The Interference of Negative Symptoms of Schizophrenia on Cognitive Domains: a Long-Term Observational Study on the Role of Clozapine.

The negative symptoms of schizophrenia are responsible for patients' worse quality of life. The association with cognitive deficits impairs clinical and psychopathological conditions. Our small 5-year observational study evaluated the efficacy of clozapine in negative and cognitive symptoms in schizophrenia inpatients. The overall results showed a significant improvement in the mean total scores of the BNSS and PANSS (at baseline (T0) vs five years (T3)). The improvement was also in some negative subscales (PANSS Negative Factor subscale) but not in others and the Epitrack tool. The overall results showed that clozapine is a useful therapeutic tool that does not affect the cognitive decline of these patients.

Metabolic Alterations and Drug Interactions: The Role of the Association between Antipsychotics / Mood Stabilizers and Cognitive Deficits.

Alterations in the metabolic profile are one of the main consequences of the use of drug therapies in psychiatric patients. In particular, dysfunction of the metabolic profile (lipid and glycidic) is very frequent in patients taking antipsychotics, especially second-generation ones, and antidepressants. Similar alterations, albeit, to a lesser extent, were highlighted with the use of mood stabilizers. There are some clinical conditions in which clinicians add antipsychotics and mood stabilizers. Our study analyzed this interaction in 116 inpatients. Data showed an overall increase in metabolic parameters in all patients analyzed. However, no statistically significant differences were found in some subgroups of patients. The correlation between metabolic alterations and cognitive dysfunctions in these patients was also analyzed (not statistically significant).