Controversy exists as to the clinical roles and relative specificities of cardiac troponin T or I in patients with unstable angina pectoris (UAP). We measured troponin T and I levels on admission in 123 patients with UAP. Of the 107 patients with normal creatine kinase during the first 24 hours, troponin T and I were elevated in 14 and 13 patients, respectively. At 30 days, 5 of 14 patients (36...

I n 2000, the European Society of Cardiology and the American College of Cardiology presented new diagnostic criteria for myocardial infarction (MI) which placed a greater emphasis on cardiac markers by stating that any elevation in cardiac troponin T (cTnT) or cardiac troponin I (cTnI) above the 99th centile of normal was sufficient to diagnose a MI. Recent studies since then have shown that t...

We describe an improved procedure using a standard microplate immunoassay reader to measure the concentration of troponin T in human serum. We also describe an immunoassay for troponin I in serum. Only 160 microliters of serum are needed for a single analysis of each troponin. For comparison, creatine kinase MB mass analysis in serum was performed with a commercial luminometric method. From 95 ...

Objective: Exercise and nutrition as life style modification strategies for the prevention and control of diabetes are considered. The aim of present study was to assess the effects of saffron consumption and aerobic exercises on serum levels of Heart-type fatty acid binding protein (HFABP) and Troponin T in type2 diabetes (T2DM) patients. Materials and Methods: This study was a quasi-experime...

OBJECTIVE To investigate the intraoperative release of troponin T during uncomplicated coronary artery surgery and to determine its relation to ischaemic time and to recovery of left ventricular function and oxidative metabolism. DESIGN A prospective observational study. SETTING Cardiac surgical unit in a tertiary referral centre. METHODS Troponin T, creatine kinase, and lactate were anal...

We have investigated the binding of bepridil to calcium-saturated cardiac troponin C in a cardiac troponin C/troponin I complex. Nuclear magnetic resonance spectroscopy and [(15)N,(2)H]cardiac troponin C permitted the mapping of bepridil-induced amide proton chemical shifts. A single bepridil-binding site in the regulatory domain was found with an affinity constant of approximately 140 microM(-...

Cardiac phospholipid-sensitive Ca2+-dependent protein kinase phosphorylated cardiac troponin inhibitory subunit (troponin I) and tropomyosin-binding subunit (troponin T), present either as the free form or as the troponin-tropomyosin complex. Exhaustive phosphorylation of troponin I and of troponin T revealed that 1.7 and 2 mol of phosphate was incorporated/mol of the subunits respectively. Cyc...

BACKGROUND Changes in high sensitivity cardiac troponin-T (hs-cTnT) concentrations may reflect either acute myocardial injury or biological variation. Distinguishing between these entities is essential to accurate diagnosis, however, the biological variation of hs-cTnT in dialysis population is currently unknown. We sought to estimate the within- and between-person coefficients of variation of ...