What question did this study set out to answer?

To investigate the presence, epitope specificity, and diagnostic specificity of autoantibodies against the NMDA receptor GluR epsilon2 subunit in serum and cerebrospinal fluid of patients with chronic epilepsia partialis continua.

October 14, 2003Neurology

Autoantibodies to NMDA receptor in patients with chronic forms of epilepsia partialis continua

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Authors

YTYukitoshi TakahashiNational Epilepsy Center HMHisashi MoriUniversity of Toyama MMMasayoshi MishinaRitsumeikan University

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Implication

Observational study reveals NMDA GluR epsilon2 autoantibodies across chronic epilepsia partialis continua syndromes, suggesting CNS autoantibody generation follows immune-mediated neuronal damage.

Key Points

To investigate the presence, epitope specificity, and diagnostic specificity of autoantibodies against the NMDA receptor GluR epsilon2 subunit in serum and cerebrospinal fluid of patients with chronic epilepsia partialis continua.
Analyzed serum and cerebrospinal fluid (CSF) samples from 15 patients with chronic epilepsia partialis continua (EPC), including histologically proven Rasmussen's encephalitis (n=3), clinical Rasmussen's encephalitis (n=7), acute encephalitis/encephalopathy (n=3), and nonprogressive EPC (n=2).
Included comparison cohorts consisting of 17 patients with West syndrome, 10 with Lennox-Gastaut syndrome, and 11 control subjects.
Performed epitope mapping to characterize autoantibody recognition of N-terminal and C-terminal GluR epsilon2 domains across disease courses.
NMDA-type GluR epsilon2 autoantibodies were detected in 13 of 15 patients with chronic EPC (3/3 histologically proven Rasmussen's, 6/7 clinical Rasmussen's, 2/3 acute encephalitis/encephalopathy, and 2/2 nonprogressive EPC), but in 0 of 17 with West syndrome, 0 of 10 with Lennox-Gastaut syndrome, and 0 of 11 controls.
Serum IgM autoantibodies appeared during the early stage of EPC and subsequently became undetectable in 4 patients.
Epitope profiling demonstrated antibodies predominantly targeted C-terminal regions, with CSF displaying a broader recognition spectrum than serum and an expanding epitope repertoire as disease progressed.

Cite This Study

Takahashi et al. (2003) studied this question.

synapsesocial.com/papers/6a9195b787dfe5d232f14516 https://doi.org/10.1212/01.wnl.0000086819.53078.70

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Implication

Observational study reveals NMDA GluR epsilon2 autoantibodies across chronic epilepsia partialis continua syndromes, suggesting CNS autoantibody generation follows immune-mediated neuronal damage.

Autoantibodies to NMDA receptor in patients with chronic forms of epilepsia partialis continua

Discussion

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Implication

Key Points

Cite This Study

Autoantibodies to NMDA receptor in patients with chronic forms of epilepsia partialis continua

Discussion

Member takes

Implication

Key Points

Cite This Study

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