Active clinical trials for "Depressive Disorder, Major"

Phase advance of HRV will be anticipated in agomelatine group. It is anticipated that both agomelatine and floxentine will increase HRV at the end of the treatment.

Assessing the effectiveness of Idazoxan as a treatment for depressive patients who did not respond to treatment with SSRI

Smartphone applications (apps) may be well-suited as a low cost adjunctive tool for increasing the adherence of individuals to psychotherapy treatments which may subsequently increase symptom reduction and improve clinical outcomes. Apps offer the opportunity for real-time tracking of behavior and have the ability to provide prompt feedback and reminders in a convenient, readily available technology. The immediacy and convenience of apps may be responsible for the observed improvements in adherence on the part of the patients relative to traditional paper-and-pencil tracking and practice of skills taught in psychotherapy. These features are relevant to behavioral activation (BA) protocols, the effects of which are often attenuated by failure to adhere to regular practice and tracking of behavior. The Mood Coach app is a BA protocol developed to provide a convenient means of planning and tracking activity, and monitoring mood responses to scheduled increases in activity. This project evaluates the utility of this app as an adjunct to standard BA treatment. The investigators predict that participants assigned to the BA+app condition will demonstrate greater adherence to the BA treatment compared to the standard BA condition. The investigators also predict that the participants in the BA+app condition will report greater satisfaction with the app compared to the standard BA protocol that utilizes paper and pencil materials.

The primary study intent is to examine biological mechanisms associated with acute and chronic treatment responses in major depressive disorder (MDD). It is hypothesized that treatment responsiveness, representing endogenous opioid system function, will be associated with acute improvements in mood state over a 10-week treatment trial in MDD. Potential (bio) markers of treatment effects will be tested against psychophysical responses to placebo and active treatments.

The purpose of this study is to examine the potential impact of the assay in terms of depression severity as measured by change in Clinical Global Impressions (CGI) scale at 3 months.

Depression is a highly prevalent condition characterized by persistent low mood, energy, and activity that can affect one's thoughts, mood, behavior, and sense of well-being. Repetitive transcranial magnetic stimulation (rTMS), a non-invasive neuromodulatory technique, is an effective treatment for depression. However, remission rates are suboptimal and ideal stimulation parameters are unknown. The overarching goal of this study is to elucidate how brain changes accumulate during rTMS, and how these changes relate to clinical outcome. I plan to recruit patients with medication-resistant depression and treat with four weeks of rTMS in a randomized, double-blind, sham-controlled fashion. I will measure brain changes using TMS-EEG and determine how these changes relate to clinical outcome. This study will 1) test how brain changes relate to clinical outcome and 2) establish a computational model to help predict outcome and propose novel treatment protocols.

The aim of the research is to study longitudinally the effects of reassignment hormonotherapy on the connectome of MtF (biological men who are transitioning to the female gender) dysphoric subjects after 6 months of hormone therapy. The subjects will be compared to a control group of healthy subjects taking into account sexual orientation

The purpose of this study is to use fMRI to evaluate the effects of brexpiprazole as add-on therapy to antidepressants on brain connectivity in individuals with MDD and symptoms of anxiety, aged 18 to 65.

Demonstrate the acute effects of ketamine on endogenous µ-opioid neurotransmission in humans.

Background: - Medications to treat major depression act on a brain chemical called serotonin, which binds to receptors on brain cells. More research is needed on how serotonin receptors work in the brain, and imaging studies such as magnetic resonance imaging (MRI) can provide information on how these receptors function in the brains of individuals with depression and healthy volunteers. The experimental radioactive chemical [11C]CUMI has been designed to react with serotonin receptors, and researchers are interested in studying its effectiveness using positron emission tomography (PET) scanning to see how well it gets into the brain. Objectives: - To evaluate the effectiveness of the radiotracer [11C]CUMI in brain imaging studies of serotonin receptors. Eligibility: - Individuals between 18 and 55 years of age who either have been diagnosed with major depressive disorder or are healthy volunteers. Design: Participants will be screened with a full medical history, physical and psychiatric examination, blood and urine tests, and questionnaires about mood. Participants will also have an electrocardiogram at this visit. At the first study visit, participants will have a MRI scan of the brain to provide baseline data on brain function. At the second study visit, participants will have a PET scan with the [11C]CUMI contrast agent. No treatment will be provided as part of this protocol....