[Heart-type fatty acid-binding protein detection for early diagnosis of acute coronary syndrome].
OBJECTIVE
To estimate the reliability of heart-type fatty acid-binding protein (H-FABP) for identifying acute coronary syndrome (ACS) in the early stage of chest pain onset.


METHODS
This investigation was conducted based on a small population consisting of 40 healthy individuals, 19 established AMI patients and 20 unstable angina pectoris (UAP) patients. Serum H-FABP concentrations were measured in these subjects by sandwich ELISA, and receiver operating characteristics (ROC) curves for H-FABP for diagnosing AMI and UAP against normal subjects were then generated respectively. The areas under curve (AUCs) were calculated, and 0.5 was defined as the critical value of AUC to evaluate the diagnostic ability.


RESULTS
The concentrations of H-FABP in healthy individuals, AMI patients and UAP patients were 1.29+/-0.64, 24.45+/-32.40 and 1.95+/-3.11 ng/ml, respectively; AUC (AMI) and AUC UAP were 0.978 (95%CI: 0.948-1.000) and 0.503 (95% CI: 0.334-0.671) respectively, and the former was significantly greater than 0.5.


CONCLUSIONS
In the early stage of chest pain onset H-FABP detection is sufficient in distinguishing AMI patients from healthy individuals, but not capable of distinguishing UAP patients from healthy individuals. H-FABP may be used as a diagnostic biochemical marker in the early stage of AMI.
Center of Laboratory Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.
Peng
P
Zhang
Qian
Q
Wang
Lei
L
Zheng
Fang-yin
FY
Zeng
Yu-rong
YR
Qiu
D054058:Acute Coronary Syndrome / Q000097:blood / Q000175:diagnosis*; D000328:Adult; D019540:Area Under Curve; D015415:Biomarkers / Q000097:blood*; D042241:Early Diagnosis; D004797:Enzyme-Linked Immunosorbent Assay; D050556:Fatty Acid-Binding Proteins / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D012372:ROC Curve; D012680:Sensitivity and Specificity
D015415:Biomarkers; D050556:Fatty Acid-Binding Proteins