Obsessive-Compulsive Symptoms in Relation to Duration of Schizophrenia

OBJECTIVES: The aim of this study was to evaluate the psychopathological features such as depression and anxiety in schizophrenics with obsessive-compulsive symptoms (OCS) as well as the severity of OCS according to duration of schizophrenia. METHODS: We randomly selected sixty four inpatients with schizophrenia. We classified the patients into two groups (OCS group, non-OCS group) according to the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS). Clinical and demographic features were evaluated. To assess OCS, Y-BOCS were performed. The Korean version of the Positive and Negative Syndrome Scale(K-PANSS), the Brief Psychiatric Rating Scale (BPRS), the Korean version of the Calgary Depression Scale for Schizophrenia (K-CDSS), the Beck Anxiety Inventory (BAI) and the Satisfaction With Life Scale (SWLS) were conducted. Independent t-test and chi-square test were conducted to compare the two groups. Pearson correlation analysis was performed to examine the relationship between the duration of schizophrenia and the Y-BOCS score. RESULTS: The Y-BOCS, K-CDSS, and BAI scores were higher in the OCS group. There was a significant correlation between the duration of schizophrenia and the Y-BOCS score. CONCLUSIONS: Anxiety and depression symptoms were severe in the OCS group. In addition, the results of this study indicate that the longer duration of schizophrenia, the more severe the OCS. Therefore, the evaluation of OCS in schizophrenics should be accompanied by treatment intervention.

No Association between Val108/158Met Polymorphism on Catechol-O-Methyl Transferase(COMT) Gene and Smooth Pursuit Eye Movement(SPEM) Abnormality in Korean Schizophrenia Patients

OBJECTIVES: We investigated the association of Val108/158Met polymorphism on catechol-O-methyl transferase(COMT) gene with smooth pursuit eye movement(SPEM) abnormality in Korean schizophrenia patients. METHODS: We measured SPEM in 217 Korean schizophrenia patients(male 116, female 101) and divided them into two groups, one was a good SPEM function group and the other was a poor SPEM function group. Then we analyzed Val108/158Met polymorphism on COMT gene. We compared the differences of genotype and allele distributions of the polymorphism on COMT gene between the two groups. RESULTS: The natural logarithm value of signal/noise ratio(Ln S/N ratio) of the good SPEM function group was 4.39+/-0.33(mean+/-s.d.) and that of poor SPEM function group was 3.17+/-0.71. There were no statistically significant differences of age and male/female ratio between the two groups. There were no significant differences of genotype or allele distributions of the Val108/158Met polymorphism on COMT gene between the two schizophrenic groups. CONCLUSIONS: The results suggest that Val108/158Met polymorphism on COMT gene is not related to SPEM function abnormality in schizophrenia.

Association Analysis between P1635 and P1655 Polymorphisms on Dystrobrevin Binding Protein 1(DTNBP1) Gene and Smooth Pursuit Eye Movement(SPEM) Abnormality in Korean Schizophrenia Patients / 대한정신약물학회지

OBJECTIVE: We investigated the association of P1635 and P1655 polymorphisms on dystrobrevin binding protein 1 (DTNBP1) gene with smooth pursuit eye movement (SPEM) abnormality in Korean schizophrenia patients. METHODS: We measured SPEM function in 216 Korean schizophrenia patients (male 116, female 100) and divided them into two groups, one is a good SPEM function group and the other is a poor SPEM function group. We then analyzed P1635 polymorphism and P1655 polymorphism on DTNBP1 gene from their DNAs extracted from their blood. We compared the differences of genotype and allele distributions of the two polymorphisms on DTNBP1 gene between the two groups. RESULTS: The Ln S/N ratio (mean+/-sd) of the good SPEM function group was 4.39+/-0.33 and the ratio of poor SPEM function group was 3.18+/-0.71. There were no statistically significant differences of age and male/female ratio between the two groups. There were no significant differences of genotype or allele distributions of the P1635 polymorphism and P1655 polymorphism on DTNBP1 gene between the two schizophrenia groups divided by SPEM function. CONCLUSION: The results suggest that P1635 polymorphism and P1655 polymorphism on DTNBP1 gene might not be related to SPEM function abnormality in schizophrenia.

Relationship between SNP A and P1763 Polymorphisms on Dystrobrevin Binding Protein 1(DTNBP1) Gene and Smooth Pursuit Eye Movement(SPEM) Abnormality in Korean Schizophrenic Patients

OBJECTIVES: We investigated the association of SNP A and P1763 polymorphisms on dystrobrevin binding protein 1(DTNBP1) gene with smooth pursuit eye movement(SPEM) abnormality in Korean schizophrenic patients. METHODS: We measured SPEM function in 217 Korean schizophrenics(male 116, female 101) and divided them into two groups, one is a good SPEM function group and the other is a poor SPEM function group. We then analyzed SNP A polymorphism and P1763 polymorphism on DTNBP1 gene from their DNAs extracted from their blood. We compared the differences of genotype and allele distributions of the two polymorphisms on DTNBP1 gene between the two groups. RESULTS: The Ln S/N ratio(mean+/-SD) of the good SPEM function group was 4.39+/-0.33 and the ratio of poor SPEM function group was 3.17+/-0.71. There were no statistically significant differences of age and male/female ratio between the two groups. There were no significant differences of genotype or allele distributions of the SNP A polymorphism and P1763 polymorphism on DTNBP1 gene between the two schizophrenic groups divided by SPEM function. CONCLUSION: The results suggest that SNP A polymorphism and P1763 polymorphism on DTNBP1 gene might not be related to SPEM function abnormality in schizophrenia.