Antivirus immune activity in multiple sclerosis correlates with MRI activity.

Abstract:

OBJECTIVE:The objective of this study was to determine whether reactivation of Epstein-Barr (EBV) or activation of the anti-EBV immune response correlates with MS disease activity on MR imaging. METHODS:Subjects with early, active relapsing-remitting MS were studied for 16 weeks with blood and saliva samples collected every 2 weeks and brain MRI performed every 4 weeks. We isolated peripheral blood mononuclear cells from each blood sample and tested the immune response to EBV, autologous EBV-infected lymphoblastoid cell lines (LCL), human herpesvirus 6 (HHV6), varicella zoster virus (VZV), tetanus, and mitogens. We measured the proliferative response and the number of interferon-γ secreting cells with ELISPOT. We measured the amounts of EBV, HHV6, and VZV DNA in blood and saliva with quantitative PCR. On MRI, we measured number and volume of contrast enhancing and T2 lesions. We tested for correlation between the immunologic assays and the MRI results, assessing different time intervals between the MRI and immunologic assays. RESULTS:We studied 20 subjects. Ten had enhancing lesions on one or more MRI scans and one had new T2 lesions without enhancement. The most significant correlation was between proliferation to autologous LCL and the number of combined unique active lesions on MRI 4 weeks later. Both proliferation and number of cells secreting interferon-γ in response to LCL correlated with the number of enhancing lesions 8 weeks later. CONCLUSIONS:We find evidence for correlation of antiviral immune responses in the blood with subsequent disease activity on MRI scans.

journal_name

Acta Neurol Scand

authors

Latham LB,Lee MJ,Lincoln JA,Ji N,Forsthuber TG,Lindsey JW

doi

10.1111/ane.12417

subject

Has Abstract

pub_date

2016-01-01 00:00:00

pages

17-24

issue

1

eissn

0001-6314

issn

1600-0404

journal_volume

133

pub_type

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