Persistent inflammatory response in stroke survivors

Neurology
N B BeamerG Sexton

Abstract

Goals were to determine how long acute-phase markers remain elevated after ischemic stroke and how marker levels relate to stroke risk factors, stroke mechanism, and subsequent vascular events. Fibrinogen (FIB), C-reactive protein (CRP), leukocytes (WBC), neutrophils (PMN), interleukin-6, and interleukin-1 receptor antagonist were measured at stroke onset and at 6 weeks, 6 months, and 1 year after enrollment, or until a vascular event occurred in 136 acute ischemic stroke patients, 76 patients with comparable risk factors for stroke, and 48 age-balanced healthy subjects. Multivariate logistic analysis showed that prior stroke and FIB level predicted new events in stroke patients (p < 0.04 for both), whereas congestive heart failure (p < 0.02) and creatinine level (p < 0.006) were predictive in at-risk patients. After controlling for infection, FIB, CRP, and PMN levels at baseline were higher in at-risk but not in stroke patients with recurrent events (p < 0.05 for all). At 1 year, FIB levels remained elevated in event-free stroke survivors compared with levels in the risk and control groups (p < 0.001 for both). FIB also remained higher in stroke survivors who had atheroembolism (AE) compared with non-AE stroke survivors (381+/...Continue Reading

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