Background: Neutrophil gelatinase-associated lipocalin (NGAL) exists as monomers, homodimers, and NGAL/matrix metalloproteinase-9 (MMP-9) complexes. Circulating neutrophils are activated in ongoing disseminated intravascular coagulation (DIC); therefore, plasma NGAL levels are likely to be increased in DIC. We investigated the diagnostic performance of the plasma NGAL level in predicting acute kidney injury (AKI) in patients with DIC and determined the prognostic value of NGAL.
Methods: A total of 126 patients with suspected DIC were enrolled. The plasma free NGAL was analyzed with a point-of-care immunoassay. Plasma total NGAL and NGAL/MMP-9 complex levels were measured using commercial kits.
Results: Median free and total NGAL levels were markedly higher in patients with AKI than those without AKI. However, no significant difference in the NGAL/MMP-9 complex level was found between the groups. In patients without AKI, the plasma free and total NGAL levels were significantly higher in those with overt-DIC than in those without overt-DIC. Of note, the free NGAL level showed a significant prognostic value in DIC.
Conclusion: Plasma free and total NGAL proved to be powerful markers for AKI in DIC patients and plasma free NGAL also has a prognostic relevance in DIC patients without AKI.
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