Key result
Isoproterenol-induced myocardial injury in rats increased serum cTnI and cTnT, peaking at 2 hours (4.30 microg/L and 1.79 microg/L, respectively) and preceding maximal lesion severity.
Why the study?
Do serum cTnI and cTnT levels accurately reflect isoproterenol-induced myocardial injury in rats?
Population
Female Hanover Wistar rats
Comparison
Single intraperitoneal injection of isoproterenol vs Control levels (baseline)
Design
Preclinical
Follow-up
Up to 48 hours
Authors
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Supports troponin timing in rat cardiotoxicity models; leaves open human translation.
Do serum cTnI and cTnT levels accurately reflect isoproterenol-induced myocardial injury in rats?
Serum cTnI and cTnT are sensitive and specific biomarkers for detecting isoproterenol-induced myocardial injury in rats, with peak levels preceding maximal histologic lesion severity.
York et al. (2007) studied Isoproterenol-induced cardiac injury. Isoproterenol (ISO) vs. Control/baseline was evaluated on Serum cardiac troponin I (cTnI) and cardiac troponin T (cTnT) levels. Isoproterenol-induced myocardial injury in rats increased serum cTnI and cTnT, peaking at 2 hours (4.30 microg/L and 1.79 microg/L, respectively) and preceding maximal lesion severity.
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