Decreased circulating miRNA levels in patients with primary progressive multiple sclerosis

Author:

Fenoglio Chiara1,Ridolfi Elisa1,Cantoni Claudia12,De Riz Milena1,Bonsi Rossana1,Serpente Maria1,Villa Chiara1,Pietroboni Anna M1,Naismith Robert T2,Alvarez Enrique2,Parks Becky J2,Bresolin Nereo1,Cross Anne H2,Piccio Laura M2,Galimberti Daniela1,Scarpini Elio1

Affiliation:

1. Department of Pathophysiology and Transplantation “Dino Ferrari” Center, University of Milan, Fondazione Cà Granda, IRCCS Ospedale Maggiore Policlinico, Italy

2. Department of Neurology, Washington University School of Medicine, USA

Abstract

Emerging evidence underlines the importance of micro(mi)RNAs in the pathogenesis of multiple sclerosis (MS). Free-circulating miRNAs were investigated in serum from MS patients compared to controls. Statistically significant decreased levels of miR-15b, miR-23a and miR-223 were observed in MS patients ( p < 0.05). Results were validated and replicated in two further independent MS populations. A direct correlation between miRNA levels and the EDSS score was determined in PPMS ( p < 0.007). The generalized trend toward miRNA down-regulation could result in over-expression of target genes involved in disease pathogenesis. Circulating miRNA profiling could thus represent a new avenue to identify easily detectable disease biomarkers.

Publisher

SAGE Publications

Subject

Neurology (clinical),Neurology

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