RESUMO
PURPOSE: Plasma gelsolin depletion has been associated with poor outcome of critically ill patients. We sought to investigate change in plasma gelsolin level after ischemic stroke and to evaluate its relation with disease outcome. MATERIALS AND METHODS: Fifty healthy controls and 172 patients with first-ever ischemic stroke were included. Plasma samples were obtained within 24 hours from stroke onset. Its concentration was measured by enzyme-linked immunosorbent assay. RESULTS: Plasma gelsolin level in stroke patients was significantly decreased compared with healthy controls. A multivariate analysis showed that plasma gelsolin level was an independent predictor for 1-year mortality (odds ratio, 0.945; 95% confidence interval [CI], 0.918-0.974; P = .0002) and negatively associated with National Institutes of Health Stroke Scale (NIHSS) score (t = -4.802, P < .001) and plasma C-reactive protein level (t = -4.197, P < .001). A receiver operating characteristic curve identified that a baseline plasma gelsolin level less than 52.0 mg/L predicted 1-year mortality of patients with 73.0% sensitivity and 65.2% specificity (area under curve [AUC], 0.738; 95% CI, 0.666-0.802). The predictive value of the gelsolin concentration was similar to that of NIHSS score (AUC, 0.742; 95% CI, 0.670-0.806; P = .940). Gelsolin improved the AUC of NIHSS score to 0.814 (95% CI, 0.747-0.869; P = .032). CONCLUSIONS: Plasma gelsolin level is a useful, complementary tool to predict mortality after ischemic stroke.