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Related Experiment Video

Updated: Jun 13, 2026

A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate (NMDA) Receptor in Blood

A Simple Cell-based Immunofluorescence Assay to Detect Autoantibody Against the N-Methyl-D-Aspartate (NMDA) Receptor in Blood

Published on: January 9, 2018

[Update on anti-NMDA receptor encephalitis].

Takahiro Iizuka¹, Fumihiko Sakai, Hideki Mochizuki

¹Department of Neurology, School of Medicine, Kitasato University, 1-15-1 Kitasato, Sagamihara, Kanagawa 228-8555, Japan.

Brain and Nerve = Shinkei Kenkyu No Shinpo

|April 28, 2010

Summary

Antibodies targeting N-methyl-D-aspartic acid receptors (NMDAR) cause a distinct encephalitis. Early tumor resection and immunotherapy improve recovery from this autoimmune neurological disorder.

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High-throughput Flow Cytometry Cell-based Assay to Detect Antibodies to N-Methyl-D-aspartate Receptor or Dopamine-2 Receptor in Human Serum

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Hippocampal Neuronal Cultures to Detect and Study New Pathogenic Antibodies Involved in Autoimmune Encephalitis

Hippocampal Neuronal Cultures to Detect and Study New Pathogenic Antibodies Involved in Autoimmune Encephalitis

Published on: June 2, 2022

Area of Science:

Neuroimmunology
Neurology
Immunology

Background:

Treatment-responsive encephalitis is linked to antibodies against neuronal cell membrane antigens.
Anti-N-methyl-D-aspartic acid receptor (NMDAR) encephalitis presents with characteristic sequential symptoms.

Purpose of the Study:

To investigate the mechanism of anti-NMDAR encephalitis.
To explore potential therapeutic strategies for anti-NMDAR encephalitis.

Main Methods:

Analysis of antibody targets and epitope mapping.
Cell culture studies to assess antibody effects on NMDARs.
Review of clinical presentation and treatment outcomes.

Main Results:

Antibodies target the extracellular N-terminal domain of the NR1 subunit of NMDAR.
Antibodies reduce postsynaptic NMDAR clusters reversibly without complement activation.
Inhibition of NMDARs on various neurons may cause neuropsychiatric symptoms and dyskinesias.

Conclusions:

Anti-NMDAR encephalitis involves antibody-mediated disruption of NMDAR function and potentially other receptors.
Early tumor resection and immunotherapy are crucial for functional recovery.
Further research, including animal models, is needed to fully elucidate the mechanisms.