PMID- 19364930 OWN - NLM STAT- MEDLINE DCOM- 20090424 LR - 20090414 IS - 1538-3687 (Electronic) IS - 0003-9942 (Linking) VI - 66 IP - 4 DP - 2009 Apr TI - Diagnostic value of N-methyl-D-aspartate receptor antibodies in women with new-onset epilepsy. PG - 458-64 LID - 10.1001/archneurol.2009.5 [doi] AB - BACKGROUND: In women younger than 45 years, a new form of encephalitis associated with ovarian teratoma and presenting with seizures and psychiatric symptoms has been described. Most patients have antibodies to NR1/NR2 heteromers of the N-methyl-D-aspartate receptor (NMDAR). OBJECTIVE: To assess the frequency and significance of antibodies to NMDAR in otherwise unexplained new-onset epilepsies in young women. DESIGN: Prospective cohort study. SETTING: University department of epileptology. PATIENTS: From January 1, 2005, to June 30, 2007, we identified 19 female patients aged 15 to 45 years with unexplained new-onset epilepsy. In addition, we studied 61 cerebrospinal fluid-serum sample pairs from patients with other cryptogenic epilepsies and 11 cerebrospinal fluid-serum sample pairs from surgically treated patients with epilepsy with no evident encephalitic abnormalities. MAIN OUTCOME MEASURES: Antibodies to NMDAR and characteristics of affected patients. RESULTS: Five of the 19 patients had antibodies against NMDAR. These patients had diffuse cerebral dysfunction and seizure origins. Psychiatric symptoms and pleocytosis were significantly associated with this group of patients. The disease course was episodic, in part relapsing-remitting, with full recoveries either spontaneously or after corticosteroid or intravenous immunoglobulin treatments. Only 1 patient had a neoplasm (multiple neuroendocrine tumors that included the ovaries) identified to date. In the control series, one 22-year-old man with a cryptogenic, severely encephalopathic seizure disorder was NMDAR antibody positive, and he also recovered fully. CONCLUSIONS: Anti-NMDAR encephalitis accounts for a relevant proportion of otherwise unexplained new-onset epilepsies. Patients harboring NMDAR antibodies usually have prominent psychiatric symptoms and pleocytosis, and they may develop hypoventilation. Anti-NMDAR encephalitis is not always paraneoplastic. FAU - Niehusmann, Pitt AU - Niehusmann P AD - Department of Epileptology, University of Bonn, Bonn, Germany. FAU - Dalmau, Josep AU - Dalmau J FAU - Rudlowski, Christian AU - Rudlowski C FAU - Vincent, Angela AU - Vincent A FAU - Elger, Christian E AU - Elger CE FAU - Rossi, Jeffrey E AU - Rossi JE FAU - Bien, Christian G AU - Bien CG LA - eng GR - 2R01CA89054-06A2/CA/NCI NIH HHS/United States GR - R01CA107192/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - Arch Neurol JT - Archives of neurology JID - 0372436 RN - 0 (Autoantibodies) RN - 0 (Potassium Channels, Voltage-Gated) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - EC 4.1.1.15 (Glutamate Decarboxylase) SB - IM MH - Adolescent MH - Adult MH - Age Factors MH - Aged MH - Animals MH - Autoantibodies/*metabolism MH - Case-Control Studies MH - Diagnosis, Differential MH - Epilepsy/diagnosis/*immunology/pathology/surgery MH - Female MH - Glutamate Decarboxylase/immunology MH - Hippocampus/immunology/pathology MH - Humans MH - Male MH - Middle Aged MH - Neuropil/immunology/pathology MH - Paraneoplastic Syndromes/diagnosis/immunology/pathology MH - Potassium Channels, Voltage-Gated/immunology MH - Rats MH - Rats, Wistar MH - Receptors, N-Methyl-D-Aspartate/*immunology MH - Reference Values EDAT- 2009/04/15 09:00 MHDA- 2009/04/25 09:00 CRDT- 2009/04/15 09:00 PHST- 2009/04/15 09:00 [entrez] PHST- 2009/04/15 09:00 [pubmed] PHST- 2009/04/25 09:00 [medline] AID - 66/4/458 [pii] AID - 10.1001/archneurol.2009.5 [doi] PST - ppublish SO - Arch Neurol. 2009 Apr;66(4):458-64. doi: 10.1001/archneurol.2009.5.