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2015 ; 10
(4
): e0125282
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Combined biomarker analysis for risk of acute kidney injury in patients with
ST-segment elevation myocardial infarction
#MMPMID25853556
Tung YC
; Chang CH
; Chen YC
; Chu PH
PLoS One
2015[]; 10
(4
): e0125282
PMID25853556
show ga
BACKGROUND: Acute kidney injury (AKI) complicating ST-segment elevation
myocardial infarction (STEMI) increases subsequent morbidity and mortality. We
combined the biomarkers of heart failure (HF; B-type natriuretic peptide [BNP]
and soluble ST2 [sST2]) and renal injury (NGAL [neutrophil gelatinase-associated
lipocalin] and cystatin C) in predicting the development of AKI in patients with
STEMI undergoing primary percutaneous coronary intervention (PCI). METHODS AND
RESULTS: From March 2010 to September 2013, 189 STEMI patients were sequentially
enrolled and serum samples were collected at presentation for BNP, sST2, NGAL and
cystatin C analysis. 37 patients (19.6%) developed AKI of varying severity within
48 hours of presentation. Univariate analysis showed age, Killip class ?2,
hypertension, white blood cell counts, hemoglobin, estimated glomerular
filtration rate, blood urea nitrogen, creatinine, and all the four biomarkers
were predictive of AKI. Serum levels of the biomarkers were correlated with risk
of AKI and the Acute Kidney Injury Network (AKIN) stage and all significantly
discriminated AKI (area under the receiver operating characteristic [ROC] curve:
BNP: 0.86, sST2: 0.74, NGAL: 0.75, cystatin C: 0.73; all P < 0.05). Elevation of
?2 of the biomarkers higher than the cutoff values derived from the ROC analysis
improved AKI risk stratification, regardless of the creatine level (creatinine <
1.24 mg/dL: odds ratio [OR] 11.25, 95% confidence interval [CI] 1.63-77.92, P =
0.014; creatinine ? 1.24: OR 15.0, 95% CI 1.23-183.6, P = 0.034). CONCLUSIONS: In
this study of STEMI patients undergoing primary PCI, the biomarkers of heart
failure (BNP and sST2) and renal injury (NGAL and cystatin C) at presentation
were predictive of AKI. High serum levels of the biomarkers were associated with
an elevated risk and more advanced stage of AKI. Regardless of the creatinine
level, elevation of ?2 of the biomarkers higher than the cutoff values indicated
a further rise in AKI risk. Combined biomarker approach may assist in risk
stratification of AKI in patients with STEMI.