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Pioglitazone as a Treatment for Lipid and Glucose Abnormalities In Patients With Schizophrenia

Schizophrenia Clinical Trial

Official title:
Pioglitazone as a Treatment for Lipid and Glucose Abnormalities In Patients With Schizophrenia Treated With Antipsychotic Medication And Potential Effects on Cognitive Function

Clinical Trial Summary

This is a study with an approved drug for treating type 2 diabetes, for its effects on treating glucose and lipid abnormalities in patients being treated with first or second-generation antipsychotics, and comparison of effects of this drug with another treatment lifestyle modification. Patients who meet inclusion criteria will be treated with pioglitazone for 12 weeks. They will be evaluated for fasting glucose and lipids, glucose-tolerance tests, and neurocognitive battery and tests of verbal memory at baseline and during treatment with pioglitazone.

Clinical Trial Description

The aim of this study is to investigate the effects of pioglitazone added to weight-lifestyle intervention vs. placebo plus lifestyle intervention on reversing or reducing impaired or abnormal triglycerides, HDL and glucose metabolism in schizophrenics treated with first or second-generation antipsychotics.. Another aim is to examine the effects of impaired glucose metabolism on verbal memory and other cognitive function in schizophrenic patients treated with these medications and the relationship to improvements in impaired glucose metabolism to impairments in cognitive function. Clozapine and olanzapine, and some other first or second-generation antipsychotics effective for treating schizophrenia and bipolar disorders, have been reported to be associated with increased incidence of diabetic type metabolic abnormalities, decreases in insulin sensitivity, and abnormal glucose tolerance tests. This can lead to the development of type 2 diabetes and also abnormal lipid metabolic levels which can lead to atherosclerotic changes and increased risk of cardiovascular disease and other diabetes related complications. Drug treatments which could reduce or correct these diabetic metabolic changes would permit many patients to continue to receive the benefits of these antipsychotic medications with reduced drug-induced comorbidity. Previous research using non-psychotic subjects has shown that diabetes and impaired glucose tolerance are associated with cognitive impairments, especially in verbal memory, and provides a rationale for testing whether corrections of impaired glucose metabolism are associated with cognitive improvements in schizophrenic patients. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00231894
Study type Interventional
Source Nathan Kline Institute for Psychiatric Research
Contact
Status Completed
Phase Phase 4
Start date May 2005
Completion date January 2010
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