ABSTRACT
Among the cardiovascular diseases (CVD), acute myocardial infarction (AMI) is currently considered the most common cause of death and disability worldwide. Several laboratory tests have been developed for the detection of cardiac injury, including troponins that are considered the gold standard marker (surrogate biomarker) of myocardial injury. The high specificity of troponin for cardiomyocyte necrosis is related to a single unique peptide sequence present in troponin at the cardiac muscle. As a result, studies are currently focused on the development of troponin (hs-cTnI) determination tests with high diagnostic sensitivity value. These diagnostic tests aim to detect increasingly lower serum concentrations of cTnI biomarkers, from the detection of peptide fragments that are released after structural biochemical changes. This article discusses the differences between troponin fragments immunoreactivity to the development of cTnI determination tests, such as the high-sensitivity tests, which arise with the proposal of guaranteeing greater efficiency in the AMI associated diagnosis.
Key words:
acute coronary syndrome; troponin I; immunodominant epitopes