troponin I ( )n. A subunit of troponin found in muscle and cartilage that inhibits the formation of blood vessels and is under investigation as a potential cancer therapy. |
troponin I
Cardiology A contractile protein that ↑ in serum after myocardial necrosis; it is a sensitive and specific marker of acute MI, and better than CK-MB as a cardiac injury marker Indications Acute, recent, or perioperative MI,
cardiac contusion, heart allograft rejection, assessment of side-branch occlusion during coronary revascularization procedures or thrombolysis. See Myocardial infarction. Cf Surrogate marker.
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