Analysis of anti-neuronal antibodies in neuropsychiatric systemic lupus erythematosu

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In the current studies, we first demonstrated that cerebrospinal fluid anti-NR2 levels were significantly higher in patients with lupuspsychosis than in control groups, suggesting that anti-NR2 antibodies might play a pivotalrole in the pathogenesis of lupus psychosis. Using a proteomics approach, we next pickedup several antigens, including peroxiredoxin-4, ubiquitin carboxyl-terminal hydrolaseisozyme L1, splicing factor arginine/serine-rich 3, and histone H2A type 1, as candidates for the autoantigens of anti-neuronal antibodies. Finally, we disclosed that thatanti-ribosomal P antibodies induced Th1 responses by upregulating the production of IL-12 by activated monocytes.