Superoxide dismutase activity of serum IgG in acute illness and remission period of schizophrenia

INTRODUCTION: According to recent research violations of the oxidative-antioxidant balance may play an important role in the pathogenesis of schizophrenia, by changing generate, conduct and reproduce a nerve impulse. Antibodies with oxidoreductase activity may be involved in protection against oxidative stress in schizophrenia. OBJECTIVES: The study was to compare the superoxide dismutase (SOD) activity of IgG in patients with acute schizophrenia and during remission. METHODS: The study included 20 patients with acute schizophrenia (mean PANSS total score 94,3±14), 18 people with schizophrenia during remission (mean PANSS total score 54,7±9), and 10 healthy individuals. All participants signed informed consent for the research. Isolation of IgG from blood serum was performed using affinity chromatography on Protein-G-Sepharose columns. The homogeneity of the substances is confirmed by the SDS PAGE method. SOD activity of IgG was carried out spectrophotometrically. Statistical processing was conducted with Statistica v.10. RESULTS: IgG of schizophrenia patients and healthy individuals have a SOD activity and studied activity is proved to be antibodies intrinsic property. The activity of antibodies in acute schizophrenia was 1.7 times higher than in healthy individuals (p<0.05). In patients with schizophrenia during remission SOD activity of IgG was 2.4 times higher than in healthy individuals (p<0.05). CONCLUSIONS: We can assume that in the conditions of oppression antioxidant activity in schizophrenia patients, antibodies partially take over the function of protecting the body from patients with generalized oxidative stress. This work is supported by the Russian Scientific Foundation, grant # 18-15-00053P. DISCLOSURE: No significant relationships.