نتایج جستجو برای: troponin
تعداد نتایج: 13375 فیلتر نتایج به سال:
We have cloned and characterized the troponin C gene, pat-10 of the nematode Caenorhabditis elegans. At the amino acid level nematode troponin C is most similar to troponin C of Drosophila (45% identity) and cardiac troponin C of vertebrates. Expression studies demonstrate that this troponin is expressed in body wall muscle throughout the life of the animal. Later, vulval muscles and anal muscl...
BACKGROUND The incidence and significance of troponin I release and its mechanism are unknown in severe trauma patients. The characteristics of this release were prospectively studied in such patients and correlated with presence of shock, existence of myocardial contusion, and outcome. METHODS During a 24-month period, serial electrocardiogram recordings and troponin I measurements were perf...
AIMS In patients with atrial fibrillation, minor troponin I elevation is regularly detected; however, the prognostic significance of this finding is unknown. We therefore sought to examine the prognostic value of elevated troponin I in patients with atrial fibrillation. METHODS AND RESULTS A prospective study was conducted analysing all consecutive patients admitted with atrial fibrillation i...
Introduction: Anthracyclines are one of the classes of chemotherapy drugs that are widely used to treat many types of cancers including breast cancer. Taking this class of medications has a significant relationship with cardiac dysfunction. N-acetylcysteine has antioxidant properties and may be effective in preventing cardiac dysfunctions. In this study, we investigated the effect of N-acetylc...
Introduction: Anthracyclines are one of the classes of chemotherapy drugs that are widely used to treat many types of cancers including breast cancer. Taking this class of medications has a significant relationship with cardiac dysfunction. N-acetylcysteine has antioxidant properties and may be effective in preventing cardiac dysfunctions. In this study, we investigated the effect of N-acetylc...
Methods for preparing troponin and tropomyosin from ethanol-extracted muscle are presented. Examination of these proteins by disc electrophoresis indicated that the troponin preparation is homogeneous. If precautions were taken to assure that the -SH groups of tropomyosin were not permitted to oxidize during preparation or electrophoresis, tropomyosin appeared to be nearly homogeneous. Traces o...
BACKGROUND The purpose of this study was to derive indices of reperfusion and non-reperfusion after acute myocardial infarction (AMI) from changes in serum concentrations of cardiac troponin T and to test the predictive value of these indices. METHODS The indices were derived from a retrospective analysis of changes in serum troponin T concentration in 71 patients given thrombolytic treatment...
Troponin C has a 14-residue alpha-helix at the extreme amino terminus (the N-helix) which is absent in calmodulin. To learn the significance of this region in troponin C, residues 1-14 were deleted using site-directed mutagenesis. Analysis of the mutant troponin C (delta 14-TnC) showed that deletion of the N-helix did not alter the secondary structure of troponin C. Like wild type troponin C, i...
OBJECTIVES The purpose of this study is to determine whether there is clinical significance to elevated troponin I in patients with suspected acute coronary syndromes (ACS) with non-critical angiographic coronary stenosis. BACKGROUND Elevation of troponin in patients admitted with ACS symptoms with non-critical coronary artery disease (CAD) may result from coronary atherothrombosis not eviden...
BACKGROUND Cardiac troponin testing is central to the diagnosis of acute myocardial infarction. We evaluated a sensitive troponin I assay for the early diagnosis and risk stratification of myocardial infarction. METHODS In a multicenter study, we determined levels of troponin I as assessed by a sensitive assay, troponin T, and traditional myocardial necrosis markers in 1818 consecutive patien...
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