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2015 ; 9
(ä): 476
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Immunological findings in psychotic syndromes: a tertiary care hospital s CSF
sample of 180 patients
#MMPMID26441585
Endres D
; Perlov E
; Baumgartner A
; Hottenrott T
; Dersch R
; Stich O
; Tebartz van Elst L
Front Hum Neurosci
2015[]; 9
(ä): 476
PMID26441585
show ga
Immunological mechanisms and therapy approaches in psychotic syndromes were
recently supported by the discovery of autoantibody-associated limbic and
non-limbic encephalitis. However, how clinical diagnostic procedures in
psychiatry should be adapted to these new insights is still unclear. In this
study, we analyzed the cerebrospinal fluid (CSF) and neuroimmunological
alterations and their association with cerebral MRI (cMRI) and
electroencephalographic (EEG) findings. From 2006 to 2013, we acquired 180 CSF
samples from psychotic patients. Between 2006 and 2009, CSF examinations were
only performed in cases in which organic brain disease was suspected. Since then,
this procedure has been integrated into our routine diagnostic workup. CSF basic
diagnostics were supplemented by measuring antineuronal antibodies against
intracellular synaptic antigens, antibodies against intracellular onconeural
antigens, antibodies against neuronal cell surface antigens and thyroid
antibodies. In addition, cMRIs and EEGs were conducted. We found white cell
counts elevated in 3.4% of the cases, albumin quotient elevated in 21.8%, and
protein concentration elevated in 42.2%. Evidence of intrathecal immunoglobulin
synthesis was found in 7.2% of the cases. Antibodies measured against neuronal
cell surface antigens were positive in 3.2%. Reactivity on antibodies against
intracellular onconeural antigens were detected in 3.5%. Serum thyroid antibodies
were elevated in 24.7%. Abnormalities were found in 39.5% of cMRIs and in 34.3%
of EEGs. The main finding of our study was the high prevalence of CSF and
autoantibody abnormalities in 54.4% of psychotic patients. In combination with
cMRIs and EEGs, 75.6% showed abnormal findings. Our results are discussed with
regard to the concept of immunological encephalopathy. Future studies should
analyze the efficacy of immunomodulatory therapies.