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This study uses fMRI brain imaging to look at how the brain responds to emotional pictures while people take the drug Duloxetine, in individuals with major depressive disorder (major depression). People aged 18 to 60 who met the criteria for depression and were suitable for an MRI scan could take part. The study was carried out in Phase 4 and has been completed.
The summary above is a plain-language rendering of the official record. The original English title is shown for reference.
Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.
Inclusion Criteria for Depressed Patients: * Ages 18 - 60 years and able to give voluntary informed consent. * Satisfy criteria for Major Depressive Disorder (MDD) and current depressed episode using the Structured Clinical Interview for DSM-IV (SCID-IV). * 17-item Hamilton Depression Rating Scale (HDRS) score \> 18. * Satisfy criteria to undergo an MRI scan based on MRI screening questionnaire. * Able to be managed as outpatients for initial assessment and during treatment as ascertained by the following: * Symptoms not worsening by more than 10 points on the HDRS during the course of the study. * No danger to self or others. Exclusion criteria for patients: * Meeting DSM-IV criteria for schizophrenia, schizophreniform disorder, schizoaffective disorder, bipolar disorder, atypical psychosis, mental retardation, or organic mental (including organic mood) disorder. * Known hypersensitivity to duloxetine or any of the inactive ingredients. * On monoamine oxidase inhibitors in the past 2 weeks. * History of narrow angle glaucoma * Lack of response of the current episode of depression to two or more adequate courses of antidepressant therapy at a clinically appropriate dose for a minimum of 4 weeks or, in the judgment of the investigator, the patient meets criteria for treatment-resistant depression. * Use of neuroleptic in the past 2 weeks. * Use of antidepressants in the past 2 weeks. If on fluoxetine in the past, then should not have been on this medication for 4 weeks. * History of lack of response to duloxetine. * Use of mood stabilizers in the past 2 weeks. * Use of benzodiazepines in the past 2 weeks. * Acutely suicidal or homicidal or requiring inpatient treatment. * Meeting DSM-IV criteria for other substance dependence within the past year, except caffeine or nicotine. The criteria will be evaluated by interview and urinary toxicology screening initially and on test days. * Use of alcohol in the past 1 week. * No serious medical or neurological illness as assessed by physical examination and laboratory examination including CBC and blood chemistry. * Current pregnancy or breast-feeding. * Metallic implants. * Previously known positive HIV blood test as reported by the subject.