Title
Fibrous intimal thickening at implantation adversely affects long-term kidney allograft function Fibrous intimal thickening at implantation adversely affects long-term kidney allograft function
Author
Faculty/Department
Faculty of Medicine and Health Sciences
Publication type
article
Publication
Baltimore, Md ,
Subject
Human medicine
Source (journal)
Transplantation. - Baltimore, Md, 1963, currens
Volume/pages
87(2009) :1 , p. 72-78
ISSN
0041-1337
1534-6080
ISI
000262483700012
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Background. Kidneys from marginal and older donors are increasingly used to respond to the increasing demand for kidney transplants. This study evaluated the predictive value of intimal hyperplasia, as a marker of vasculopathy, in the renal allograft at the time of transplantation (transplantation) on the subsequent graft function (7 years). Methods. The intima/media ratio of the arterial walls (I/M) was morphometrically determined by the sectorial elliptic method, in 51 implantation biopsies. Two study groups were determined. Group 1, with I/M less than or equal to 0.47, was considered as the group with minimal vascular damage at transplantation. Group 2, with I/M more than 0.47, was considered as having vasculopathy at transplantation. Results. During the first 15 months, the estimated glomerular filtration rate improved in group 1 from 53+/-17 to 61+/-17 mL/min/1.73 m2, whereas it decreased from 51+/-21 to 46+/-14 mL/min/1.73 m2 in group 2. From 1 year posttransplantation, the estimated glomerular filtration rate (eGFR) was significantly higher in group 1 at all time points (6 month evaluation). The difference in graft function between the two groups (mean, 11 mL/min/1.73 m2) remained unchanged between 1 and 7 years posttransplantation. Among several clinical parameters investigated, blood pressure of the recipient significantly modulates the impact of preexisting vasculopathy on graft function. Conclusion. Our data provide evidence that donor-related vasculopathy, at the time of transplantation, has a persistent significant impact on the subsequent graft function. This effect becomes only apparent at 1 year posttransplantation and is increased in recipients with inadequately controlled blood pressure.
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