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High Throughput Sequential ELISA for Validation of Biomarkers of Acute Graft-Versus-Host Disease
Published on: October 31, 2012
Recipient vascular endothelial growth factor serum levels predict primary lung graft dysfunction
K Krenn1, W Klepetko, S Taghavi
1Laboratory for Cardiovascular Research, Center for Anatomy and Cell Biology, Medical University of Vienna, Waehringerstrasse 13, A-1090 Vienna, Austria.
Summary
Pre-operative vascular endothelial growth factor (VEGF) levels can predict primary graft dysfunction (PGD) after lung transplantation. Higher VEGF concentrations identified patients at high risk for severe PGD, aiding early intervention.
Area of Science:
- Transplantation immunology
- Pulmonary medicine
- Vascular biology
Background:
- Primary graft dysfunction (PGD) is a serious complication following lung transplantation with limited treatment options.
- Predictive markers for PGD are currently lacking, hindering proactive management strategies.
Purpose of the Study:
- To determine if pre-transplant serum concentrations of vascular endothelial growth factor (VEGF) can predict the occurrence and severity of PGD.
- To evaluate VEGF as a potential biomarker for identifying lung transplant recipients at high risk for PGD.
Main Methods:
- Serum VEGF levels were measured using ELISA in 150 lung transplant recipients and 12 controls before transplantation.
- PGD was assessed using chest radiographs and PaO(2)/FiO(2) ratios, categorized into grades 0-3.
- Logistic regression and receiver operating characteristic (ROC) analyses were employed to assess VEGF's predictive capability.
Main Results:
- Pre-operative VEGF serum concentrations were significantly elevated in patients who developed PGD grade 3 compared to those with grades 0-2 and controls (p < 0.0001).
- VEGF levels significantly predicted PGD grade 3 versus grades 0-2 (p < 0.0001) with an Area Under the Curve (AUC) of 0.778.
- A VEGF cut-off level of ≥650 pg/mL demonstrated 86% sensitivity and 62% specificity for identifying PGD grade 3.
Conclusions:
- Pre-transplant serum VEGF concentrations serve as a valuable predictive marker for severe primary graft dysfunction in lung transplantation.
- Measuring VEGF pre-operatively can help identify lung transplant recipients at high risk for PGD, potentially guiding clinical management.
