Understanding the Antibody Repertoire in Neuropsychiatric Systemic Lupus Erythematosus and Neuromyelitis Optica Spectrum Disorder: Do They Share Common Targets?

Arthritis & Rheumatology
Simone MaderBetty Diamond

Abstract

IgG anti-DWEYS antibodies cross-reactive with DNA and the N-methyl-d-aspartate receptor subunits GluN2A and GluN2B are known to be associated with neuropsychiatric systemic lupus erythematosus (NPSLE). IgG anti-DWEYS have not been investigated in demyelinating NPSLE or in another demyelinating disorder, neuromyelitis optica spectrum disorder (NMOSD), which is a disease also found mainly in young women and associated with aquaporin 4 (AQP-4) or myelin oligodendrocyte glycoprotein (MOG) antibodies. This study was undertaken to investigate the frequency of all of these brain-reactive antibodies in patients with NPSLE, those with demyelinating NPSLE, and those with NMOSD. Serum samples from patients with NPSLE (n = 108), patients with SLE without neuropsychiatric manifestations (n = 38), patients with NMOSD (n = 33), and healthy controls (n = 106) were assessed for the frequency of IgG anti-brain antibodies as well as IgG antibodies to AQP-4, MOG, GluN2A/GluN2B, and double-stranded DNA (dsDNA). Sera were positive for IgG anti-AQP-4 antibodies in 27 (82%) of 33 patients with NMOSD and 3 (27%) of 11 patients with demyelinating NPSLE, whereas all sera from patients with non-demyelinating NPSLE, patients with SLE, and healthy controls ...Continue Reading

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Citations

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