title: Predictive Value of Neutrophil Gelatinase-Associated Lipocalin for Contrast-Induced Acute Kidney Injury After Cardiac Catheterization: A Meta-analysis.
abstract: Neutrophil gelatinase-associated lipocalin (NGAL) accumulates in cortical tubules in acute kidney injury (AKI) patients, with its levels associated with serum creatinine. However, the predictive value of NGAL level for contrast-induced acute kidney injury (CI-AKI) remains unclear.
  
  
  
  A total of 1520 patients from 14 relevant studies retrieved from PUBMED, MEDLINE, EMBASE, Web of Science, ClinicalTrials.gov, Cochrane Library, and Google Scholar from the inception to November 2014 and 15 data sets were included.
  
  
  
  The pooled area under the curve of receiver operating characteristic analysis of NGAL for predicting CI-AKI was 0.93, and the diagnostic odds ratio, sensitivity, specificity, and median cutoff value were 42.54, 83.98%, 89.03%, and 52.4 ng/mL, respectively. Urine and serum/plasma NGAL levels performed similarly well in predicting CI-AKI, with somewhat better results obtained when the NGAL level was determined within 4 hours after exposure to contrast medium.
  
  
  
  Patient nationality and definition of CI-AKI were important factors that affected the efficiency of NGAL level in predicting CI-AKI. Urine and serum/plasma NGAL levels appear to be promising biomarkers for early detection of CI-AKI after percutaneous coronary intervention or coronary angiography.
authors: Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.
authors: Kun
authors: K
authors: Wang
authors: Department of Biostatistics, School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, Guangdong, China.
authors: Chong-Yang
authors: CY
authors: Duan
authors: Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.
authors: Jun
authors: J
authors: Wu
authors: Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.
authors: Yong
authors: Y
authors: Liu
authors: Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.
authors: Wei-Jie
authors: WJ
authors: Bei
authors: Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China.
authors: Ji-Yan
authors: JY
authors: Chen
authors: Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China. Electronic address: he_peng_cheng@aliyun.com.
authors: Peng Cheng
authors: PC
authors: He
authors: Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China. Electronic address: lyh0718@126.com.
authors: Yuan-Hui
authors: YH
authors: Liu
authors: Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China. Electronic address: tanning100@126.com.
authors: Ning
authors: N
authors: Tan
mesh_terms: D058186:Acute Kidney Injury / Q000139:chemically induced* / Q000175:diagnosis*; D015415:Biomarkers / Q000097:blood / Q000652:urine; D006328:Cardiac Catheterization; D003287:Contrast Media / Q000009:adverse effects*; D006801:Humans; D000071068:Lipocalin-2 / Q000097:blood* / Q000652:urine*; D011237:Predictive Value of Tests; D012680:Sensitivity and Specificity; D013997:Time Factors
chemical_list: D015415:Biomarkers; D003287:Contrast Media; D000071068:Lipocalin-2