Urinary Taurine Excretion and Risk of Late Graft Failure in Renal Transplant Recipients

Adrian Post , Mohammad Yusof Said, António Gomes Neto, Jennifer van der Krogt, Pim de Blaauw, Stefan Berger, Johanna M. Geleijnse, Karin Borgonjen, Else Berg ,van den, Harry van Goor, Gerald Rimbach, Ido Kema, Dimitrios Tsikas, M.R. Heiner Fokkema, Stephan Bakker

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Taurine is a sulfur containing nutrient that has been shown to protect against oxidative stress, which has been implicated in the pathophysiology leading to late graft failure after renal transplantation. We prospectively investigated whether high urinary taurine excretion, reflecting high taurine intake, is associated with low risk for development of late graft failure in renal transplant recipients (RTR). Urinary taurine excretion was measured in a longitudinal cohort of 678 stable RTR. Prospective associations were assessed using Cox regression analyses. Graft failure was defined as the start of dialysis or re-transplantation. In RTR (58% male, 53 ± 13 years old, estimated glomerular filtration rate (eGFR) 45 ± 19 mL/min/1.73 m2), urinary taurine excretion (533 (210-946) µmol/24 h) was significantly associated with serum free sulfhydryl groups (β = 0.126; P = 0.001). During median follow-up for 5.3 (4.5-6.0) years, 83 (12%) patients developed graft failure. In Cox regression analyses, urinary taurine excretion was inversely associated with graft failure (hazard ratio: 0.74 (0.67-0.82); P < 0.001). This association remained significant independent of potential confounders. High urinary taurine excretion is associated with low risk of late graft failure in RTR. Therefore, increasing taurine intake may potentially support graft survival in RTR. Further studies are warranted to determine the underlying mechanisms and the potential of taurine supplementation.

Originele taal-2English
Artikelnummer2212
Aantal pagina's18
TijdschriftNutrients
Volume11
Nummer van het tijdschrift9
DOI's
StatusPublished - sep-2019

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