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2016 ; 13
(1
): 55
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Anti-N-methyl-D-aspartate receptor encephalitis: the clinical course in light of
the chemokine and cytokine levels in cerebrospinal fluid
#MMPMID26941012
Liba Z
; Kayserova J
; Elisak M
; Marusic P
; Nohejlova H
; Hanzalova J
; Komarek V
; Sediva A
J Neuroinflammation
2016[Mar]; 13
(1
): 55
PMID26941012
show ga
BACKGROUND: Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis is an
autoimmune disorder of the central nervous system (CNS). Its immunopathogenesis
has been proposed to include early cerebrospinal fluid (CSF) lymphocytosis,
subsequent CNS disease restriction and B cell mechanism predominance. There are
limited data regarding T cell involvement in the disease. To contribute to the
current knowledge, we investigated the complex system of chemokines and cytokines
related to B and T cell functions in CSF and sera samples from anti-NMDAR
encephalitis patients at different time-points of the disease. One patient in our
study group had a long-persisting coma and underwent extraordinary
immunosuppressive therapy. METHODS: Twenty-seven paired CSF/serum samples were
collected from nine patients during the follow-up period (median 12 months, range
1-26 months). The patient samples were stratified into three periods after the
onset of the first disease symptom and compared with the controls. Modified
Rankin score (mRS) defined the clinical status. The concentrations of the
chemokines (C-X-C motif ligand (CXCL)10, CXCL8 and C-C motif ligand 2 (CCL2)) and
the cytokines (interferon (IFN)?, interleukin (IL)4, IL7, IL15, IL17A and tumour
necrosis factor (TNF)?) were measured with Luminex multiple bead technology. The
B cell-activating factor (BAFF) and CXCL13 concentrations were determined via
enzyme-linked immunosorbent assay. We correlated the disease period with the mRS,
pleocytosis and the levels of all of the investigated chemokines and cytokines.
Non-parametric tests were used, a P value <0.05 was considered to be significant.
RESULTS: The increased CXCL10 and CXCL13 CSF levels accompanied early-stage
disease progression and pleocytosis. The CSF CXCL10 and CXCL13 levels were the
highest in the most complicated patient. The CSF BAFF levels remained unchanged
through the periods. In contrast, the CSF levels of T cell-related cytokines
(INF?, TNF? and IL17A) and IL15 were slightly increased at all of the periods
examined. No dynamic changes in chemokine and cytokine levels were observed in
the peripheral blood. CONCLUSIONS: Our data support the hypothesis that
anti-NMDAR encephalitis is restricted to the CNS and that chemoattraction of
immune cells dominates at its early stage. Furthermore, our findings raise the
question of whether T cells are involved in this disease.