Protein complex
Troponin Purpose to detect myocardial damage
Ribbon representation of the human cardiac troponin core complex (52 kDa core) in the calcium-saturated form. Blue = troponin C; green = troponin I; magenta = troponin T.[ 1]
Troponin , or the troponin complex , is a complex of three regulatory proteins (troponin C , troponin I , and troponin T ) that are integral to muscle contraction [ 2] in skeletal muscle and cardiac muscle , but not smooth muscle . Measurements of cardiac-specific troponins I and T are extensively used as diagnostic and prognostic indicators in the management of myocarditis , myocardial infarction and acute coronary syndrome .[ 3] Blood troponin levels may be used as a diagnostic marker for stroke or other myocardial injury that is ongoing, although the sensitivity of this measurement is low.[ 4] [ 5] [ 6] [ 7] [ 8]
^ PDB : 1J1E ; Takeda S, Yamashita A, Maeda K, Maeda Y (2003). "Structure of the core domain of human cardiac troponin in the Ca(2+)-saturated form". Nature . 424 (6944): 35–41. Bibcode :2003Natur.424...35T . doi :10.1038/nature01780 . PMID 12840750 . S2CID 2174019 . ; rendered with PyMOL
^ "troponin" at Dorland's Medical Dictionary
^ "Troponin - Understand the Test & Your Results" . labtestsonline.org . Retrieved 2019-04-18 .
^ Strandberg, Love S.; Roos, Andreas; Holzmann, Martin J. (2021-01-01). "Stable high-sensitivity cardiac troponin T levels and the association with frailty and prognosis in patients with chest pain" . American Journal of Medicine Open . 1–6 : 100001. doi :10.1016/j.ajmo.2021.100001 . ISSN 2667-0364 . PMC 11256254 . S2CID 244507759 .
^ A Roos, U Sartipy, R Ljung, MJ. Holzmann
Relation of chronic myocardial injury and Non-ST-Segment elevation myocardial infarction to mortality
Am J Cardiol, 122 (2018), pp. 1989-1995,
^ A Roos, N Bandstein, M Lundbäck, O Hammarsten, R Ljung, MJ. Holzmann
Stable high-sensitivity cardiac troponin T levels and outcomes in patients with chest pain
J Am Coll Cardiol, 70 (18) (2017), pp. 2226-2236,
^ Thygesen, Kristian; Alpert, Joseph S.; Jaffe, Allan S.; Chaitman, Bernard R.; Bax, Jeroen J.; Morrow, David A.; White, Harvey D. (2018-10-30). "Fourth Universal Definition of Myocardial Infarction (2018)" . Journal of the American College of Cardiology . 72 (18): 2231–2264. doi :10.1016/j.jacc.2018.08.1038 . hdl :10044/1/73052 . ISSN 0735-1097 . PMID 30153967 . S2CID 52110825 .
^ Kerr, Gillian; Ray, Gautamananda; Wu, Olivia; Stott, David J.; Langhorne, Peter (2009). "Elevated troponin after a stroke: a systematic review" . Cerebrovascular Diseases . 28 (3): 220–226. doi :10.1159/000226773 . ISSN 1421-9786 . PMID 19571535 .