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Molecular tissue changes in early myocardial ischemia: from pathophysiology to the identification of new diagnostic markers

Published in International Journal of Legal Medicine. 2018, vol. 132, no. 2, p. 425-438
Abstract Diagnosing early myocardial ischemia (the initial 4 to 6 h after interruption of blood flow to part of the myocardium) remains a challenge for clinical and forensic pathologists. Several immunohistochemical markers have been proposed for improving postmortem detection of early myocardial ischemia; however, no single marker appears to be both sufficiently specific as well as sensitive. This review summarizes the diverse categories of molecular tissue markers that have been investigated in human autopsy samples with acute myocardial infarction as well as in the well-established and widely used in vivo animal model of early myocardial ischemia (permanent ligation of the coronary artery). Recently identified markers appearing during the initial 2 h of myocardial ischemia are highlighted. Among them, only six were tested for specificity (C5b-9, hypoxia-inducible factor 1-alpha, vascular endothelial growth factor, heart fatty acid binding protein, connexin 43, and JunB). Despite the discovery of several potentially promising markers (in terms of early expression and specificity), many of them remain to be tested and validated for application in routine diagnostics in clinical and forensic pathology. In particular, research investigating the postmortem stability of these markers is required before any might be implemented into routine diagnostics. Establishing a standardized panel of immunohistochemical markers may be more useful for improving sensitivity and specificity than searching for a single marker.
Keywords AnimalsApoptosisBiomarkers/metabolismDeath, Sudden, Cardiac/etiologyForensic MedicineGenetic PleiotropyHumansInflammation/metabolismMyocardial Ischemia/diagnosis/metabolismMyocardium/metabolismMyocytes, Cardiac/pathology
PMID: 29362873
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Research group Groupe Fracasso Tony (959)
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ALJAKNA KHAN, Aleksandra, FRACASSO, Tony, SABATASSO, Sara. Molecular tissue changes in early myocardial ischemia: from pathophysiology to the identification of new diagnostic markers. In: International Journal of Legal Medicine, 2018, vol. 132, n° 2, p. 425-438. doi: 10.1007/s00414-017-1750-z https://archive-ouverte.unige.ch/unige:111369

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Deposited on : 2018-11-23

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