Objectives. The aim of this study was to investigate the occurrence of myocardial injury in critically ill children through assessment of cardiac troponin T levels and whether levels are associated with disease severity and myocardial dysfunction measured by echocardiography. Methods. Over a 6-month period, this case control study included 50 patients admitted to Pediatric Intensive Care Unit o...

AIM Cardiac troponins and natriuretic peptides are established for risk stratification in light-chain amyloidosis. Data on cardiac biomarkers in transthyretin amyloidosis (ATTR) are lacking. METHODS AND RESULTS Patients (n = 1617) with any of the following cardiac biomarkers, BNP (n = 1079), NT-proBNP (n = 550), troponin T (n = 274), and troponin I (n = 108), available at baseline in the Tran...

1. Cooper LT, Jr. Myocarditis. N Engl J Med 2009;360:1526-38. 2. Kadota S, Takeuchi Y, Izuhara M, et al. The importance of serial cardiac troponin measurement for evaluating the response to immunosuppressive therapy for myocarditis. J Cardiol 2008;52:154-8. 3. Giannoni A, Giovannini S, Clerico A. Measurement of circulating concentrations of cardiac troponin I and T in healthy subjects: a tool f...

BACKGROUND Remote ischemic preconditioning (RIPC) is the process of inducing brief ischemia in a tissue to prevent ischemic damage in another. This preconditioning can be induced simply by inflating a blood pressure cuff on a limb. Previous randomized controlled trials (RCT) have suggested that RIPC may infer myocardial protection during open cardiac surgery. One method of assessing the degree ...

Chest pain is one of the most common presenting symptoms in patients attending the emergency department; yet, less than one in five patients receive a final diagnosis of acute myocardial infarction. In patients without ST segment elevation, early exclusion of acute coronary syndrome has the potential to reduce healthcare expenditure in a population with significant resource implications. Previo...

High-sensitivity cardiac troponin T is a useful tool for diagnosing myocardial ischemia. However, its role in the prognosis of patients with acute myocardial infarction has not been studied. Here, the prognostic value of high-sensitivity cardiac troponin T for patients with acute myocardial infarction was investigated. The concentrations of high-sensitivity cardiac troponin T, other clinical ch...

BACKGROUND In patients with acute coronary syndromes, it is desirable to identify a sensitive serum marker that is closely related to the degree of myocardial damage, provides prognostic information, and can be measured rapidly. We studied the prognostic value of cardiac troponin I levels in patients with unstable angina or non-Q-wave myocardial infarction. METHODS In a multicenter study, blo...

The contiguous inhibitory and regulatory regions of troponin I in the heterotrimeric troponin complex play a critical role in Ca(2+) activation of striated muscle. Knowledge of the structure of this critical region within the complex will enhance efforts toward understanding regulatory mechanisms. Toward this goal, we have used simulated annealing to study the structure of the inhibitory and re...

1. Jaffe AS, Apple FS. High-sensitivity cardiac troponin: hype, help, and reality. Clin Chem 2010;56:342–4. 2. Keller T, Zeller T, Peetz D, Tzikas S, Roth A, Czyz E, et al. Sensitive troponin I assay in early diagnosis of acute myocardial infarction. N Engl J Med 2009;361:868–77. 3. Reichlin T, Hochholzer W, Bassetti S, Steuer S, Stelzig C, Hartwiger S, et al. Early diagnosis of myocardial infa...

We focus here on the modulation of thin filament activity by cardiac troponin I phosphorylation as an integral and adaptive mechanism in cardiac homeostasis and as a mechanism vulnerable to maladaptive response to stress. We discuss a current concept of cardiac troponin I function in the A-band region of the sarcomere and potential signaling to cardiac troponin I in a network involving the ends...