Active clinical trials for "Schizophrenia"

The primary objective of this study is to evaluate the efficacy of quetiapine fumarate extended-release (XR) used as mono-therapy, administered once daily, in the treatment of schizophrenic patient with acute episode.

This study is to evaluate the safety and efficacy of the study drug compared to placebo in the treatment of cognitive impairment in men with schizophrenia.

A first generation of clinical studies, performed during the last decade, demonstrates that adjuvant treatment with compounds that enhance NMDAR-mediated neurotransmission due to their agonistic activity at the NMDAR-associated glycine (GLY) site (e.g. GLY, D-serine (DSR)) leads to significant symptom reductions in chronic schizophrenia patients.Furthermore, preliminary findings suggest that treatment with NMDAR-GLY site modulators may also be beneficial as antipsychotic monotherapy In the proposed project, during a three year period, 60 schizophrenia patients that fulfill treatment resistance criteria will be randomly entered in a 10 week, two phase (fixed/flexible dose), parallel group, double blind controlled study assessing the efficacy of olanzapine (OLA) (up to 40 mg/day) vs. DSR (up to 4000 mg/day) as antipsychotic monotherapy.Clinical, neurocognitive, electrophysiological, and amino acids (i.e. GLY, DSR) levels assessments will be performed during the study. The specific aims of the proposed project are: 1) to assess the efficacy and safety of DSR as a new medication for treatment refractory schizophrenia, and 2) to assess DSR effects in terms of relevant amino acids serum levels, neurocognitive performance, and relevant brain electrophysiological parameters. The overall importance of the proposed project consists of its potential to lay the foundations for an innovative type of intervention for treatment resistant schizophrenia patients.

This study will test the usefulness of the medication metformin in treating people with schizophrenia or schizoaffective disorder who are overweight and also taking antipsychotic medications.

The purposes of this study are to characterize the pharmacokinetics of paliperidone after single- and multiple-dose administration of paliperidone ER in children and adolescent patients (>= 10 to <= 17 years of age) with schizophrenia, schizoaffective disorder, or schizophreniform disorder and to evaluate the safety and tolerability of paliperidone ER in this patient population.

The purpose of this study is to characterize the pharmacokinetics of paliperidone in plasma and urine after intravenous (i.v.) administration of the racemate, administration of the immediate-release (IR) racemate oral solution, administration of the ER OROS tablet, and administration of the oral solutions of the individual enantiomers R078543 (+) and R078544 (-); to determine the absolute oral bioavailability of IR and ER OROS paliperidone; to document the (+) and (-) paliperidone enantiomer ratio after i.v. and oral administration (IR and ER OROS paliperidone); to document the possible interconversion between the (+) and (-) enantiomers of paliperidone after oral treatment with the separate enantiomers; to document the possible relationship between the subject's CYP2D6 phenotype and the (+) and (-) enantiomer disposition of paliperidone (CYP2D6 genotyping was used to corroborate the phenotype). In addition, the safety and tolerability of all treatments will be evaluated.

The purpose of this study is to evaluate the dose proportionality of the 3-, 6-, 9-, 12-, and 15-mg tablets of ER OROS paliperidone. Additionally, the safety and tolerability of the treatments in healthy volunteers will be assessed.

This is a 8-week double-blind placebo controlled parallel group study of the efficacy of varenicline (Chantix) for smoking cessation in schizophrenic patients, and its effect on cognitive function in patients with schizophrenia.At some sits evaluation of smoking measures is extended to 12 weeks. Correlations will be made with biological predictors of efficacy: a) measures of nicotinic receptors in lymphocytes b) DNMT1 and GAD67 mRNA in lymphocytes. Subjects will be current cigarette smokers or history of regular smokers.

The purpose of this exploratory study is to evaluate the effects of sertindole and olanzapine on metabolic parameters and syndrome in patients with schizophrenia.

The purpose of the study is to explore the maintained efficacy, tolerability, and safety of flexibly dosed paliperidone extended-release (ER) in participants with schizophrenia (psychiatric disorder with symptoms of emotional instability, detachment from reality, often with delusions and hallucinations, and withdrawal into the self) previously unsuccessfully treated with other oral atypical antipsychotic medication.