Clinical, Neuroimmunologic, and CSF Investigations in First Episode Psychosis.
Adolescent
Adult
Aged
Anti-N-Methyl-D-Aspartate Receptor Encephalitis
/ psychology
Antibodies
/ analysis
Autoantibodies
/ analysis
Autoimmune Diseases
/ cerebrospinal fluid
Electroencephalography
Female
Humans
Immunoglobulin G
/ immunology
Immunohistochemistry
Magnetic Resonance Imaging
Male
Middle Aged
Prospective Studies
Psychotic Disorders
/ cerebrospinal fluid
Receptors, N-Methyl-D-Aspartate
/ immunology
Young Adult
Journal
Neurology
ISSN: 1526-632X
Titre abrégé: Neurology
Pays: United States
ID NLM: 0401060
Informations de publication
Date de publication:
06 07 2021
06 07 2021
Historique:
received:
02
12
2020
accepted:
26
03
2021
pubmed:
14
5
2021
medline:
24
7
2021
entrez:
13
5
2021
Statut:
ppublish
Résumé
To report the neuropsychiatric features and frequency of NMDA receptor (NMDAR) and other neuronal immunoglobulin G antibodies in patients with first episode psychosis (FEP) and to assess the performance of reported warning signs and criteria for autoimmune psychosis (AP). This was a prospective observational study of patients with FEP assessed for neuropsychiatric symptoms, serum and CSF neuronal antibodies (brain immunohistochemistry, cell-based assays, live neurons), and warning signs and criteria of AP. Previous autoimmune FEP series were reviewed. One hundred five patients were included; their median age was 30 (range 14-75) years, and 44 (42%) were female. None had neuronal antibodies. Two of 105 (2%) had CSF pleocytosis, 4 of 100 (4%) had brain MRI abnormalities, and 3 of 73 (4%) EEG alterations. Thirty-four (32%) and 39 (37%) patients fulfilled 2 sets of warning signs of AP, and 21 (20%) fulfilled criteria of possible or probable AP, yet none developed AP. The cause of FEP was psychiatric in 101 (96%) and nonpsychiatric in 4 (4%). During this study, 3 patients with psychosis caused by anti-NMDAR encephalitis were transferred to our center; 2 did not meet criteria for possible AP. Of 1,159 reported patients with FEP, only 7 (1%) had CSF studies; 36 (3%) had serum NMDAR antibodies (without definite diagnosis of AP), and 4 had CSF NMDAR antibodies (3 classic anti-NMDAR encephalitis and 1 with isolated psychiatric features). NMDAR antibodies were not found in patients with FEP unless they had anti-NMDAR encephalitis. Warning signs and criteria for AP have limited utility when neurologic symptoms are absent or paraclinical tests are normal. A diagnostic algorithm for autoimmune FEP is provided.
Identifiants
pubmed: 33980703
pii: WNL.0000000000012191
doi: 10.1212/WNL.0000000000012191
doi:
Substances chimiques
Antibodies
0
Autoantibodies
0
Immunoglobulin G
0
Receptors, N-Methyl-D-Aspartate
0
Types de publication
Case Reports
Journal Article
Observational Study
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e61-e75Commentaires et corrections
Type : CommentIn
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Informations de copyright
© 2021 American Academy of Neurology.