View clinical trials related to Schizophrenia.
Filter by:The purpose of this project is to examine potential mechanisms that may underlie early visual and auditory perception as well as visual and auditory affect perception deficits in schizophrenia and the possible connection between these processes. Given that affect perception largely involves visual and/or auditory information processing and likely relies on intact basic visual and/or auditory perceptual mechanisms, the investigators will examine affect perception deficits within the framework of the more basic visual and auditory processes. Specifically, the investigators will examine magnetophysiological correlates of vocal and visual affect discrimination, non-affective face discrimination and voice discrimination, and simple visual and auditory stimulus discrimination, using Magnetoencephalography (MEG), to identify neural mechanisms underlying perceptual deficits, as well as their contribution to affect perception deficits in schizophrenia.
The purpose of this study is to determine whether the use of atypical antipsychotic medication increases the risk of hospitalization for a hyperglycemic emergency. The investigators will carry out separate population-based cohort studies using administrative health databases in eight jurisdictions in Canada and the UK. Cohort entry will be defined by the initiation of a new antipsychotic medication. Follow-up will continue until hospitalization for a hyperglycemic emergency or the end of 365 days. The results from the separate sites will be combined to provide an overall assessment of the risk of hyperglycemic emergencies among new users of various antipsychotic drugs.
In this study, investigators will examine the behavioral effects and neurophysiological mechanisms of the pro-social neuropeptide oxytocin in patients with recent-onset schizophrenia. Such research is a necessary first step towards identifying whether intranasal oxytocin administration can serve as an adjunct treatment for social impairments in schizophrenia. Aim 1: To quantify the effects of exogenous oxytocin on social cognition and behavior in patients with recent-onset schizophrenia. Hypothesis A: Patients and healthy comparison subjects will show enhanced social cognition (e.g., improved interpretation of paralinguistic and emotional cues, such as those involved in emotional or sarcastic communication) after administration of oxytocin versus placebo. Hypothesis B: Patients and healthy comparison subjects will show increased attention to others' eyes and patients will exhibit increased facial affect expressivity after administration of oxytocin versus placebo. Aim 2: To examine the effects of exogenous oxytocin on persistent negative symptoms in schizophrenia (PNS) activity in patients with recent-onset schizophrenia. Hypothesis A: Patients and healthy comparison subjects will demonstrate increased PNS activity during social tasks after administration of oxytocin versus placebo. Hypothesis B (exploratory): Patients and healthy comparison subjects' improvements in social cognition and behavior will be predicted by the degree to which oxytocin increases their PNS activity.
A randomized controlled, prospective, two-armed, mono-centric, assessor-blinded clinical trial will serve to generate preliminary data on the efficacy and safety of modified psychodynamic therapy (MPP-S) in stabilized patients after the first or subsequent episodes of schizophrenia or schizoaffective disorder.
Individuals with schizophrenia have important and persistent deficits in multiple neurocognitive domains as well as in the Social Cognition (SC). SC refers to the mental operations underlying social behavior, and it is understood as a multidimensional construct that comprises emotional processing (EP), social perspective and knowledge, attributional bias and theory of mind (ToM) or mentalizing. Mentalizing and EP skills have been the two most studied subdomains of SC in schizophrenia. Both domains have been found to be impaired in chronic schizophrenia patients as well as in patients in early stages of the illness. In this context, although negative symptoms may play and important role, females seem to perform better than males in ToM and EP tasks, suggesting the presence of gender differences in the SC skills in patients with schizophrenia. However, to our knowledge, there are no studies that have explored the gender-related differences between cognitive and affective ToM and its relationship with the EP performance in schizophrenia patients of recent diagnosis comparing with healthy subjects. In this line, the main objective of this project is to analyze the influence of gender in the cognitive and affective ToM abilities, in a group of patients with schizophrenia in early stages of the illness comparing with healthy subjects. Secondarily, this study pretends to explore the association between EP skills and affective ToM tasks performance in males and females with and without recent diagnosis of schizophrenia.
The purpose of this study was to evaluate the applicability and usefulness of the guideline treatment for diagnosis and treatment of adolescents with schizophrenia, also to evaluate the compliance to the treatment according to the guidelines, and to compare the treatment compliance, severity of illness and social functioning of patients treated according to guideline treatment vs patients with the treatment as usual on a six month follow up.
Antipsychotics are approved to treat several conditions, including Schizophrenia, Schizoaffective Disorder, Bipolar Disorder, and Major Depressive Disorder among others. The typical and atypical antipsychotics, derive their therapeutic benefit predominantly from the antagonism of dopamine D2 and 5-HT2A receptors. Many of these compounds are associated with common and significant adverse effects (e.g. weight gain, extrapyramidal symptoms, hyperprolactinemia, sexual dysfunction, and cardiac effects) which negatively impact on adherence. Today, antipsychotic induced weight gain (AIWG) is a leading cause for antipsychotic discontinuation. Importantly as well, approximately 20-30% of all patients with schizophrenia do not respond adequately to an initial antipsychotic trial, and strikingly, 83% of those who go on to a second antipsychotic trial do not meet criteria for response. To-date, no RCT has been conducted to evaluate the outcomes in patients taking antipsychotics following the use of pharmacogenomic guidance of treatment selections. Therefore, the rationale for this trial is to utilize a double-blinded RCT design to evaluate and compare the clinical outcomes in participants treated with the benefit of GEN and E-GEN testing. Furthermore, this trial also intends to develop an evidence- based case for the value of GEN and E-GEN to Canadian health-care payers.
The primary goal of the present study is to evaluate the utility of mGluR5 binding as measured by PET as a biomarker of the CNTNAP2 mutation and related /mTOR kinase pathway dysregulation.
The aim of the study is to investigate the temporal organization of autobiographical memory in patients with schizophrenia. Patients and control participants will be invited separately to participate in a 1hour walk in the city of Strasbourg and at the same time, to carry an automatic camera around their neck, which is called SenseCam®. Pictures obtained with SenseCam® will be later presented to the participants during the session of test. They will be asked to determine the chronological order of 12 pictures corresponding to 12 particular events of the tour. Then they will be asked to watch the complete sequence of photos from the tour and to determine the beginning and ending of the events that have occurred during the tour. According to the investigators hypotheses, patients should have difficulty to find out the correct chronological order of the photos and to determine the appropriate beginnings and endings of the events
The specific aim of this proposal is to investigate the neurophysiological mechanisms of oxytocin's (OT) prosocial effects in patients with schizophrenia and healthy subjects using magnetoencephalography. Hypothesis A: When OT is administered to patients with schizophrenia, fear-related amygdala hyperreactivity and fusiform gyrus (FG) and anterior cingulate cortex (ACC) hypoactivity will be normalized. Hypothesis B: When OT is administered to patients with schizophrenia, the decreased functional connectivity (FC) between the amygdala, FG, and ACC will be normalized. By elucidating the neurophysiological mechanisms of OT administration on emotional face processing, investigators will bee able to: 1. understand the pathophysiology of the functionally debilitating social cognitive deficits of schizophrenia, 2. test the efficacy of OT in normalizing the neural abnormalities underlying these social deficits, and 3. develop and optimize novel treatments for these currently untreatable deficits.