troponin


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troponin

[′trō·pə·nən]
(biochemistry)
A protein species located at specific stations every 36.5 nanometers on the actin helix in muscle sarcomere.
References in periodicals archive ?
In summary, use of the "generation 5", or high-sensitivity Troponin T presents a new, more efficient way to rule in or out the presence of myocardial necrosis in patients presenting with chest pain.
An increased risk of cardiovascular adverse events and cardiovascular death was seen in COPD patients in the highest quintile of plasma cardiac troponin concentrations at baseline, results of the analysis show.
Healthcare company Abbott (NYSE:ABT ) reported on Wednesday the receipt of the CE MARK for the first High Sensitive Troponin-I blood troponin test that can more accurately predict the chances of having a heart attack or other cardiac event potentially months to years in advance in people who otherwise appear healthy.
If the blood flow to the heart is blocked, the heart muscle begins to die in as little as 30 to 60 minutes and releases troponin into the bloodstream.
Cardiac troponin I (cTnl) and T (cTnT) have a high sequence homology across phyla and are sensitive and specific markers of myocardial damage; Homology between canine and feline genes and humans was 95 and 96 percent, respectively (Burgener et al., 2006; Wells and Sleeper, 2008).
cTn measured with newer generations of analytically highly sensitive cardiac troponin (hs-cTn) assays has been investigated in accelerated discharge protocols on the assumption that the newer assays have an improved ability to detect and quantify cardiomyocyte injury more quickly than previous generations of cTn assays (4).
Review of records revealed three different admissions to the coronary care unit over the previous 3 years for various noncardiac complaints and similar troponin elevations (all without a rise and fall).
Patients with postoperative hs-TnT levels of 20 to less than 65 ng/l had a 30-day mortality rate of 3.0%; with 65 to less than 1000 ng/l had a rate of 9.1%; 1000ng/l and onwards had a 30-day death rate of 29.6%.4 Previously, a research has associated fourth-generation troponin T levels with 30-day death risk in the non-cardiac surgery patients.5 However, the hs-cTnT assay has a lower decision limit (14 ng/l) for myocardial injury compared to the fourth generation assay's limit (30 ng/l).1
Material and Methods: Seventy five patients' plasma samples of high sensitivity troponin I levels, exceeding the value of 0.06ng/ml were analyzed.
Having high troponin levels increased risk 2.5-fold compared to those with lower troponin levels even after adjusting for risk factors such as age, diabetes, high blood pressure and a history of stroke or heart attack.
MONDAY, July 1, 2019 (HealthDay News) -- For patients presenting to the emergency department with symptoms suggestive of myocardial infarction, a tool developed to integrate high-sensitivity troponin I or T concentrations and dynamic change during serial sampling can estimate the probability of myocardial infarction and 30-day outcomes, according to a study published in the June 27 issue of the New England Journal of Medicine.
Troponin is released when the heart muscle has been damaged.