Central nervous system-specific antinuclear antibodies in patients with multiple sclerosis

Takayuki Fujii, Ryo Yamasaki, Yukino Miyachi, Satoshi Nagata, Guzailiayi Maimaitijiang, Yuri Nakamura, Koji Shinoda, Takuya Matsushita, Noriko Isobe, Jun ichi Kira

Research output: Contribution to journalArticle

Abstract

Background: Nuclear antigen released from central nervous system (CNS) cells undergoing destruction may induce production of antinuclear antibodies (ANA). We characterized the CNS-specific production of ANA in multiple sclerosis (MS). Methods: We assessed CNS-ANA binding to mouse cerebellar cell nuclei by immunofluorescence assay (IFA) with sera from 104 MS patients (91 relapsing-remitting; 13 secondary progressive), 30 patients with neuromyelitis optica spectrum disorders (NMOSD), and 30 healthy controls (HCs). Conventional ANA (cANA) was detected by IFA using human epithelial type-2 cells. CNS-ANA-positive cANA-negative patients were termed CNS-specific ANA-positive. Western blotting (WB) was performed using mouse cerebellar nuclear fractions. Results: CNS-specific ANA were more frequent in MS than in NMOSD patients or HCs (13.5% vs 0% for both comparisons, both p < .05) and were associated with HLA-DRB1*15:01 (p = .0174). WB revealed a common 55 kDa band in seven MS patients. Compared with CNS-specific ANA-negative MS patients, those with 55 kDa band-immunoreactive CNS-specific ANA showed a higher frequency of secondary progressive MS (42.9% vs 10.0%, p = .0387) and greater Expanded Disability Status Scale scores (4.50 ± 2.02 vs 2.92 ± 2.27, p = .0506). Conclusions: The CNS-specific ANA was more frequently detected in MS patients than NMOSD patients or HCs. 55 kDa band-reactive CNS-specific ANA may reflect clinical disease progression in MS.

Original languageEnglish
Article number116619
JournalJournal of the Neurological Sciences
Volume409
DOIs
Publication statusPublished - Feb 15 2020

All Science Journal Classification (ASJC) codes

  • Neurology
  • Clinical Neurology

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    Fujii, T., Yamasaki, R., Miyachi, Y., Nagata, S., Maimaitijiang, G., Nakamura, Y., Shinoda, K., Matsushita, T., Isobe, N., & Kira, J. I. (2020). Central nervous system-specific antinuclear antibodies in patients with multiple sclerosis. Journal of the Neurological Sciences, 409, [116619]. https://doi.org/10.1016/j.jns.2019.116619