alexa Serum concentrations of myoglobin vs human heart-type cytoplasmic fatty acid-binding protein in early detection of acute myocardial infarction.


Journal of Oral Hygiene & Health

Author(s): Junnichi Ishii, Jianhua Wang

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We compared the diagnostic utility of serum concentrations of human heart-type cytoplasmic fatty acid-binding protein (H-FABPc), myoglobin, and their ratio for the early diagnosis of acute myocardial infarction (AMI) in 104 healthy volunteers and 165 patients at admission within 6 h of the onset of chest pain. The ROC curves of the H-FABPc [0.946, 95% confidence interval (CI) = 0.913–0.979] and myoglobin (0.895, 95% CI = 0.846–0.944) between patients with AMI and healthy volunteers were significantly greater than the area under the ratio of myoglobin to H-FABPc (0.823, 95% CI = 0.765–0.881). In 165 patients, the sensitivity (81.8%, 95% CI = 74.2–89.4%), specificity (86.4%, 95% CI = 78.1–94.6%), and predictive accuracy (83.6%, 95% CI = 78.0–89.3%) of H-FABPc >12 μg/L in diagnosing AMI were significantly higher than those of myoglobin, and were similar to those of the combination of H-FABPc >12 μg/L and the ratio ≤14. We conclude that H-FABPc is a more sensitive and specific marker than myoglobin for the early diagnosis of AMI, and that their ratio cannot give a clear advantage over the measurement of H-FABPc alone.

This article was published in Clinical Chemistry and referenced in Journal of Oral Hygiene & Health

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