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  • Title: Prognostic value of biochemical markers of brain damage and oxidative stress in post-surgical aneurysmal subarachnoid hemorrhage patients.
    Author: Kaneda K, Fujita M, Yamashita S, Kaneko T, Kawamura Y, Izumi T, Tsuruta R, Kasaoka S, Maekawa T.
    Journal: Brain Res Bull; 2010 Jan 15; 81(1):173-7. PubMed ID: 19887101.
    Abstract:
    The aim of this study is to determine effective biochemical markers and optimal sampling timing for prediction of neurological prognosis in post-surgical aneurysmal subarachnoid hemorrhage (SAH) patients. Subjects were a sequential group of SAH patients admitted to our centre who underwent aneurysm clipping before Day 3 and who received a cerebrospinal fluid (CSF) drain. CSF samples from 32 patients were collected on Days 3, 7, and 14. Neurological outcome was assessed by neurosurgeons using the Glasgow outcome scale (GOS) at 6 months after onset. CSF levels of neuron-specific enolase (NSE), S100B, and glial fibrillary acidic protein (GFAP) were determined using enzyme-linked immunosorbent assay, and the CSF concentrations of malondialdehyde (MDA) were determined using spectrophotometric assay. In univariate analysis, S100B on Days 3 and 14, GFAP on Days 3 and 7, and MDA on Day 14 were significantly higher in the poor outcome group (GOS 1-4) than in the good outcome group (GOS 5). In multivariate analysis, only MDA on Day 14 was identified as a significant predictor of poor neurological outcome at 6 months after onset. The area under the receiver-operating characteristic (ROC) curve for MDA on Day 14 was 0.841. For a threshold of 0.3 microM, sensitivity and specificity were 0.875 and 0.750, respectively. Our findings suggest that these biochemical markers, especially MDA, show significant promise as predictors of neurological outcome in clinical practice.
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