1. Telomere length of recipients and living kidney donors and chronic graft dysfunction in kidney transplants.
- Author
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Oetting WS, Guan W, Schladt DP, Wildebush WA, Becker J, Thyagarajan B, Jacobson PA, Matas AJ, and Israni AK
- Subjects
- Adult, Age Factors, Aged, Biomarkers metabolism, DNA analysis, Delayed Graft Function genetics, Female, Genotype, Graft Survival genetics, Humans, Kidney physiopathology, Leukocytes cytology, Living Donors, Male, Middle Aged, Multivariate Analysis, Polymerase Chain Reaction, Prospective Studies, Renal Insufficiency physiopathology, Risk, Graft Rejection genetics, Kidney Transplantation methods, Renal Insufficiency therapy, Telomere ultrastructure
- Abstract
Background: A biological marker that would allow clinicians to determine the length of time an allograft will remain functional after transplantation would greatly aid the ability to stratify donors by risk and to use biologically "young" allografts in young recipients, maximizing the use of this rare resource. Telomere length (TL) has been proposed to be such a marker to determine the biological age of a tissue., Methods: We genotyped DNA from 1805 recipients and 1038 living kidney donors for TL to determine the association of TL with acute rejection (AR), chronic graft dysfunction (CGD), and graft failure of kidney allografts. DNA was isolated from peripheral blood white blood cells and TL was measured in DNA using the multiplexed monochrome quantitative polymerase chain reaction assay., Results: As has been previously shown, we found a significant association between log-transformed TL and donor age (P=3.8×10) and recipient age (P=5.6×10). Univariate and multivariate analysis did not show any significant associations between log-transformed TL in donor or recipient DNA with AR, CGD, or graft failure, although we did observe an association between donor chronological age and CGD (P=0.018)., Conclusion: Although older allografts have been shown to be at greater risk for AR and CGD, this does not appear to be associated with shorter TL. Different markers will need to be identified to determine how biological age impacts transplant outcome, such as age-related fibrosis or tubular atrophy and tubular loss.
- Published
- 2014
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