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  • Title: Evaluation of Epstein-Barr virus-specific antibodies in Cypriot multiple sclerosis patients.
    Author: Deeba E, Koptides D, Gaglia E, Constantinou A, Lambrianides A, Pantzaris M, Krashias G, Christodoulou C.
    Journal: Mol Immunol; 2019 Jan; 105():270-275. PubMed ID: 30562647.
    Abstract:
    Multiple Sclerosis (MS) is a chronic, demyelinating, inflammatory disease of the central nervous system (CNS) with a strong autoimmune component. Several genetic and environmental factors have been suggested to contribute in MS. The Epstein-Barr virus (EBV) is one pathogenic candidate proposed to be involved in the onset of MS and/or induction of subsequent exacerbations. The possible involvement of EBV in MS is highlighted by a number of national epidemiological studies showing a higher percentage of EBV seropositivity. This study aims to evaluate for the first time the seroprevalence of EBV in Cypriot MS patients. The serum of 133 MS patients and 101 healthy controls (HCs) was used to determine the positivity index of the EBV nuclear antigen-1 (EBNA-1) IgG, viral capsid antigen (VCA) IgG, and early antigen-D (EA-D) IgG, using ELISA. All MS patients were seropositive for both EBNA-1 IgG and VCA IgG as compared to 94.1% (Fisher's exact test, p = 0.0059) and 93.1% (Fisher's exact test, p = 0.0025) of HCs respectively. Furthermore, the positivity indexes of both antibodies were significantly higher in MS patients. There was no significant difference in the presence/absence of EA-D IgG between the two groups nor in the corresponding P.I. levels. The results obtained, revealing higher seropositivity of EBNA-1 IgG and VCA IgG in MS patients, seem to concur with previous findings of studies in other countries, thereby further asserting the theory of EBV involvement in MS.
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