| 저자 |
Min Young Seo1, Hye Min Choi1, Cheol Woong Jung2, Kwan Tae Park2, Sang-Kyung Jo1,Wonyong Cho1, Hyoung Kyu Kim1, Myung-Gyu Kim1 |
| 초록 |
Background: In kidney transplant (KT) recipient, several new biomarkers have been investigated for predicting early
tubular injury and our recent study identified day 2 urinary neutrophil gelatinase associated lipocalin (NGAL) to be
useful in predicting slow graft function and adverse 1-year outcome. Here in this study, we further investigated the
value of urinary NGAL and liver type fatty acid binding protein (L-FABP) in predicting long term graft outcome up
to 2 years.
Methods: This was a single-center, prospective observational study. Serial urinary NGAL and L-FABP levels at 0 hrs,
2 days and 6 days after KT were measured and the clinical outcomes including acute allograft rejection, proteinuria
and estimated glomerular filtration rate (eGFR) were collected during the 2-year period after KT.
Results: Of the 69 patients investigated, 14 and 7 experienced slow and delayed graft function (SGF and DGF), and
urinary NGAL on day 2 after KT was significantly associated with SGF and DGF development, but L-FABP was not.
During the 2-year follow up period, 13 (18.8%), 4 (5.8%) and 1 (1.4%) were diagnosed with acute T-cell mediated
rejection, acute antibody mediated rejection (AMR) and chronic AMR, respectively. In addition, 10 (6.9%) developed
calcineurin inhibitor toxicity and 6 (8.7%) developed BK viremia. The mean eGFRs at 1 and 2 years after KT were
65.1±19.1 and 58.5±22.6 ml/min/1.73m2. When poor long-term graft outcome was defined as eGFR at 2 year less
than 50 mL/min/1.73 m2, elderly donor, AR and higher level of urinary L-FABP at 0hr were found to be significant
risk factors. Furthermore, among the patients who did not develop AR, L-FABP showed more strong association with
2-year poor graft function (p=0.006). In the multivariate logistic regression analysis, higher L-FABP at 0 hr (p=0.015)
as well as acute rejection (p=0.006) was also independent factor for predicting poor long-term graft function and
ROC analysis showed that area under the curve (AUC) of urinary L-FABP was 0.692 (CI 0.509- 0.876, p=0.036).
Conclusions: Our results demonstrate the possibility that urinary L-FABP might be useful in predicting adverse
longterm outcome in KT patients. |