Active clinical trials for "Schizophrenia"

This study is a 12-week, double-blind, placebo-controlled trial of L-methylfolate 15 mg/d supplementation in schizophrenia patients with mild or greater negative symptoms. L-methylfolate, a prescription medical food, is the activated form of folate required for conversion of homocysteine to methionine and hence is the optimal form of folate for supplementation, since it eliminates the need for activation by MTHFR. The purpose of this study is to examine the change in plasma L-methylfolate concentrations following a three-month trial of L-methylfolate 15 mg/d compared to placebo.

The purpose of this study is to evaluate the safety, tolerability, and pharmacokinetics of multiple ascending doses of PF-04802540 administered orally to subjects with schizophrenia.

This study examines the interactive effects of ketamine and nicotine.

The purpose of this study is to determine if individuals with serious mental illnesses exposed to a patient-centered computerized tool versus printed educational materials have higher rates of screening for the metabolic side effects of second-generation antipsychotic medications and different patterns of communication with their prescribers about screening.

The objective of this study is to compare the modulation of pergolide, a D1/D2 receptor agonist, to placebo in non-acute schizophrenic subjects under concomitant therapy with atypical antipsychotics on specific PFC functions. Further aims are to assess the influence of pergolide on psychopathology and extrapyramidal symptoms in comparison to placebo.

The purpose of this study is to obtain data on equivalence of generic clozapine to Fazaclo (orally disintegrating tablet). Generic clozapine is the most frequently used clozapine and such data is important for clinicians to have.

The purpose of this study is to determine whether individual and/ or system orientated interventions can help the problem of people with schizophrenia dropping out of their drug treatment

This study is looking at problems people sometimes have taking in information from their senses. Specifically, we are comparing the way in which people diagnosed with schizophrenia process sound information, compared with people who have never been diagnosed with a psychiatric disorder. When people hear a loud sound they sometimes feel startled, and when they feel startled they usually blink their eyes. However, if they hear a softer sound shortly before the loud one they may not blink their eyes - in other words, the eye-blink response is smaller. When this happens it's called prepulse inhibition of startle. In this study, we want to measure the startle response and prepulse inhibition of startle in individuals diagnosed with schizophrenia versus individuals not diagnosed with schizophrenia. We also want to find out whether people show the same amount of prepulse inhibition of startle as other members of their family.

The objective of this study is to develop an exploratory design for future Proof-of-Concept trials which reliably and accurately measure the central nervous system (CNS) effects of potentially new drugs that oppose the effects of ketamine at a subanesthetic dose level given to healthy volunteers. A functional magnetic resonance imaging (fMRI) and electroencephalogram (EEG) performed simultaneously during a ketamine challenge will register the effects triggered by Ketamine.

The lifetime of substance use disorders in schizophrenia is close to 50%. Substance abuse in schizophrenia is associated with negative consequences. Unfortunately, there no clear guidelines for the pharmacological treatment of this dual diagnosis population. Preliminary results suggest that second-generation antipsychotic drugs (mainly clozapine) may relieve drug cravings in schizophrenia. We performed a 12-week pilot study to evaluate the impact of quetiapine, a second-generation antipsychotic, on substance abuse parameters, psychiatric symptoms and side effects in patients schizophrenia and comorbid substance use disorders. Our expectation was a 20 % decrease in drug cravings from baseline to end-point.