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J Cardiol. 2012 Sep;60(3):168-73. doi: 10.1016/j.jjcc.2012.03.008. Epub 2012 May 31.

Clinical significance of the measurements of urinary liver-type fatty acid binding protein levels in patients with acute coronary syndrome.

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1
Department of Cardiovascular Medicine, Juntendo University School of Medicine, Tokyo, Japan.

Abstract

BACKGROUND:

Recently, much attention has been focused on cardio-renal interaction. Urinary liver-type fatty acid binding protein (U-L-FABP), which is produced in the proximal tubule by renal hypoxia and oxidative stress, has been identified as a useful marker for diagnosis of acute kidney disease and a predictor of future events in chronic kidney disease. However, the clinical significance of U-L-FABP measurements in patients with acute coronary syndrome (ACS) has not been completely evaluated.

METHODS AND RESULTS:

This study included 50 consecutive patients with ACS [37 with acute myocardial infarction (AMI) and 13 with unstable angina pectoris (UAP)] and 47 subjects without coronary artery disease (control group). U-L-FABP levels, urinary albumin (U-Alb), and other serum parameters were measured at admission and at 24 h after percutaneous coronary intervention.

RESULTS:

U-L-FABP levels in patients with AMI were significantly higher (p=0.0019), than in control subjects, while patients with UAP did not exhibit such an increase. U-L-FABP levels at admission were positively correlated with brain natriuretic protein levels (p=0.001) and duration of hospitalization (p=0.025). At follow-up angiography, patients with restenosis had significantly higher U-L-FABP (p=0.047) and U-Alb levels (p<0.0001) than those without restenosis. After a median follow-up of 42 months, U-L-FABP levels at second measurement in patients with major adverse cardiocerebrovascular events (MACCEs) were significantly higher than those in patients without MACCEs (p=0.028). After adjusting for confounding factors, high U-L-FABP levels at second measurement were found to be independent factors for MACCEs (p=0.019).

CONCLUSIONS:

These data suggest that patients with ACS, especially those with AMI, have high U-L-FABP levels, and that U-L-FABP measurements may be useful in identifying high-risk patients for future cardiovascular events after ACS.

PMID:
22658694
DOI:
10.1016/j.jjcc.2012.03.008
[Indexed for MEDLINE]
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