Raffaele Balletta

Differential cognitive performances between schizophrenic responders and non-responders to antipsychotics: Correlation with course of the illness, psychopathology, attitude to the treatment and antipsychotics doses

Multiple lines of evidence demonstrate that schizophrenia patients may perform worse than normal controls in several cognitive tasks. However, little is known on putative differences in cognitive functioning between schizophrenia patients responding to antipsychotics and those resistant to the treatment. In this cross-sectional study, 63 subjects (41 schizophrenia and schizoaffective patients and 22 age and sex-matched controls) were enrolled. Patients were divided in resistant (TRS, n=19) and non-resistant to pharmacological treatment (non-TRS, n=22) according to the American Psychiatric Association (APA) criteria for treatment resistance. The Brief Assessment of Cognition in Schizophrenia (BACS) was administered to patients and controls. The following rating scales were administered to schizophrenia patients: the Positive and Negative Syndrome Scale (PANSS), the Drug Attitude Inventory (DAI) and the Subjective Well-being under Neuroleptics (SWN). Statistically significant differences among non-TRS patients, TRS ones, and controls were detected at the BACS. TRS patients performed significantly worse than non-TRS ones on Verbal Memory task, exhibited higher PANSS total and subscales scores and were prescribed higher antipsychotic doses. Poorer performances at the BACS significantly correlated with more severe negative symptoms in TRS but not in non-TRS patients. These results may suggest that TRS patients suffer from a form of the disease with prominent cognitive impairment possibly related to negative symptoms.

Treatment resistant schizophrenia is associated with the worst community functioning among severely-ill highly-disabling psychiatric conditions and is the most relevant predictor of poorer achievements in functional milestones

The aim of this work was to compare achievements in milestones of community functioning in highly disabling psychiatric conditions, including treatment resistant schizophrenia (TRS), schizophrenia (responsive to antipsychotics), bipolar disorder, and anxiety/depressive diseases. Also, we investigated the predictors of community functioning outcomes across several domains. Among consecutive patients screened, 188 met inclusion criteria and 118 ultimately entered the study. Diagnosis of TRS was made by stringent criteria, including historic and perspective evaluations and excluding potential confounding factors. Achievements in functional milestones of everyday living were recorded. Performances in discrete cognitive tasks were assessed. The Positive and Negative Syndrome Scale, the Personal and Social Performance Scale, the Drug Attitude Inventory-10, and the Quality of Life Enjoyment and Satisfaction Questionnaire were administered. TRS patients showed the highest impairment in community functioning among diagnostic groups. TRS was found to have more severe psychopathology, more impaired cognitive functioning, and poorer psychosocial adjustment compared to all the other groups. In the whole sample, the main predictors of community functioning were the diagnostic group (with TRS diagnosis associated with worst functioning) and achievements in the other functional milestones. In psychotic patients, however, the main predictors of community functioning were clinical and psychopathological variables. These results may support the hypothesis that TRS represents a separate schizophrenia subtype, with its own neurobiology, psychopathology and clinical course. Our results identify a group of modifiable predictors to be addressed to prevent community disability.

Efficacy and Clinical Determinants of Antipsychotic Polypharmacy in Psychotic Patients Experiencing an Acute Relapse and Admitted to Hospital Stay: Results from a Cross-Sectional and a Subsequent Longitudinal Pilot Study

Background. Antipsychotic polypharmacy is used in several psychiatric disorders, despite poor evidence existing to support this practice. Aim. We evaluated whether psychotic patients in acute relapse exposed to antipsychotic polypharmacy (AP + AP) showed different demographic, clinical, or psychopathological features compared to those exposed to one antipsychotic (AP) and whether AP + AP patients showed significantly higher improvement compared to AP patients after a 4-week treatment. Methods. Inpatients were subdivided into AP + AP and AP ones. In the cross-sectional step, patients were compared according to demographics, clinical variables, and scores on rating scales. In the longitudinal step, patients remained for 4 weeks under admission medications and were compared for clinical improvement. Results. AP + AP patients were more frequently diagnosed with schizophrenia and mental retardation as a comorbid illness. AP + AP patients were more frequently under first-generation antipsychotics and had worse clinical presentation. After 4 weeks of treatment, both AP + AP and AP patients improved compared to the baseline. However, AP patients scored significantly less than AP + AP patients at the Clinical Global Impression Scale at the 4-week time point but not at the baseline, indicating a treatment-specific improvement. Conclusions. Antipsychotic polypharmacy may be offered to specific types of psychotic patients. However, efficacy of this strategy is limited at best.

EPA-1118 - Knowledge of the illness and its relations with quality of life, social functioning, cognitive performances, and adherence in psychotic patients: Toward effectiveness-focused interventions

Introduction Psychosocial factors are often underestimated in psychotic patients, although they may profoundly influence (and be influenced by) clinical presentation and effectiveness of therapeutic interventions in these people. Objectives To investigate relevance, relationship with clinical presentation and overall quality of life of multiple psychosocial factors in psychotic patients. Aims To evaluate whether knowledge about the illness and utilization of health services are defective in psychotic vs. non-psychotic patients and whether these correlates with the type of psychotic symptoms, cognitive performances, global social functioning, quality of life, and acceptance of pharmacotherapy. Methods Approximately 110 patients were enrolled after written informed consent. Patients were administered the Positive and Negative Syndrome Scale (PANSS), the Personal and Social Performance scale (PSP), the Drug Attitude Inventory (DAI), the Quality of Life Enjoyment and Satisfaction Questionnaire (Q-LES-Q). All patients were also screened for cognitive performances. Patients and relatives completed a questionnaire on knowledge about the illness and on the level of utilization of mental health services. Patients were subdivided in psychotic (cases) and non-psychotic (controls) based on their score on the PANSS. Results Psychotic patients and their relatives showed lower levels of knowledge about the illness. These features were associated with the other variables assessed in a very complex and multidimensional model of reciprocal influences. Conclusions Lack of response to pharmacological treatments and to overall therapeutic interventions in psychotic patients may also depend on multiple psychosocial factors, which may be carefully investigated and become the target of adjunctive, effectiveness-focused interventions.

EPA-1116 - Obesity affects cognitive performances even in the absence of obvious psychopathological alterations. a comparison with schizophrenia subjects and non-affected controls

Introduction Obesity has been associated with cognitive impairment. However, it is not clear whether cognitive impairment may depend on concomitant psychopathology, since several psychiatric conditions, e.g. schizophrenia, include cognitive deficits among their manifestations. Objectives To assess cognitive performances and psychopathology in obese patients, and to compare cognitive alterations in obese patients with those in schizophrenics and controls. Aims To compare cognitive performances in obese patients to normal percentiles. To provide an analysis of correlation with specific psychopathological domains. To evaluate whether cognitive performances in very obese patients were different from those in schizophrenia patients and non-affected controls. Methods 88 obese patients were included. Exclusion criteria were: axis I and II diagnosis; severe medical, neurological, or endocrinology conditions. Patients underwent an extensive battery of cognitive tests and completed the Toronto Alexithymia Scale (TAS-20), the Barratt Impulsiveness Scale (BIS-11), the Beck Depression Inventory (BDI), the State-Trait Anxiety Inventory (STAI). In the second part of the study, very obese patients (BMI>40; n=16) were compared for cognitive performances to schizophrenia patients (n=16) and non-affected controls (n=17). Results Obese patients performed at low percentiles ( Discussion Obese patients show cognitive alterations even in the absence of abnormal psychopathology. Very obese patients share cognitive alterations with schizophrenia patients, which may imply common neurobiological basis.