Abstract:
BACKGROUND:Chronic allograft dysfunction (CAD) is a complex phenomenon caused by underlying kidney disease and superimposed environmental and genetic factors. We investigated the association of polymorphisms in the genes for angiotensin-converting enzyme (ACE), angiotensinogen (AGT), angiotensin II receptor type 1 (ATR1) and type 2 (ATR2), and endothelial nitric oxide synthase (ENOS) with the initiation of CAD. METHODS:Genotyping was performed in 125 patients who underwent renal transplantation during a 5-year period for the ACE I/D, AGT M235T, ATR1 A1166C, ATR2 C3123A, and ENOS intron 4a/b gene polymorphisms. The following information was collected for each case: date of transplantation, age and sex of donor and recipient, donor type, cold ischemia time, number of human leukocyte antigen mismatches, number of acute rejection episodes, and laboratory findings at discharge from hospital and annual rechecks. Blood pressure was measured at yearly intervals throughout follow-up. RESULTS:The proportions of the genotypes were ACE II/ID/DD 12%, 33.6%, 54.4%; AGT MM/MT/TT 33%, 65.2%, 1.9%; ATR1 AA/AC/CC 68.6%, 30.7%, 0.7%; ATR2 CC/CA/AA 57.9%, 27.5%, 14.4%; and ENOS aa/ab/bb 6.4%, 22%, 71.6%, respectively. Statistical analysis of the major risk factors for the initiation of CAD showed that ACE DD genotype, cadaveric donor type, and level of proteinuria at 1 year posttransplantation were associated with poorer renal function. The graft function was not affected by AGT, ATR1, ATR2, and ENOS gene polymorphisms. CONCLUSIONS:These findings suggest that the DD variant of the ACE gene polymorphism is associated with increased risk of developing CAD.
journal_name
Transplantationjournal_title
Transplantationauthors
Akcay A,Sezer S,Ozdemir FN,Arat Z,Atac FB,Verdi H,Colak T,Haberal Mdoi
10.1097/01.tp.0000134972.81306.b1subject
Has Abstractpub_date
2004-09-27 00:00:00pages
892-8issue
6eissn
0041-1337issn
1534-6080pii
00007890-200409270-00016journal_volume
78pub_type
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