期刊
ACTA NEUROPSYCHIATRICA
卷 27, 期 6, 页码 375-379出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/neu.2015.32
关键词
encephalitis; GRIN1; mabthera; N-Methyl-D-aspartic acid; psychosis
资金
- Schizofreniforbundet
- Swedish Research Council
- Hjarnfonden
- Karolinska Institutet
- Karolinska University Hospital
Background: Autoimmune NMDA-R encephalitis (ANRE) shares clinical features with schizophrenia. Recent research also indicates that both disorders are associated with dysfunction of the N-Methyl-D-Aspartate glutamate receptors (NMDA-R) subunit 1. Methods: We present the case of Ms A, 16 years old. Ms A presented with acute personality change, bizarre behaviour, delusional ideas and atypical seizures. She had a family history of psychotic disorders, and autistic traits diagnosed in childhood. She was initially diagnosed with a psychotic disorder. Delayed testing of CSF indicated ANRE. As the patient was a Jehovah's witness the treating team was unable to use gammaglobulin therapy; they instead relied on combined plasmapheresis and rituximab. To exclude the possibility that the affected members of this family shared a gene coding for an abnormal configuration of the NMDA receptor subunit 1 we sequenced the region of the GRIN1 gene in DNA extracted from blood in both Ms A and her grandmother. Results: Ms A's condition improved dramatically, though her long-term memory is still demonstrably impaired. No genetic abnormality was detected. Conclusions: This case emphasizes how important it is, for a first episode psychosis, to exclude ANRE and other autoimmune synaptic encephalitides, even in the face of significant family history, and if seronegative, the importance of testing for CSF autoantibodies.
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