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| ID | Type | Description | Link |
|---|---|---|---|
| DPMC |
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Many individuals with schizophrenia smoke cigarettes. Individuals in the schizophrenic population often find it difficult to quit smoking. The purpose of this trial is to determine the safety and effectiveness of bupropion in treating individuals with schizophrenia who smoke.
Schizophrenia affects 1 % of the population. Among individuals with schizophrenia, between 74 and 92 % smoke cigarettes regularly. Heavy smoking represents a significant and neglected public health problem for people with schizophrenia; smoking cessation treatment is often overlooked as part of the psychiatric care for such individuals.
The most effective treatment for smoking cessation described to date is sustained release (SR) bupropion. Past research suggests that SR bupropion may be especially effective in individuals with depressive symptoms, including individuals with schizophrenia. The purpose of this trial is to evaluate the safety and efficacy of SR bupropion, when combined with cognitive behavioral therapy (CBT), in individuals with schizophrenia.
This trial will last 12 weeks. Participants will be randomly assigned to receive SR bupropion or placebo. All participants will receive weekly CBT. Participants will be followed for 3 months following completion of the 12-week treatment session.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| I | Experimental | Experiment group received 300 mgs of bupropion, in addition to weekly CBT and nicotine replacement therapy |
|
| II | Placebo Comparator | Placebo group received placebo, in addition to weekly CBT and nicotine replacement therapy |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| bupropion SR | Drug | Participants were randomly assigned to receive bupropion SR 150 mg or placebo, once daily for 7 days, then twice daily for 11 weeks. |
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| Measure | Description | Time Frame |
|---|---|---|
| seven-day point prevalence of smoking reduction, defined as 50 % reduction in serum cotinine levels compared to baseline | end of treatment |
| Measure | Description | Time Frame |
|---|---|---|
| continuous smoking reduction (50 % reduction in weekly expired air carbon monoxide (CO) measurements compared to baseline and self report) | end of treatment | |
| continuous tobacco abstinence (weekly expired CO measurements less than 9 ppm and self report) |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| A Eden Evins, MD, MPH | Massachusetts General Hospital | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Freedom Trail Clinic | Boston | Massachusetts | 02114 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 17632223 | Result | Evins AE, Cather C, Culhane MA, Birnbaum A, Horowitz J, Hsieh E, Freudenreich O, Henderson DC, Schoenfeld DA, Rigotti NA, Goff DC. A 12-week double-blind, placebo-controlled study of bupropion sr added to high-dose dual nicotine replacement therapy for smoking cessation or reduction in schizophrenia. J Clin Psychopharmacol. 2007 Aug;27(4):380-6. doi: 10.1097/01.jcp.0b013e3180ca86fa. | |
| 37230961 | Derived | Hajizadeh A, Howes S, Theodoulou A, Klemperer E, Hartmann-Boyce J, Livingstone-Banks J, Lindson N. Antidepressants for smoking cessation. Cochrane Database Syst Rev. 2023 May 24;5(5):CD000031. doi: 10.1002/14651858.CD000031.pub6. |
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| Cognitive Behavioral Group Therapy | Behavioral | Participants attended a 12-session, 1-hour, weekly smoking cessation group program with 3 to 7 participants led by a psychologist with tobacco treatment specialist training. Subjects set a quit date, and nicotine patches (Habitrol) and nicotine polacrilex gum (Nicorette) were initiated in the fourth week. |
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| nicotine replacement therapy | Drug | Nicotine patch was dosed at 21 mg/d for 4 weeks, 14 mg/d for 2 weeks, and 7 mg/d for 2 weeks, then discontinued. Nicotine gum (2 mg) was distributed for use as needed for craving up to 18 mg/d. |
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| end of treatment |
| psychotic symptoms | continuous and end of treatment |
| negative side effects | continuous |
| negative and depressive symptoms compared to baseline at the end of the 3-month treatment and 3-month follow-up phases | continuous and end of treatment |
| measures of attention and memory while attempting to quit smoking | end of treatment |
| health-related quality at the end of the 3-month treatment and 3-month follow-up phases | continuous and end of treatment |
| weight gain at the end of the 3-month treatment and 3-month follow-up phases | continuous and end of treatment |
| ID | Term |
|---|---|
| D014029 | Tobacco Use Disorder |
| D012559 | Schizophrenia |
| D011618 | Psychotic Disorders |
| D016540 | Smoking Cessation |
| ID | Term |
|---|---|
| D019966 | Substance-Related Disorders |
| D064419 | Chemically-Induced Disorders |
| D001523 | Mental Disorders |
| D019967 | Schizophrenia Spectrum and Other Psychotic Disorders |
| D015438 | Health Behavior |
| D001519 | Behavior |
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| ID | Term |
|---|---|
| D016642 | Bupropion |
| D000095488 | Nicotine Replacement Therapy |
| D061485 | Tobacco Use Cessation Devices |
| D000074164 | Nicotine Chewing Gum |
| ID | Term |
|---|---|
| D011427 | Propiophenones |
| D007659 | Ketones |
| D009930 | Organic Chemicals |
| D004358 | Drug Therapy |
| D013812 | Therapeutics |
| D002638 | Chewing Gum |
| D053149 | Plant Gums |
| D001704 | Biopolymers |
| D011108 | Polymers |
| D046911 | Macromolecular Substances |
| D011134 | Polysaccharides |
| D002241 | Carbohydrates |
| D002182 | Candy |
| D005502 | Food |
| D000066888 | Diet, Food, and Nutrition |
| D010829 | Physiological Phenomena |
| D019602 | Food and Beverages |
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