ABSTRACT
BACKGROUND: Negative symptoms (NS) represent a detrimental symptomatic domain in schizophrenia affecting social and occupational outcomes. AIMS: We aimed to identify factors from the baseline visit (V1) - with a mean illness duration of 0.47 years (SD = 0.45) - that predict the magnitude of NS at the follow-up visit (V3), occurring 4.4 years later (mean +/- 0.45). METHOD: Using longitudinal data from 77 first-episode schizophrenia spectrum patients, we analysed eight predictors of NS severity at V3: (1) the age at disease onset, (2) age at V1, (3) sex, (4) diagnosis, (5) NS severity at V1, (6) the dose of antipsychotic medication at V3, (7) hospitalisation days before V1 and; (8) the duration of untreated psychosis /DUP/). Secondly, using a multiple linear regression model, we studied the longitudinal relationship between such identified predictors and NS severity at V3 using a multiple linear regression model. RESULTS: DUP (Pearson's r = 0.37, p = 0.001) and NS severity at V1 (Pearson's r = 0.49, p < 0.001) survived correction for multiple comparisons. The logarithmic-like relationship between DUP and NS was responsible for the initial stunning incremental contribution of DUP to the severity of NS. For DUP < 6 months, with the sharpest DUP/NS correlation, prolonging DUP by five days resulted in a measurable one-point increase in the 6-item negative symptoms PANSS domain assessed 4.9 (+/- 0.6) years after the illness onset. Prolongation of DUP to 14.7 days doubled this NS gain, whereas 39 days longer DUP tripled NS increase. CONCLUSION: The results suggest the petrification of NS during the early stages of the schizophrenia spectrum and a crucial dependence of this symptom domain on DUP. These findings are clinically significant and highlight the need for primary preventive actions.
Subject(s)
Antipsychotic Agents , Nijmegen Breakage Syndrome , Psychotic Disorders , Schizophrenia , Humans , Nijmegen Breakage Syndrome/drug therapy , Psychotic Disorders/diagnosis , Psychotic Disorders/drug therapy , Schizophrenia/diagnosis , Schizophrenia/drug therapy , Antipsychotic Agents/therapeutic use , Multivariate AnalysisABSTRACT
OBJECTIVE: The authors examined current knowledge about psychoeducation for schizophrenia in Czech Republic. METHODS: The authors sent a screening survey to 550 mental health-care facilities and administered a detailed questionnaire to 113 providers of mental health and social services and to 200 service users. The authors also carried out 14 focus groups and 16 individual interviews. RESULTS: Forty-six departments provided some type of psychoeducation for schizophrenia; of these, 16 provided family psychoeducation for patients and relatives and 1 provided psychoeducation only for relatives. Service users who received psychoeducation performed significantly better in the test of knowledge than did service users who did not receive psychoeducation. CONCLUSION: The authors propose a service user-driven curriculum based on information delivery followed by skills training. Psychiatrists should learn to explain schizophrenia relapse neurobiology to laypeople and to address relatives' frustrations.
Subject(s)
Caregivers/education , Patient Education as Topic/methods , Psychiatry/education , Schizophrenia , Attitude of Health Personnel , Clinical Competence , Czech Republic , Data Collection , Emotional Intelligence , Focus Groups , Health Knowledge, Attitudes, Practice , Humans , Mental Health Services , Needs Assessment , Prognosis , Schizophrenia/diagnosis , Schizophrenia/therapy , Social Work, Psychiatric/education , Social Work, Psychiatric/methods , Surveys and QuestionnairesABSTRACT
BACKGROUND: The phenomenology of the clinical symptoms indicates that disturbance of the sense of self be a core marker of schizophrenia. AIMS: To compare neural activity related to the self/other-agency judgment in patients with first-episode schizophrenia-spectrum disorders (FES, n = 35) and healthy controls (HC, n = 35). METHOD: A functional magnetic resonance imaging (fMRI) using motor task with temporal distortion of the visual feedback was employed. A task-related functional connectivity was analyzed with the use of independent component analysis (ICA). RESULTS: (1) During self-agency experience, FES showed a deficit in cortical activation in medial frontal gyrus (BA 10) and posterior cingulate gyrus, (BA 31; P < .05, Family-Wise Error [FWE] corrected). (2) Pooled-sample task-related ICA revealed that the self/other-agency judgment was dependent upon anti-correlated default mode and central-executive networks (DMN/CEN) dynamic switching. This antagonistic mechanism was substantially impaired in FES during the task. DISCUSSION: During self-agency experience, FES demonstrate deficit in engagement of cortical midline structures along with substantial attenuation of anti-correlated DMN/CEN activity underlying normal self/other-agency discriminative processes.