Esclerose multipla : mediadores da resposta inflamatoria associadas a ressonancia magnetica quantitativa / Quantitative MRI and CSF inflammatory mediators in a sample of brazilian multiple sclerosis population : a prospective study

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Quantitative MRI and CSF inflammatory mediators in a sample of brazilian multiple sclerosis population: a prospective study. Multiple sclerosis (MS) is referred to as a chronic inflammatory, demyelinating, and neurodegenerative disorder of the central nervous system (CNS), with a highly variable clinical course and prognosis. This is a prospective study to investigate the profile of inflammatory response and neurodegeneration in brazilian MS population by comparing cerebrospinal fluid (CSF) markers and quantitative magnetic resonance imaging (MRI). A total of 54 patients with relapsing-remitting MS (RRMS) were included in this study according to Poser criteria. MRIs were performed and CSF samples were collected both during the diagnostic process and after immunomodulator treatment (beta interferon and glatiramer acetate). IgG and albumin in the CSF and serum were measured by nephelometry and oligoclonal IgG bands were identified by isoelectrofocusing. Cytokines, Epstein-Barr virus (EBV) antibodies and Tau proteins were quantified using commercial kits by ELISA. Brain MRI examinations were performed using a semi-automated local lesion threshold technique. The results demonstrated that patients with RRMS in stable phase of the disease reveal increase in the secretion of pro-inflamatory cytokines in both serum and CSF associated with the intrathecal synthesis of IgG and the number of leucocytes in the CSF. Demyelinating brain lesions were detected by MRI in 94.4% and the presence of oligoclonal bands were observed in 83% of patients. During the evolution of the disease, it was possible to establish a positive correlation of IgG index with total lesion volume and total leukocytes count. Increased CSF T-tau levels were found in MS as compared to controls and brain atrophy was observed since the diagnosis of disease. The both annual relapse rate and the level T-tau protein were significantly reduced after the treatment with IFNß, although many of the patients had presented an increased at EDSS. Taken together, we provide evidence that the study of MRI and the inflammatory parameters is an useful tool for monitorizing MS patients even in the stable form of the disease

ASSUNTO(S)

cytokines neuroimagem liquido cefalorraquidiano - exame immunoglobulins imunoglobulinas esclerose multipla citocinas multiple sclerosis cerebrospinal fluid neuroimaging

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