, yet its pathobiology is unclear and appears to involve diverse physiological processes. Using a 91-biomarker high-throughput proteomics platform, we studied 683 STEMI patients in...
Source: American Heart Journal - Category: Cardiology Source Type: research
ConclusionsIn this observational analysis of STEMI patients who underwent primary percutaneous coronary intervention, ticagrelor was associated with improved outcomes compared with clopidogrel and prasugrel. An appropriately powered randomized trial is needed to confirm these findings.RésuméContexteIl n’existe pas d’analyse robuste comparant les inhibiteurs P2Y12 à prise orale (clopidogrel, prasugrel et ticagrélor) chez les patients ayant subi un infarctus du myocarde avec élévation du segment ST (STEMI) traités par une intervention coronaire percutanée (I...
Source: Canadian Journal of Cardiology - Category: Cardiology Source Type: research
Authors: Alsadat N, Hyun K, D'Souza M, Chew D, Weaver J, Juergens C, Kritharides L, Hammett C, Brieger D Abstract BACKGROUND: Approximately 50% of patients undergoing primary percutaneous coronary intervention (PCI) for ST-elevation myocardial infarction (STEMI) have multivessel coronary disease (MVD). Evidence on the best PCI approach for these patients is conflicting. The aim of this study is to examine Australian data from the CONCORDANCE registry to describe the practice and outcomes of patients receiving multivessel vs culprit-only PCI. METHODS: Two cohorts were constructed from MVD-STEMI patients undergoi...
Source: The Journal of Invasive Cardiology - Category: Cardiology Tags: J Invasive Cardiol Source Type: research
AbstractAimsTo evaluate sex ‐specific disparities in acute kidney injury (AKI) complicating acute myocardial infarction‐related cardiogenic shock (AMI‐CS) in the United States.Methods and resultsThis was a retrospective cohort study from 2000 to 2014 from the National Inpatient Sample (20% sample of all hospitals in the United States). Patients>18  years admitted with a primary diagnosis of AMI and concomitant CS that developed AKI were included. The endpoints of interest were the prevalence, trends, and outcomes of men and women with AKI in AMI‐CS. Multivariable hierarchical logistic regression was used to...
Source: ESC Heart Failure - Category: Cardiology Authors: Tags: Short Communication Source Type: research
Early initiation of mechanical circulatory support improves survival in patients with acute myocardial infarction (MI) complicated by refractory cardiogenic shock. In contrast, the potential benefits of mechanical support in MI patients without overt cardiogenic shock remain unclear. In patients with acute anterior ST elevation MI (STEMI), early mechanical support through intra-aortic balloon counterpulsation (IABC) prior to percutaneous coronary intervention (PCI) did not affect infarct size. However, 6  months after the acute event, the exploratory composite endpoint of time to death, shock or new or worsening heart fa...
Source: International Journal of Cardiology - Category: Cardiology Authors: Tags: Editorial Source Type: research
ConclusionsIn this observational analysis of STEMI patients undergoing PPCI, ticagrelor was associated with improved outcomes compared to clopidogrel and prasugrel. An appropriately powered randomized trial is needed to confirm these findings.
Source: Canadian Journal of Cardiology - Category: Cardiology Source Type: research
Abstract BACKGROUND: Despite the increasing number of patients after percutaneous coronary intervention (PCI) requiring coronary artery bypass grafting (CABG), studies on the impact of these procedures on surgical revascularisation outcomes are sparse. Furthermore, advances in cardiology require reassessment of their potential prognostic significance. AIM: We sought to assess the influence of previous PCI on CABG outcomes. METHODS: A total of 211 consecutive patients scheduled for CABG were enrolled into this prospective study. Patients after PCI (group 1, n = 99) were compared with subjects with no hist...
Source: Kardiologia Polska - Category: Cardiology Authors: Tags: Kardiol Pol Source Type: research
Conclusion of first report:In patients with anterior Killip class II or less ST-segment –elevation myocardial infarction undergoing primary percutaneous coronary intervention, early intravenous metoprolol before reperfusion reduced infarct size and increased left ventricular ejection fraction with no excess of adverse events during the first 24 hours after STEMI.Conclusion of 2nd report: In patients with anterior Killip class  ≤II STEMI undergoing pPCI, early IV metoprolol before reperfusion resulted in higher long-term LVEF, reduced incidence of severe LV systolic dysfunction and ICD indications, and fe...
Source: Dr. Smith's ECG Blog - Category: Cardiology Authors: Source Type: blogs
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