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  • Title: Serum uric acid levels and risk for acute ischaemic non-embolic stroke in elderly subjects.
    Author: Milionis HJ, Kalantzi KJ, Goudevenos JA, Seferiadis K, Mikhailidis DP, Elisaf MS.
    Journal: J Intern Med; 2005 Nov; 258(5):435-41. PubMed ID: 16238679.
    Abstract:
    BACKGROUND: Elevated serum uric acid (SUA) levels have been proposed as an independent risk factor for cardiovascular (CV) morbidity and mortality. Recent evidence suggests that treatments with a hypouricaemic action have a favourable effect on CV event prevention. OBJECTIVES: The association between SUA and acute ischaemic/non-embolic stroke was assessed in a population-based case-control study in the prefecture of Ioannina, Epirus, Greece. SUBJECTS AND METHODS: A total of 163 patients aged older than 70 years (88 men and 75 women) admitted due to a first-ever-in-a-lifetime acute ischaemic/non-embolic stroke and 166 volunteers (87 men and 79 women) without a history of CV disease were included. The association between SUA and stroke was determined by multivariate logistic regression modelling after adjusting for potential confounding factors. RESULTS: Stroke patients showed higher concentrations of SUA compared with controls (333.1+/-101.1 micromol L(-1) vs. 285.5+/-83.3 micromol L(-1); P<0.001). In univariate analysis elevated SUA levels were associated with increased risk for ischaemic stroke [odds ratio (OR) 1.42, 95% confidence interval (CI) 1.21-1.64, P<0.0001]. Compared to patients with SUA levels in the lowest quintile, those within the highest quintile had a 2.8-time increase in the odds of suffering an ischaemic stroke (OR 2.81, 95% CI 1.67-4.73, P<0.001). This association was strong even after controlling for gender, age, body mass index, the presence of hypertension and diabetes mellitus, drug treatment and lipids (OR 2.90, 95% CI 1.59-5.30, P=0.001). CONCLUSION: Elevated SUA is associated with an increased risk for acute ischaemic/non-embolic stroke in a strictly defined population of elderly individuals independently of concurrent metabolic derangements. This association may need to be considered when treating the elderly.
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