Antibodies and the brain: anti-N-methyl-D-aspartate receptor antibody and the clinical effects in patients with systemic lupus erythematosus

Current Opinion in Neurology
Yoshiyuki Arinuma

Abstract

Neuropsychiatric manifestations are one of the fatal complications in patients with systemic lupus erythematosus (SLE). However, the diagnosis and monitoring of that aspect of SLE is still challenging, as there are no reliable biomarkers linked to central nervous system (CNS) damage. This review emphasizes potential candidate autoantibodies that appear to be associated with development of behavioral and psychiatric manifestations in SLE patients. Developments in the pathogenesis in SLE, not surprising for this immune disorder, point to specific, autoantibody toxicity. Namely, the discovery of an antibody which reacts with DNA and with the extracellular domain of N-methyl-D-aspartate (NMDA) receptor subunit GluN2A and 2B (anti-NMDA), an important receptor on neurons that is ubiquitous in the CNS, may lead to new insights into the behavioral and psychiatric manifestations in SLE. These anti-NMDA antibodies induce neuronal apoptosis and degeneration of surviving neurons in murine models. This functional antibody is also detected in SLE patients who have behavioral and psychiatric manifestations. The presence of anti-NMDA in cerebrospinal fluid but not in serum is associated significantly with overwhelming CNS abnormalities, sugges...Continue Reading

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Jun 27, 2018·Postgraduate Medicine·Enrico Maria ZardiDomenico Maria Zardi
Feb 4, 2021·Journal of Immunology Research·Shangzhu ZhangXiaofeng Zeng
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