ABSTRACT
Antecedentes: La hiperuricemia se asocia a enfermedad cardiovascular. Sin embargo, la contribución del ácido úrico (AU) sobre la mortalidad cardiovascular (MCV) en pacientes diabéticos es controvertida. Objetivo: Evaluar la contribución del AU al riesgo de MCV en pacientes con diabetes de tipo 2 (DM2). Pacientes y métodos: Se incluyó a pacientes con DM2 atendidos en consultas externas hospitalarias. Se recogieron variables demográficas, clínicas y bioquímicas, incluidos niveles de AU, excreción de albúmina urinaria y tasa de filtración glomerular (TFG). La contribución independiente del AU a la MCV se evaluó con modelos de regresión de Cox con ajuste progresivo para potenciales factores de confusión. Resultados: Se incluyó a 452 pacientes con edad media de 65,9 años (DE 9,5). La media de AU fue de 4,2mg/dl y los cuartiles (Q) de AU fueron: Q1<3,3; Q2: 3,3-4,2; Q3: 4,3-5,1; Q4>5,1mg/dl. La correlación entre AU y TFG fue significativa (Rho = −0,227; p<0,001). Durante una mediana de 13 años de seguimiento las tasas de MCV fueron más elevadas en el Q4 de la distribución de AU (Q1: 10,7; Q2: 11,7; Q3: 10,7 y Q4: 21,6 por cada 1.000 pacientes/año; p=0,027). El AU fue un factor predictor de MCV en análisis univariante (HR1mg/dl=1,30; p=0,002), pero no en multivariante ajustado para la excreción de albúmina urinaria y TFG (HR1mg/dl=1,20; p= 0,12). Discusión y conclusiones: Los niveles de AU se asocian a incremento de MCV en pacientes con DM2. No obstante, la asociación puede no ser causal, sino mediada por la afectación de la función renal en los pacientes con hiperuricemia
Background: Hyperuricemia is associated to cardiovascular disease. However, the contribution of uric acid (UA) to cardiovascular mortality in diabetic patients is controversial. Objective: To assess the impact of UA levels on the risk of cardiovascular mortality risk in a cohort of patients with type 2 diabetes mellitus (T2DM). Patients and methods: A prospective cohort study on outpatients with T2DM. The clinical endpoint was cardiovascular death. Anthropometric, demographic, clinical, and biochemical variables were collected, including UA levels, urinary albumin excretion and estimated glomerular filtration rate. The independent contribution of UA levels to cardiovascular mortality was assessed using multivariate Cox regression models, progressively adjusted for potential confounders. Results: A total of 452 patients with a mean age of 65.9 (SD 9.5) years were enrolled. Mean UA level was 4.2mg/dL. Quartiles of UA levels were Q1 < 3.3; Q2: 3.3-4.2; Q3: 4.3-5.1; Q4 > 5.1mg/dL. UA levels significantly correlated with estimated glomerular filtration rate (Rho=−0.227; p<0.001). During a median follow-up time of 13 years, cardiovascular mortality rates were higher in Q4 of the UA distribution (Q1: 10.7; Q2: 11.7; Q3: 10.7; Q4: 21.6 per 1000 patient-years; p = 0.027). UA was a predictor of cardiovascular mortality in the univariate analysis (HR1mg/dL = 1.30; p=0.002), but not in a multivariate analysis adjusted for urinary albumin excretion and eGFR (HR1mg/dL=1.20; p=0.12). Discussion and conclusions: High UA levels are associated to cardiovascular mortality in patients with T2DM. However, the role of UA may be mediated by impaired kidney function in patients with hyperuricemia
Subject(s)
Humans , Male , Female , Middle Aged , Aged , Uric Acid/adverse effects , Cardiovascular Diseases/mortality , Diabetes Mellitus, Type 2/complications , Hyperuricemia/physiopathology , Risk Factors , Cohort Studies , Prospective StudiesABSTRACT
BACKGROUND: Hyperuricemia is associated to cardiovascular disease. However, the contribution of uric acid (UA) to cardiovascular mortality in diabetic patients is controversial. OBJECTIVE: To assess the impact of UA levels on the risk of cardiovascular mortality risk in a cohort of patients with type 2 diabetes mellitus (T2DM). PATIENTS AND METHODS: A prospective cohort study on outpatients with T2DM. The clinical endpoint was cardiovascular death. Anthropometric, demographic, clinical, and biochemical variables were collected, including UA levels, urinary albumin excretion and estimated glomerular filtration rate. The independent contribution of UA levels to cardiovascular mortality was assessed using multivariate Cox regression models, progressively adjusted for potential confounders. RESULTS: A total of 452 patients with a mean age of 65.9 (SD 9.5) years were enrolled. Mean UA level was 4.2mg/dL. Quartiles of UA levels were Q1 < 3.3; Q2: 3.3-4.2; Q3: 4.3-5.1; Q4 > 5.1mg/dL. UA levels significantly correlated with estimated glomerular filtration rate (Rho=-0.227; p<0.001). During a median follow-up time of 13 years, cardiovascular mortality rates were higher in Q4 of the UA distribution (Q1: 10.7; Q2: 11.7; Q3: 10.7; Q4: 21.6 per 1000 patient-years; p = 0.027). UA was a predictor of cardiovascular mortality in the univariate analysis (HR1mg/dL = 1.30; p=0.002), but not in a multivariate analysis adjusted for urinary albumin excretion and eGFR (HR1mg/dL=1.20; p=0.12). DISCUSSION AND CONCLUSIONS: High UA levels are associated to cardiovascular mortality in patients with T2DM. However, the role of UA may be mediated by impaired kidney function in patients with hyperuricemia.
Subject(s)
Cardiovascular Diseases/blood , Cardiovascular Diseases/mortality , Diabetes Complications/blood , Diabetes Complications/mortality , Diabetes Mellitus, Type 2/blood , Uric Acid/blood , Aged , Cardiovascular Diseases/complications , Diabetes Mellitus, Type 2/complications , Female , Humans , Male , Middle Aged , Prospective Studies , Risk Assessment , Time FactorsABSTRACT
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