Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A calcium-regulated protein in muscle tissue occurring in three subunits with tropomyosin.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A complex of three regulatory proteins that is integral to muscle contraction in skeletal and cardiac muscle, or any member of this complex. The level of troponin in the blood is often used as an indicator of heart damage.

Etymologies

tropo(myosin) + -in.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From tropomyosin. Coined by the Japanese researcher Setsuro Ebashi in 1963. (Wiktionary)

Examples

  • The test that's used conventionally is called troponin, which is just a protein that measures whether there's been death of heart cell, muscle cell tissue.

    CNN Transcript Oct 23, 2003

  • In the runners, levels of an enzyme called troponin, which rises in response to a strained heart and reduced flow of blood, were highest immediately after the marathon.

    TIME.com: Top Stories

  • It gave them echocardiograms and tested their blood for troponin, which is a protein found in cardiac muscle cells and is an indication of cardiovascular problems.

    Lange 2010

  • Age - and sex-adjusted incidence of non-ST-elevation myocardial infarction also declined since 2005, which followed widespread implementation of sensitive cardiac testing known as troponin I, which helps diagnose heart attacks.

    EurekAlert! - Breaking News

  • A new test based on these five proteins, says Van Eyk, could provide a more definitive answer to the question how serious is it? much earlier than existing assays for heart attack, such as tests for troponin proteins I and T. Van Eyk says commercially available tests for cardiac troponin, which is released into the blood in telltale patterns for heart attack, provide results too late to take preventive action, and after some damage has already occurred.

    RxPG News : Latest Medical, Healthcare and Research News

  • Cardiac biomarkers, such as troponin I and natriuretic peptides, are well-established for risk stratification of patients with acute coronary syndromes and heart failure.

    FinanzNachrichten.de: Aktuelle Nachrichten

  • Released into the blood when the heart is injured, cardiac protein biomarkers such as troponin-T and creatinine kinases, are the basis of medical tests of patients in which a heart attack is suspected.

    PhysOrg.com - latest science and technology news stories

  • Cardiac biomarkers, such as troponin-T and creatinine kinases are proteins used for heart attack diagnosis.

    PhysOrg.com - latest science and technology news stories

  • BBC ONE used the ESC / ACC 2000 definition of MI, namely troponin rise and ischemic symptoms, plus a "special-circumstances" definition for post-PCI (CK >

    theHeart.org

  • Then cardiologists found troponin, a cardiac biomarker that shows up in blood after a heart attack.

    New Test for Brain Injury on Horizon

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