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RANTES correlates with inflammatory activity and synaptic excitability in multiple sclerosis. | LitMetric

RANTES correlates with inflammatory activity and synaptic excitability in multiple sclerosis.

Mult Scler

Multiple Sclerosis Clinical and Research Unit, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy/IRCCS Istituto Neurologico Mediterraneo (INM) Neuromed, Pozzilli, Italy

Published: October 2016

AI Article Synopsis

Article Abstract

Background: Alterations of synaptic transmission induced by inflammatory activity have been linked to the pathogenic mechanisms of multiple sclerosis (MS). Regulated upon activation, normal T-cell expressed, and secreted (RANTES) is a pro-inflammatory chemokine involved in MS pathophysiology, potentially able to regulate glutamate release and plasticity in MS brains, with relevant consequences on the clinical manifestations of the disease.

Objective: To assess the role of RANTES in the regulation of cortical excitability.

Methods: We explored the association of RANTES levels in the cerebrospinal fluid (CSF) of newly diagnosed MS patients with magnetic resonance imaging (MRI) and laboratory measures of inflammatory activity, as well its role in the control of cortical excitability and plasticity explored by means of transcranial magnetic stimulation (TMS), and in hippocampal mouse slices in vitro.

Results: CSF levels of RANTES were remarkably high only in active MS patients and were correlated with the concentrations of interleukin-1β. RANTES levels were associated with TMS measures of cortical synaptic excitability, but not with long-term potentiation (LTP)-like plasticity. Similar findings were obtained in mouse hippocampal slices in vitro, where we observed that RANTES enhanced basal excitatory synaptic transmission with no effect on LTP.

Conclusion: RANTES correlates with inflammation and synaptic excitability in MS brains.

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Source
http://dx.doi.org/10.1177/1352458515621796DOI Listing

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