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Anti-ribosomal P antibody in schizophrenia
Yaron Gilat1, Yehuda Shoenfeld, Moshe Kotler
1Brill Mental Health Community Center, Ramat Chen, Tel Aviv, Israel.
Background:
A series of epidemiological, clinical and laboratory findings suggest an autoimmune process in schizophrenia and include, among others, high titers of various autoantibodies in the sera of patients. Antiribosomal P antibody is known to exist in systemic lupus erythematosus (SLE) patients with a psychiatric presentation, including psychosis, rationalizing the examination of its existence in patients with schizophrenia.
Methods:
Sera of 59 patients, 48 diagnosed with schizophrenia and 11 diagnosed with a schizoaffective disorder, were examined for the presence of antiribosomal P antibody titers using ELISA. The control group consisted of 94 healthy subjects with similar age and gender distribution.
Results:
Anti-ribosomal P antibody titers were below cut-off level in 58 patients and borderline in one patient, similar to the low titers of the control group.
Conclusions:
Previous investigations have demonstrated high specificity for anti-ribosomal P antibody in SLE patients with psychosis. In view of the results of this study, however, anti-ribosomal P antibody is not a biological marker for schizophrenia.
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