Clinical significance of monitoring serum level of matrix metalloproteinase 9 in patients with acute kidney allograft rejection

Transplantation Proceedings
Y-G ZhaoX-Y He

Abstract

This study was designed to explore the clinical significance of dynamically monitoring the serum level of matrix metalloproteinase 9 (MMP-9) before and after renal transplantation. Before transplantation and 1, 3, 5, 7, 10, 15, and 20 days after transplantation, the peripheral blood was collected from 102 renal transplant recipients, including 8 with acute rejection (ARs) and 94 non-ARs. The serum MMP-9 level was detected by Luminex 200 analyzer (Luminex Corporation, Austin, TX, USA). By day 3 post-transplantation, the serum MMP-9 level in non-ARs had significantly reduced as compared to the pretransplantation level, and reached the lowest value on day 20 post-transplantation. In contrast, the serum MMP-9 level in ARs had significantly increased by day 3, reached the highest value on day 7, and remained significantly higher on day 20 as compared to the pretransplantation level. The receiver operating characteristic curve was plotted to evaluate the power of serum MMP-9 level on day 20 post-transplantation to differentiate the non-AR and AR groups. Our data revealed that with a threshold of 8473.26 pg/mL, the area under the curve was 0.758 (0.661, 0.856); the sensitivity and specificity of the diagnostic were 78.40% and 61.30%, ...Continue Reading

References

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