alexa Prognostic significance of uric acid serum concentration in patients with acute ischemic stroke.
Biochemistry

Biochemistry

Biochemistry & Analytical Biochemistry

Author(s): Chamorro A, Obach V, Cervera A, Revilla M, Deulofeu R,

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Abstract BACKGROUND AND PURPOSE: We sought to assess in 881 consecutive patients with acute ischemic stroke the clinical relevance in regard to functional outcome of the natural antioxidant uric acid measured at hospital admission. METHODS: Patients had serum uric acid (mg/dL) measured by standard procedures 18.2+/-15.5 hours from clinical onset. At hospital discharge (11.0+/-6.0 days), neurological impairment was classified as moderate/severe (Mathew score < or =75; n=304) or mild/absent (Mathew score >75; n=577). Demographics, atherosclerotic risk factors, history of organ disease, baseline neurological score, stroke subtype, infarction size, renal function, aspirin use before stroke, stroke therapy, diuretic use, and laboratory markers, including erythrocyte sedimentation rate, were analyzed in both outcome groups with the use of backward logistic regression. RESULTS: Increased uric acid values were found in men, hypertensives, alcohol drinkers, and patients with coronary, pulmonary, or renal diseases. Diabetic patients had lower uric acid levels on admission. Uric acid was directly associated with hematocrit (P=0.001), sodium (P=0.001), creatinine (P=0.001), and triglycerides (P=0.001) and inversely related with nonfasting glucose (P=0.001) levels. Neurological impairment on admission (P=0.001) and final infarction size on CT/MRI (P=0.01) were also inversely associated with uric acid. A logistic regression adjusted for confounders confirmed the following independent (odds ratio, 95\% CI) good outcome predictors: age (0.97, 0.96 to 0.99), Mathew score on admission (1.14, 1.12 to 1.17), erythrocyte sedimentation rate (0.98, 0.97 to 0.99), infarction volume (0.98, 0.98 to 0.99), and uric acid (1.12, 1.00 to 1.25). CONCLUSIONS: In patients with acute ischemic stroke, there is a 12\% increase in the odds of good clinical outcome for each milligram per deciliter increase of serum uric acid. This finding reinforces the relevance of oxidative damage in ischemic stroke.
This article was published in Stroke and referenced in Biochemistry & Analytical Biochemistry

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