Janssen - Glucose Regulation/Risp/Olanz
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Purpose
Abnormalities in peripheral glucose regulation and type 2 diabetes can occur more commonly in individuals with schizophrenia than in healthy subjects or in other psychiatric conditions. Antipsychotic treatment may contribute significantly to abnormalities in glucose regulation. Hyperglycemia can contribute to long-term cardiovascular disease risk that may already be increased in patients with schizophrenia due to higher rates of smoking, sedentary life style, obesity and under-treated hypertension and dyslipidemia. This project will characterize the effects on glucose control of the two most commonly prescribed newer antipsychotic medications, risperidone and olanzapine, in patients with schizophrenia.
This proposal specifically hypothesizes that olanzapine treatment will be associated with decreases in insulin sensitivity (SI), without effects on insulin secretion. Treatment-related effects on glucose effectiveness (SG) will be explored.
| Condition | Intervention |
|---|---|
|
Schizophrenia Type 2 Diabetes Mellitus |
Drug: Risperidone, Olanzapine |
| Study Type: | Interventional |
| Study Design: | Allocation: Non-Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Parallel Assignment Masking: Open Label Primary Purpose: Treatment |
| Official Title: | Glucose Regulation During Risperidone and Olanzapine Treatment |
- Effects of olanzapine/risperidone/haloperidol on glucose regulation.
- Explore Treatment-related effects on glucose effectiveness.
| Enrollment: | 120 |
| Study Start Date: | July 2000 |
| Study Completion Date: | October 2006 |
| Primary Completion Date: | October 2006 (Final data collection date for primary outcome measure) |
This proposal aims to use a well-characterized procedure, the modified Frequently Sampled Intravenous Glucose Tolerance Test (FSIGTT), to characterize the glucoregulatory effects of the two most commonly prescribed atypical antipsychotic medications, risperidone and olanzapine, in comparison to the conventional antipsychotic haloperidol. Abnormalities in peripheral glucose regulation and type 2 diabetes can occur more commonly in individuals with schizophrenia than in healthy subjects or in other psychiatric conditions. While abnormalities in glucose regulation were first reported in schizophrenia prior to the introduction of antipsychotic medications, antipsychotic treatment may contribute significantly to abnormalities in glucose regulation.
Recently, the adverse effect of antipsychotic medications on systemic glucose regulation has received increased attention as investigators noted prominent adverse glucoregulatory effects associated with certain newer antipsychotic medications. Abnormal glucose regulation and new-onset type 2 diabetes have been reported during clozapine and olanzapine treatment. Complicating the study of antipsychotic-induced changes in glucose regulation, increased adiposity can decrease insulin sensitivity, and antipsychotics can increase adiposity and body mass index (BMI). However, abnormal glucose regulation and type 2 diabetes can occur during clozapine treatment in the absence of weight gain, suggesting that changes in glucose regulation can occur independent of drug-induced increases in BMI. Consistent with this, our preliminary studies indicate that important effects of clozapine and olanzapine on glucose regulation are not accounted for by differences in BMI. This proposal will compare the effects of olanzapine, risperidone and haloperidol on well-defined measures of glucose regulation.
This proposal specifically hypothesizes that olanzapine treatment will be associated with decreases in insulin sensitivity (SI), without effects on insulin secretion. Treatment-related effects on glucose effectiveness (SG) will be explored.
Eligibility| Ages Eligible for Study: | 18 Years to 60 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- Patients: meets DSM-IV criteria for schizophrenia, any type, or schizoaffective disorder;
- Aged 18 to 60 years;
- Able to give informed consent;
- No medication changes for 2 weeks prior to and during the period of study; 5. Patients: currently taking olanzapine, risperidone, haloperidol or another typical antipsychotic.
Exclusion Criteria:
- Controls: Axis I psychiatric disorder criteria met except for substance use disorders as below;
- Meets DSM-IV criteria for the diagnoses of substance abuse or dependence within the past six months;
- Involuntary legal status (as per Missouri law);
- The presence of any serious medical disorder that may (as confirmed by peer-reviewed literature) confound the assessment of symptoms, relevant biologic measures or diagnosis; the following conditions are currently identified: insulin- or non-insulin-dependent diabetes mellitus; any intra-abdominal or intrathoracic surgery or limb amputation within the prior 6 months; any diagnosed cardiac condition causing documented hemodynamic compromise; any diagnosed respiratory condition causing documented or clinically recognized hypoxia; pregnancy or high dose estrogens, fever, narcotic therapy, acute sedative hypnotic withdrawal, corticosteroid or spironolactone therapy, dehydration, epilepsy, endocrine disease, high-dose benzodiazepine therapy (> 25 mg/day of diazepam), or any medical condition known to interfere with glucose utilization;
- Meets DSM-IV criteria for Mental Retardation (mild or worse).
Contacts and Locations| United States, Missouri | |
| Washington University School of Medicine, Psychiatry Dept. | |
| St. Louis, Missouri, United States, 63110 | |
| Principal Investigator: | John W. Newcomer, M.D. | Washington University School of Medicine, Psychiatry Dept. |
More Information
Publications:
| Responsible Party: | Washington University School of Medicine |
| ClinicalTrials.gov Identifier: | NCT00205738 History of Changes |
| Other Study ID Numbers: | Janssen IVGTT/940780, 00-0306 |
| Study First Received: | September 13, 2005 |
| Last Updated: | April 11, 2013 |
| Health Authority: | United States: Institutional Review Board |
Keywords provided by Washington University School of Medicine:
|
Schizophrenia BMI T2DM |
Additional relevant MeSH terms:
|
Diabetes Mellitus Diabetes Mellitus, Type 2 Schizophrenia Glucose Metabolism Disorders Metabolic Diseases Endocrine System Diseases Schizophrenia and Disorders with Psychotic Features Mental Disorders Risperidone Olanzapine Serotonin Antagonists Serotonin Agents Neurotransmitter Agents Molecular Mechanisms of Pharmacological Action Pharmacologic Actions |
Physiological Effects of Drugs Antipsychotic Agents Tranquilizing Agents Central Nervous System Depressants Central Nervous System Agents Therapeutic Uses Psychotropic Drugs Dopamine Antagonists Dopamine Agents Serotonin Uptake Inhibitors Neurotransmitter Uptake Inhibitors Antiemetics Autonomic Agents Peripheral Nervous System Agents Gastrointestinal Agents |
ClinicalTrials.gov processed this record on May 23, 2013