View clinical trials related to Depressive Disorder, Major.
Filter by:This feasibility study investigates effects of EEG-based low frequency, low emission magnetic cortical stimulation in comparison to a sham treatment in subjects with moderate to severe depressive disorder.
The purpose of this study is to assess the safety and tolerability of ascending multiple oral doses of brexpiprazole as adjunctive therapy in the treatment of elderly subjects with MDD.
This is a 6-week comparison of asenapine versus placebo as an add-on to ongoing antidepressant treatment in patients with major depression who have not had a complete therapeutic response to treatment with the antidepressant alone. The investigators hypothesize that added asenapine will produce greater reductions in depression than will added placebo.
Ketamine infusions resulted in an acute reduction in global depression scores and in severity of suicidal ideation. The investigators therefore plan to investigate the feasibility and efficacy of repeated intravenous administration of ketamine in severely depressed, treatment resistant patients. The results of the study could lead to development of new strategies for treating depression.
Background: Studies show that about 1 out of 3 patients in Primary Care suffer primarily from mental health disorders, such as anxiety disorders and depression. Cognitive behavior therapy (CBT) has been shown to be an effective treatment of these disorders. Despite the strong evidence for CBT there is a lack of evidence-based psychological treatment in primary care. For various reasons, the progress of research has not affected clinical practice. For successful implementation of CBT in primary care cost-effective therapies, access to therapists with proper training and supervision, evidence-based manuals and management that support the implementation is needed. Aim: The aim of this trial is to evaluate a stepped care model with CBT in primary care. All patients are first treated with self-help CBT (N = 400). Patients that do not improve after treatment (9 weeks) are randomized to individual CBT or continued self-help treatment. Based on published studies 2/3 is expected to be improved after self-help and therefore do not undergo randomization. 1/3 (n = 133) who didn´t respond to treatment is randomized to individual CBT (N = 67) or continued self-help treatment (N = 67).
Background: Common mental illness, such as anxiety disorders and depression, is the main cause for sick leave in Sweden. Cognitive behavior therapy (CBT) has been shown to be effective in alleviating target symptoms of these disorders, but its effect on sick leave rates has not been sufficiently addressed. The investigators have developed an intervention called return to work (RTW), which is based in cognitive behavioral theory, that has a primary aim of helping sick-listed patients with common mental illness return to work. This new treatment has not been evaluated in a randomized controlled trial. Aims: The aim of this study is to investigate the effect of CBT and RTW for subclinical common mental illness in a randomized controlled trial conducted in primary care. Participants will be randomized to diagnosis specific CBT (n=50), RTW (n=50. Main outcomes are days of sick leave and clinician severity rating of psychiatric symptoms. This study could contribute to new knowledge regarding how to best treat patients on sick leave with mild common mental illness.
The purpose of this study is to assess the effectiveness of systematic screening for depression in high-risk patient participants in everyday clinical practice. Systematic screening for depression in high-risk patients is recommended to be included as a usual practice but its effectiveness in this context remains controversial. In this study, 35 primary care physicians (PCPs) in Spain were assigned to intervention (receive one day training in depression screening guidelines and use guidelines for six months) and 34 PCPs were assigned to a control group (manage depression in the usual way for six months). There were a total of 525 patient participants with MDD.
The overall aim of this study is to utilize an integrative research model in order to dynamically assess reward-related dopamine (DA) transmission in major depressive disorder (MDD) and test the role of dysfunctional DA release in depression and anhedonia. The first arm of this line of research (PET scan) aims to investigate phasic DA release in MDD during incentive motivation. The investigators will utilize an established molecular imaging technique to measure striatal DA release dynamically during performance of testing and control versions of a monetary incentive delay task, which involves anticipation and receipt of monetary rewards. In doing so, this experiment will link together independent lines of research that have associated depression with decreased hedonic responsiveness, impaired reinforcement learning and dysfunctional DA transmission. We hypothesize that, relative to matched controls, unmedicated MDD subjects will show reduced reward-related ligand (11C-raclopride) displacement. Reduced ligand displacement will be interpreted as indicating reduced task-induced release of endogenous striatal DA in response to reward-predicting cues and unpredictable reward in MDD subjects. In the second arm of this research (EEG recording), the investigators aim to probe the spatio-temporal dynamics of brain mechanisms underlying positive and negative reinforcement learning in MDD and their relations to phasic DA. Participants will perform the probabilistic stimulus selection task (PSST) while event-related potentials (ERPs) are collected. The investigators expect that, relative to matched controls, unmedicated MDD subjects will show reduced positive reinforcement learning, potentiated negative reinforcement learning, and larger (i.e., more negative) feedback-related negativity (FRN) in response to positive reinforcement (indicative of reduced DA transmission). Moreover, the investigators hypothesize that a more negative FRN in response to positive reinforcement will be associated with decreased striatal raclopride displacement (i.e., lower release of endogenous DA) as measured by PET in the first part of the study. This experiment will investigate the effects of blunted DA transmission on behavioral and ERP markers of both positive and negative reinforcement learning.
This study is a pilot to assess feasibility of the protocol in patients and controls across six participating sites. The goal is to identify biological markers (biomarkers)that can be measured at baseline or early in treatment to predict treatment outcome in individual patients with Major Depressive Disorder (MDD). Biomarkers of interest will be clinical (using interview and self-report measures), molecular (from blood samples) and neurobiological (using neuroimaging and EEG).
Insufficient cognitive control over emotional distracters is characteristic for major depressive disorder (MDD). Hypoactivation of the dorsolateral prefrontal cortex (dlPFC) is associated with this deficit. In this study the investigators assess the effect of an enhancement of dlPFC activity in MDD patients by anodal transcranial direct current stimulation (tDCS) on cognitive control. In a double-blinded, balanced randomized, sham-controlled crossover trial the investigators determine the effect of a single-session tDCS to the left dlPFC on cognitive control in MDD patients and healthy controls. To assess the cognitive control the investigators use a delayed response working memory (DWM) task with pictures of varying valence presented during the delay period.