Blood biomarkers associated with inflammation predict poor prognosis in cerebral venous thrombosis:

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Abstract

Background and purpose Experimental studies suggest inflammation can contribute to blood barrier disruption and brain injury in cerebral venous thrombosis (CVT). We aimed to determine whether blood biomarkers of inflammation were associated with the evolution of brain lesions, persistent venous occlusion or functional outcome in patients with CVT. Methods Pathophysiology of Venous Infarction—Prediction of Infarction and Recanalization in CVT (PRIORITy‐CVT) was a multicenter prospective cohort study of patients with newly diagnosed CVT. Evaluation of neutrophil‐to‐lymphocyte ratio (NLR) and C‐reactive protein (CRP) concentrations in peripheral blood samples was performed at admission in 62 patients. Additional quantification of interleukin (IL)‐6 was performed at day 1, 3 and 8 in 35 patients and 22 healthy controls. Standardized magnetic resonance imaging was performed at day 1, 8 and 90. Primary outcomes were early evolution of brain lesion, early recanalization and functional outcome at 90 days. Results Interleukin‐6 levels were increased in patients with CVT with a peak at baseline. IL‐6, NLR and CRP levels were not related with brain lesion outcomes or early recanalization but had a significant association with unfavourable functional outcome at 90 days (IL‐6: OR = 1.28, 95% CI: 1.05–1.56, P = 0.046; NLR: OR = 1.39, 95% CI: 1.4–1.87, P = 0.014; CRP: OR = 1.756, 95% CI: 1.010–3.051, P = 0.029). Baseline IL‐6 had the best discriminative capacity, with an area under the receiver operating characteristic curve to predict unfavourable functional outcome of 0.74 ( P = 0.031). Conclusions Increased baseline levels of NLR, CRP and IL‐6 may serve as new predictive markers of worse functional prognosis at 90 days in patients with CVT. No association was found between inflammatory markers and early evolution of brain lesion or venous recanalization.

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