Active clinical trials for "Depressive Disorder, Major"

This project seeks to elucidate the mechanisms by which antidepressant medications have limited efficacy in Late Life Depression (LLD) in order to develop new treatment interventions for this prevalent and disabling illness. Investigators hypothesize that the presence of executive dysfunction (ED),which is common in depressed adults over 60, impairs the ability to form appropriate expectancies of improvement with antidepressant treatment. Greater expectancy has been shown to improve antidepressant treatment outcome and is hypothesized to be a primary mechanism of placebo effects. Moreover, white matter hyperintensities (WMH) on magnetic resonance imaging (MRI) are more prevalent in patients with LLD compared to healthy controls. It has been argued that WMH contribute to the pathogenesis of LLD with ED and decrease the efficacy of antidepressant medications by disrupting connections between prefrontal cortical (PFC) and subcortical structures. Vascular lesions to white matter tracts may also compromise the pathway by which expectancy-based placebo effects influence depressive symptoms. Expectancies reflect activation in PFC areas that may improve depressive symptoms by modulating the activity of subcortical regions subserving negative affective systems (i.e., amygdala) as well as those important in reward and hedonic capacity (nucleus accumbens and ventral striatum). Thus, LLD patients with ED and WMH may sustain a "double-hit" to their ability to experience placebo effects in antidepressant treatments: ED diminishes the ability to generate appropriate treatment expectancies, while WMH disrupt the physiologic pathways by which expectancies lead to improvement in depressive symptoms.

Standard treatments for depression in specialty care settings are effective but resources for delivering empirically supported psychotherapies are often limited. Computerized cognitive behavioral therapy (cCBT) is an effective and highly scalable treatment for depression that might help expand services in psychiatric settings, however, little is known about its efficacy in this population. The present study aims to establish the efficacy of a internet-delivered cCBT program ("Beating the Blues") plus email and telephone support for depression in a psychiatric outpatient clinic setting. The secondary aim is to pilot an assessment procedure designed to identify moderators of treatment effectiveness.

This study will test the use of ketamine for treatment of depression in adolescents that have not responded to other treatments. We will also examine neurobiological mechanisms of treatment.

The purpose of this study is to investigate the efficacy and safety of flexibly dosed adjunctive brexpiprazole treatment in subjects with major depressive disorder and anxiety symptoms, who are experiencing an inadequate selective serotonin reuptake inhibitor (SSRI)/serotonin norepinephrine reuptake inhibitor (SNRI) response.

The purpose of this study is to evaluate the safety and tolerability of escalating single oral doses of LY03005 in healthy subjects and to characterize the pharmacokinetics (PK) of escalating single oral doses of LY03005.

The purpose of this study is to understand the effectiveness of a ten-week internet-based cognitive behavioral therapy (iCBT) treatment on improving depressive symptoms, coping and resilience skills, and cognitive processing.

The main aim of this study is to (1) evaluate the effectiveness of metacognitive therapy for major depressive disorder. Additional aims are to (2) investigate patterns of change and the mechanisms of action involved during treatment, and to (3) examine the impact of meta-cognitions in the treatment and relapse prevention of depression.

The purpose of this study is to evaluate a computer-guided, telephone-based therapy for adolescent depression, delivered in a pediatric primary setting in the community.

Ketamine infusion has been shown to have rapid antidepressant properties, however the possible use of ketamine in treatment-resistant depression as augmentation has not been investigated. The overall aim of this study is to assess the feasibility, safety and tolerability, efficacy and duration of the effect of intravenous N-methyl-D-aspartate antagonist ketamine as augmentation of antidepressants for chronic suicidal ideation in subjects with severe treatment-resistant depression (TRD). This is an open-label study (pilot).

Safety and Efficacy of Vilazodone in Major Depressive Disorder