Frequency of autoimmune disorders and autoantibodies in patients with neuromyelitis optica.

Abstract:

OBJECTIVE:The aim of this study was to report the frequency of autoimmune disorders and autoantibodies in 22 patients with neuromyelitis optica (NMO), as well as whether the seropositivity for autoantibodies differs between anti-aquaporin 4 (AQP4) positive and AQP4 negative NMO patients. METHODS:Demographic, medical records, and a profile of autoantibodies were evaluated in 22 NMO patients, including AQP4, anti-thyroid-stimulating hormone receptor, antinuclear antibodies (ANA), anti-thyroperoxidase (anti-TPO), anti-thyroglobulin (anti-Tg), anti-double-stranded DNA, anti-neutrophil cytoplasmic, anti-cyclic citrullinate peptide, rheumatoid factor, anti-SSA/Ro, anti-SSB/La, anti-Smith antibodies (anti-Sm), anti-ribonucleoprotein, anti-nucleosome, and anti-Scl70. Thyroid-stimulating hormone and free thyroxin were measured. RESULTS:The frequency of women was higher than men (95.5% vs. 4.5%) and 68.2% were Afro-Brazilians. Six (27.3%) patients presented other autoimmune disorders, such as Hashimoto thyroiditis (n=2), Graves' disease (n=1), juvenile idiopathic arthritis (n=1), systemic lupus erythematosus and systemic sclerosis (n=1), and Raynaud's phenomenon (n=1). The most frequent autoantibodies were anti-AQP4 (54.5%), anti-nucleosome (31.8%), ANA (27.3%), anti-TPO (22.7%), and anti-Tg (22.7%). Difference was not observed in the frequency of autoimmune disorders when the patients were compared according to their anti-AQP4 status. CONCLUSION:The results of the present study underscored that the NMO patients present high frequency of autoantibodies against cellular antigens and the presence of autoimmune disorders. Further studies with large number of NMO patients may contribute to advances in the understanding of NMO disease mechanisms.

journal_name

Acta Neuropsychiatr

journal_title

Acta neuropsychiatrica

authors

Pereira WLCJ,Reiche EMV,Kallaur AP,Oliveira SR,Simão ANC,Lozovoy MAB,Schiavão LJV,Rodrigues PRDVP,Alfieri DF,Flauzino T,Kaimen-Maciel DR

doi

10.1017/neu.2016.49

subject

Has Abstract

pub_date

2017-06-01 00:00:00

pages

170-178

issue

3

eissn

0924-2708

issn

1601-5215

pii

S0924270816000491

journal_volume

29

pub_type

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