Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/10230/35714

Título:	Low cytomegalovirus seroprevalence in early multiple sclerosis: a case for the 'hygiene hypothesis'?
Autor/a:	Alari-Pahissa, Elisenda; Moreira Villanueva, Antía; Zabalza, Ana; Alvarez-Lafuente, Roberto; Munteis Olivas, Elvira; Vera, Andrea; Arroyo, Rafael; Álvarez Cermeño, Jose Carlos; Villar, Luisa Maria; López-Botet, Miguel; Martínez-Rodriguez, José E.
Abstract:	BACKGROUND AND PURPOSE: Cytomegalovirus (CMV) infection has recently been associated with a lower multiple sclerosis (MS) susceptibility, although it remains controversial whether it has a protective role or is merely an epiphenomenon related to westernization and early-life viral infections. We aimed to evaluate whether CMV serostatus may differ in patients with early MS as compared with patients with non-early MS, analyzing the putative association of this virus with MS clinical course and humoral immune responses against other herpesviruses. METHODS: Multicentric analysis was undertaken of 310 patients with MS (early MS, disease duration ≤5 years, n = 127) and controls (n = 155), evaluating specific humoral responses to CMV, Epstein-Barr virus and human herpesvirus-6, as well as T-cell and natural killer (NK)-cell immunophenotypes. RESULTS: Cytomegalovirus seroprevalence in early MS was lower than in non-early MS or controls (P < 0.01), being independently associated with disease duration (odds ratio, 1.04; 95% confidence interval, 1.01-1.08, P < 0.05). CMV+ patients with MS displayed increased proportions of differentiated T-cells (CD27-CD28-, CD57+, LILRB1+) and NKG2C+ NK-cells, which were associated with a lower disability in early MS (P < 0.05). CMV+ patients with early MS had an age-related decline in serum anti-EBNA-1 antibodies (P < 0.01), but no CMV-related differences in anti-human herpesvirus-6 humoral responses. CONCLUSIONS: Low CMV seroprevalence was observed in patients with early MS. Modification of MS risk attributed to CMV might be related to the induction of differentiated T-cell and NK-cell subsets and/or modulation of Epstein-Barr virus-specific immune responses at early stages of the disease.
Abstract:	This work was supported by grants FIS/PI14/00177,FIS/PI17/00254 and SAF 2013-49063-C2-1-R (SpanishMinistry of Economy and Competitiveness and FEDER), the EU FP7-MINECO Infect-ERA Pro-gram (PCIN-2015-191-C02-01) and Red Española de Esclerosis Múltiple from the Instituto de Salud CarlosIII, European Regional Development Fund (grant RD16/0015/0011) and Spanish Ministry of Economyand Competitiveness.
Materia(s):	-Citomegalovirus -Esclerosi múltiple -Epstein-Barr virus -Cytomegalovirus -Herpesvirus -Hygiene hypothesis -Immunosenescence -Multiple sclerosis -Natural killer cells
Derechos:	info:eu-repo/semantics/embargoedAccess This is the peer reviewed version of the following article: Alari-Pahissa E, Moreira A, Zabalza A, Alvarez-Lafuente R, Munteis E, Vera A. et al. Low cytomegalovirus seroprevalence in early multiple sclerosis: a case for the 'hygiene hypothesis'?. Eur J Neurol. 2018 Jul;25(7):925-933, which has been published in final form at http://dx.doi.org/10.1111/ene.13622. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Tipo de documento:	Artículo Artículo - Versión aceptada
Editor:	Wiley
Compartir:

Mostrar el registro completo del ítem