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Evidence for antibody-mediated pathogenesis in anti-NMDAR encephalitis associated with ovarian teratoma

Open access
Tüzün, Erdem, Zhou, Lei, Baehring, Joachim M., Bannykh, Serguei, Rosenfeld, Myrna R., Dalmau, Josep·2009·Acta Neuropathologica

Abstract

We report the immunopathological analysis of the brain and tumor of two patients who died of anti-NMDAR-associated encephalitis, and of the tumor of nine patients who recovered. Findings included prominent microgliosis and deposits of IgG with rare inflammatory infiltrates in the hippocampus, forebrain, basal ganglia, and spinal cord. Detection of cells expressing markers of cytotoxicity (TIA, granzyme B, perforin and Fas/Fas ligand) was extremely uncommon. All tumors showed NMDAR-expressing neurons and inflammatory infiltrates. All patients’ NMDAR antibodies were IgG1, IgG2, or IgG3. No complement deposits were observed in any of the central nervous system regions examined. Overall, these findings coupled with recently reported in vitro data showing that antibodies downregulate the levels of NMDA receptors suggest that the antibody immune-response is more relevant than cytotoxic T-cell mechanisms in the pathogenesis of anti-NMDAR-associated encephalitis.

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Metadata

Authors
Tüzün, E., Zhou, L., Baehring, J. M., Bannykh, S., Rosenfeld, M. R., & Dalmau, J.
Venue
Acta Neuropathologica
Published
2009-08-14
Volume
118
Issue
6
Pages
737-743
ISSN
  • 0001-6322 (ISSN-L)
  • 1432-0533
OpenAlex
W2072597173
Cited by
360
References
2
FWCI
11.06
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Evidence for antibody-mediated pathogenesis in anti-NMDAR encephalitis associated with ovarian teratoma. https://app.cochat.ai/papers/10.1007/s00401-009-0582-4
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Tüzün, E., Zhou, L., Baehring, J. M., Bannykh, S., Rosenfeld, M. R., & Dalmau, J. (2009). Evidence for antibody-mediated pathogenesis in anti-NMDAR encephalitis associated with ovarian teratoma. Acta Neuropathologica. https://doi.org/10.1007/s00401-009-0582-4

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