Journal
NEUROSCIENCE LETTERS
Volume 383, Issue 1-2, Pages 12-16Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2005.03.051
Keywords
Alzheimer's disease; vascular dementia; total tau; phospho-tau; A beta(1-42); cytokines
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In this study we aimed to evaluate the possibility of using cerebrospinal fluid (CSF) tau, A beta(1-42) and inflammatory cytokines for diagnosis of Alzheimer's disease (AD) and vascular dementia (VD). We measured levels of total tau (T-tau), phospho-tau (P-tau), A beta(1-42), IL-6, and TNF alpha in CSF in groups of AD, VD, and controls using enzyme-linked immunosorbent assay (ELISA). T-tau level was found significantly higher in groups of AD (t = 3.015, P < 0.01) and VD (t=2.872, P < 0.01) than in controls. IL-6 level as also higher in AD (t=2.883, P < 0.01) and VD (t=3.032, P < 0.01) than in controls. Both T-tau and IL-6 were not significantly different between AD and VD (P > 0.05). The group of AD had remarkably higher P-tau (t=4.261 and 3.883, respectively, P < 0.01) and lower A beta(1-42) (t = 3.883 and 4.129, respectively, P < 0.01), as compared with those in VD and controls. TNF alpha level in AD was significantly higher than that in controls (t=2.745, P < 0.01), but lower than in VD (t=3.032, P < 0.01). Our data suggested that increment of T-tau and IL-6 levels in CSF was useful for screening AD and VD in certain population, while descending A beta(1-42) and ascending TNFa in CSF are preferable to diagnose AD. In addition, a higher level of CSF P-tau might support AD diagnosis. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
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