scholarly journals Difference in the Source of Anti-AQP4-IgG and Anti-MOG-IgG Antibodies in CSF in Patients With Neuromyelitis Optica Spectrum Disorder

Neurology ◽  
2021 ◽  
pp. 10.1212/WNL.0000000000012175
Author(s):  
Tetsuya Akaishi ◽  
Toshiyuki Takahashi ◽  
Tatsuro Misu ◽  
Kimihiko Kaneko ◽  
Yoshiki Takai ◽  
...  
Keyword(s):  
Neuromyelitis Optica ◽  
Specific Antibody ◽  
Serum Levels ◽  
Cell Trafficking ◽  
Antibody Index ◽  
Cell Counts ◽  
Antibody Titers ◽  
Spectrum Disorders ◽  
Acute Attacks ◽  
Disease Specific

ObjectiveTo elucidate the differences in the source and in the level of intrathecal synthesis between anti-aquaporin-4 antibodies (AQP4-IgG) and anti-myelin oligodendrocyte glycoprotein antibodies (MOG-IgG).MethodsThirty-eight patients with MOG-IgG-associated disease and 36 with AQP4-IgG-positive neuromyelitis optica spectrum disorders (NMOSD) were studied for the antibody titers in the sera and cerebrospinal fluids (CSF) simultaneously collected in the acute attacks. The quotients between CSF and serum levels of albumin, total IgG, and each disease-specific antibody were calculated. Intrathecal production level in each disease-specific antibody was evaluated by calculating antibody index from these quotients.ResultsEleven of the 38 patients with MOG-IgG were positive for the antibody only in the CSF, while no patient with AQP4-IgG showed CSF-restricted AQP4-IgG. Blood-brain barrier compromise as shown by raised albumin quotients was seen in 75.0% of MOG-IgG-positive cases and 43.8% of AQP4-IgG-positive cases. Moreover, MOG-IgG quotients were more than 10 times higher than AQP4-IgG quotients (effect size r = 0.659, p < 0.0001). Elevated antibody index (>4.0) was confirmed in 12 of 21 with MOG-IgG, whereas it was seen only in one of 16 with AQP4-IgG (φ = 0.528, p < 0.0001). The CSF MOG-IgG titers (rho = +0.519, p = 0.001) and antibody indexes for MOG-IgG (rho = +0.472, p = 0.036) correlated with the CSF cell counts but not with clinical disability.ConclusionsIntrathecal production of MOG-IgG may occur more frequently than that of AQP4-IgG. This finding implies the different properties of B-cell trafficking and antibody production between MOG-IgG-associated disease and AQP4-IgG-positive NMOSD.

scholarly journals Circulating Memory T Follicular Helper Cells in Patients with Neuromyelitis Optica/Neuromyelitis Optica Spectrum Disorders

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Xueli Fan ◽  
Yanfang Jiang ◽  
Jinming Han ◽  
Jingyao Liu ◽  
Yafen Wei ◽  
...  
Keyword(s):  
Neuromyelitis Optica ◽  
Potential Role ◽  
Neuromyelitis Optica Spectrum Disorders ◽  
Tfh Cells ◽  
Follicular Helper ◽  
Cell Counts ◽  
Before And After ◽  
Spectrum Disorders ◽  
White Blood Cell Counts

Objective. This study aimed to examine the potential role of memory T follicular helper (Tfh) cells in patients with neuromyelitis optica/neuromyelitis optica spectrum disorders (NMO/NMOSD).Methods. The percentages of different subsets of circulating memory Tfh cells in 25 NMO/NMOSD patients before and after treatment as well as in 17 healthy controls were examined by flow cytometry. The levels of IL-21 and AQP4 Ab in plasma and CSF were measured by ELISA.Results. The percentages and numbers of circulating memory Tfh cells, ICOS+, CCR7−, CCR7−ICOS+, CCR7+, CCR7+ICOS+memory Tfh cells, and the levels of IL-21 in plasma and CSF were significantly increased in NMO/NMOSD patients. The percentages of CCR7−and CCR7−ICOS+memory Tfh cells were positively correlated with ARR, plasma IL-21, and AQP4 Ab levels. The percentages of CCR7+and CCR7+ICOS+memory Tfh cells were positively correlated with CSF white blood cell counts, proteins, and IL-21 levels. Treatment with corticosteroids significantly reduced the numbers of CCR7−ICOS+and CCR7+ICOS+memory Tfh cells as well as plasma IL-21 levels in patients with partial remission.Conclusions. Our findings indicate that circulating memory Tfh cells may participate in the relapse and development of NMO/NMOSD and may serve as a new therapeutic target.

scholarly journals Predictive Value of Serum Antibodies and Point Mutations of AQP4, AQP1 and MOG in A Cohort of Spanish Patients with Neuromyelitis Optica Spectrum Disorders

2019 ◽  
Vol 20 (22) ◽  
pp. 5810 ◽  
Author(s):  
Pablo García-Miranda ◽  
Francisco J. Morón-Civanto ◽  
Maria del Mar Martínez-Olivo ◽  
Nela Suárez-Luna ◽  
Reposo Ramírez-Lorca ◽  
...  
Keyword(s):  
Neuromyelitis Optica ◽  
Genetic Basis ◽  
Point Mutations ◽  
Serum Levels ◽  
Sequencing Analysis ◽  
Specificity And Sensitivity ◽  
Diagnostic Capability ◽  
Mog Antibodies ◽  
Spectrum Disorders ◽  
New Biomarkers

The detection of IgG aquaporin-4 antibodies in the serum of patients with Neuromyelitis optica (NMO) has dramatically improved the diagnosis of this disease and its distinction from multiple sclerosis. Recently, a group of patients have been described who have an NMO spectrum disorder (NMOsd) and who are seronegative for AQP4 antibodies but positive for IgG aquaporin-1 (AQP1) or myelin oligodendrocyte glycoprotein (MOG) antibodies. The purpose of this study was to determine whether AQP1 and MOG could be considered new biomarkers of this disease; and if point mutations in the gDNA of AQP4, AQP1 and MOG genes could be associated with the etiology of NMOsd. We evaluated the diagnostic capability of ELISA and cell-based assays (CBA), and analyzed their reliability, specificity, and sensitivity in detecting antibodies against these three proteins. The results showed that both assays can recognize these antigen proteins under appropriate conditions, but only anti-AQP4 antibodies, and not AQP1 or MOG, appears to be a clear biomarker for NMOsd. CBA is the best method for detecting these antibodies; and serum levels of AQP4 antibodies do not correlate with the progression of this disease. So far, the sequencing analysis has not revealed a genetic basis for the etiology of NMOsd, but a more extensive analysis is required before definitive conclusions can be drawn.

Correlation between serum levels of endothelin-1 and disease severity in patients with neuromyelitis optica spectrum disorders

Immunobiology ◽  
2020 ◽  
Vol 225 (3) ◽  
pp. 151959
Author(s):  
Ming Yi ◽  
Ming-Qi Liu ◽  
Li-Sha Chou ◽  
Shu-Min Jiang ◽  
Lin-Jie Zhang ◽  
...  
Keyword(s):  
Disease Severity ◽  
Neuromyelitis Optica ◽  
Serum Levels ◽  
Neuromyelitis Optica Spectrum Disorders ◽  
Endothelin 1 ◽  
Spectrum Disorders

P 855. Epidemiology of Neuromyelitis Optica Spectrum Disorders in Children and Adolescents

2018 ◽  
Author(s):  
Christian Lechner ◽  
Matthias Baumann ◽  
Eva-Maria Hennes ◽  
Kathrin Schanda ◽  
Markus Reindl ◽  
...  
Keyword(s):  
Children And Adolescents ◽  
Neuromyelitis Optica ◽  
Neuromyelitis Optica Spectrum Disorders ◽  
Spectrum Disorders
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