Abstract
Background: Acute kidney injury (AKI) develops in 10% of patients after surgical abdominal aortic aneurysm (AAA) repair. Neutrophil gelatinase-associated lipocalin (NGAL) is a predictor of AKI and Endothelial Progenitor Cells (EPCs) represent a potential repair mechanism for vascular lesions. We evaluated the diagnostic power of serum (s) and urine (u) NGAL in detecting a possible event of AKI in patients undergoing surgical treatment for AAA repair. We also investigated the influence of vascular injury on EPCs.
Methods: We examined 50 patients who underwent open AAA repair. Blood and urine was collected preoperatively and every hour after surgery until 8 h to quantify sNGAL, uNGAL and circulating EPCs. AKI, was defined as a 25% decrease in eGFR compared with baseline values.
Results: There was an inverse correlation between eGFR, sNGAL and uNGAL, while a direct correlation between sNGAL APACHE II Score and EPCs was found. At receiver operating characteristic (ROC) analysis, sNGAL and uNGAL showed a very good diagnostic profile. Kaplan Meier curves showed that NGAL is a highly sensitive predictor of incidence of AKI. Univariate followed by multivariate Cox proportional hazard regression analysis showed that uNGAL and sNGAL predicted AKI independently of other potential confounders, including eGFR and APACHE II Score. Patients had at baseline and after surgical stress a significantly higher number of EPCs than control group.
Conclusions: NGAL represents an independent renal predictor of incidence of AKI. EPCs reflect the degree of vascular damage and could be considered as an indicator of disease with a reparative-regenerative vascular-endothelial function.
Keywords: Acute renal injury, aortic aneurysm repair, critical care, early biomarkers, endothelial progenitor cells, neutrophil gelatinase-associated lipocalin.
Current Vascular Pharmacology
Title:Neutrophil Gelatinase-Associated Lipocalin (NGAL) and Endothelial Progenitor Cells (EPCs) Evaluation in Aortic Aneurysm Repair
Volume: 11 Issue: 6
Author(s): Antonio Lacquaniti, Massimiliano Giardina, Silvia Lucisano, Roberto Messina, Antoine Buemi, Claudia D. Risitano, Valeria Chirico, Michele Buemi and Antonio David
Affiliation:
Keywords: Acute renal injury, aortic aneurysm repair, critical care, early biomarkers, endothelial progenitor cells, neutrophil gelatinase-associated lipocalin.
Abstract: Background: Acute kidney injury (AKI) develops in 10% of patients after surgical abdominal aortic aneurysm (AAA) repair. Neutrophil gelatinase-associated lipocalin (NGAL) is a predictor of AKI and Endothelial Progenitor Cells (EPCs) represent a potential repair mechanism for vascular lesions. We evaluated the diagnostic power of serum (s) and urine (u) NGAL in detecting a possible event of AKI in patients undergoing surgical treatment for AAA repair. We also investigated the influence of vascular injury on EPCs.
Methods: We examined 50 patients who underwent open AAA repair. Blood and urine was collected preoperatively and every hour after surgery until 8 h to quantify sNGAL, uNGAL and circulating EPCs. AKI, was defined as a 25% decrease in eGFR compared with baseline values.
Results: There was an inverse correlation between eGFR, sNGAL and uNGAL, while a direct correlation between sNGAL APACHE II Score and EPCs was found. At receiver operating characteristic (ROC) analysis, sNGAL and uNGAL showed a very good diagnostic profile. Kaplan Meier curves showed that NGAL is a highly sensitive predictor of incidence of AKI. Univariate followed by multivariate Cox proportional hazard regression analysis showed that uNGAL and sNGAL predicted AKI independently of other potential confounders, including eGFR and APACHE II Score. Patients had at baseline and after surgical stress a significantly higher number of EPCs than control group.
Conclusions: NGAL represents an independent renal predictor of incidence of AKI. EPCs reflect the degree of vascular damage and could be considered as an indicator of disease with a reparative-regenerative vascular-endothelial function.
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Lacquaniti Antonio, Giardina Massimiliano, Lucisano Silvia, Messina Roberto, Buemi Antoine, Risitano D. Claudia, Chirico Valeria, Buemi Michele and David Antonio, Neutrophil Gelatinase-Associated Lipocalin (NGAL) and Endothelial Progenitor Cells (EPCs) Evaluation in Aortic Aneurysm Repair, Current Vascular Pharmacology 2013; 11 (6) . https://dx.doi.org/10.2174/157016111106140128124607
DOI https://dx.doi.org/10.2174/157016111106140128124607 |
Print ISSN 1570-1611 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6212 |
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