Journal
UPSALA JOURNAL OF MEDICAL SCIENCES
Volume 117, Issue 3, Pages 284-292Publisher
INFORMA HEALTHCARE
DOI: 10.3109/03009734.2012.669423
Keywords
Brain atrophy; multiple sclerosis; tau protein
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Introduction. Tau protein is a potential marker of neuronal damage. The aim of the study is to investigate its potential role as a marker of brain atrophy in multiple sclerosis (MS). Materials and methods. Cerebrospinal fluid (CSF) and blood samples were collected from 48 patients with multiple sclerosis. Total-tau (t-tau) and phospho(181Thr)-tau (p-tau) concentrations were assayed with commercially available INNOTEST (R) hTAU Ag and INNOTEST (R) phospho181Thr-tau((181P)) and correlated with indices of brain atrophy in magnetic resonance imaging (MRI) and clinical characteristics of the study population. Results. T-tau concentration in CSF was significantly higher in relapsing-remitting (RR) compared to secondary progressive (SP) MS patients (P = 0.01). Brain parenchymal fraction (BPF) was significantly decreased in SP patients (P = 0.002). BPF in the whole study population correlated inversely with Expanded Disability Status Scale (EDSS) (r = -0.51, P = 0.0002) and Multiple Sclerosis Severity Score (MSSS) (r = -0.42, P = 0.002). T-tau in CSF in the whole patient group correlated inversely with EDSS (r = -0.58, P = 0.0006). Conclusions. The results of our study suggest that total-tau concentration in CSF in a MS population decreases in the course of disease and reflects degree of parenchymal brain loss.
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