Nitric oxide and long-term outcomes after kidney transplantation: Results of the TransplantLines cohort study.
Nitric Oxide
; 125-126: 1-11, 2022 08 01.
Article
en En
| MEDLINE
| ID: mdl-35660109
ABSTRACT
Impaired endogenous nitric oxide (NO) production may contribute to graft failure and premature mortality in kidney transplant recipients (KTR). We investigated potential associations of 24-h urinary NOx (NO3- + NO2-) excretion (uNOx) with long-term outcomes. uNOx was determined by HPLC and GC-MS in 698 KTR and in 132 kidney donors before and after donation. Additionally, we measured urinary nitroso species (RXNO) by gas-phase chemiluminescence. Median uNOx was lower in KTR compared to kidney donors (688 [393-1076] vs. 1301 [868-1863] before donation and 1312 [982-1853] µmol/24 h after donation, P < 0.001). During median follow-up of 5.4 [4.8-6.1] years, 150 KTR died (61 due to cardiovascular disease) and 83 experienced graft failure. uNOx was inversely associated with all-cause mortality (HR per doubling of uNOx 0.84 [95% CI 0.75-0.93], P < 0.001) and cardiovascular mortality (HR 0.78 [95% CI 0.67-0.92], P = 0.002). The association of uNOx with graft failure was lost when adjusted for renal function (HR per doubling of uNOx 0.89 [95% CI 0.76-1.05], P = 0.17). There were no significant associations of urinary RXNO with outcomes. Our study suggests that KTR have lower NO production than healthy subjects and that lower uNOx is associated with a higher risk of all-cause and cardiovascular mortality.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Enfermedades Cardiovasculares
/
Trasplante de Riñón
Tipo de estudio:
Etiology_studies
/
Incidence_studies
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Observational_studies
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Risk_factors_studies
Límite:
Humans
Idioma:
En
Revista:
Nitric Oxide
Asunto de la revista:
BIOQUIMICA
/
QUIMICA
Año:
2022
Tipo del documento:
Article
País de afiliación:
Países Bajos