Active clinical trials for "Schizophrenia"

The purpose of the study is to assess and compare the side effect profile, safety, tolerability and efficacy of schizophrenic or schizoaffective subjects non- or partially- responsive to 800 mg/day of quetiapine treated with either 800 mg/day or more than 800 mg/day of quetiapine during 8 weeks.

It has been suggested that patients with schizophrenia smoke in order to produce amelioration of dysfunctional dopaminergic pathways allowing them to experience pleasure and satisfaction and overcome anhedonia. No studies have assessed the effects of nicotine withdrawal on reward responsivity in patients with schizophrenia. The investigators believe that an understanding of this is crucial if improved treatments for nicotine dependence are to be developed for this patient population. If this group already has deficits in reward responsivity as a symptom of the disease then they may be particularly prone to the effects of nicotine withdrawal on reward systems. Smoking cessation may lead to a further decrease in their responsivity to pleasurable stimuli and worsening anhedonia. Treatments for smoking cessation may need to ameliorate any increased deficits if they are likely to be effective in patients with schizophrenia.

The purpose of the study is to determine whether addition of sertindole to clozapine treatment can improve psychosis or the metabolic side-effects of clozapine in patients with treatment-resistant schizophrenia.

The purpose of this study is to evaluate the outcome of medication discontinuation, the safety and effectiveness of re-initiating risperidone long acting injection (RLAI) in case of relapse (the return of a medical problem) of schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self) during the study observation period of 36 months.

This study evaluated the effectiveness of Cognitive Behavioral Social Skills Training versus goal-focused supportive contact in improving social functioning in people with schizophrenia.

We initiate a study with research grant from department of health and Taoyuan mental hospital and choose risperidone and olanzapine as study medications. We compare the incidence of using anticholinergic drugs in schizophrenic patients of Han ethnics with neuroleptic-induced acute dystonia or parkinsonism to test the hypothesis that these two medications have different EPS incidence in EPS intolerant population.

Primary purpose: To find out how effective is long term treatment with amisulpride on the positive and negative symptoms in schizophrenic patients To find out how safe is long term treatment with amisulpride in schizophrenic patients Secondary purpose: To find out how effective is long term treatment with amisulpride on the quality of life in schizophrenic patients To find out how effective is long term treatment with amisulpride on the cognitive function in schizophrenic patients

This project aims to a) evaluate the effects of selected antipsychotic medications on insulin action in skeletal muscle (glucose disposal), liver (glucose production) and adipose tissue (whole-body lipolysis), b) evaluate the effects of selected antipsychotic medications on abdominal adipose tissue mass, total body fat and total fat-free mass, and c) explore the longitudinal effects of treatment with selected antipsychotics on glucose tolerance, lipid profiles, abdominal adipose tissue mass, total body fat and total fat-free mass. These hypotheses will be evaluated by measuring 1) whole-body glucose and lipid kinetics with the use of "gold-standard" stable isotope tracer methodology, 2) body composition using dual energy x-ray absorptiometry and magnetic resonance imaging, and 3) longitudinal changes in glucose tolerance and lipid profiles. The aims will be addressed in non-diabetic schizophrenia patients chronically treated with risperidone, olanzapine, clozapine, quetiapine, ziprasidone, or haloperidol, and untreated healthy controls. Re-evaluations will also be performed in patients who are randomized to switch from their current antipsychotic (from the above groups) to risperidone, olanzapine, quetiapine, or ziprasidone for 6 months. Relevant data is critically needed to target basic research, identify long-term cardiovascular consequences, and plan therapeutic interventions.

This project will assess the utility of a brief motivational intervention to engage smokers with schizophrenia in treatment for tobacco dependence treatment. It is hypothesized that a brief motivational intervention will be more effective in engaging smokers with schizophrenia to tobacco dependence treatment than an educational intervention. The educational intervention will increase the likelihood to reducing cigarette intake and/or attending tobacco dependence treatment by teaching subjects about the negative effects of smoking and the success of tobacco dependence treatment. The motivational intervention will increase the likelihood to reducing cigarette intake and/or attending tobacco dependence treatment by increasing subjects' motivation to change by presenting objective and personalized information regarding their smoking behaviors in a non-judgmental and supportive manner.

The purpose of this trial is to determine if paliperidone ER is an effective treatment for adults with schizophrenia.