We compared a rapid, point-of-care multimarker protocol with a single and serial troponin I (TnI)-only protocol in 5,244 patients admitted to the emergency department with chest pain. The diagnosis of acute myocardial infarction (AMI) was based on a doubling myoglobin level accompanied by at least a 50% increase in the creatine kinase (CK)-MB level with no detectable TnI; a doubling of myoglobi...

We have isolated and sequenced a full-length cDNA clone of rat cardiac troponin I (TnI). The amino acid sequence of rat cardiac TnI is highly similar to that of other mammalian species in the portion of the molecule (residues 33-210) that is also homologous to skeletal muscle TnI isoforms. In contrast, a lower degree of similarity is present in the cardiac TnI-specific amino terminal extension ...

INTRODUCTION High-sensitivity cardiac troponin I(hs-TnI) and T levels(hs-TnT) are sensitive biomarkers of cardiomyocyte turnover or necrosis. Prior studies of the predictive role of hs-TnT in type 2 diabetes mellitus(T2DM) patients have yielded conflicting results. This study aimed to determine whether hs-TnI, which is detectable in a higher proportion of normal subjects than hsTnT, is associat...

BACKGROUND Sudden cardiac death (SCD) risk stratification is the most important preventive action in patients with hypertrophic cardiomyopathy (HCM). The identification of the ischemia biomarker high sensitive troponin I (hs-TnI) role for this arrhythmic disease may provide additional information for SCD risk stratification. The aim of the study was to compare echocardiographic parameters (prog...

The aim of this study was to assess the relationship between biomarkers (high-sensitive troponin I [hs-TnI], N-Terminal probrain natriuretic peptide [NT-proBNP]) and calculated 5-year percentage risk score of sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM). Methods. In 46 HCM patients (mean age 39 ± 7 years, 24 males and 22 females), echocardiographic examination, including the ...

report that protein kinase D (PKD), a serine kinase, phosphorylates the cardiac thin filament protein, troponin I (TnI). These investigators performed a detailed and complete set of experiments, initially noting the association of TnI and PKD, and then mapping the sites that PKD phosphorylates, Ser22 and Ser23. PKD treatment of myocytes was further demonstrated to result in desensitization of t...

Background: Acute myocardial infarction (MI) accounts for one third of deaths. Cardiac troponin I (TnI) is a reliable biomarker of cardiac muscle tissue injury and is employed in the early diagnosis of MI.Objectives: In this study, a molecular method is introduced to early diagnosis of MI by rapid detection of TnI.Materials and Methods: The detection method was based on electrochemical aptasens...

BACKGROUND Troponin I (TnI) is frequently elevated in critical illness, but its interpretation is unclear. Our primary objectives in this study were to evaluate whether TnI is associated with hospital mortality and if this association persists after adjusting for potential confounders. We also aimed to ascertain whether addition of TnI to the Acute Physiological and Chronic Health Evaluation II...